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Title: Enhanced durability for high-temperature desulfurization sorbents for moving-bed applications -- Option 3 program: Development and testing of additional zinc titanate sorbents. Final report, September 1992--May 1996

Abstract

GE is developing a moving-bed, high-temperature desulfurization system for the integrated gasification combined-cycle (IGCC) power cycle in which zinc-based regenerable sorbents are currently being used as desulfurization sorbents. Zinc titanate and other zinc-based oxides are being considered as sorbents for use in the Clean Coal Technology Demonstration Program at Tampa Electric Co.`s Polk Power Station. A key to success in the development of high-temperature desulfurization systems is the matching of sorbent properties for the selected process operating conditions, namely, sustainable desulfurization kinetics, high sulfur capacity, and mechanical durability over multiple cycles. Additionally, the sulfur species produced during regeneration of the sorbent must be in a form compatible with sulfur recovery systems, such as sulfuric acid or elemental sulfur processes. The objective of this contract is to identify and test sorbent fabrication methods and chemical compositions that enhance the long-term chemical reactivity and mechanical strength of zinc titanate and other novel sorbents for moving-bed, high-temperature desulfurization of coal-derived gases. A parametric study on the use of calcium sulfate additives to zinc titanate was conducted for zinc titanates having a 2:1 and 1.5:1 zinc-to-titanium molar ratio, and they showed a beneficial effect on crush strength of fresh 2:1 zinc titanate sorbents. Inmore » addition, a test procedure was developed to screen sorbent formulations based on resistance to spalling and pellet breakage induced by zinc sulfate formation in the presence of sulfur dioxide and excess oxygen conditions.« less

Authors:
;
Publication Date:
Research Org.:
General Electric Co., Schenectady, NY (United States). Corporate Research and Development Dept.
Sponsoring Org.:
USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
OSTI Identifier:
587947
Report Number(s):
DOE/MC/25003-5762
ON: DE97005463; TRN: AHC29809%%47
DOE Contract Number:  
AC21-88MC25003
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: [1996]
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; HOT GAS CLEANUP; ADSORBENTS; PROGRESS REPORT; COMBINED-CYCLE POWER PLANTS; COAL GASIFICATION; ZINC OXIDES; TITANIUM OXIDES; DESULFURIZATION; FUEL GAS; ACTIVATION ENERGY; MECHANICAL PROPERTIES; EXPERIMENTAL DATA

Citation Formats

Ayala, R E, and Chuck, T L. Enhanced durability for high-temperature desulfurization sorbents for moving-bed applications -- Option 3 program: Development and testing of additional zinc titanate sorbents. Final report, September 1992--May 1996. United States: N. p., 1996. Web. doi:10.2172/587947.
Ayala, R E, & Chuck, T L. Enhanced durability for high-temperature desulfurization sorbents for moving-bed applications -- Option 3 program: Development and testing of additional zinc titanate sorbents. Final report, September 1992--May 1996. United States. https://doi.org/10.2172/587947
Ayala, R E, and Chuck, T L. 1996. "Enhanced durability for high-temperature desulfurization sorbents for moving-bed applications -- Option 3 program: Development and testing of additional zinc titanate sorbents. Final report, September 1992--May 1996". United States. https://doi.org/10.2172/587947. https://www.osti.gov/servlets/purl/587947.
@article{osti_587947,
title = {Enhanced durability for high-temperature desulfurization sorbents for moving-bed applications -- Option 3 program: Development and testing of additional zinc titanate sorbents. Final report, September 1992--May 1996},
author = {Ayala, R E and Chuck, T L},
abstractNote = {GE is developing a moving-bed, high-temperature desulfurization system for the integrated gasification combined-cycle (IGCC) power cycle in which zinc-based regenerable sorbents are currently being used as desulfurization sorbents. Zinc titanate and other zinc-based oxides are being considered as sorbents for use in the Clean Coal Technology Demonstration Program at Tampa Electric Co.`s Polk Power Station. A key to success in the development of high-temperature desulfurization systems is the matching of sorbent properties for the selected process operating conditions, namely, sustainable desulfurization kinetics, high sulfur capacity, and mechanical durability over multiple cycles. Additionally, the sulfur species produced during regeneration of the sorbent must be in a form compatible with sulfur recovery systems, such as sulfuric acid or elemental sulfur processes. The objective of this contract is to identify and test sorbent fabrication methods and chemical compositions that enhance the long-term chemical reactivity and mechanical strength of zinc titanate and other novel sorbents for moving-bed, high-temperature desulfurization of coal-derived gases. A parametric study on the use of calcium sulfate additives to zinc titanate was conducted for zinc titanates having a 2:1 and 1.5:1 zinc-to-titanium molar ratio, and they showed a beneficial effect on crush strength of fresh 2:1 zinc titanate sorbents. In addition, a test procedure was developed to screen sorbent formulations based on resistance to spalling and pellet breakage induced by zinc sulfate formation in the presence of sulfur dioxide and excess oxygen conditions.},
doi = {10.2172/587947},
url = {https://www.osti.gov/biblio/587947}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 31 00:00:00 EST 1996},
month = {Tue Dec 31 00:00:00 EST 1996}
}