Abating environmentally harmful waste gases

S. Sridhar, Du Sichen, U. B. Pal, S. Seetharaman

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


A gas-purification method, based on the condensation of nitrogen, sulfur, and carbon-containing environmentally hazardous gases produced from industrial processes, is proposed in this article. The method, which utilizes the cooling capacity of waste nitrogen in the oxygen plant to condense the hazardous gases, is capable of removing hazardous impurities up to 99.98%. Theoretical calculations underlying the condensation process are presented employing gases produced in a blast furnace and coke oven in an integrated steel plant. The cooling power required for the condensation process is calculated using the waste nitrogen generated from an oxygen plant that generates captive oxygen for the steel plant. Design modifications that need to be made to the oxygen plant in order to utilize the cooling power of the waste nitrogen gas are also presented. As a case study, the advantages of the method are illustrated with purification of coke-oven gas. The economic impact and the investment aspects are also discussed.

Original languageEnglish (US)
Pages (from-to)30-32
Number of pages3
Issue number5
StatePublished - May 2002
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)


Dive into the research topics of 'Abating environmentally harmful waste gases'. Together they form a unique fingerprint.

Cite this