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Развитие средств автоматизации и микроконтроллерной техники делает возможным программную реализацию и промышленное применение сложных алгоритмов управления. Однако применение алгоритмов управления, отличающихся от классических ПИ/ПИД алгоритмов, не получило широкого распространения. А ПИД алгоритм, как любой алгоритм с обратной связью, при воздействии возмущающего воздействия реагирует по факту отклонения, что снижает качество компенсации. В данной работе решается задача проектирования предиктивного регулятора для компенсации технологических возмущающих воздействий объектов типа нагревательная печь . Описан процесс проектирования нечеткой системы, продемонстрированы результаты сравнительного моделирования. Применение разработанного в работе нечеткого предиктивного настройщика позволяет повысить качество компенсации технологического возмущения вида межзонное влияние в сравнении с ПИрегулятором, настроенным на компенсацию возмущения. Амплитуда ошибки снижена в среднем на 64 в сравнении с ПИрегулятором, настроенным на переходный процесс, время компенсации сокращено на 21 ., The development of automation facilities and microcontrollers makes possible implementation and industrial application of complex control algorithms. However, the algorithms, which diff er from classical PI / PID control laws, are not widespread. Considering disturbances rejection, the PID algorithm, like any other feedback law, reacts to control error rise, but such transient quality could be improved in case the controller would be able to react earlier. In this research mentioned problem is solved with the help of the proposed predictive controller based on fuzzy logic, which is used to reject technological disturbances acting on such plants as heating furnaces. The process of fuzzy system design is described the results of comparative modeling are shown. Application of the developed fuzzy predictive controller allows to improve the compensation of such disturbance as interzone heat transfer in comparison with a conventional PIcontroller. The amplitude of the control error is reduced by 64 averagely comparing to PIcontroller tuned for transient processes, the transient time is reduced by 21 ., №10 (2019)

Heat-treatment furnaces for workpiece pre-rolling heating are heating plants of the transition type where sheet slabs with various characteristics are simultaneously heated. The heat treatment furnace performance is directly connected with the efficient operation of the rolling mill process plants. The irregular operation pace of the rolling mill complicates the implementation of energy-saving workpiece pre-rolling heating modes and increases the risk of delivering an insufficiently heated workpiece. This paper proposes the system of controlling the heat mode of the heat-treatment furnace by the criterion of fuel consumption rate minimization and controlling over a real heated state of a sheet slab located at the workpiece pushing from the heat-treatment furnace to the rolling mill. The author uses a simplified mathematical model of workpiece heating intended for defining the energy-saving heating path accounting for the impact of technological and structural constraints in the workpiece heating process. The calculation is conducted in real time and allows obtaining an optimal heating path of each workpiece at the moment of its loading into the heat-treatment furnace. The paper considers the necessity of interaction and the interaction itself of the subsystems performing the key function in the energy-saving operation mode of the heat-treatment furnace at workpiece heating. The author studied the subsystems of forecasting the workpiece heating time on the state of the rolling mill equipment and the geometrical dimensions of the rolled band, control over gaseous fuel burning in the heat-treatment furnace operation space, system of control over the workpiece heating state before pushing from the heat-treatment furnace and forecasting the roll temperature after the treatment of the rolling mill roughing train.

We have rationally designed and developed a fully automated desktop furnace system that enables programmable chemical vapour deposition growth of carbon nanotubes with controlled height, density, and pattern architecture. Comprising several essential components involving a heating furnace, mass flowmeters, and computer controller, the developed system realizes controlled and practical carbon nanotube growth without resort to expensive and ponderous instruments. By programming, modifying, and loading the reusable recipes in the developed system, systematic and reproducible growths of carbon nanotubes with desired morphology and dimension can be performed. Growth results with controlled height, density, and pattern are demonstrated through the actual operations, confirming the validity and usefulness of the developed system towards various practical applications.

