Hydrogen Chloride Production from Polyvinyl Chloride Waste

This study approaches the economics of gaseous Hydrogen Chloride (HCl) production from polyvinyl chloride (PVC) waste in the United States. The process under analysis is a pyrolysis conducted in two continuous reactors. Initially, HCl and chlorinated hydrocarbons (Cl-HCs) are removed from the plastic in the first reactor and HCl is purified. The plastic is then sent to a second reactor to finish pyrolysis and, finally, the pyrolysis gases are directed to distillation to produce benzene and fuel oil as by-products

The report provides a comprehensive study of Hydrochloric Acid production and related Hydrochloric Acid production cost, covering three key aspects: a complete description of the Hydrochloric Acid production process examined; an in-depth analysis of the related Hydrochloric Acid plant capital cost (Capex); and an evaluation of the respective Hydrochloric Acid plant operating costs (Opex).

The Hydrochloric Acid production process description includes a block flow diagram (BFD), an overview of the industrial site installations, detailing both the process unit and the necessary infrastructure, process consumption figures and comprehensive process flow diagrams (PFD). The Hydrochloric Acid plant capital cost analysis breaks down the Capex by plant cost (i.e., ISBL, OSBL and Contingency); owner's cost; working capital; and costs incurred during industrial plant commissioning and start-up. The Hydrochloric Acid plant operating costs analysis covers operating expenses, including variable costs like raw materials and utilities, and fixed costs such as maintenance, labor, and depreciation.

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