Process control system for mass production of polrvinyl chloride

Abstract

A process control system for mass production of polrvinyl chloride comprises CS3000 data communication system (CS3000DCS) hardware and software. The hardware comprises an engineer station (also serving as a formula management station and an object linking and embedding process control (OPC) station), a multi-set operator station, a multi-set redundant control station, a network exchanger, a printer and the like. The engineering station is used for finishing the functions of programming configuration, program downloading, system maintenance and the like of the whole control system, and the engineering station simultaneously has the functions of formula data management and OPC data sending. Various data collecting input / output (I / O) cards are installed on the control station and connected with an on-site meter and a valve to finish the control of the whole production process. The DCS operation software can finish formula management, dosing, feeding, operation of a polymerizer, temperature control and the operation of kettle coating, purified water addition, catalyst addition, monomer addition, reaction, discharging, recovery and kettle cleaning for each unit. The process control system for the mass production of the polrvinyl chloride optimizes the control mass process of polymerizing production, is various in function and flexible and reliable in mass control method, fully utilizes the functions of the control station, reduces the number of the control station, and has good technical effects.

Description

[0001] 1. Technical field [0002] The invention relates to a production technology for realizing the control of the polymerization process in polyvinyl chloride production through configuration programming of the distributed control system, especially the production technology for realizing formula management and batch control of large-scale polymerization kettles with relatively advanced technology at present. [0003] 2. Background technology [0004] In the production process of polyvinyl chloride, the control of the polymerization tank part is more complicated, especially for polyvinyl chloride production units with a single tank volume of more than 100 cubic meters, the production process requires a large number of formula data and intermediate operating variables, taking 1 Take the polymerization kettle as an example: there are 77 formula data, 327 intermediate operation variables, 202 timers, and 357 operation status signs. At the same time, there are many valves and...

AI Technical Summary

Problems solved by technology

[0004] In the production process of polyvinyl chloride, the control of the polymerization tank part is more complicated, especially for polyvinyl chloride production units with a single tank volume of more than 100 cubic meters, the production process requires a large number of formula data and intermediate operating variables, taking 1 Take the polymerization kettle as an example: there are 77 formula data, 327 intermediate operation variables, 202 timers, and 357 operation status signs. At the same time, there are many valves and instruments in the polymerization part, and the production process has many and complicated steps.

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