In view of the unclear heat transfer characteristics of the new type natural ventilation heating furnace designed by Liaohe Oilfield, the simulation combined calculation method is adopted. The heat transfer capacity of different components is analyzed through the flue gas temperature drop. The thermal efficiency is calculated by the positive and negative balance method combined the simulation results, and the efficiency under the different inlet temperature, the inlet flow rate and the flow rate of crude is analyzed and calculated. The results show that the designed heating furnace efficiency is over 90%, which is nearly 7% higher than that of the old heating furnace. The heat transfer effect of different components is different. The horizontal smoke pipe makes the temperature drop effect of the flue gas the most obvious, and the temperature drop can be achieved. 313 °C, is an important heat transfer component in the furnace. At the same time, no heat collection at the top of the furnace is found. Among the factors affecting the thermal efficiency, the amount of crude oil processed by the heating furnace has the greatest influence on the thermal efficiency, which can cause the efficiency fluctuation to reach 12%. Keywords: Heat transfer, Reheating furnace, Heat transfer characteristics, Thermal efficiency, Numerical simulation

Нагрев металла играет важную роль в получении качественной готовой продукции при выполнении пластической деформации или термообработки. Поэтому выбор правильной и обоснованной технологии нагрева металла является серьезной и важной задачей. На сегодняшний день возрастает роль информационно-моделирующих систем, представляющих собой компьютерную реализацию научно-обоснованных математических моделей, вследствие нестабильности с поставками сырья и энергоресурсов. Информационно-моделирующие системы выполняют задачи по моделированию, планированию и принятию решений, что позволяет технологам правильно и вовремя воздействовать на процессы, протекающие в металлургических агрегатах. Для создания информационной системы использовался язык программирования JavaScript, а также библиотека React. Основной целью разработки информационной системы является моделирование и идентификация параметров внешнего теплообмена в нагревательной печи. Достижение этой цели обеспечит оптимальный режим нагрева металла по всему сечению, что позволит увеличить выход годного металла, за счет уменьшения брака. Heating metal plays an important role in obtaining high-quality finished products when performing plastic deformation or heat treatment. Therefore, the choice of the correct and reasonable technology of heating the metal is a serious and important task. Today, the role of information-modeling systems, which represent a computer implementation of scientifically-based mathematical models, is increasing, due to the instability with the supply of raw materials and energy resources. Information-modeling systems perform tasks for modeling, planning and decision-making, which allows technologists to influence the processes occurring in metallurgical plants correctly and in time. To create an information system, the programming language JavaScript was used, as well as the React library. The main purpose of developing an information system is to simulate and identify the parameters of external heat exchange in a heating furnace. Achieving this goal will ensure optimal heating of the metal throughout the cross section, which will increase the yield of metal, by reducing scrap.

Many researchers around the world have lots of interests in discovering what and how may happen when materials processing is conducted in space. Usually, for the investigation of space material sciences, experimental facilities are important and necessary. Up to now, more than one hundred of material experimental facilities have been developed in the world. They include many high-temperature heating furnaces, in situ observation and diagnosis equipments, as well as facilities for crystal growth from water solution in microgravity. Some of them are prepared by international cooperation among two or even more countries. In this chapter, we will give a brief summary for the material processing facilities in the world. The facilities developed in the recent ten years serving on International Space Station (ISS) are particularly focused. Furthermore, some material experimental devices built by China which have served in Chinese recoverable satellites and man-made space crafts are also discussed emphatically.

The heating furnace has dynamic fluctuations of hazard factors in the actual circumstance and is the core equipment of hydrocracking unit, which is the main equipment of petrochemical enterprises. Owing to the limitation of conventional risk analysis approaches, a dynamic risk analysis approach based on dynamic Bow-tie model(short for DBT) and dynamic Bayesian network(short for DBN) was proposed. Taking the failure accident of oil and gas leakage of heating furnace as a case study, the timing sequence of equipment failure of heating furnace is analyzed first, the risk evolution process is obtained, and the dynamic tie model of accident is established. By mapping the dynamic tie model to the dynamic Bayesian network, the risk factors of oil and gas leakage in heating furnace are deduced in two-way reasoning. The dynamic risk trend of heating furnace was predicted eventually, the probability of oil and gas leakage caused by heating furnace is about 1.26E-07 after two year. Through diagnostic reasoning, 6 key factors and 3 accident paths were determined. The results are in accordance with the actual situation, proving that DBT-DBN model can effectively reflect the dynamic characteristics of accident scenarios and provide reference for the risk assessment of petrochemical enterprises.

