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A denitrification ammonia gas pretreatment system

A pretreatment, ammonia technology, applied in the field of denitrification ammonia pretreatment system, can solve problems such as safety hazards

Active Publication Date: 2020-01-07
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 has 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 denitrification ammonia gas pretreatment system
  • A denitrification ammonia gas pretreatment system
  • A denitrification 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

The invention provides a denitrification ammonia gas pretreatment system, comprising: a liquid ammonia evaporation device and an ammonia air mixing device. It can quickly, safely and stably gasify and dilute industrial ammonia into ammonia-air mixed gas with stable temperature and uniform concentration, ensure the stable operation of the denitrification system and the host system of the main plant, and effectively ensure that the discharge of nitrogen oxides at the denitrification outlet meets the standard emission.

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 Patents(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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