TECHNICAL PAPERS
Feb 1, 2005

Emission Control of NO and SO2 for the High-Temperature and Low O2 Concentration Combustion of Coke by Urea and NH4HCO3

Publication: Journal of Environmental Engineering
Volume 131, Issue 2

Abstract

Urea and NH4HCO3 were used to control the emission of NO and SO2 from the combustion of coke at high-temperature and low oxygen concentration. Urea and NH4HCO3 could control NO emission only under 1100°C . Their effects disappeared above 1100°C even though the increase of urea and NH4HCO3 content from 10to50wt% . However, they showed good desulfurization effect on the emission of SO2 at all combustion temperatures and their effects showed remarkable results even at 1500°C . Only 10wt% of urea or NH4HCO3 could control the emission of SO2 effectively at 1400 and 1500°C . This effect was caused by ∙NH and NH2 from the thermal decomposition of reducing agents at high temperature. Low O2 concentration showed little effect on the removal of SO2 . Ammonia slip from the thermal decomposition of reducing chemical was not a considerable level.

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Published In

Go to Journal of Environmental Engineering
Journal of Environmental Engineering
Volume 131Issue 2February 2005
Pages: 190 - 195

History

Received: Dec 7, 2001
Accepted: Feb 18, 2004
Published online: Feb 1, 2005
Published in print: Feb 2005

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Authors

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Hocheol Song
Postdoctoral Faculty Member, Dept. of Chemical Engineering, Yonsei Univ., Shinchon-dong 134, Seodaemoon-gu, Seoul, 120-749, Republic of Korea.
Seokheung Chang
PhD Candidate, Dept. of Chemical Engineering, Yonsei Univ., Shinchon-dong, 134, Seodaemoon-gu, Seoul, 120-749, Republic of Korea.
Kwinam Park
Postdoctoral Faculty Member, Dept. of Chemical Engineering, Yonsei Univ., Shinchon-dong 134, Seodaemoon-gu, Seoul, 120-749, Republic of Korea.
Ho-chul Shin
Postdoctoral Faculty Member, Dept. of Chemical Engineering, Yonsei Univ., Shinchon-dong 134, Seodaemoon-gu, Seoul, 120-749, Republic of Korea.
Jin-won Park [email protected]
Professor, Dept. of Chemical Engineering, Yonsei Univ., Shinchon-dong 134, Seodaemoon-gu, Seoul, 120-749, Republic of Korea (corresponding author). E-mail: [email protected]
Eung-soo Choi
Researcher, Iron and Steel Research Team, Technical Research Laboratories, POSCO, Pohang P.O. Box 36, Koedong-dong 1, Nam-ku, Pohang, Kyungbuk, 790-785, Republic of Korea.
Wan-wook Huh
Head Researcher, Iron and Steel Research Team, Technical Research Laboratories, POSCO, Pohang P.O. Box 36, Koedong-dong 1, Nam-ku, Pohang, Kyungbuk, 790-785, Republic of Korea.

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