This paper reports the variations of mass, porosity, and wave velocity of sandstone after high temperature heating. The range of temperature to which the sandstone specimens have been exposed is 25–850°C, in a heating furnace. It has been shown that below 300°C, porosity and wave velocity change very little. Above 300°C, there is a rapid increase in porosity, but the wave velocity decreases significantly. The results of thermo gravimetric analysis (TGA), differential scanning calorimetry (DSC) and mercury intrusion porosimetry (MIP) suggest that a series of changes occurred between 400 and 600°C in sandstone could be responsible for the different patterns of variation in porosity and wave velocity.

The existing technical standards for determining the minimum ignition temperature (MIT) of dust clouds are inadequate. According to existing technical standards, this study expands the test pressure conditions. The MIT of dust clouds can be determined by a variety of different dispersion pressures, that is, 0.02, 0.04, 0.06, 0.08 and 0.1 MPa. But, whether the MIT of dust clouds tested under different dispersion pressures is consistent is lacking in the corresponding exploration. In this study, a set of measurement system of instantaneous concentration and particle size was established, which can observe the flow of dust clouds and the distribution of the instantaneous particle size and concentration of dust clouds in the heating furnace tube. On this basis, the MIT of dust clouds is determined, and the physical mechanism of dispersion pressure affecting the MIT of dust clouds is revealed. The results show that the MIT of dust clouds is consistent when the dispersion pressure in the range of 0.02–0.06 MPa. When the dispersion pressure is not in this range, the MIT of the dust clouds is very different due to the obvious increase of the instantaneous particle size of the dust clouds.

A resistance heating vertical Bridgeman (VB) furnace able to maintain high temperatures up to 1830 °C in ambient air was developed to suppress weight loss of both the crucible and raw material Ga2O3. Large-size 50 mm diameter β-Ga2O3 crystals with a growth orientation perpendicular to (1 0 0) plane were grown by the VB growth process in platinum-rhodium alloy crucibles using this furnace. The total weight loss during a VB growth run is very small, amounting to less than 1% of the total weight of the platinum-rhodium alloy crucible and the Ga2O3 raw material.

Heating flame furnaces are the main type of furnaces used for heating and heat treatment of metal products in metallurgy and mechanical engineering. In the working chamber of a modern heating furnace, there should be neither high-temperature nor stagnation zones. One of the methods used to provide such combustion conditions is the application of distributed (volumetric) combustion. Owing to this method, heating quality is ensured by creating a uniform temperature field and equivalent heat exchange conditions, regardless of the placement of the charge in the working chamber of the furnace. In this work, we numerically study the volumetric combustion and influences of small- and large-scale recirculation ratios of furnace gases, the influence of temperature fluctuation on the regenerator nozzle, and the working parameters at the starting phase and reverse.

In order to reduce the influence of temperature fluctuation on heat treatment of regenerative forging reheating furnace, a scheme of improving traditional cascade PID controller to fuzzy PID controller was proposed in this paper. Taking the actual PID parameters of reheating furnace in forging workshop of a steel plant as reference object, the feasibility of the scheme is simulated by using MATLAB/SIMULINK. The results show that: 1) The control effect of fuzzy PID control is better than that of PID control in overshoot and adjusting time when the gain coefficient is perturbed 30%; 2) The dynamic performance of the system does not change significantly when the time constant is perturbed 20%; 3) The fuzzy PID shows better stability when the lag time is perturbed 20%.

It is of significance to ascertain the flue gas temperature at the exit of heating furnace, which lays the foundation of thermodynamic calculation of boiler and its design. This study analyses some normal calculation formulas of the flue gas temperature at the exit of heating furnace of oil and gas field, and makes comparisons of different calculation methods via examples. Appropriate parameters are presented, so as to give guide to the design and calculation of heating furnace of oil and gas field.

'Three box' exergy analysis optimisation method is applied to oil field system in order to identify and improve the weak links of crude oil gathering and transportation system. The universal 'black box', 'white box', 'grey box' models and balance equations of oil field analysis are established according to different requirements of rough, fine and sub-fine analysis. The weak link of energy utilisation is determined. The heating furnace is identified as the lowest exergy efficiency equipment in crude oil gathering and transportation system, which can provide a theoretical basis and scientific method for improving system energy efficiency.

