Grantee Research Project Results
Final Report: A New NOx, HC, and Small Particle Filter With a Regeneration-In-Place Capability for Stationary Diesel-Engine Applications
EPA Contract Number: 68D99068Title: A New NOx, HC, and Small Particle Filter With a Regeneration-In-Place Capability for Stationary Diesel-Engine Applications
Investigators: Nelson, Sid
Small Business: Sorbent Technologies Corporation
EPA Contact:
Phase: I
Project Period: September 1, 1999 through March 1, 2000
Project Amount: $70,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1999) RFA Text | Recipients Lists
Research Category: SBIR - Air Pollution , Small Business Innovation Research (SBIR) , Air Quality and Air Toxics
Description:
Stationary diesel engines typically emit copious amounts of NOx, hydrocarbons (HC) and small particulates. No completely satisfactory commercial control- technology exists today to treat diesel-engine exhaust gases. Sorbent Technologies Corporation (Sorbtech) recently developed a simple regenerable filter system that it believes will control stationary diesel-engine emissions. One key to the new technology is a special carbon sorbent that captures and holds up to 7 weight percent NOx. The Phase I project examined the regeneration of this sorbent after it becomes saturated with NOx.The technical objectives of the project were to saturate a large quantity of carbon sorbent with NOx from an actual diesel engine and to employ this material in regeneration studies. The regeneration studies were directed toward developing a regeneration-in-place system, collecting regeneration data, and conducting over 100 saturation-regeneration (sorption-desorption) cycles to observe how NOx-capture performance and sorbent characteristics change with long-term cycling.
Summary/Accomplishments (Outputs/Outcomes):
The objectives of the Phase I SBIR project were met and, based on discoveries made in the project, a significantly improved, low-cost system was developed. Over one hundred twenty-five consecutive saturation-regeneration cycles were performed with a sorbent bed. During cycling, the sorbents quality remained constant and performance actually improved. The final appearance of the sorbent and the performance data suggested that a sorbent life exceeding 1000 cycles may be possible.Conclusions:
Regeneration-in-place was found to be easily achieved by several different approaches. The project results and the discoveries that were made during the project, when taken together with earlier Sorbtech developments, indicate that a simple, low-cost process is possible for reducing NOx levels to nearly zero for not only diesel engines, but for other combustion processes, as well.Supplemental Keywords:
Acid Rain; Smog; Ozone; Global Warming., Sustainable Industry/Business, RFA, Scientific Discipline, Air, Toxics, Technology for Sustainable Environment, Engineering, Chemistry, particulate matter, HAPS, Engineering, Chemistry, & Physics, cleaner production/pollution prevention, air toxics, New/Innovative technologies, diesel exhaust, hydrocarbons, filtration technology, emissions, pollution prevention, hydrocarbon, regenerable filter system, emission controls, innovative technologies, Nox, Sulfur Oxides (SO2), Nitrogen Oxides, air emissions, control, particulates, air pollutants, air pollution, innovative technology, stationary sourcesSBIR Phase II:
A New NOx, HC, and Small Particle Filter With a Regeneration-In-Place Capability for Stationary Diesel Engine Applications | Final ReportThe 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.