Method and system for preparing high-purity hydrogen chloride

一种氯化氢、高纯度的技术，应用在氯/氯化氢、氯化氢制备、有机化学方法等方向，能够解决难操作等问题，达到能量消耗降低的效果

Inactive Publication Date: 2013-07-24
HONG IN CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Specifically, water and the oxygen converted to water during hydrogen chloride synthesis make it difficult to operate equipment such as compressors

Method used

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  • Method and system for preparing high-purity hydrogen chloride
  • Method and system for preparing high-purity hydrogen chloride
  • Method and system for preparing high-purity hydrogen chloride

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Embodiment

[0044] In an embodiment of the present invention, a system for producing high-purity hydrogen chloride is used, comprising: a reactor 10 for reacting purified high-purity hydrogen with purified high-purity chlorine; A compressor 20 for hydrogen chloride gas; a cooler 21 for hydrogen chloride passing through the compressor; a hydrochloric acid storage tank 60 for dissolving hydrogen chloride passing through the compressor in deionized water to prepare high-purity hydrochloric acid and storing the prepared hydrochloric acid ; a two-stage distillation column (ie, a first distillation column 40 and a second distillation column 50 ) for fractionating hydrogen chloride liquefied in a compressor to remove unreacted hydrogen and the like; and for storage in the distillation column Hydrogen chloride storage tank 30 for purified hydrogen chloride. Using this hydrogen chloride production system, hydrogen chloride is produced. Specifically, hydrogen and chlorine are respectively about 80...

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Abstract

The present invention provides a method and system for preparing high-purity hydrogen chloride, the method comprising the steps of: purifying the raw materials, crude hydrogen and crude chlorine, to a purity of at least 99.999%; synthesizing hydrogen chloride by reacting the purified hydrogen and chlorine at a temperature in the range of from 1,200 to 1,400 DEG C, the hydrogen being introduced in excess by a molar ratio relative to the chlorine; compressing the hydrogen chloride so as to convert same to a liquid; and refining the hydrogen chloride and isolating the surplus hydrogen through fractional distillation. The method and system for preparing high-purity hydrogen chloride of the present invention can readily produce hydrogen chloride of from 3N (99.9%) to 6N (99.9999%) in large quantities and at relatively low cost depending on the raw materials and the degree of purity of the product, and can provide an environmentally friendly preparation process that dramatically decreases energy consumption.

Description

technical field [0001] The present invention generally relates to a method and system for producing high-purity hydrogen chloride, and more particularly, to a method and system for producing high-purity hydrogen chloride, wherein high-purity hydrogen chloride with a purity of 3N (99.9%) to 6N (99.9999%) Can be produced using a simpler method using low energy by reacting purified hydrogen with purified chloride at high temperatures of about 1,200°C to 1,400°C to synthesize hydrogen chloride, converting the hydrogen chloride to a liquid state, and purifying the liquid state hydrogen chloride. Background technique [0002] Anhydrous hydrogen chloride (HCl), also known as anhydrous hydrochloric acid, is a compound with a molecular weight of 36.47 that exists in a gaseous state at room temperature and atmospheric pressure and liquefies at atmospheric pressure and -85°C. Hydrogen chloride is used in the manufacture of various chemicals, including medical drugs and dye intermediat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B7/07B01D15/08B01D3/14C07B63/00
CPCB01D53/261C01B7/07B01D3/14C01B7/012C01B7/0712C07B63/00C01P2006/80C01B7/0743
Inventor 李载健李范龙
Owner HONG IN CHEM
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