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Variable cross section smoke throttling apparatus of desulphurization absorbing tower, and throttling method thereof

A desulfurization absorption tower and throttling device technology, applied in the field of desulfurization, can solve the problem that the flow rate of the absorption tower cannot be adjusted, and achieve the effects of increasing the gas-liquid contact rate, reducing consumption, and improving desulfurization efficiency

Active Publication Date: 2017-11-03
DATANG ENVIRONMENT IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the present invention provides a flue gas throttling device and a throttling method with a variable cross-section of a desulfurization absorption tower. The method solves the problem that the flow rate in the absorption tower cannot be adjusted due to the deep peak regulation of the thermal power plant, realizes the large-scale and segmented adjustment of the flow rate in the tower, effectively increases the gas-liquid contact rate, improves the desulfurization efficiency under different loads, and reduces the demister Flushing water consumption and absorption tower circulation pump power consumption

Method used

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  • Variable cross section smoke throttling apparatus of desulphurization absorbing tower, and throttling method thereof
  • Variable cross section smoke throttling apparatus of desulphurization absorbing tower, and throttling method thereof
  • Variable cross section smoke throttling apparatus of desulphurization absorbing tower, and throttling method thereof

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Effect test

Embodiment 1

[0038] Example 1, such as figure 1 As shown, a flue gas throttling device with variable cross-section of a desulfurization absorption tower is installed inside the desulfurization absorption tower. The desulfurization absorption tower also includes several spray layers and horizontally arranged demisters installed inside the desulfurization absorption tower. Throttle devices are arranged below each spray layer and below the mist eliminator;

[0039] The throttling device is circular and placed horizontally, its outer diameter corresponds to the inner diameter of the tower wall 1 of the desulfurization absorption tower, and each throttling device includes several throttling units evenly arranged along its circumferential direction;

[0040] Each throttling unit includes a fan-shaped flap and a flap shaft 2 arranged along the central axis of the fan-shaped flap. One end of the flap shaft 2 passes through the tower wall 1 vertically to connect the flap shaft drive device 7, and t...

Embodiment 2

[0053] Embodiment 2, the throttling method of the flue gas throttling device with variable cross-section of the desulfurization absorption tower described in the first embodiment, includes:

[0054] Such as image 3 , 4 As shown, when the boiler load is higher than 90% of the full load, each flap shaft driving device 7 controls the rotation of all the shafts of the corresponding throttling unit, controls all the flaps to stand up, and the flow area of ​​the desulfurization absorption tower is the largest ;

[0055] Such as Figure 5 , 6 As shown, when the boiler load is in the operating state of 80-90% of the full load, each flap shaft driving device 7 controls the first rotating shaft 23 of the corresponding throttling unit to rotate, driving the first flap 5 to be placed horizontally, and the reduction control Increase the flow area of ​​the desulfurization absorption tower, and at the same time close part of the slurry circulation pump to reduce the flushing water volum...

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Abstract

The invention provides a variable cross section smoke throttling apparatus of a desulphurization absorbing tower, and a throttling method thereof. The throttling apparatus is arranged in the desulphurization absorbing tower, the throttling apparatus is arranged below every spraying layer and every demister, the throttling apparatus is annular in shape and is horizontally arranged the external diameter of the throttling apparatus corresponds to the internal diameter of the tower wall of the desulphurization absorbing tower, and every throttling apparatus comprises a plurality of throttling units which are uniformly arranged along the circumference direction of the throttling apparatus; and every throttling unit comprises a sector-shaped turning plate and a turning plate shaft arranged along the central axis of the turning plate. Different turning plates are overturned to change the cross section of the absorbing tower, so a problem that the flow velocity in the absorbing tower cannot be adjusted due to the deep peak regulation of a heat-engine plant, the large-amplitude segmented regulation of the flow velocity in the tower is realized, the gas-liquid contact rate is effectively improved, the desulphurization efficiency under different loads is improved, and the flushing water consumption of the demister and the electricity consumption of an absorbing tower circulating pump are reduced.

Description

technical field [0001] The invention relates to the technical field of desulfurization, in particular to a desulfurization absorption tower, in particular to a flue gas throttling device and a throttling method with a variable cross-section of a desulfurization absorption tower. Background technique [0002] my country is one of the largest coal production and consumption countries in the world, and the proportion of coal in the energy structure is as high as about 80%. Therefore, SO2 in coal-fired flue gas is the main source of SO2 pollution, and the treatment of atmospheric SO2 is mainly based on wet flue gas desulfurization. This method has a wide range of applications and high desulfurization efficiency, and is the main desulfurization method in my country. [0003] In wet desulfurization, the absorption tower is the main and key equipment for flue gas desulfurization. However, with the country's adjustment of fossil fuel power generation and changes in the amount of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/50
CPCB01D53/50B01D53/80B01D2258/0283
Inventor 魏新王凤荣陈海杰杨春雨邹红果蔡子嘉李雯徐岩孙轶敏孙叶程高
Owner DATANG ENVIRONMENT IND GRP
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