Using CFD simulation technology, the influence of three kinds of operation modes (air change on the same side mode, cross air change mode and staged air change mode) on the temperature uniformity of regenerative heating furnace was studied. The results show that: 1) in the same side air exchange mode, the high temperature area is easy to form in the middle of the furnace, which makes the local temperature of the billet surface high; 2) in the cross air exchange mode, the high temperature area appears in the middle of the furnace, the heat exchange in the middle of the billet is strong, and the heating speed is fast; 3) in the staged air exchange mode, the high temperature area moves to both ends, and the temperature at both ends of the billet is higher than that in the middle. Therefore, in order to keep the temperature of billet constant, the best operation mode of regenerative heating furnace is alternating operation of cross air change mode and staged air change mode.

Aiming at the characteristics of non-linear, time-varying and wide-ranging working conditions of heating furnace, with the improvement of control requirements for actual system prediction, single model modeling has the problems of large amount of calculation and poor accuracy. A multi-model modeling method is proposed in this paper. This method first divides the actual data of the heating furnace system into training set, validation set and test set, and uses FCM clustering to divide the training set into different working conditions; The Elastic Network (ElasticNet) and support Vector Machine regression (SVR) models are established in each local condition, and the optimal model of each local condition is selected from the two models by the validation set; use genetic algorithm (GA) to obtain the optimal weight of each local model, finally construct a model suitable for the global. This modeling method has a good global adaptability to the identification process. The veracity of the model is verified on the test set, and good results are obtained.

В роботі представлені результати експериментального дослідження впливу електричного поля на розподіл температури у нагрівальних пристроях. Для підвищення ефективності експерименту було здійснено його планування з метою досягнення максимальної точності прогнозування при мінімальній кількості проведених операцій і забезпечення статистичної достовірності одержаних результатів. Отримано математичну модель, що дозволяє визначити температуру у місці розташування електродів при наявності електричного поля, й підтверджено її адекватність., The results of experimental research of the electric field influence on a temperature distributing in heating devices are proposed in this article. To increase of experimental efficiency its planning to get an accuracy maximum of prediction at minimum quantity of accomplished operations and to provide for statistic reliability of the achieved results was carried out. The mathematical model permitting to determine temperature in the place of electrodes location at existing electric field was obtained, its adequacy was confirmed.

The objective of this study was to evaluate the thermal comfort and performance of broilers in their initial stage of development utilizing two different heating systems. The experiment was conducted in two sheds placed on a commercial farm. The heating systems were: indirect heating furnace and radiation heating drums. At the beginning of the heating phase the birds were confined in an area corresponding to 360 m² in shed 1 and 180 m² in shed 2, delimited by polyurethane curtains, allowing a density of 58.8 birds m-². The variables: dry bulb temperature (Tdb), relative humidity (RH%) and temperature and humidity index (THI) were calculated. Measurements were performed using continuous reading data loggers at 15-minute intervals throughout the experimental period, which was a complete productive cycle for males. Differences were detected in the environmental variables during the period evaluated, as well as differences in performance were found as a function of the two heating systems. The heating system of the furnace presented UR ranging from 47-59% in relation to the drum system (51-57%), besides providing a more constant temperature and providing a greater distribution of heating. On the other hand, the drum system provided greater weight gain in the animals. RESUMO. Objetivou-se comeste estudo avaliar o conforto térmico e desempenho zootécnico de frangos de corte em seu estágio inicial de desenvolvimento em função utilizando dois sistemas de aquecimento distintos. O experimento foi conduzido em dois galpões localizados numa propriedade comercial. Os sistemas de aquecimento foram: fornalha de aquecimento indireto e tambores de aquecimento por radiação. No início da fase de aquecimento as aves foram confinadas numa área correspondente a 360 m2 no galpão 1 e 180 m2 no galpão 2, delimitada por cortinas de poliuretano, possibilitando uma densidade de 58,8 aves m-2. Foram avaliadas as variáveis Temperatura de bulbo seco (Tbs), umidade relativa do ar (UR%) e calculado o índice de temperatura e umidade (ITU). As medições foram realizadas com o uso de dataloggers de leitura contínua da marca Hobbo em intervalos de 15 minutos, durante todo o período experimental, que foi de um ciclo produtivo completo para machos. Foram detectadas diferenças nas variáveis ambientais durante o período avaliado como também foram encontradas diferenças no desempenho zootécnico em função dos dois sistemas de aquecimento. O sistema de aquecimento por fornalha apresentou UR variando de 47-59% em relação ao sistema de tambores (51-57%), além de proporcionar temperatura mais constante e proporcionar maior distribuição de aquecimento. Por outro lado, o sistema de tambores proporcionou maior ganho de peso nos animais.

