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Synthetic ammonia waste gas recovering and utilizing device and recovering and utilizing method thereof

A technology for waste gas recovery and ammonia synthesis, applied in the preparation/separation of ammonia, etc., can solve problems such as lung infection, human health hazards, respiratory failure, etc., and achieve the effects of creating economic benefits, reasonable design and simple structure

Active Publication Date: 2015-12-23
HENAN XINLIANXIN FERTILIZER +2
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

In addition, ammonia is harmful to human health, and severe cases can cause lung infection and respiratory failure leading to death

Method used

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  • Synthetic ammonia waste gas recovering and utilizing device and recovering and utilizing method thereof

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Embodiment 1

[0035] A recycling method for a synthetic ammonia waste gas recycling device, comprising the steps of:

[0036] Step 1: The pressure of the exhaust gas in the ammonia tank exhaust gas pipeline 1 is 2.5MPa, the ammonia content is 17%, the pressure is 2.5MPa after being adjusted by the pressure regulating valve 29, and the flow rate is 5000Nm 3 / h, then enter the first ammonia purification tower 3 and the low-concentration ammonia water in the liquid inlet of the first ammonia purification tower 3 reversely absorbs ammonia, and the waste gas enters the second ammonia purification tower 4 through the pipeline, and the ammonia content in the waste gas decreases to 2.5%;

[0037] Step 2: Make the waste gas entering the second ammonia purification tower 4 described in step 1 and the low-concentration ammonia water at the liquid inlet in the middle of the second ammonia purification tower 4 reversely absorb ammonia, and the ammonia content is 1% after the exhaust gas enters the first...

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Abstract

The invention discloses a synthetic ammonia waste gas recovering and utilizing device and a recovering and utilizing method thereof. The device comprises an ammonia tank purge gas pipeline and a synthetic exhausted gas inlet pipeline; the ammonia tank purge gas pipeline is connected to a membrane separation device through a first ammonia purifying tower, a second ammonia purifying tower, a first T joint, and an ammonia washing tower; the top of the membrane separation device is connected to a synthetic ammonia system through a hydrogen gas pipeline, and the bottom of the membrane separation device is connected to a LNG storage device through a pipeline. The provided device has the advantages of simple structure and reasonable design, the energy conversion of high pressure gas can be achieved by an expanding machine, and the goals of no pollution and zero discharge can be realized.

Description

technical field [0001] The invention belongs to the technical field of synthetic ammonia waste gas treatment, and in particular relates to a synthetic ammonia waste gas recycling device and a recycling method thereof. Background technique [0002] Ammonia is one of the typical toxic and harmful industrial gaseous pollutants. A large amount of ammonia-containing industrial tail gas is directly discharged into the atmosphere, which not only causes the loss of synthetic ammonia products, but also deteriorates people's living environment. Ammonia is oxidized in the atmosphere to produce NOx, forming acid rain, and then oxidized to nitrate, which enters the water circulation system and pollutes groundwater. In addition, ammonia can cause harm to human health, and severe cases can cause lung infection and respiratory failure leading to death. [0003] Ammonia pollution mainly comes from the release gas and vent air from synthetic ammonia production and high-altitude exhaust exhau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01C1/12
Inventor 顾朝晖徐严伟宋仁委吴培樊安静杨国洞王亚乐杨安成
Owner HENAN XINLIANXIN FERTILIZER
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