Double-tower double-circulation limestone wet method desulfurization device and method

A technology of wet desulfurization and limestone, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles. It can solve the problems that desulfurization technology cannot achieve high desulfurization efficiency, long outage time for desulfurization equipment transformation, poor adaptability of coal quality, etc. problems, to achieve the effect of easy optimization and quick adjustment, quick adaptation to coal type changes and load changes, and reliable equipment

Active Publication Date: 2013-02-13
BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENG
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Problems solved by technology

[0004] The present invention provides a double-tower and double-circulation limestone wet desulfurization device and method, to solve the problems that the existing limestone wet desulfurization technology cannot achieve high desulfurization efficiency, the moisture content of gypsum is high, the outage time of the desulfurization device is too long, and the Technical Problems of Poor Coal Quality Adaptability

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  • Double-tower double-circulation limestone wet method desulfurization device and method

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Embodiment Construction

[0037] Examples see figure 1 As shown, this double-tower double-circulation limestone wet desulfurization device includes a flue gas purification part, an absorbent supply part, a slurry oxidation crystallization part and a gypsum slurry dehydration part.

[0038] The flue gas purification part is composed of a primary circulation absorption tower 1 and a secondary circulation absorption tower 2, and the primary circulation flue gas outlet 26 at the top of the primary circulation absorption tower 1 passes through the transmission flue 29 and the secondary circulation absorption tower 2 The secondary circulation flue gas inlet 27 in the middle is connected, and the secondary circulation net flue gas outlet 28 at the top of the secondary circulation absorption tower 2 is communicated with the atmosphere through the exhaust flue 34 .

[0039] The inner lower section of the primary circulation absorption tower 1 has a primary circulation absorption tower slurry pool 32, and the up...

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Abstract

The invention discloses a double-tower double-circulation limestone wet-method desulfurization device and method. The double-tower double-circulation limestone wet-method desulfurization device comprises a smoke purification part, an absorbent supply part, a slurry oxidization and crystallization part and a gypsum slurry dehydration part, wherein the smoke purification part consists of a first-stage circulation absorption tower and a second-stage circulation absorption tower; the absorbent supply part consists of a gypsum slurry tank, a gypsum slurry pump and a slurry supply pipeline; the slurry oxidization and crystallization part consists of a oxidization fan, a first-stage circulation absorption tower oxidization spraying gun, a second-stage circulation absorption tower oxidization spraying gun and an oxidization air pipeline; and the gypsum slurry dehydration part consists of a first-stage circulation gypsum discharging pump, a gypsum whirlcone and a vacuum dehydration belt conveyer. The desulfurization device is extremely high in desulfurization efficiency, and the aims of reducing the sulfur dioxide and purifying air are fulfilled; and moreover, gypsum with extremely high quality can be obtained.

Description

technical field [0001] The invention relates to the technical field of limestone wet desulfurization, in particular to a limestone wet desulfurization device and a flue gas desulfurization method. Background technique [0002] At present, my country's environmental protection requirements for thermal power plants are becoming more and more stringent, and the emission standards of air pollutants in thermal power plants have been further improved, and the task of desulfurization and emission reduction faced by thermal power plants is becoming more and more severe. According to the Ministry of Environmental Protection's "Emission Standards of Air Pollutants for Thermal Power Plants" (GB13223-2011), the existing desulfurization devices in most thermal power plants cannot meet the new emission requirements, and it is necessary to increase the capacity of existing desulfurization facilities to improve Desulfurization efficiency. [0003] The existing limestone wet desulfurization...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/50
Inventor 高建民宋鑫金鑫陈训强里瑞琳
Owner BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENG
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