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Ammonia preparation device for flue gas denitration system

A technology for ammonia gas preparation and ammonia gas application in the field of flue gas denitrification

Pending Publication Date: 2019-03-29
北京工大环能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main purpose of the present invention is to solve the problem of the preparation of the reductant ammonia required by the flue gas denitrification system

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  • Ammonia preparation device for flue gas denitration system
  • Ammonia preparation device for flue gas denitration system

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Embodiment Construction

[0017] In the following, the present invention will be further described by taking the flue gas denitrification system of a 4.4MW gas-fired internal combustion engine unit of a distributed energy station as an example in conjunction with the drawings.

[0018] A distributed energy station 4.4MW gas internal combustion engine unit SCR flue gas denitrification system, such as figure 1 with figure 2 , the flue gas temperature at the exhaust outlet of the gas internal combustion engine is 430-550°C, the highest can reach 600°C, the power generation output is 4.4MW, and the flue gas volume is 19888Nm in dry state when the load rate of the gas internal combustion engine is 100%. 3 / h, at standard state, dry basis 5%O 2 condition NO x Both are 500mg / Nm 3 The flue gas outlet temperature of lithium bromide equipment 2 is 145°C; the suitable temperature range of catalyst 4 is 170-400°C; a heat exchanger 16 is added between the SCR reactor 3 and the chimney 5.

[0019] The flue gas ...

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Abstract

The invention discloses an ammonia preparation device for a flue gas denitration system. The ammonia preparation device comprises an ammonia generator inner wall, a first efficiency-improving ring, afirst turbulent flow cone, a second efficiency-improving ring, a third efficiency-improving ring and a second turbulent flow cone; the ammonia generator inner wall is in a cylindrical shape; the section of the first efficiency-improving ring is an oblique fan-shaped face; the sections of the second efficiency-improving ring and the third efficiency-improving ring are each in an oblique fan shape,and both the first turbulent flow cone and the second turbulent flow cone are conical bevels; and the first efficiency-improving ring, the first turbulent flow cone, the second efficiency-improving ring, the third efficiency-improving ring and the second turbulent flow cone are arranged sequentially in the axis direction of an ammonia generator. The ammonia preparation device for the flue gas denitration syste has the advantages of high ammonia preparation efficiency, energy conservation, environmental protection, safety, reliability, simple structure, low manufacturing and operation costs andthe like, and through optimization design of structure of the ammonia generator, the ammonia conversion rate of urea is increased.

Description

technical field [0001] The invention relates to an ammonia gas preparation device used in a flue gas denitrification system, belonging to the field of flue gas denitrification. Background technique [0002] With the development of social economy, especially industrial economy, air pollution is becoming more and more serious. One of the main components of air pollutants is nitrogen oxides. Nitrogen oxides not only stimulate the human respiratory system, damage animals and plants, and destroy the ozone layer, but are also one of the main substances that cause the greenhouse effect, acid rain, and photochemical reactions. The emission limits of nitrogen oxides tend to be stricter all over the world, and thermal power plants, waste incineration plants and cement plants are the main sources of nitrogen oxide emissions. [0003] At present, the technical solutions for reducing nitrogen oxide emissions mainly include: (1) Low-nitrogen combustion technology, that is, to control the...

Claims

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Application Information

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IPC IPC(8): C01C1/08B01D53/94B01D53/56
CPCB01D53/9409C01C1/086B01D2258/0283B01D2251/2062Y02P20/10
Inventor 黄庆华
Owner 北京工大环能科技有限公司