年产5500吨聚羧酸钠盐高分子分散剂的工艺设计

Production process design of 5500 tons per year polycarboxylic acidsodium salt polymer dispersantAbstractThis project is manufacture process of Sodium polycarboxylate polymer dispersant,withexpected annual producing up to 5500 tons.As the result of our research,our team made outthe decision to produce the Sodium polycarboxylate polymer dispersant.In the first place,wewill use the method of solution polymerization to prepare MPEGAA,and then it willparticipate in the copolymerization with acrylic acid and odium styrene sulfonate to theSodium polycarboxylate polymer dispersant.We also depict the development status anddevelopment prospects of this dispersant.We believed we made the best choice in eachprocess,including polymerization process,materials,process appliances,as well as operationmethod.We calculated the material balance and thermal balance;besides we have donecalculation on equipment choosing,based on the calculation result,we meant to use thesuitable equipment on the manufacture process line and draw production process flow chart,reaction kettle diagram and plant plan.Based on our analyzing to the practical situation during polymerization,we adopt solutionpolymerization as the polymerizing method on this manufacture process to MPEGAA whichreaction with acrylic acid and odium styrene sulfonate to produce the Sodium polycarboxylatepolymer dispersant.According to the best proportion,adding material BPAMPEGAA:AA=1:1,AA:SSS:MPEGAA=4:1:2.Keyword:Sodium polycarboxylate;dispersant;copolymerization;solution polymerization