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Ammonia gas (ammonium sulfate crystallization) treatment technology system

A technology of crystallization treatment and ammonium sulfate, which is applied in the fields of ammonia compounds, inorganic chemistry, and separation of dispersed particles, and can solve the problem of secondary pollution of ammonia gas

Inactive Publication Date: 2013-03-27
杨友发 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the above-mentioned secondary pollution problem of ammonia gas treatment, I have studied ammonia gas treatment in the LED industry for many years, and have in-depth research on ammonia waste gas treatment and various treatment process equipment

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  • Ammonia gas (ammonium sulfate crystallization) treatment technology system

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Embodiment Construction

[0022] As shown in the process flow in the attached figure, the system process is simple and practical, the operation is convenient and simple, the equipment is easy to manufacture without special professional requirements, and the system has a good treatment effect; compared with other treatment process equipment, the investment is less, and the ammonia gas treatment is clean and has no secondary pollution. The main equipment and main functions of the system are described as follows:

[0023] Equipment numbers and functions in the attached drawings:

[0024] 1. 001 in the figure is the system reaction tower, the main function is the reaction device for ammonia gas and sulfuric acid solution, which is the core equipment of this system.

[0025] 2. 002 in the picture is a water washing tower, whose main function is to ensure that the gas is discharged up to standard after being washed and absorbed by water.

[0026] 3. 003 in the picture is a fan, the main function is to extra...

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Abstract

The invention discloses an ammonia gas crystallization treatment technology, and belongs to the technical field of environmental protection and the chemical engineering. The technology thoroughly solves a problem of secondary pollution generated by ammonia gas discharge treatment in the production process in the LED industry at home and abroad. The main equipment of the ammonia gas crystallization treatment technology (system) comprises a reaction tower, a water washing tower, a fan, a reaction crystallization liquid storage tank, a cooling crystallization liquid storage tank, an ammonium sulfate solution recovery and storage tank, a water washing water storage tank, a dehydration device, a reaction tower circulating pump, an ammonium sulfate water circulating pump, a water washing tower circulating pump, a sulfuric acid storage tank, a metering pump and a system control cabinet. The technology has the following advantage: an ammonia gas enters the system reaction tower and fully contacts with a sulfuric acid solution, the ammonia gas and the sulfuric acid solution undergo a crystallization reaction, the obtained ammonium sulfate solution and crystals enters a cooling crystallization device, and the gas enters the water washing tower and undergoes water washing and absorbing treatment, so the zero discharge of the ammonia gas and the zero discharge of ammonia-nitrogen wastewater are guaranteed. No generation of three wastes is reached in the whole ammonia gas treatment process, so the technology makes a significant contribution to the ammonia gas treatment in the LED industry at home and abroad.

Description

technical field [0001] The invention belongs to the field of environmental protection and chemical technology. The ammonia gas treatment technology (ammonia gas treatment system) is an ammonia gas treatment technology (ammonia gas treatment system) that reacts with sulfuric acid to produce ammonium sulfate crystals. It will fill the domestic and foreign LED industry ammonia waste gas treatment to achieve zero discharge of ammonia gas and ammonia nitrogen wastewater. Zero discharge blank. Background technique [0002] At present, the LED industry at home and abroad must use high-purity ammonia in the production process of epitaxial wafers. Ammonia is one of the main raw material gases in the LED epitaxial growth process. During the production process of the LED epitaxy process, about 90% of the ammonia gas does not participate in the process reaction and is directly discharged from the LED epitaxy process equipment. If the ammonia gas is directly discharged into the air, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/18C01C1/242
Inventor 杨友发李义娟
Owner 杨友发
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