Grantee Research Project Results
Reducing Diesel NOx and Soot Emissions Via Particle-Free Exhaust Gas Recirculation
EPA Contract Number: 68D30118Title: Reducing Diesel NOx and Soot Emissions Via Particle-Free Exhaust Gas Recirculation
Investigators: Roberts, Daryl L.
Small Business: CeraMem Corporation
EPA Contact: Richards, April
Phase: I
Project Period: September 1, 1993 through March 1, 1994
Project Amount: $50,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1993) RFA Text | Recipients Lists
Research Category: SBIR - Air Pollution , Small Business Innovation Research (SBIR) , Air Quality and Air Toxics
Description:
Diesel engines play an important role in the United States economy for power generation and transportation. However, NOx and soot emissions from both stationary and mobile diesel engines are a major contributor to air pollution. Many engine modifications and exhaust-after-treatment devices have been proposed and tested to reduce the NOx and soot emissions form diesel exhausts. Simple techniques for NOx control such as exhaust gas recirculation (EGR) and injection timing retard increase soot formation. The control of soot formation is possible with diesel particulate filters (DPF's) with intermittent thermal oxidation of carbon soot. However, such filters have limitations associated with filtration efficiency and durability.In this program, a novel diesel emissions control system will be developed. The system will utilize a high-efficiency ceramic filter to filter the exhaust gas. The filter will generate a particulate free exhaust gas, a portion of which will be used in EGR for NOx emissions reduction. The ceramic filter will be regenerated by backpulsing with quick pulses of compressed air. In Phase I, a prototype filter/EGR system will be tested with exhaust from a 35 Kw diesel source and operated for up to one year.
Supplemental Keywords:
Sustainable Industry/Business, Scientific Discipline, Air, Toxics, Technology for Sustainable Environment, Engineering, Chemistry, particulate matter, HAPS, mobile sources, Engineering, Chemistry, & Physics, VOCs, cleaner production/pollution prevention, air toxics, New/Innovative technologies, diesel exhaust, filtration technology, toxic contaminants, particulate emissions, emissions, treatment, pollution prevention, nitrogren oxides (NOx), Nitrogen Oxides, Nox, pollutants, diesel, emission controls, power generation, control, exhaust gas, toxic emissions, nitrogen oxides (Nox), urban air toxics, emission control technologies, particulates, air pollutants, power generation , urban soot, pollution control technologies, ceramic-filter, Volatile Organic Compounds (VOCs), air pollution, exhaust gas recirculation (EGR), diesel engines, stationary sources, diesel exhaust particles, sootProgress 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.