Ammonia recovering process for liquid ammonia collator

A technology of liquid ammonia finishing and machine matching ammonia, which is applied to textiles and papermaking, fabric surface trimming, etc., and can solve problems such as huge equipment, large investment, and complicated process flow

Inactive Publication Date: 2004-10-20
陈兆祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The equipment is huge, the process is complicated, and the investment is large

Method used

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  • Ammonia recovering process for liquid ammonia collator
  • Ammonia recovering process for liquid ammonia collator
  • Ammonia recovering process for liquid ammonia collator

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings:

[0016] like figure 1 Shown: The mixed gas with ammonia, air and water vapor escaped from the reaction chamber and the steaming chamber of the liquid ammonia finishing machine respectively, the former is the reaction gas, and the latter is the steam.

[0017] Ammonia process: The reaction gas is absorbed by the reaction gas low pressure absorption and separation system, and the ammonia gas is absorbed to make a certain concentration of ammonia water. The ammonia water goes to the low pressure rectification system for rectification to obtain high concentration ammonia gas. The ammonia gas is dewatered by the low temperature water removal system and then compressed and condensed into the liquid ammonia. The liquid ammonia is sent back to the finishing machine for recycling.

[0018] The steam and steam are cooled and absorbed by the steam-vapor low-pressure absorption a...

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Abstract

The present invention provides one simplified ammonia recovering process for liquid ammonia collator. The technological process features that ammonia vapor enters the low-pressure separation system, the reactant gas enters the low-pressure absorbing and separating system, and separated ammonia water enters the low-pressure rectification system, the low-temperature dewatering system and compressing condensation system.

Description

technical field [0001] The invention belongs to the technical field of finishing after printing and dyeing, in particular to an ammonia recovery process matched with a liquid ammonia finishing machine. Background technique [0002] Liquid ammonia finishing natural fiber textiles (cotton, hemp) is a new fabric post-processing technology developed internationally in modern times. It can change the structure of natural fibers, improve the taste of textiles, and greatly increase their added value. The ammonia recovery device is an important part of the finishing machine. It absorbs and separates the mixed gas of ammonia, air and water vapor escaped from the finishing machine, and finally returns it to the finishing machine as liquid ammonia for use. [0003] There are only two sets of liquid ammonia finishing machine and its matching ammonia recovery device in China. One set is in Shanghai No. 2 Printing and Dyeing Factory. Its ammonia recovery adopts high pressure method, whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06C29/00
Inventor 陈兆祥谭鸿秀
Owner 陈兆祥
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