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Pump-free starting method of boiler desulfurization system

A desulfurization system and boiler technology, applied in the field of boiler desulfurization system, to achieve the effect of ensuring safe and economical operation, reducing power consumption rate, and saving electricity

Inactive Publication Date: 2015-09-02
DATANG GUIZHOU YEMAZHAI POWER GENERATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention mainly solves the technical problems existing in the prior art, thereby providing a pumpless start-up method of a boiler desulfurization system with low power consumption and low power consumption

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  • Pump-free starting method of boiler desulfurization system
  • Pump-free starting method of boiler desulfurization system

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Embodiment Construction

[0017] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0018] The main idea of ​​the present invention is: during the start-up process of the desulfurization system, before the boiler is put into pulverized coal, the flue gas SO 2 The content will not exceed the specified value, and the flue gas temperature at the entrance of the absorption tower will not exceed 60°C, and the flue pressure is also within the range of the design value. Therefore, when the boiler is not fed with powder, it is completely unnecessary to run the slurry circulation Pump and booster fan. During this period, as long as the operation mode of the desulfurization system equipment is changed, the ignition conditions of the boile...

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Abstract

The invention discloses a pump-free starting method of a boiler desulfurization system. The pump-free starting method comprises the following steps: a, before ignition of a boiler, a slurry circulation pump is not started, and is forced to be in a running state logically so as to meet the ignition condition of the boiler; b, after ignition of the boiler, whether the SO2 content in flue gas reaches the set range or not or whether the flue gas temperature at the inlet of an adsorption tower of the desulfurization system reaches the set temperature or not is detected, if so, the slurry circulation pump is started to run, and the logically forced running state of the slurry circulation pump is released; c, whether the total load of the desulfurization system reaches the set power or not is detected, if so, a supercharge fan is operated. The electricity consumption rate of the desulfurization system is reduced, and the safe and economic running of the desulfurization system is ensured; at least 1500kW.h electricity can be saved when the desulfurization system is started each time.

Description

technical field [0001] The invention relates to the technical field of a boiler desulfurization system, in particular to a pumpless start-up method of a boiler desulfurization system. Background technique [0002] After the bypass baffle of the desulfurization system of the boiler is blocked, in order to ensure that the boiler does not extinguish the fire due to the desulfurization system and prevent the demister from being damaged due to high flue gas temperature, the traditional unit startup method needs to start at least 2 slurry circulation pumps and booster pumps first. The compressor runs to meet the boiler ignition conditions. This start-up method leads to large power consumption of desulfurization auxiliary equipment and high power consumption rate of desulfurization system. Contents of the invention [0003] The invention mainly solves the technical problems existing in the prior art, thereby providing a pumpless startup method of a boiler desulfurization system ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/50B01D53/96
Inventor 王荣华
Owner DATANG GUIZHOU YEMAZHAI POWER GENERATION