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Liquid ammonia evaporator for denitration device line

A liquid ammonia evaporator and liquid ammonia technology, applied in the field of liquid ammonia evaporators, can solve the problems of low denitrification efficiency and achieve the effects of improving heat exchange efficiency, improving mixing adequacy, and increasing heat exchange area

Pending Publication Date: 2017-09-05
CHENGDU GUOHUA ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of this application is to provide a denitrification equipment line device that can improve the denitrification efficiency in view of the problem that the denitrification efficiency of the current denitrification equipment line is not high

Method used

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  • Liquid ammonia evaporator for denitration device line
  • Liquid ammonia evaporator for denitration device line
  • Liquid ammonia evaporator for denitration device line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0138] Example 1, such as figure 1 and 2 Shown:

[0139] A liquid ammonia evaporator 10 for a denitrification equipment line, comprising a liquid ammonia delivery pipe 100, one end of the liquid ammonia delivery pipe 100 is a liquid ammonia inlet port 101 connected to a liquid ammonia source, and the other end is an ammonia gas outlet port 102 A plurality of cooling fins 103 are arranged outside the liquid ammonia delivery pipe 100 .

[0140] In the liquid ammonia evaporator 10 of the present application, the heat exchange area between the liquid ammonia delivery pipe 100 and the external space is increased by arranging cooling fins 103 outside the liquid ammonia delivery pipe 100, so that the liquid ammonia can be transported more completely. The gasification of ammonia gas is formed, that is, the gasification rate of liquid ammonia is improved, so that the mixing adequacy of ammonia gas and flue gas is improved, on the one hand, the denitration efficiency is improved, and ...

Embodiment 2

[0156] Example 2, such as image 3 as shown,

[0157] A conditioning tube for denitrification equipment line, comprising a conditioning cylinder, one end of the conditioning cylinder is a conditioning inlet 107, the other end is a conditioning outlet 108, the conditioning tube also includes an ammonia gas inlet Pipe 109, one end of the ammonia gas inlet pipe 109 extends into the tempering cylinder, and the other end is located outside the tempering cylinder.

[0158] The quenching and tempering tube of the present application, when in use, blows air at the quenching and tempering inlet 107 or other chemical reactions in the middle of the denitrification process to dilute the high-concentration ammonia gas and make it into lower-concentration ammonia Gas, on the one hand, directly makes the liquid ammonia fully gasified, on the other hand, it is also more conducive to the uniform mixing of ammonia gas and flue gas, so that the denitrification efficiency can be improved and the...

Embodiment 3

[0171] Example 3, such as Figure 4 and 5 Shown:

[0172] An ammonia injection grid used for a denitrification equipment line, comprising an ammonia injection main pipe 114, one end of the ammonia injection main pipe 114 communicates with the quenching and tempering outlet 108 of the quenching and tempering tube, and the other end is located at the inlet pipe of the denitration tower 117. In the flue gas pipeline 115 , the part of the ammonia injection main pipe 114 located in the flue gas pipeline 115 is an ammonia injection section, and several second nozzles 118 are arranged on the ammonia injection section.

[0173] The ammonia injection grid of the present application sprays the low-concentration ammonia gas mixed with air into the flue gas pipe 115 through the second nozzle 118, so that the flue gas and ammonia gas are fully mixed before entering the denitrification tower 117, ensuring In the denitration tower 117, the nitrogen oxides in the flue gas can more fully con...

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Abstract

The invention relates to the technical field of air pollution prevention of environmental protection industries, in particular to a liquid ammonia evaporator for a denitration device line. The liquid ammonia evaporator comprises a liquid ammonia conveying pipe, one end of the liquid ammonia conveying pipe is a liquid ammonia inlet end connected with a liquid ammonia source, the other end of the liquid ammonia conveying pipe is an ammonia outlet end, and a plurality of radiating fins are arranged outside the liquid ammonia conveying pipe. According to the liquid ammonia evaporator, the radiating fins are arranged outside the liquid ammonia conveying pipe, the heat exchange area between the liquid ammonia conveying pipe and outer space is enlarged, so that liquid ammonia can be more completely gasified to form ammonia in the conveying process of the liquid ammonia, the gasification rate of the liquid ammonia is increased, so that the mixed sufficiency of the ammonia and flue gas is improved, on one hand, denitration efficiency is improved, the removal rate of nitric oxide in the flue gas is increased, on the other hand, and the liquid ammonia evaporator solves the problem that the ammonia escapes as the ammonia cannot completely react.

Description

technical field [0001] This application relates to the technical field of air pollution control in the environmental protection industry, in particular to a liquid ammonia evaporator used in a denitrification equipment line. Background technique [0002] In industrial flue gas, it usually means a large amount of nitrogen oxides, and nitrogen oxides is one of the main air pollutants, and it is also the main cause of acid rain, photochemical smog, high ground ozone concentration and greenhouse effect, which seriously damages the human health and living environment. Therefore, active research and development of flue gas denitrification technology has important environmental, economic and social benefits. [0003] At present, the removal of nitrogen oxides in the flue gas is usually achieved by using a denitration equipment line. As far as the current denitration equipment line is concerned, it mainly includes an ammonia injection device and a denitration tower connected to the...

Claims

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Application Information

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IPC IPC(8): B01B1/00B01D1/00B01D53/86B01D53/90
CPCB01B1/005B01D1/00B01D53/8631B01D53/90B01D2251/2062B01D2258/0283
Inventor 麻强王维江王怀金李立松荀鹏王平余永红汪波
Owner CHENGDU GUOHUA ENVIRONMENTAL TECH
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