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Title: Copper-based sorbents for coal gas desulfurization at moderate temperatures

Abstract

In a previous paper, the authors reported on the development of a regenerable copper chromite sorbent, designated as CuCr-29, that is capable of achieving less than 5 ppmv H{sub 2}S concentration in the cleaned fuel gas at about 600 C. This paper reports on recent research carried out to develop a new class of copper-based sorbents for hot fuel gas desulfurization applications in the moderate temperature range of 350--550 C that is currently of industrial interest. A reproducible sorbent preparation technique has been extended to the formulation of highly reactive and attrition-resistant sulfur sorbents based on reagent-grade oxides of copper, manganese, and alumina. The results of packed-bed experiments carried out for the evaluation of the performance of several copper-based sorbents at 350 and 450 C as well as the assessment of the long-term durability and regenerability of one selected formulation are presented and discussed. Three copper-based sorbents were shown to exhibit excellent sulfur removal efficiency and effective capacity, with one formulation (IGTSS-145) being particularly effective in the range of 450--600 C and two formulations (IGTSS-179 and IGTSS-326A) for the range of 350--450 C. The IGTSS-326A formulation maintained excellent sulfur removal efficiency (<1 ppmv H{sub 2}S in the cleaned fuel gas)more » as well as excellent effective sulfur capacity throughout extended durability testing. This sorbent was also shown to have significantly high attrition resistance, as determined in accordance with the ASTM D5757-95 procedure. These results strongly suggest the suitability of this formulation as a candidate sorbent for demonstration in the Sierra Pacific (Pinon Pine) Clean Coal Technology IGCC Demonstration Program.« less

Authors:
;
Publication Date:
Research Org.:
Inst. of Gas Technology, Des Plaines, IL (US)
OSTI Identifier:
20076076
Resource Type:
Journal Article
Journal Name:
Industrial and Engineering Chemistry Research
Additional Journal Information:
Journal Volume: 39; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0888-5885
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; FUEL GAS; COAL GASIFICATION; DESULFURIZATION; HOT GAS CLEANUP; COPPER COMPOUNDS; ADSORBENTS; HYDROGEN SULFIDES; REMOVAL; WEAR RESISTANCE; PERFORMANCE

Citation Formats

Slimane, R.B., and Abbasian, J. Copper-based sorbents for coal gas desulfurization at moderate temperatures. United States: N. p., 2000. Web. doi:10.1021/ie990877a.
Slimane, R.B., & Abbasian, J. Copper-based sorbents for coal gas desulfurization at moderate temperatures. United States. doi:10.1021/ie990877a.
Slimane, R.B., and Abbasian, J. Mon . "Copper-based sorbents for coal gas desulfurization at moderate temperatures". United States. doi:10.1021/ie990877a.
@article{osti_20076076,
title = {Copper-based sorbents for coal gas desulfurization at moderate temperatures},
author = {Slimane, R.B. and Abbasian, J.},
abstractNote = {In a previous paper, the authors reported on the development of a regenerable copper chromite sorbent, designated as CuCr-29, that is capable of achieving less than 5 ppmv H{sub 2}S concentration in the cleaned fuel gas at about 600 C. This paper reports on recent research carried out to develop a new class of copper-based sorbents for hot fuel gas desulfurization applications in the moderate temperature range of 350--550 C that is currently of industrial interest. A reproducible sorbent preparation technique has been extended to the formulation of highly reactive and attrition-resistant sulfur sorbents based on reagent-grade oxides of copper, manganese, and alumina. The results of packed-bed experiments carried out for the evaluation of the performance of several copper-based sorbents at 350 and 450 C as well as the assessment of the long-term durability and regenerability of one selected formulation are presented and discussed. Three copper-based sorbents were shown to exhibit excellent sulfur removal efficiency and effective capacity, with one formulation (IGTSS-145) being particularly effective in the range of 450--600 C and two formulations (IGTSS-179 and IGTSS-326A) for the range of 350--450 C. The IGTSS-326A formulation maintained excellent sulfur removal efficiency (<1 ppmv H{sub 2}S in the cleaned fuel gas) as well as excellent effective sulfur capacity throughout extended durability testing. This sorbent was also shown to have significantly high attrition resistance, as determined in accordance with the ASTM D5757-95 procedure. These results strongly suggest the suitability of this formulation as a candidate sorbent for demonstration in the Sierra Pacific (Pinon Pine) Clean Coal Technology IGCC Demonstration Program.},
doi = {10.1021/ie990877a},
journal = {Industrial and Engineering Chemistry Research},
issn = {0888-5885},
number = 5,
volume = 39,
place = {United States},
year = {2000},
month = {5}
}