Method for producing chlorine from hydrogen chloride and oxygen

Method for producing chlorine from hydrogen chloride and oxygen

  • CN 101,448,732 A
  • Filed: 05/10/2007
  • Published: 06/03/2009
  • Est. Priority Date: 05/18/2006
  • Status: Active Application
First Claim
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1. method of producing chlorine by following multistage oxidation:

  • A) use catalyzer that hydrogenchloride is reacted with the oxygen thermal response or by the non-thermal activation of hydrogenchloride and oxygen,The gaseous mixture that forms in wherein reacting a), it is made up of target product chlorine G﹠

    W, unreacted hydrogen chloride and oxygen and other submember especially carbonic acid gas and nitrogen,B) be cooled make the salt acid condensation andC) from gaseous mixture, isolate the aqueous solution (hydrochloric acid) of the hydrogenchloride of formation, the method is characterized in thatD) isolated hydrochloric acid to small part is transported to electrochemical oxidation, wherein is oxidized to chlorine to the small part aqueous hydrochloric acid,E) chlorine that produces in the step d) is randomly joined in the gaseous mixture that produces in the step c),F) remove step c) and e) gaseous mixture in the residual water that exists, especially by using sulfuric acid scrubbing,G) the gaseous mixture oxygen-free gas of the rich chlorine of Xing Chenging and randomly do not contain submember.

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