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Chlorine gas liquefaction technology

A process method and chlorine technology, applied in liquefaction, chlorine/hydrogen chloride, refrigeration and liquefaction, etc., can solve the problems of equipment renewal and maintenance costs, large maintenance workload, low work efficiency, etc. The effect of low operating cost and high operating reliability

Inactive Publication Date: 2004-09-15
JIANGSU SUHUA GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

To do so not only requires a group of pumps to compress in the front, but also requires a huge refrigeration system to support in the back. The service life of each Nessler pump is 3 to 6 months, and the equipment update and maintenance costs are spent in one year. Quite amazing, the maintenance workload is also quite large, the work efficiency is low, and the energy consumption is high

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  • Chlorine gas liquefaction technology
  • Chlorine gas liquefaction technology
  • Chlorine gas liquefaction technology

Examples

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Embodiment

[0033] Example: see attached figure 1 As shown, a factory that produces 95,000 tons of chlorine originally used the low-temperature and low-pressure method to liquefy chlorine gas. It needs to be equipped with 11 first-stage liquid ring pumps with an installed capacity of 1,210 kilowatts and a refrigerator with an assembled capacity of 915 kilowatts. After adopting the new technology of the present invention, two AB1500 high-pressure centrifugal gas compressors of Italy GARO Company are installed, and the total power is only 960 kilowatts. A chlorine gas liquefaction process for each high-pressure centrifugal gas compressor is as follows:

[0034] (1), the chlorine gas is extracted from the electrolytic cell and dried by ordinary drying equipment;

[0035] (2), adopt an AB1500 high-pressure centrifugal gas compressor 6 produced by Italy GARO company, use 98% concentrated sulfuric acid as the working medium to compress the dry chlorine gas to 1.1Mpa in one step, and the temper...

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Abstract

The technological flow is as follows. (1) With concentrated sulfuric acid being as the working medium, the dried chlorine is compressed further to 0.9-1.2 MPa by using the high-pressure centrifugal gas compressor. (2) The segregator separates the mixed fluid of the compressed chlorine and sulfuric acid. The demister removes the hazed sulfuric acid in order to increase the purity. (3) The separated and compressed chlorine is transported to the liquefier where chlorine is condensed in liquid at 30-40 deg.C by use of cooling water. The liquid chlorine is stored in the stock tank. The invention leaves out the voluminous low temperature refrigeration system and the group of the circulation pump for the first level liquid so as to provide the simple technical flow, small investment, high reliability and low energy consumption.

Description

technical field [0001] The invention relates to a liquefaction process of chlorine gas, in particular to a process for industrially producing chlorine gas and converting it into a liquid state by only one step of compression (without freezing) for storage and transportation. Background technique [0002] The industrial production of chlorine mainly adopts the method of electrolysis of salt water. The principle of this method is to use a DC power supply in the electrolytic cell to electrolyze the salt water under a relatively large current, thereby collecting chlorine gas at the anode and hydrogen gas at the cathode, and the liquid remaining in the electrolytic cell can be used to produce caustic soda. Chlorine gas produced by industrial methods is usually directly obtained in a gaseous state, which must be further liquefied into a liquid for the convenience of storage and transportation. There are three known chlorine gas liquefaction processes in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B7/01F25B1/04F25J1/00
Inventor 罗圣君张宝林陈关乾杨培义
Owner JIANGSU SUHUA GRP CO LTD