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A control method, system and application of a steam drying device

A drying device and control system technology, which is applied in the direction of drying gas arrangement, drying, dryer, etc., can solve the problems of affecting the accuracy of volatile data feedback, large volatile error, and low degree of automation, so as to enhance production safety Performance and stability, stable product quality, and precise control of the effect

Active Publication Date: 2021-03-30
内蒙古君正化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this traditional process and operation not only has feedback lag, high labor intensity, and low degree of automation, but also has large errors in manual detection of volatile content, which greatly affects the accuracy of constant volatile content data feedback.

Method used

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  • A control method, system and application of a steam drying device
  • A control method, system and application of a steam drying device
  • A control method, system and application of a steam drying device

Examples

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Effect test

Embodiment 1

[0051] This embodiment provides an example of drying PVC with the steam drying control method of the present invention.

[0052] The PVC slurry (with a water content of about 80%) prepared and discharged by a conventional polymerization kettle method is separated from most of the water by a centrifuge to obtain a wet PVC with a water content of 20%-25%, and then a screw conveyor is used to form a high-humidity The filter cake is sent to the cyclone drying equipment (steam drying device).

[0053] The Ruishou intelligent optimization control system is bidirectionally connected with the PVC drying DCS system through OPC communication, and the on-site production data is collected in real time through the DCS system. Real-time tracking of the control instructions sent by the DCS control system to realize real-time control and optimal control of field equipment.

[0054] The specific production steps are as follows:

[0055] (1) Ruishou intelligent optimization control system is ...

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Abstract

The invention relates to the technical field of chemical production, in particular to a steam drying device control method and system and application. The control method comprises the steps that (1) afirst production data packet is acquired, and after a Ruishou intelligent optimization control system conducts calculation and amplitude limiting on the first production data packet, a temperature set value of a discharge opening is obtained; (2) a second production data packet and a third production data packet are obtained, the Ruishou intelligent optimization control system conducts calculation and amplitude limiting on the production data packets, and then a threshold of a feeding valve and a threshold of a main steam valve are obtained, wherein the second production data packet and the third production data packet both include the temperature set value of the discharge opening; and (3) the Ruishou intelligent optimization control system forms a control instruction according to the threshold of the feeding valve and the threshold of the main steam valve, the control instruction is sent to a steam drying device to control operation of the steam drying device, and the above steps are repeated, so that the temperature of a drying bed of the steam drying device is kept stable. The automatic control rate is high, the water content control precision of a final product is high, and the labor intensity of an operator is small.

Description

technical field [0001] The invention relates to the technical field of chemical production. Specifically, it relates to a control method, system and application of a steam drying device. Background technique [0002] At present, the control of the drying device in the drying process of the chemical industry mostly relies on manual control. Only by analyzing, modeling, looking for device characteristics and control algorithms based on a large number of collected field historical data can the on-site operator better control the drying process, and Cooperate with manual frequent inspection of product quality, and timely feedback to production control personnel for real-time regulation of the drying process. [0003] Especially in the polyvinyl chloride (PVC) production industry, the drying process mainly uses the traditional cyclone drying process, and the control mode of the cyclone drying bed is manually controlled. The temperature of the drying bed controls fluctuates great...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B21/06
CPCF26B21/06
Inventor 李瑛段燕飞王婷王洪亮郑祥胜史明利张喆吴海登
Owner 内蒙古君正化工有限责任公司
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