In the production process of large-diameter seamless steel pipes, the blank heating quality before roll piercing has an important effect on whether subsequently conforming piping is produced. Obtaining accurate pipe blank heating temperature fields is the basis for establishing and optimizing a seamless pipe heating schedule. In this paper, the thermal process in a regenerative heating furnace was studied using fluent software, and the distribution laws of the flow field in the furnace and of the temperature field around the pipe blanks were obtained and verified experimentally. The heating furnace for pipe blanks was analyzed from multiple perspectives, including overall flow field, flow fields at different cross sections, and overall temperature field. It was found that the changeover process of the regenerative heating furnace caused the temperature in the upper part of the furnace to fluctuate. Under the pipe blanks, the gas flow was relatively thin, and the flow velocity was relatively low, facilitating the formation of a viscous turbulent layer and thereby inhibiting heat exchange around the pipe blanks. The mutual interference between the gas flow from burners and the return gas from the furnace tail flue led to different flow velocity directions at different positions, and such interference was relatively evident in the middle part of the furnace. A temperature “layering” phenomenon occurred between the upper and lower parts of the pipe blanks. The study in this paper has some significant usefulness for in-depth exploration of the characteristics of regenerative heating furnaces for steel pipes.

In the present research, an innovative testing method, specifically developed to characterize the tool steels under creep-fatigue conditions, was carried out on a TQ1 (X36CrMoV5-2) hot-work tool steel in cooperation with Constellium R&D center. The experimental campaign consisted of different testing conditions, and most of the specimens were nitrided to account for the specific surface state of the tools. Tests were performed on a 100 kN MTS fatigue machine equipped with a heating furnace. A creep-fatigue loading type was applied to the specimens, i.e., a cyclic load with a dwell time, in order to properly reproduce the conditions acting on extrusion tools and dies. Under a constant temperature of 520 °C, the effects of four different load levels and two different values of dwell times were evaluated. In addition, selected test conditions were replicated with specimens not nitrided with the aim to evaluate and quantify the influence of the superficial treatment. Final results were presented in terms of fatigue diagram of the TQ1 steel and compared to the performances of the H11 tool steel tested in a previous research by the same authors.

The common occurrence of slow drifts in industrial processes ask for the need of adaptive monitoring. In this chapter, a recursive slow feature analysis algorithm for adaptive process monitoring is developed to handle time-varying processes. An algebraic property of slow feature analysis is first revealed. We then show that such a property may be violated in the presence of online updating, and we give an effective remedy. A novel algorithm based on rank-one modification and orthogonal iteration procedure is developed to recursively adjust the solution to the generalized eigenvalue problem, model parameters, and associated monitoring statistics conveniently. In addition, an improved stopping principle for model updating is proposed based on statistics related to process dynamics, which provides an intelligent maintenance mechanism of monitoring systems. The efficacy of the proposed schema is finally evaluated on a industrial crude heating furnace system.

The existing literature on fractional-order interval systems (FOISs) shows that the Kharitonov’s theorem fails to check the stability of the FOIS (Tan et al. in ISA Trans 48:166–172, 2009). Therefore, in this note, it is shown that the relative stability analysis of fractional-order interval systems can be carried out using only four polynomials concept of Kharitonov’s theorem. Thus, there is no need to use Edge theorem which needs to check $$2^{\left( {n+1} \right) }$$ polynomials for $$\left( {n+1} \right) $$ uncertain parameters for stability analysis of FOIS. The proposed approach is applicable to both commensurate and incommensurate classes of fractional-order interval systems. The results are verified for various numerical examples and models of Heating furnace system and Gas turbine plant.

