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Epitaxial circulating fluidized bed semi-dry desulfurization and dust removal system and desulfurization and dust removal method

A circulating fluidized bed and semi-dry desulfurization technology, which is applied to chemical instruments and methods, separation methods, and dispersed particle filtration, etc., can solve problems such as difficulty in hoisting, high cost, and complicated installation procedures of desulfurization towers, and achieve cost reduction , reduce cost, reduce the effect of the number of bags

Pending Publication Date: 2020-12-18
SHANDONG SHENHUA SHANDA ENERGY ENVIRONMENTAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flue gas desulfurization process is mainly completed in the desulfurization tower, in order to realize SO 2 ≤35mg / Nm 3 The requirements for ultra-low emissions usually require that the residence time of the flue gas in the desulfurization tower is ≥6s. The inventors found that under such requirements, the height of the desulfurization tower is usually higher, and the top elevation of the entire system is also higher, even higher than the boiler. The height of the roof, on the one hand, makes the desulfurization tower body and its attached civil works, steel beam structure costly, and on the other hand, the installation process of the desulfurization tower is complicated and difficult to hoist

Method used

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  • Epitaxial circulating fluidized bed semi-dry desulfurization and dust removal system and desulfurization and dust removal method
  • Epitaxial circulating fluidized bed semi-dry desulfurization and dust removal system and desulfurization and dust removal method

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Embodiment 1

[0052] An epitaxial circulating fluidized bed semi-dry desulfurization and dust removal system, which is equipped with a desulfurization tower system 1, a desulfurization tower extension system 2, a bag filter system 3, a material return system 4, and an extension fluidization system 5; the desulfurization tower system 1 consists of The return section 101, the acceleration section 102, the gradual expansion section 103, and the straight section 104 are composed; the desulfurization tower extension system 2 is composed of the extension section 201, the fluidization plate 202, and the fluidization air chamber 203; the bag filter system 3 is composed of a bag cleaning System 301, dust collector inlet 302, cloth bag 303, cloth bag warehouse 304, ash hopper 305, dust collector outlet flue 306; return system 4 is composed of return valve 401, fluidization chute 402; epitaxial fluidization system 5 It is composed of pipeline 501, heater 502 and booster fan 503; desulfurizer overflow s...

Embodiment 2

[0055] An epitaxial circulating fluidized bed semi-dry desulfurization and dust removal system, which is equipped with a desulfurization tower system 1, a desulfurization tower extension system 2, a bag filter system 3, a material return system 4, and an extension fluidization system 5; the desulfurization tower system 1 consists of The return section 101, the acceleration section 102, the gradual expansion section 103, and the straight section 104 are composed; the desulfurization tower extension system 2 is composed of the extension section 201, the fluidization plate 202, and the fluidization air chamber 203; the bag filter system 3 is composed of a bag cleaning System 301, dust collector inlet 302, cloth bag 303, cloth bag warehouse 304, ash hopper 305, dust collector outlet flue 306; return material system 4 is composed of return material valve 401, fluidization chute 402; epitaxial fluidization system 5 It is composed of pipeline 501, heater 502 and booster fan 503; desul...

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Abstract

The invention discloses an epitaxial circulating fluidized bed semi-dry desulfurization and dust removal system and a desulfurization and dust removal method, the system comprises a desulfurization tower comprising a vertical section and an epitaxial section, one end of the epitaxial section is communicated with the top of the vertical section, and the other end of the epitaxial section is obliquely arranged downwards; a fluidization air chamber is arranged at the bottom of the epitaxial section, and a fluidization plate is arranged at the top of the fluidization air chamber; an inlet of a dust remover is communicated with the tail end of the epitaxial section, a gas outlet of the dust remover is communicated with the fluidization air chamber, and a solid outlet of the dust remover is communicated with the bottom of the vertical section of the desulfurization tower through a chute. By adopting the desulfurization tower epitaxial scheme, flue gas and desulfurization agent powder can continuously react at the epitaxial section of the desulfurization tower, so that the height of the desulfurization tower can be effectively reduced, and the system investment is reduced.

Description

technical field [0001] The invention relates to the field of flue gas treatment, in particular to an epitaxial circulating fluidized bed semi-dry desulfurization and dust removal system and a desulfurization and dust removal method. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Circulating fluidized bed semi-dry desulfurization and dust removal technology can synergistically remove acid gas, mercury, HCl, HF, dust and other pollutants in flue gas, without generating desulfurization wastewater; flue gas temperature is always above the acid dew point, so equipment, flue No embalming required. At present, this technology is widely used in the environmental protection of c...

Claims

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Application Information

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IPC IPC(8): B01D53/83B01D53/80B01D53/50B01D46/02
CPCB01D46/023B01D53/50B01D53/508B01D53/80B01D53/83B01D2258/0283
Inventor 杨春振张波李洪梅
Owner SHANDONG SHENHUA SHANDA ENERGY ENVIRONMENTAL
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