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DCS (distributed control system) and control method for sodium persulfate and potassium persulfate production apparatuses

A technology of sodium persulfate and potassium persulfate, which is applied in general control systems, control/regulation systems, program control, etc., can solve problems such as low labor productivity, instability, and low product quality, and improve labor efficiency and utilization efficiency and improve product quality

Pending Publication Date: 2018-06-29
SHANGHAI TIANTAN AUX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the particularity of this industry, even the automatic control of instruments is not used much. Many factories are still in the workshop-style production mode, with low labor productivity, low product quality and instability.

Method used

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  • DCS (distributed control system) and control method for sodium persulfate and potassium persulfate production apparatuses
  • DCS (distributed control system) and control method for sodium persulfate and potassium persulfate production apparatuses
  • DCS (distributed control system) and control method for sodium persulfate and potassium persulfate production apparatuses

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Embodiment

[0049] Such as figure 1 , figure 2 , image 3 Shown, a kind of sodium persulfate and potassium persulfate production unit DCS control system of the present invention, it comprises DCS control system, sodium persulfate production unit and potassium persulfate production unit.

[0050] The block diagram of the DCS control system of the present invention is shown in figure 1 , the entire DCS control system, including two system cabinets located in the central control room (each system cabinet has a main controller), and three I / O control cabinets located on the site of the ammonium persulfate production plant, and Two I / O control cabinets installed at the site of sodium persulfate and potassium persulfate production plant.

[0051] figure 1 The central control room is equipped with two main controllers (10# main controller, 11# main controller), two switches (switch A, switch B), two printers, four operating stations (51 #operation station, 52# operation station, 53# oper...

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Abstract

The invention discloses a DCS (distributed control system) and control method for sodium persulfate and potassium persulfate production apparatuses. The DCS, a sodium persulfate production apparatus and a potassium persulfate production apparatus are involved; the DCS control system comprises a master controller, an exchanger and an operating station; the master controller is used for controllingthe sodium persulfate and potassium persulfate production apparatuses in real time; the sodium persulfate and potassium persulfate production apparatuses are provided with field I / O stations; all PLCs(programmable logic controllers) of field devices are connected with the field I / O stations; the field I / O stations are connected with the master controller of the DCS through a DP (decentralized periphery) bus. Through the application of the DCS, it is fully possible to use various large-sized evaporation and crystallization apparatuses and achieve stable production during sodium persulfate andpotassium persulfate production; therefore, high automation, large size and modernization are achieved for the sodium persulfate and potassium persulfate production apparatuses.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and relates to a DCS control system and a control method of a sodium persulfate and potassium persulfate production device. Background technique [0002] Sodium persulfate and potassium persulfate are important chemical additives. It can be widely used in special additives for the production of high-grade electronic industry circuit boards, special initiators for vinyl monomer polymerization, high-grade textile printing and dyeing treatment agents, soil remediation agents, environmental protection water treatment agents, analytical reagents, etc. [0003] The production process of sodium persulfate includes: the electrolysis process of electrolytic sodium sulfate, ammonium sulfate and sulfuric acid mixture, or the chemical synthesis method of sodium persulfate obtained by the reaction of ammonium persulfate and sodium hydroxide. The process of obtaining sodium persulfate by electroly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418C01B15/08
CPCG05B19/41865G05B19/41875C01B15/08G05B2219/25232Y02P90/02
Inventor 张天峰傅瑞芳
Owner SHANGHAI TIANTAN AUX
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