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A denitration ammonia gas pretreatment system

A pretreatment, ammonia technology, applied in gas treatment, chemical/physical process, mixer, etc., can solve problems such as safety hazards

Active Publication Date: 2016-11-30
DATANG ENVIRONMENT IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the volume concentration of ammonia in the air reaches 16-25%, it will form a Class II flammable and explosive mixture, which poses a very large safety hazard.
In addition, the raw material state of existing industrial ammonia is often liquid

Method used

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  • A denitration ammonia gas pretreatment system
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  • A denitration ammonia gas pretreatment system

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Embodiment Construction

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0034] Such as figure 1 Said, in one embodiment, a kind of denitrification ammonia pretreatment system is provided, comprising: liquid ammonia evaporation device 100, ammonia air mixing device 300, dilution air supply device 200 that provides system air to ammonia air mixing device, As shown in the figure, it is generally one or more sets of dilution fans.

[0035] to combine figure 1 and figure 2 As shown, the liquid ammonia evaporating device 100 includes: an evaporator body 104 having a cavity containing medium W (generally warm water); a liquid ammonia heat exchanger 108 arranged in the evaporator body 104; a liquid ammonia heat exchanger 108 One end is connected with the liquid ammonia inlet, and the other end is connected with an ammonia gas collection device 106 arran...

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Abstract

A denitration ammonia gas pretreatment system is provided. The system includes a liquid ammonia evaporation device and an ammonia gas-air mixing device. The system allows industrial ammonia to be gasified and diluted rapidly, safely and stably into an ammonia gas-air mixture having a stable temperature and a uniform concentration, ensures stable running of denitration systems and host systems of main factories, and ensures that nitrogen oxides discharged from a denitration outlet reach the standards.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to the technical field of flue gas denitrification treatment, and in particular to a denitrification ammonia gas pretreatment system. Background technique [0002] Boilers burning fossil fuels (such as coal, oil, natural gas) produce a large amount of flue gas, which contains harmful substances such as nitrogen oxides (NOx), a greenhouse gas that destroys the ozone layer. Direct harm to human health; Participate in the formation of photochemical smog, acid rain, and environmental pollution; In order to reduce the harm caused by NOx to the environment and humans, the state has put forward more and more strict requirements on the NOx emission concentration in the flue gas produced by boilers. In order to achieve a lower concentration of NOx emissions and reduce and eliminate the harm of NOx to humans, before the boiler flue gas is discharged into the atmosphere, it us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F5/06B01D53/90B01D53/56
CPCB01D53/56B01D53/90B01D2251/2062B01D2258/0283B01D2259/122B01F25/45
Inventor 刘玉新陆生宽
Owner DATANG ENVIRONMENT IND GRP
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