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A Method to Reduce Steam Consumption of ECF Bleaching Based on Operation Optimizing
- Source :
- Processes, Vol 9, Iss 928, p 928 (2021), Processes, Volume 9, Issue 6
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- Development of paper industry has been restricted by resources, energy and environment deeply<br />further reducing energy consumption becomes an urgent problem to be solved. In this paper, the calculating model of steam consumption in bleaching process is established under the premise of ensuring product quality and controlling bleaching cost. Then, an optimization model for minimizing steam consumption is constructed. Compared with before optimization, the steam consumption of the optimized bleaching system reduced by 19.48% (0.5014 t/adt) at a loss of 0.11% brightness (0.1 ISO%) and 5.17% viscosity (33 mL/g). The amount of chemicals should be increased to ensure the quality of the pulp while decreasing the bleaching temperature to reduce steam consumption, the cost of bleaching pulp has decreased by 1.62% (3.19 USD/adt) after optimization. The verification experiments showed all the pulp quality indices can meet the requirements of bleached pulp.
- Subjects :
- 0106 biological sciences
steam consumption
020209 energy
Bioengineering
02 engineering and technology
TP1-1185
engineering.material
01 natural sciences
010608 biotechnology
0202 electrical engineering, electronic engineering, information engineering
Chemical Engineering (miscellaneous)
system modeling
cost saving
QD1-999
Consumption (economics)
ECF bleaching
Process Chemistry and Technology
Pulp (paper)
Chemical technology
Energy consumption
Pulp and paper industry
Cost savings
Chemistry
engineering
Environmental science
optimization
Subjects
Details
- Language :
- English
- ISSN :
- 22279717
- Volume :
- 9
- Issue :
- 928
- Database :
- OpenAIRE
- Journal :
- Processes
- Accession number :
- edsair.doi.dedup.....75b03120201f9edb2b474fcd849e4762