A method to dope silicon ribbons is presented. The method consists on the spraying of the ribbons with a phosphoric acid solution followed by a recrystallization in an optical heating furnace. During the sample heating, as phosphoric acid is dehydrated the resulting phosphorous compounds are either evaporated or serve as source for phosphorous diffusion. Phosphorous is efficiently incorporated in silicon by solid-state diffusion during heating and directly mixed in the melted silicon. Experimental results show significant incorporation gradients along the samples׳ length. The origin of the incorporation gradient is analysed, by testing the effect of experimental parameters such as the argon flux and the recrystallization velocity and direction. It is shown that samples recrystallized in a downward direction have homogeneous doping profiles over most of the length.

Charge heating in industrial furnaces is a difficult and complex process. There are many physical phenomena which influence heat transfer. At the charge surface heat transfer takes place by radiation and convection. In order to ensure correct operation of the technological system, it is necessary to achieve the required charge temperature in the whole volume and ensure its uniformity.The influence of selected burner locations inside the furnace on the charge temperature has been analysed. The temperature field and its uniformity in the round charge made of steel for hot open die forging have been analysed. The model and numerical calculations were performed with the ANSYS-Fluent 14.5 package.

The purpose of this study is to assess the risk of depending on the presence or absence of safety device of domestic heating and drying furnaces, by derivation and analysis of accident frequency of safety devices through FTA (Fault Tree Analysis). Installation standards are lacking in Korean for the safety device of LPG heating and drying furnace, which have a risk of explosion due to structure to trap the leaked gas. Four different safety devices were selected on the basis of NFPA and national standards for combustors of other equipment. Effects of frequency reduction in accidents were analyzed before and after installing the safety devices respectively. As a result, a minimal leakage safety device was presented for preventing damages from gas leak of domestic LPG heating and drying furnace.

Results are reported from studies of the conditions of solidification, cooling, and heating of steel ingots cast in ingot molds. It is shown that optimizing the length of time between the casting of the ingot and its charging into the heating furnace can significantly shorten the heating period and thus increase the unit productivity of the furnace, reduce metal loss from oxidation, and decrease unit fuel consumption.

The technical and economic optimization problem of the heating furnace multi-layer lining, consisting of layers of different thickness and made of materials with different thermal physical and performance properties is considered. The solution and the algorithm to determine the most economically advantageous lining thickness of the furnace is offered. The algorithm allows to evaluate various combinations of multi-layer lining and optimize it for given functional and technical constraints. The calculation program helps to form optimally insulating and refractory furnace lining layers sequentially according to the temperature at the boundary layers, starting from the condition of ensuring lining reliability.

In conventional PID scheme, the ensemble control performance may be unsatisfactory due to limited degrees of freedom. Based on such backgrounds, a novel PID control that inherits the advantages of fuzzy PID control and predictive functional control (PFC) is proposed and tested on the temperature model in a heating furnace in this paper. On the basis of the framework of PFC, the fuzzy PID control is introduced to acquire the optimal control law, then an improved PID control strategy is obtained. Finally, the case study on a temperature model of a heating furnace demonstrates the effectiveness of the proposed PID control scheme in comparison with the conventional PID control and the fuzzy self-adaptive PID control.

This paper is based on introducing the fractional order elements to improvise the performance of traditional PID controllers. In the complete procedure the different tuning parameters (K p , K i , K d ) and the differ-integral's order (λ, μ) of the controller are being obtained using various optimization techniques so that the performance of the heating furnace can be meliorated. The plant (heating furnace) and the different FOPID controllers designed using optimization techniques are kept in a closed loop & the time response characteristics are analyzed. The paper also demonstrates the mathematical modeling of the heating furnace which is being done using the Laplace transform and is in the integer order form or we can say that it is an integer order model.

