Grantee Research Project Results
In-Duct Selective Catalytic Reduction of NOx
EPA Contract Number: 68D30133Title: In-Duct Selective Catalytic Reduction of NOx
Investigators: Kittrell, J. R.
Small Business: KSE Inc.
EPA Contact: Richards, April
Phase: I
Project Period: September 1, 1993 through March 1, 1994
Project Amount: $49,975
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:
The conventional control device of NOx emissions from stationary sources at 90% removal efficiency is the Selective Catalytic Reduction (SCR) system. Conventional SCR systems rely on monolithic catalysts; these catalysts often represent nearly one- half the capital investment. In recent years, European regulations have prompted development of in-duct dust injection control processes for certain gaseous emissions. These in-duct systems have been demonstrated to provide lower capital and operating costs than alternative systems.In the Phase I research, the technical feasibility is to be demonstrated of an in-duct SCR control process for NOx control from gas-fired stationary sources. From preliminary laboratory experiments, this in-duct SCR technology appears able to utilize highly active, small particle SCR catalysts to achieve remarkable reactor productivity, with space velocities of approximately 1,000,000 hr-1. The process reduces internal catalyst diffusion limitations, thereby capturing the inherent catalyst activity. The in-duct SCR technology holds promise of approaching the low life- cycle costs of NOx control through non-catalytic urea injection, while achieving the high NOx removal efficiencies of conventional catalytic SCR systems. Ammonia slip may also be more effectively controlled.
Supplemental Keywords:
Sustainable Industry/Business, Scientific Discipline, Air, Toxics, Technology for Sustainable Environment, Engineering, Chemistry, HAPS, Engineering, Chemistry, & Physics, VOCs, cleaner production/pollution prevention, air toxics, New/Innovative technologies, catalysts, removal, catalytic combustion, emissions, pollution prevention, treatment, nitrogren oxides (NOx), Nox, Nitrogen Oxides, air emissions, selective catalytic reduction, selective catalytic reduction (SCR), control, life cycle analysis, catalyst composition, nitrogen oxides (Nox), emission control technologies, air pollutants, life cycle assessment, pollution control technologies, non-catalytic urea injection, air pollution, Volatile Organic Compounds (VOCs), stationary sourcesProgress 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.