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Intelligent optimization and adjustment system and method for combustion system of hedging wall/arch combustion boiler

A technology for adjusting the system and boiler combustion, applied in the direction of combustion method, control combustion, combustion equipment, etc., can solve the problem of partial coking of steam temperature deviation, achieve the effect of solving steam temperature deviation, improving uniformity, and improving the level of automatic control

Pending Publication Date: 2020-11-24
ZHEJIANG ZHENENG TECHN RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a system and method for intelligent optimization and adjustment of the combustion system of the opposite wall type / arch type combustion boiler, which can effectively solve the problem of combustion in the opposite wall type combustion boiler and the arch type combustion boiler. The deviation of steam temperature and serious local coking caused by both are especially suitable for the counter-swirl combustion boiler with wall combustion method and the W flame boiler with double arch combustion method.

Method used

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  • Intelligent optimization and adjustment system and method for combustion system of hedging wall/arch combustion boiler
  • Intelligent optimization and adjustment system and method for combustion system of hedging wall/arch combustion boiler

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Embodiment 1

[0051] The object of this embodiment is a 600MW supercritical counter-swirl combustion boiler. The opposed swirling combustion boiler includes furnace 1, water wall 1-1, panel superheater 1-2, high temperature superheater 1-3, high temperature reheater 1-4, low temperature superheater 1-5, low temperature reheater 1-6, economizer 1-7, lower furnace 2, upper furnace 3, upper horizontal flue of furnace 4, shaft flue 5, economizer outlet flue 6, combustion system, pulverizing system. Wherein the combustion system includes a burner 7-1, a burner air box 7-2, an overburning air nozzle 7-3, and an overburning air air box 7-4. The pulverizing system includes a coal mill 10-1, a separator 10-2, and a primary air powder pipe 10-3.

[0052] The furnace 1 is composed of the front wall, the rear wall and the water-cooled walls 1-1 on both sides. The furnace 1 is divided into the lower furnace 2 and the upper furnace 3. Three layers of burners 7-1 are arranged on the front and rear walls,...

Embodiment 2

[0059] This embodiment proposes an adjustment method for the intelligent optimization and adjustment system of the combustion system of the opposing wall type / arch type combustion boiler, which mainly includes the following steps:

[0060] Step S1: Analyze and monitor the temperature and component concentration distribution of flue gas at the exit of the high-temperature superheater in the horizontal flue of the furnace, as well as the concentration distribution of the flue gas component at the flue gas side of the economizer exit, and the panel superheater, high-temperature superheater, The temperature rise of the high-temperature reheater tube panel, and the evaluation of the deviation of the combustion side in the furnace;

[0061] (1) According to the distribution of the temperature rise of the tubes at the same position of the panel superheater, high temperature superheater and high temperature reheater along the width direction of the furnace measured by the temperature r...

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Abstract

The invention relates to an intelligent optimization and adjustment system for a combustion system of a hedging wall / arch combustion boiler. The intelligent optimization and adjustment system comprises an online adjustment control system and an online monitoring system; the online adjustment control system comprises a primary total air volume online adjustment system, a secondary total air volumeonline adjustment system, a same-layer over fire air volume online adjustment device, a single combustor powder volume online adjustment system and a single over fire air volume online adjustment system; and the online monitoring system comprises a primary air powder pipe air volume and powder volume online monitoring system, a high-temperature heated surface same-screen tube bundle temperature rising monitoring system and an economizer outlet flue gas composition distribution monitoring system. The intelligent optimization and adjustment system has the beneficial effects that the online adjustment control system and the online monitoring system of two kinds of boiler combustion systems are added, some existing manual adjustment modes are changed into electric or pneumatic adjustment modes, new monitoring means is added in a furnace, and the automatic control level of combustion systems of coal-fired power station boilers is improved.

Description

technical field [0001] The invention belongs to the technical field of coal-fired power generation, and relates to an intelligent optimization adjustment control system of a combustion system that can effectively solve problems such as deviation of steam temperature and severe local coking caused by uneven combustion in a wall-to-wall combustion boiler and an arch-type combustion boiler. The method is especially suitable for the counter swirl combustion boiler adopting the wall combustion mode and the W flame boiler adopting the double arch combustion mode. Background technique [0002] In order to solve the increasingly serious problem of abandoned wind (light and water), improve the capacity of new energy consumption, and improve the operational flexibility of thermal power units have become an urgent task. Participating in deep peak regulation will be the normal operation of coal-fired power units. The wall-fired boiler represented by the opposite swirl combustion boiler ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C7/00F23L9/00F23N1/02G06F30/20G06F119/08
CPCF23C7/00F23L9/00F23N1/022G06F30/20G06F2119/08
Inventor 童小忠朱青国陈勤根徐书德解剑波项群扬王准冯培良陈国庆
Owner ZHEJIANG ZHENENG TECHN RES INST
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