Process control system for mass production of polrvinyl chloride

A process control system, polyvinyl chloride technology, applied in the direction of electrical program control, comprehensive factory control, etc., can solve the problems of many steps, complex production process, and complicated polymerization kettle control, and achieve the effect of reducing the number of use

Active Publication Date: 2012-07-18
SHENYANG HUAKONG TECH DEV
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  • Abstract
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  • Claims
  • Application Information

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

Method used

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  • Process control system for mass production of polrvinyl chloride
  • Process control system for mass production of polrvinyl chloride
  • Process control system for mass production of polrvinyl chloride

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0079] The polyvinyl chloride batch production process control system of the present invention includes two parts: hardware and software.

[0080] Take 6 kettles with an annual output of 250,000 tons of PVC as an example:

[0081] The hardware of the polyvinyl chloride batch production process control system of the present invention includes: an engineer station 1, six operator stations 2, three redundant control stations 3, a network switch 4 and a printer 5. The engineer station 1 is used for the programming, configuration, maintenance and debugging of the control system. It also serves as a recipe management server and also has the function of an OPC data server.

[0082] Six operator stations 2, display various information and data of the entire production process, including flow chart screens, trend curve screens, alarm screens, etc., call formula setting and report printing procedures, and start or Stop the polymerization batch control program for monitoring the PVC production...

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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...

Claims

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Application Information

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IPC IPC(8): C08F14/06C08F2/00C08F2/01G05B19/418
Inventor 李洪军李治国孔庆儒臧春华
Owner SHENYANG HUAKONG TECH DEV
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