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Whole-process intelligent operation regulation and control system of wet desulphurization device

A wet desulfurization and control system technology, applied in the field of air pollutant control, can solve the problems of high energy consumption and material consumption in the operation of desulfurization devices, and achieve the effect of high reliability

Active Publication Date: 2021-07-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This control method is difficult to meet the ever-increasing emission standards, and the only way to ensure the export of SO is to use excessive input of energy materials. 2 The concentration does not exceed the standard limit, resulting in excessive energy consumption and material consumption in the operation of the desulfurization unit

Method used

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  • Whole-process intelligent operation regulation and control system of wet desulphurization device
  • Whole-process intelligent operation regulation and control system of wet desulphurization device

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Embodiment 1

[0070] refer to figure 1 A whole-process intelligent operation control system of a wet desulfurization device, the system includes a pollutant removal module, an online monitoring module, an optimization control module and an intelligent modeling module. The pollutant removal module includes a desulfurization device for pollutant removal; the desulfurization device is the main pollutant removal device. The online monitoring module is used to monitor and collect historical operation data and real-time operation data of the desulfurization device and transmit them to the intelligent modeling module and optimization control module. It has a series of important functions such as information collection, preprocessing, integration, storage, and transmission. According to the real-time operating conditions, the optimization control module evaluates the operating cost of the pollutant absorption and removal system under different operating conditions in real time through a multi-objec...

Embodiment 2

[0115] A combined heat and power unit uses coal-blended sludge as fuel, with a rated evaporation capacity of 220t / h, and is equipped with a 50MW backpressure turbine generator. The whole-process intelligent operation control system of the wet desulfurization device is used for engineering verification. The whole-process intelligent operation and control system of the desulfurization device includes a pollutant removal module, an online monitoring module, an optimization control module and an intelligent modeling module. The main body of the desulfurization device is an absorption tower, with a total of four spray layers, and each spray layer is equipped with an independently operating circulation pump. The online monitoring module (online monitoring device) equipped with the desulfurization device is connected with the optimization control module through the distributed control system (DCS), and the real-time monitoring, query and export of historical data and partial control f...

Embodiment 3

[0121] A combined heat and power unit uses coal blended combustion sludge as fuel, with a rated evaporation capacity of 130t / h, and is equipped with a 25MW backpressure turbine generator. The whole process intelligent operation control system and method of the wet desulfurization device are used for engineering verification . In a 130t / h coal-fired thermal power unit, steam volume, inlet SO 2 Concentration and outlet SO 2 The change trend of the concentration is as Figure 5 shown. It can be seen from Figure 5 that the entrance loads of the two are basically the same, and the intelligently regulated entrance SO 2 The concentration fluctuated greatly, but the outlet SO under the control of the original DCS 2 The concentration fluctuates greatly and exceeds the sulfur dioxide emission standard many times, while the outlet concentration control under intelligent regulation is stable, which proves that intelligent regulation can effectively improve the shortcomings of the orig...

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Abstract

The invention relates to a whole-process intelligent operation regulation and control system of a wet desulphurization device. The whole-process intelligent operation regulation and control system comprises a pollutant removal module, an online monitoring module, an optimization control module and an intelligent modeling module. The system can accurately predict the influence of each control variable on the desulfurization efficiency, the operation cost and the product quality of the wet desulfurization system, accurately regulate and control the operation parameters such as the pH value, the frequency and the liquid level, and ensure that the outlet concentration stably reaches the standard under the working conditions of variable load and variable coal quality; energy consumption and material consumption distribution among devices such as a circulating pump, an oxidation fan and a gypsum dehydrator is coordinated, so that the cost of the wet desulphurization system is optimal; by-product components are controlled to ensure that the purity of the target substance reaches the standard; and safe, stable, economical and efficient operation of the wet desulphurization device is realized.

Description

technical field [0001] The invention belongs to the technical field of air pollutant control, and in particular relates to a whole-process intelligent operation control system of a wet desulfurization device. Background technique [0002] At present, common flue gas desulfurization devices can be divided into dry desulfurization, semi-dry desulfurization and wet desulfurization devices, among which wet desulfurization devices such as limestone / lime-gypsum method, magnesium method, sodium alkali method, ammonia method and seawater method Due to its high efficiency and good operation effect, it is widely used in coal-fired / oil-fired / gas-fired boilers, coal-fired boilers blended with other fuels, biomass boilers, and ultra-low emissions of sulfur dioxide in industries such as iron and steel, nonferrous smelting, building materials, chemicals, and ships. in the governance system. Wet desulfurization technology uses alkaline absorbent solution or slurry to contact with sulfur-co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/34B01D53/78B01D53/50
CPCB01D53/346B01D53/78B01D53/50B01D2257/302B01D2258/0283
Inventor 高翔郑成航周灿赵中阳苏秋凤张涌新翁卫国王凤君杨洋姚龙超李钦武张悠
Owner ZHEJIANG UNIV
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