A customized spent-chemical pH-neutralization system for handling corrosive waste streams at a petrochemical plant in China is described in Technical Bulletin TL-173. The brochure explains the reasons for specifying thermoplastics for the treatment tank (polypropylene), pumps (polypropylene), and pipes and fittings (chlorinated polyvinyl chloride, CPVC) in this packaged system, rather than the stainless steels and exotic alloys originally considered. These reasons included initial and installation costs, product availability, and maintenance related to the pH variations involved with the highly acidic and alkaline waste streams, sudden temperature changes, and anticipated harsh outdoor conditions.
Company
Vanton Pump & Equipment Corp.