Emission control of NO and SO2 for the high-temperature and low O2 concentration combustion of coke by urea and NH 4HCO3

Hocheol Song; Seokheung Chang; Kwinam Park; Ho Chul Shin; Jin Won Park; Eung Soo Choi; Wan Wook Huh

doi:10.1061/(ASCE)0733-9372(2005)131:2(190)

Emission control of NO and SO₂ for the high-temperature and low O₂ concentration combustion of coke by urea and NH ₄HCO₃

Hocheol Song, Seokheung Chang, Kwinam Park, Ho Chul Shin, Jin Won Park, Eung Soo Choi, Wan Wook Huh

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

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 NH ₄HCO₃ content from 10 to 50 wt%. However, they showed good desulfurization effect on the emission of SO ₂ at all combustion temperatures and their effects showed remarkable results even at 1500°C. Only 10 wt% of urea or NH ₄HCO₃ could control the emission of SO ₂ 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.

Original language	English
Pages (from-to)	190-195
Number of pages	6
Journal	Journal of Environmental Engineering
Volume	131
Issue number	2
DOIs	https://doi.org/10.1061/(ASCE)0733-9372(2005)131:2(190)
Publication status	Published - 2005 Feb

All Science Journal Classification (ASJC) codes

Environmental Engineering
Civil and Structural Engineering
Environmental Chemistry
Environmental Science(all)

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10.1061/(ASCE)0733-9372(2005)131:2(190)

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title = "Emission control of NO and SO2 for the high-temperature and low O2 concentration combustion of coke by urea and NH 4HCO3",

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 NH 4HCO3 content from 10 to 50 wt%. However, they showed good desulfurization effect on the emission of SO 2 at all combustion temperatures and their effects showed remarkable results even at 1500°C. Only 10 wt% of urea or NH 4HCO3 could control the emission of SO 2 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.",

author = "Hocheol Song and Seokheung Chang and Kwinam Park and Shin, {Ho Chul} and Park, {Jin Won} and Choi, {Eung Soo} and Huh, {Wan Wook}",

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doi = "10.1061/(ASCE)0733-9372(2005)131:2(190)",

language = "English",

volume = "131",

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journal = "Journal of Environmental Engineering",

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publisher = "American Society of Civil Engineers (ASCE)",

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T1 - Emission control of NO and SO2 for the high-temperature and low O2 concentration combustion of coke by urea and NH 4HCO3

AU - Song, Hocheol

AU - Chang, Seokheung

AU - Park, Kwinam

AU - Shin, Ho Chul

AU - Park, Jin Won

AU - Choi, Eung Soo

AU - Huh, Wan Wook

PY - 2005/2

Y1 - 2005/2

N2 - 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 NH 4HCO3 content from 10 to 50 wt%. However, they showed good desulfurization effect on the emission of SO 2 at all combustion temperatures and their effects showed remarkable results even at 1500°C. Only 10 wt% of urea or NH 4HCO3 could control the emission of SO 2 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.

AB - 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 NH 4HCO3 content from 10 to 50 wt%. However, they showed good desulfurization effect on the emission of SO 2 at all combustion temperatures and their effects showed remarkable results even at 1500°C. Only 10 wt% of urea or NH 4HCO3 could control the emission of SO 2 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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Emission control of NO and SO₂ for the high-temperature and low O₂ concentration combustion of coke by urea and NH ₄HCO₃

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