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Ammonia desulfurization method and ammonia desulfurization device

A technology of ammonia-based desulfurization and desulfurizer, applied in separation methods, chemical instruments and methods, lighting and heating equipment, etc., can solve the problems of high investment and operation costs, complex desulfurization tower system, etc., reduce investment, eliminate flue gas drag Tail phenomenon and generation of aerosol, effect of simplifying process flow

Active Publication Date: 2021-12-31
JIANGSU NEW CENTURY JIANGNAN ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the current level of understanding to solve the existing understanding problems, the number of desulfurization towers will increase and the system will become more and more complex. However, such a desulfurization tower not only has room for improvement in treatment effect, but also has a large investment and operation cost.

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  • Ammonia desulfurization method and ammonia desulfurization device

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Embodiment Construction

[0067] figure 1 Shows an exemplary embodiment according to the present invention ammonia desulfurization apparatus. The ammonia desulfurization flue gas treating means may be used for coal-fired boilers of power plant, or may be used for other chemical processing flue gas containing sulfur oxides. In the present invention relates to a desulfurization process of ammonia Unlike traditional pure ammonia desulfurization, but based on the additional ammonia desulfurization utilizing alkaline metal desulfurizing agent.

[0068] The ammonia desulfurization apparatus comprising an ammonia desulfurization tower, the ammonia desulfurization tower from bottom to top comprises a flue gas cooling unit 4, unit 5 and the flue gas absorption fine particulate control unit 6. Flue gas cooling unit 4 has an inlet flue 9. Containing SO 2 And SO 3 Flue gas, as a raw gas, generally have a higher temperature, into the flue gas flue gas cooling unit 4 via the inlet 9. Flue gas cooling unit 421 are forme...

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Abstract

The invention relates to an ammonia desulfurization method, in which flue gas containing SO2 and SO3 is desulfurized by means of an ammonia desulfurization device, ammonia is used as a first desulfurizer, and a metal alkaline desulfurizer is used as a second desulfurizer. The invention also relates to the ammonia desulfurization device, and the ammonia desulfurization method can be implemented by using the ammonia desulfurization device. According to the invention, SO2 and SO3 in the flue gas can be synergistically removed, and improvement can be realized in the aspects of solving flue gas trailing and aerosol generation.

Description

Technical field [0001] The present invention belongs to the field of environmental technology, particularly it relates to ammonia-based containing SO 2 And SO 3 Flue gas desulfurization apparatus and method. Background technique [0002] Currently there are several desulfurization technology, which, wet FGD technology most widely used. Common wet flue gas desulphurization technology limestone - gypsum, soda, ammonia and so on. [0003] Limestone - gypsum desulfurization, desulfurization limestone or lime as absorbent, which may be crushed limestone, ground into powder, mixed with water and agitated to prepare absorbent slurry. When using lime as absorbent, lime powder can be mixed with water to prepare a slurry absorption. In the desulfurization tower, the flue gas may be contacted with the absorbent slurry, mixing the flue gas SO 2 It may be calcium carbonate or a slurry of calcium hydroxide, to form calcium sulfite, calcium sulfite and may be further oxidized with air into the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/81B01D53/50B01D53/96F28D21/00
CPCB01D53/78B01D53/81B01D53/502B01D53/508B01D53/96F28D21/00B01D2251/304B01D2251/306B01D2251/602B01D2251/604B01D2251/606B01D2258/0283
Inventor 罗静刘凡
Owner JIANGSU NEW CENTURY JIANGNAN ENVIRONMENTAL PROTECTION
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