Application of environmental economic eva‎luation in the optimization and selection of the sequence of distillation towers in the separation process of vinyl chloride monomer (VCM)

3/5/2024 12:00:00 AM

Awareness of incorporating sustainability goals into chemical process design has increased as many governments and research institutions have made great efforts to recover valuable materials from chemical industry wastes. Therefore, this article presents the synthesis, design, and optimization for recycling two compounds of chloroform and ethylene chloride from the wastes generated in the production of vinyl chloride monomer, which can form the basis for reducing environmental pollution and also help to improve economic efficiency and reduce energy consumption. in this article, a new process is proposed. Following the requirements for reducing carbon emissions in the industry, the carbon tax and carbon emission rate were included in the calculation of the total annual economic-environmental cost (TACEV). Based on the Aspen Plus simulation, carbon emission reduction was considered a comprehensive optimization objective for process optimization. Optimization results using TACEV and TAC objective function scores, respectively, show symmetrical arrangement (SM-4) and indirect arrangement (SM-5) as the best arrangement. Using the SM-4 scheme instead of the SM-5 scheme results in an increase in capital cost and tax for that sector, but a 12% reduction in annual operating cost and a 10.5% reduction in a carbon tax for the operational sector, reducing the total annual environmental economic cost.

چيدمان¬ برج¬هاي تقطير , بهينه¬سازي , ارزيابي زيست¬محيطي-اقتصادي

Distillation tower arrangement , optimization , environmental economic assessment

parisa barzin

norollah kasiri