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The article states that in recent years, increasing demand for fine separation of aggressive and high-temperature liquid media (especially aggressive waste water) has dictated the need to develop a new generation of filtration equipment. Processes of cross-flow micro- and ultra-filtration, that is, processes of membrane separation of solutions and suspensions under pressure with simultaneous movement of the liquid being separated along the surface of the membrane filtering element, have come into increasingly broader use for solution of these problems.

The article states that the separation of suspensions is a production process that has come into widespread use in many branches of industry. The equipment used for this process should therefore be effective and highly productive, reliable, and long-lived. Self-regenerating filters consisting of cylindrical housing 4 with cylindrical filtering element 3 mounted coaxially within the housing are classed with this type of equipment. It was established from the processing of the experimental data obtained that the tangential velocity component of the liquid flow in the filter remains virtually unchanged over the height and radius of the separation zone.

The article states that about 90% of all mechanical and technological failures in chemical engineering plant occur gradually by the change in one or more output parameters. Such failures are called parametric, and the parameters whose monitoring enables one to forecast failure are called technical state parameters. Natural ageing occurs in any plant, and a model can be formulated as a monotone random process of changes in a technical state parameter.

The article states that steel vessels and apparatus cladded with copper (silver) by the method of vacuum-diffusion welding are classed among the most modern types of equipment for the processing and storing of aggressive liquids, gases, and other media used in chemical processes. Many years of practical experience make it possible to successfully master new tasks--fabrication of equipment for implementation of energy-saving technologies and reactor vessels for utilization of extremely aggressive materials and toxins; this provides for solution of problems involving the cleanness and safety of our planet.