При строительстве и модернизации промышленных печей следует принимать во внимание следующие существенные факторы: с одной стороны должна быть обеспечена экономическая эффективность, а с другой – важно снизить вредные выбросы в атмосферу, улучшить условия труда персонала и т. п. При этом постоянно возрастающие требования к производительности и экологичности не должны отрицательно сказываться на периоде окупаемости затрат. В данной статье рассмотрен опыт использования рекуперативных горелок. Рассмотрены как положительные, так и отрицательные аспекты использования горелок с точки зрения экономики, экологии и технологии. Существенным исходным моментом оптимизации затрат является правильный выбор системы нагрева в комплекте с системой автоматического регулирования. Одним из примеров эффективной системы нагрева является горелка со встроенной системой подогрева воздуха (рекуперативная горелка), которая позволяет экономить топливо, уменьшить вредные выбросы и одновременно повысить технико-экономические показатели работы печей.

In work the thermal work of the chamber vertical furnace is considered after the technical re-equipment associated with the use of modern fuel burning devices and new lining materials. Until recently this stove burner was equipped with obsolete design and multi-layer brick lining. When retooling was used speed recuperative «Elster Kromschroder» company and ceramic-fiber burner blocks of the company «KERATECH». Introduced system of the overall automation. The purpose of the technical re-equipment is energy-resource saving connected with the reduction of fuel consumption and the lengthening of the service life of the furnace. В работе рассмотрена тепловая работа камерной вертикальной печи после технического перевооружения, связанного с применением современных топливо сжигающих устройств и новых футеровочных материалов. До недавнего времени эта печь была оснащена горелками типа ГНП и кирпичной многослойной футеровкой. При техническом перевооружении были использованы скоростные рекуперативные горелки фирмы «Elster Kromschroder» и керамоволокнистые блоки фирмы «KERATECH». Введена система комплексной автоматизации на аппаратной базе фирмы «Siemens». Цель технического перевооружения – энерго-ресурсосбережения связанное со снижением расхода топлива и удлинением срока эксплуатации печи.

The issue of fuel oil applying efficiency improving in the technological raw material heating furnaces by means of its combustion intensification is considered in the paper. The technical and economic optimization problem of the fuel oil heating before combustion is solved. The fuel oil heating optimal temperature defining method and algorithm analytically considering the correlation of thermal, operating parameters and discounted costs for the heating furnace were developed. The obtained optimization functionality provides the heating furnace appropriate thermal indices achievement at minimum discounted costs. The carried out research results prove the expediency of the proposed solutions using.

The paper considers the heat work of the heating furnace located at the Chelyabinsk Pipe Rolling Plant. The resulted heat balance of the existing heating furnace, as a result of the analysis, revealed shortcomings in the work of the furnace. Measures have been proposed to eliminate the identified shortcomings. В работе рассмотрена тепловая работа нагревательной печи ТПЦ № 1 ОАО «ЧТПЗ». Приведен тепловой баланс существующей конструкции нагревательной печи, в результате анализа которого выявлены недостатки в ее работе. Кроме того, предложены мероприятия для устранения выявленных недостатков. Приведены ожидаемые результаты проведения реконструкции систем и способа транспортировки металла.

The method of calculation of heating of metal in the thermal furnace taking into account pulse system of heating is presented in article. The experimental dataobtained on the pusher furnace, heated by high-speed recuperative torches with pulse system of burning of fuel are submitted.

The technological, economic, and energy indices of high-technology modern metallurgical plants are analyzed.

In this work, we consider the problems of estimating the energy efficiency of applying a neural optimizer to tune a PID controller in controlling a laboratory heating furnace for cast bars. We estimate the electric power savings achieved when running the technological process with the optimizer as compared to a regular PID controller.

Step-type heating furnace is a kind of mechanized furnace hearth furnaces, due to the corrosion of heating furnace lifting framework is serious, which needs to repair. This article uses the Pro/E to build heating furnace lifting framework model, and then it is leaded to ANSYS which can analysis the stress of framework. Firstly, the framework model that has been corroded and damaged should be analyzed for summing up the framework’s damage and dangerous points and determining the framework reparative plan. Then framework model after being repaired needs to analyze with the same load, the analytical result of which should be compared with that of original design’s framework, and reparative plan should be corrected and examined. Finally, the reasonable framework reparative plan will be determined.

An algorithm and a program have been created for efficiently batching the slab charge of a continuous heating furnace. The charge is composed with allowance for each slab’s heating group.