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Title: Mild temperature gasification: Partitioning sulfur to gas as H{sub 2}S. Interim final technical report, 1 September, 1992--31 August, 1993

Abstract

Bench-scale, mild-temperature fluidized bed gasification (MTFBG) was performed on three high sulfur Illinois basin coals after mixing with phosphoric acid. The research initiated development of an advanced processing technology which partitions coal sulfur to the gas phase as H{sub 2}S. The MTFBG experiments were performed on Illinois coals IBC-101, IBC-106 and IBC-110. Product yields were between 60--85% char, 0.4--1.3% tar and 15--43% gases. Gas yields were sensitive to the coal/acid mixing ratios and the residence time of the coal within the gasifier. Tar and gas yields were significantly lower for coal/acid feeds than for coal-only feeds. At 500 C, the sulfur removal was as high as 82% for IBC-106; sulfur emissions during combustion of this char would be 1.10 lbs SO{sub 2}/MMBtu. Emissions levels from the IBC-110 char would be 1.15 lbs SO{sub 2}/MMBtu whereas it would be 2.15 lb SO{sub 2}/MMBtu from the IBC-101 char. In comparison, the emission levels from chars produced during gasification of coal using no acid would be 4.35 (IBC-110) and 4.81 (IBC-101), whereas the emission levels of the parent coals would be between 5--6 lb SO{sub 2}/MMBtu. Gas product analysis confirmed that the coal sulfur was removed as H{sub 2}S. Pressurized hot-water filtration ofmore » the chars removed nearly 80% of the phosphorus. Its removal rate should be near 95% to restrain the reagent cost to less than $25/Ton of SO{sub 2}.« less

Authors:
; ; ;  [1]
  1. Univ. of Kentucky, Lexington, KY (United States)
Publication Date:
Research Org.:
Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10132269
Report Number(s):
DOE/PC/92521-T84
ON: DE94008026; BR: AV0100000/AV0102000; TRN: AHC29406%%26
DOE Contract Number:  
FC22-92PC92521
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: [1993]
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL GASIFICATION; CHEMICAL REACTION KINETICS; CHARS; SULFUR CONTENT; PHOSPHORIC ACID; CATALYTIC EFFECTS; PROGRESS REPORT; BITUMINOUS COAL; CHEMICAL REACTION YIELD; HYDROGEN SULFIDES; SULFUR DIOXIDE; DESULFURIZATION; EXPERIMENTAL DATA; 010404; GASIFICATION

Citation Formats

Stencel, J M, Neathery, J K, Schaefer, J L, and Yang, Jidong. Mild temperature gasification: Partitioning sulfur to gas as H{sub 2}S. Interim final technical report, 1 September, 1992--31 August, 1993. United States: N. p., 1993. Web. doi:10.2172/10132269.
Stencel, J M, Neathery, J K, Schaefer, J L, & Yang, Jidong. Mild temperature gasification: Partitioning sulfur to gas as H{sub 2}S. Interim final technical report, 1 September, 1992--31 August, 1993. United States. https://doi.org/10.2172/10132269
Stencel, J M, Neathery, J K, Schaefer, J L, and Yang, Jidong. 1993. "Mild temperature gasification: Partitioning sulfur to gas as H{sub 2}S. Interim final technical report, 1 September, 1992--31 August, 1993". United States. https://doi.org/10.2172/10132269. https://www.osti.gov/servlets/purl/10132269.
@article{osti_10132269,
title = {Mild temperature gasification: Partitioning sulfur to gas as H{sub 2}S. Interim final technical report, 1 September, 1992--31 August, 1993},
author = {Stencel, J M and Neathery, J K and Schaefer, J L and Yang, Jidong},
abstractNote = {Bench-scale, mild-temperature fluidized bed gasification (MTFBG) was performed on three high sulfur Illinois basin coals after mixing with phosphoric acid. The research initiated development of an advanced processing technology which partitions coal sulfur to the gas phase as H{sub 2}S. The MTFBG experiments were performed on Illinois coals IBC-101, IBC-106 and IBC-110. Product yields were between 60--85% char, 0.4--1.3% tar and 15--43% gases. Gas yields were sensitive to the coal/acid mixing ratios and the residence time of the coal within the gasifier. Tar and gas yields were significantly lower for coal/acid feeds than for coal-only feeds. At 500 C, the sulfur removal was as high as 82% for IBC-106; sulfur emissions during combustion of this char would be 1.10 lbs SO{sub 2}/MMBtu. Emissions levels from the IBC-110 char would be 1.15 lbs SO{sub 2}/MMBtu whereas it would be 2.15 lb SO{sub 2}/MMBtu from the IBC-101 char. In comparison, the emission levels from chars produced during gasification of coal using no acid would be 4.35 (IBC-110) and 4.81 (IBC-101), whereas the emission levels of the parent coals would be between 5--6 lb SO{sub 2}/MMBtu. Gas product analysis confirmed that the coal sulfur was removed as H{sub 2}S. Pressurized hot-water filtration of the chars removed nearly 80% of the phosphorus. Its removal rate should be near 95% to restrain the reagent cost to less than $25/Ton of SO{sub 2}.},
doi = {10.2172/10132269},
url = {https://www.osti.gov/biblio/10132269}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Dec 31 00:00:00 EST 1993},
month = {Fri Dec 31 00:00:00 EST 1993}
}