Update on performance tests from the COBRA Process, a combined SO{sub 2} and NO{sub x} removal system[Copper Oxide Bed Regenerable Adsorber]

Conference · Thu Jul 01 04:00:00 EDT 1999

OSTI ID:20013468

Breault, R W; Litka, T

The Low Emission Boiler System (LEBS) Program of the US Department of Energy (DOE) is developing advanced power systems to accelerate the commercialization of affordable, highly efficient, and low-emission pulverized coal-fueled electric generating technologies. DB Riley Inc.'s concept for LEBS includes a dry, regenerable flue gas desulfurization and denitrification process. The COBRA (Copper Oxide Bed Regenerable Adsorber) Process can efficiently remove sulfur dioxide (SO{sub 2}) and sulfur trioxide (SO{sub 3}) and reduce nitrogen oxides (NO{sub x}) from flue gas with no solid or liquid byproducts and at a competitive cost. The sulfur laden flue gas is contacted with copper oxide impregnated alumina substrate in a cross flow moving bed reactor operating at 700 F. Sulfur dioxide reacts with the copper to form copper sulfate and the copper oxide/copper sulfate bed acts as a selective catalyst for NO{sub x} reduction. The sulfated sorbent is transported from the bottom of the moving bed reactors to the regenerator vessels where methane is used to reduce the copper sulfate to copper and SO{sub 2}. The concentrated SO{sub 2} stream resulting from regeneration may be oxidized to SO{sub 3} and condensed to sulfuric acid or can be converted to elemental sulfur in a Claus Plant or scrubbed with ammonia to form an ammonium sulfate. This paper will present the results of performance testing conducted on a 1 MW Pilot Scale Facility located at the Illinois Coal Development Park. This facility was designed and built to demonstrate at a reasonable scale the component configurations to be utilized in a full-scale system and to verify and optimize the operation of the integrated system. The ability of laboratory tests, when combined with a model of the moving bed adsorber, to predict the performance of the pilot system will be shown.

• Research Organization: Thermo Power Corp., Waltham, MA (US)
• OSTI ID: 20013468
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
COMBINED SOXNOX PROCESSES
COPPER OXIDES
FLUE GAS
NITROGEN OXIDES
PERFORMANCE
REGENERATION
SELECTIVE CATALYTIC REDUCTION
SULFATION
TEST FACILITIES