Grantee Research Project Results
An Improved NOXSO Sorbent for the Removal of NOx and SOx from Flue Gas
EPA Contract Number: 68D60041Title: An Improved NOXSO Sorbent for the Removal of NOx and SOx from Flue Gas
Investigators: Copeland, Robert
Small Business: TDA Research Inc.
EPA Contact: Richards, April
Phase: I
Project Period: September 1, 1996 through March 1, 1997
Project Amount: $70,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1996) RFA Text | Recipients Lists
Research Category: SBIR - Air Pollution , Small Business Innovation Research (SBIR) , Air Quality and Air Toxics
Description:
Coal fired power plants are well developed and efficient but have high emissions of NOx and SOx. Current expendable sorbents are effective but incur significant costs for the purchase of the expendable sorbent and the disposal of spent sorbent. Therefore, a regenerable sorbent is needed to remove the SOx and NOx produced by combustion of the coal. A process known as NOXSO, which uses a regenerable sodium aluminate (NaAlO2) sorbent for the simultaneous removal of both NOx and SOx, is being commercialized under the Department of Energy Clean Coal Technology program. Although NaAlO2 can theoretically hold >39% SO2 (wt.), the current NOXSO sorbent suffers from a low SO2 loading (2.5% SO2 by weight). The low loading results in a very high sorbent circulation rate, which in turn causes a high parasitic power consumption (4% of the total electrical generation). In addition, because of the low sulfur loading the sorbent is cycled very frequently, resulting in high attrition losses and operating costs.TDA Research, Inc. has identified a new method which should increase the sorbent loading without reducing the sorbent's life. They originally developed the sorbent production method for use with a different type of sorbent (tin oxide and zinc oxide for coal gasificationapplications). The methods will be used to produce an improved NOXSO sorbent with a high SO2 loading. By reducing the sorbent circulation rate, they should simultaneously reduce parasitic power and capital cost, and increase the effective life of the sorbent. The purpose of this project is to show the feasability of this concept.
Supplemental Keywords:
small business, SBIR, air emissions, engineering, chemistry, regeneration., RFA, Air, Scientific Discipline, Waste, Toxics, Chemistry, HAPS, Environmental Chemistry, Engineering, Chemistry, & Physics, Incineration/Combustion, Atmospheric Sciences, air toxics, Environmental Engineering, hazardous air pollutants, combustion contaminants, incineration, NOxSO process , emissions, coal fired power plants, sulfer oxide, atmospheric chemistry, Nitrogen Oxides, Sulfur Oxides (SO2), emission controls, combustion, sorbents, clean combustion, combustion byproducts, industrial technology, coal combustion, combustion technology, industrial air pollution, ambient emissions, emission control technologies, air pollutants, power generation , sulfur oxides, regeneration, emissions contol engineering, air pollution, ambient air qualityProgress and Final Reports:
SBIR Phase II:
An Improved NOXSO Sorbent for the Removal of NOx and SOx from Flue GasThe perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.