Pilot-scale LIDS demonstration

Technical Report · Fri Aug 09 00:00:00 EDT 1991

OSTI ID:6871484

Amrhein, G T ^[1]

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1. Babcock and Wilcox Co., Alliance, OH (United States). Research and Development Div.

This paper describes the results of a pilot-scale demonstration of the LIDS process sponsored by the Ohio Coal Development office (OCDO) and Babcock Wilcox (B W)- LIDS (Limestone Injection with Dry Scrubbing) combines the technologies of furnace sorbent injection and dry scrubbing. The result is a reduction of reagent costs and an increase in sorbent utilization and S0[sub 2] removal beyond what is possible if the technologies are used separately. Furnace sorbent injection using limestone is only capable of about 30% S0[sub 2] reduction and so has limited application. Dry scrubbing is capable of achieving high levels Of S0[sub 2] removal using expensive pebble lime as the sorbent, but is limited by stoichiometry (Ca/S) to use on low sulfur coal. By combining dry scrubbing with furnace sorbent injection, limestone can be used as the reagent and the process is applicable to higher sulfur coals. This is possible because: (1) the reaction that occurs during furnace injection significantly reduces the S0[sub 2] concentration entering the dry scrubber, and (2) the unused limestone from furnace injection is calcined to lime and makes an excellent dry scrubbing reagent. The project successfully demonstrated that LIDS is a viable, low-cost option for controlling SO[sub 2] emissions from coal-fired utility boilers.

• Research Organization: Ohio Coal Development Office, Columbus, OH (United States); Babcock and Wilcox Co., Alliance, OH (United States). Research and Development Div.
• Sponsoring Organization: STOFOH; Ohio State Government, Columbus, OH (United States)
• OSTI ID: 6871484
• Report Number(s): OCDO-93006026; ON: TI93006026; CNN: CDO/D-87-60
• Country of Publication: United States
• Language: English

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