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Process for removing mercury from a gas

  • US 4,196,173 A
  • Filed: 09/29/1978
  • Issued: 04/01/1980
  • Est. Priority Date: 09/29/1977
  • Status: Expired due to Term
First Claim
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1. In a process for removing mercury gases containing mercury vapor which comprises contacting these gases with activated carbon on which a halogen is adsorbed, the improvement which comprises flowing a gas to be freed from mercury vapor continuously through a bed of activated carbon having a maximum thickness of 5 cm and having chlorine adsorbed thereon, and maintaining the chlorine content of the activated carbon in the range of from 5 to 12% by weight based on the weight of the carbon during the passage of the gas through the activated carbon bed by continuously or periodically supplying the bed with a replenishing amount of chlorine.

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