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Title: Integrated dry NO{sub x}/SO{sub 2} emissions control system calcium-based dry sorbent injection. Test report, April 30--November 2, 1993

Abstract

The DOE sponsored Integrated Dry NO{sub x}SO{sub 2} Emissions Control System program, which is a Clean Coal Technology III demonstration, is being conducted by Public Service Company of Colorado. The test site is Arapahoe Generating Station Unit 4, which is a 100 MWe, down-fired utility boiler burning a low sulfur Western coal. The project goal is to demonstrate up to 70 percent reductions in NO{sub x} and SO{sub 2} emissions through the integration of: (1) down-fired low-NO{sub x} burners with overfire air; (2) Selective Non-Catalytic Reduction (SNCR) for additional NO{sub x} removal; and (3) dry sorbent injection and duct humidification for SO{sub 2} removal. The effectiveness of the integrated system on a high-sulfur coal will also be investigated. This report documents the fifth phase of the test program, where the performance of the dry sorbent injection of calcium was evaluated as an SO{sub 2} removal technique. Dry sorbent injection with humidification was performed downstream of the air heater (in-duct). Calcium injection before the economizer was also investigated. The in-duct calcium sorbent and humidification retrofit resulted in SO{sub 2} reductions of 28 to 40 percent, with a Ca/S of 2, and a 25 to 30{degrees}F approach to adiabatic saturation temperature. Themore » results of the economizer calcium injection tests were disappointing with less than 10 percent SO{sub 2} removal at a Ca/S of 2. Poor sorbent distribution due to limited access into the injection cavity was partially responsible for the low overall removals. However, even in areas of high sorbent concentration (local Ca/S ratios of approximately 6), SO{sub 2} removals were limited to 30 percent. It is suspected that other factors (sorbent properties and limited residence times) also contributed to the poor performance.« less

Authors:
; ;  [1];  [2]
  1. Fossil Energy Research Corp., Laguna Hills, CA (United States)
  2. Public Service Company of Colorado, Denver, CO (United States)
Publication Date:
Research Org.:
Fossil Energy Research Corp., Laguna Hills, CA (United States); Public Service Co. of Colorado, Denver, CO (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10120872
Report Number(s):
DOE/PC/90550-T14
ON: DE95007932; TRN: 95:002190
DOE Contract Number:  
FC22-91PC90550
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Dec 1994
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; 01 COAL, LIGNITE, AND PEAT; SULFUR DIOXIDE; SORPTION; REMOVAL; CALCIUM COMPOUNDS; SORPTIVE PROPERTIES; NITROGEN OXIDES; US CLEAN COAL TECHNOLOGY PROGRAM; DEMONSTRATION PROGRAMS; COAL; SORBENT INJECTION PROCESSES; PROGRESS REPORT; 200202; 010800; NOXIOUS GAS AND PARTICULATE EMISSIONS; WASTE MANAGEMENT

Citation Formats

Shiomoto, G H, Smith, R A, Muzio, L J, and Hunt, T. Integrated dry NO{sub x}/SO{sub 2} emissions control system calcium-based dry sorbent injection. Test report, April 30--November 2, 1993. United States: N. p., 1994. Web. doi:10.2172/10120872.
Shiomoto, G H, Smith, R A, Muzio, L J, & Hunt, T. Integrated dry NO{sub x}/SO{sub 2} emissions control system calcium-based dry sorbent injection. Test report, April 30--November 2, 1993. United States. https://doi.org/10.2172/10120872
Shiomoto, G H, Smith, R A, Muzio, L J, and Hunt, T. 1994. "Integrated dry NO{sub x}/SO{sub 2} emissions control system calcium-based dry sorbent injection. Test report, April 30--November 2, 1993". United States. https://doi.org/10.2172/10120872. https://www.osti.gov/servlets/purl/10120872.
@article{osti_10120872,
title = {Integrated dry NO{sub x}/SO{sub 2} emissions control system calcium-based dry sorbent injection. Test report, April 30--November 2, 1993},
author = {Shiomoto, G H and Smith, R A and Muzio, L J and Hunt, T},
abstractNote = {The DOE sponsored Integrated Dry NO{sub x}SO{sub 2} Emissions Control System program, which is a Clean Coal Technology III demonstration, is being conducted by Public Service Company of Colorado. The test site is Arapahoe Generating Station Unit 4, which is a 100 MWe, down-fired utility boiler burning a low sulfur Western coal. The project goal is to demonstrate up to 70 percent reductions in NO{sub x} and SO{sub 2} emissions through the integration of: (1) down-fired low-NO{sub x} burners with overfire air; (2) Selective Non-Catalytic Reduction (SNCR) for additional NO{sub x} removal; and (3) dry sorbent injection and duct humidification for SO{sub 2} removal. The effectiveness of the integrated system on a high-sulfur coal will also be investigated. This report documents the fifth phase of the test program, where the performance of the dry sorbent injection of calcium was evaluated as an SO{sub 2} removal technique. Dry sorbent injection with humidification was performed downstream of the air heater (in-duct). Calcium injection before the economizer was also investigated. The in-duct calcium sorbent and humidification retrofit resulted in SO{sub 2} reductions of 28 to 40 percent, with a Ca/S of 2, and a 25 to 30{degrees}F approach to adiabatic saturation temperature. The results of the economizer calcium injection tests were disappointing with less than 10 percent SO{sub 2} removal at a Ca/S of 2. Poor sorbent distribution due to limited access into the injection cavity was partially responsible for the low overall removals. However, even in areas of high sorbent concentration (local Ca/S ratios of approximately 6), SO{sub 2} removals were limited to 30 percent. It is suspected that other factors (sorbent properties and limited residence times) also contributed to the poor performance.},
doi = {10.2172/10120872},
url = {https://www.osti.gov/biblio/10120872}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 01 00:00:00 EST 1994},
month = {Thu Dec 01 00:00:00 EST 1994}
}