Grantee Research Project Results
Dry Scrubbing of SOx and NOx Over Lathanide-Oxygen-Sulfur Compounds
EPA Contract Number: 68D10102Title: Dry Scrubbing of SOx and NOx Over Lathanide-Oxygen-Sulfur Compounds
Investigators: Jalan, Vinod
Small Business: ElectroChem Inc.
EPA Contact: Richards, April
Phase: II
Project Period: September 1, 1991 through August 1, 1994
Project Amount: $150,000
RFA: Small Business Innovation Research (SBIR) - Phase II (1991) Recipients Lists
Research Category: SBIR - Air Pollution , Small Business Innovation Research (SBIR) , Air Quality and Air Toxics
Description:
Over the past decade, there has been a continuing effort by EPA, DOE, GRI, EPRI, and utility companies toward the development of an inexpensive and reliable method for the removal of SOx and NOx from combustion gases. Existing processes for the combined removal of SOx and NOx have not proven to be particularly effective in meeting cost objectives and current emission standards. Selective catalytic reductions for NOx removal are reaching current emission standards, but they are prohibitively expensive because of the high initial cost of the catalyst and its replacement.In Phase I, cerium oxide doped with strontium oxide, calcium oxide, or lanthanum oxide were identified for potential use for the removal of SOx and NOx from offgases generated by the combustion of fuels in boilers, internal combustion engines, and from IGCC power plants. These compounds have demonstrated many advantages over the state-of-the-art sorbents, and the potential exists for further improvements. Phase I results also demonstrated that ce- rium sulfate is effective for the reduction of NOx using NH3 as a reductant.
The successful utilization of doped cerium oxide sorbent and cerium sulfate catalyst for combined removal of SOx and NOx generated by the combustion of fuels requires additional research and development aimed toward opti- mizing the process and demonstrating the durability of such sorbents.
Supplemental Keywords:
Sustainable Industry/Business, RFA, Scientific Discipline, Air, Toxics, Technology for Sustainable Environment, Engineering, Chemistry, Sustainable Environment, HAPS, Engineering, Chemistry, & Physics, cleaner production/pollution prevention, air toxics, New/Innovative technologies, acid rain precursors, novel catalyst systems, removal, catalysts, dry scrubber, catalytic combustion, combustion gas streams, nitrogren oxides (NOx), boilers , Nitrogen Oxides, Nox, selective catalytic reduction, Sulfur Oxides (SO2), air emissions, selective catalytic reduction (SCR), control, combustion, sorbents, internal combustion power plant, nitrogen oxides (Nox), combustion technology, air pollutants, sulfur oxides, air pollutant precursors, air pollution, lanthanide catalysts, acid rain, sorbent technology, Sox, catalytic reductionProgress and Final Reports:
The 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.