The Characteristics of Sour Gas Decomposition by Microwave

Microwave에 의한 산성가스 분해 특성

  • Received : 1995.10.21
  • Accepted : 1996.10.18
  • Published : 1996.12.10

Abstract

Under the Irradiation of the radiofrequency wave, the dipole materials vibrate as microwavic phase change. This causes friction between adjacent molecules and enables an unique charateristics of interior heating of the materials. When dipole gases are adsorbed inside of a solid radiofrequency wave absorber, the gases can be decomposed easily by the microwave energy. The decomposition of sour gases was successfully tested in this manner to develop a sour gas removal process from the combustion flue gas. The standard gas bearing NO and $SO_2$ was passed through and microwave was applied on the calcined char bed as the wave absorber and the gas adsorbent. It was found that more then 95% of NO and 70 % of $SO_2$ was decomposed to the environmentally clean elements during the passage through the 20 gram char bed under the microwave impingement. The surface area and the porosity of char increased because the oxygen radicals produced from decomposed gas attacked carbon in the char capillaries and formed $CO_2$. For a lower concentration of sour gas, general cases in the commercial combustion processes, almost complete decomposion is believed possible and this method is surely expected to be useful for the prevention of air pollutions.

Keywords

References

  1. Prog. Energy Combust. Sci. v.20 Nitrous Oxide Behavior in the Atmosphere, and in Combustion and Industrial Systems John C. Kramlich;William P. Linak
  2. 배가스로부터 $SO_x$$NO_x$의 동시 제거를 위한 고효율 공정기술개발 과학기술처
  3. Microwave Engineering and Applications Om P. Gandhi
  4. Res. Chem. Intermed. v.20 no.1 Microwave Induced Reaction of SO₂and $NO_x$ Decomposition in the Char-bed C. Y. Cha
  5. Carbon v.29 W. F. DeGroot;T. H. Osterheld;G. N. Richards
  6. Production of Activated Carbon from Coal Chars Using Microwave Energy Loren M. Norman;C. Y. Cha
  7. 저온 폐가스 청정 열회수 이용기술 개발에 관한 중간보고서 상공자원부
  8. 에너지저널 v.78 배연탈황기술의 현황분석 김성현(외)
  9. Presentation at the Joint Symposium of American Chemical Society and Society of Automotive Engineering Elelectromagnetic Technique for SO₂and $NO_x$ Removal from Coal Combuster Product Gas C. Y. Cha
  10. 石炭利用技術 マニュアル 環境技術硏究會
  11. Carbon Microwave Induced Regeneration of $NO_x$ Saturated Char Yougen Kong;Chang Yul Cha