Pilot-Scale Demonstration of A Pulse Combustion In-Furnace NOx Reduction Control TechniqueEPA Contract Number: 68D00053
Title: Pilot-Scale Demonstration of A Pulse Combustion In-Furnace NOx Reduction Control Technique
Investigators: Kelley, John T.
Small Business: Altex Technologies Corporation
EPA Contact: Manager, SBIR Program
Project Period: September 1, 1990 through March 1, 1992
Project Amount: $149,987
RFA: Small Business Innovation Research (SBIR) - Phase II (1990) Recipients Lists
Research Category: Small Business Innovation Research (SBIR)
Effective, low-cost and retrofittable, NO,, emission controls are needed for coal-fired furnaces. The novel Pulse Com- bustor In-Furnace NO. Reduction (PCIFNR) technique utilizes hot pulsating flow to optimally process coal prior to furnace injection. The reactive coal components are then rapidly dispersed and mixed within the furnace to reduce NOx. With the PCIFNR concept, preprocessing of coal and rapid furnace mixing overcome burnout and NO. control limitations of conventional reburning. Since the PCIFNR system is simple and converts combustion energy directly into flow momentum, system and operating costs are low. The concept can also be extended to simultaneously control both NO. and SO.
The Phase I small-scale test results and analyses showed that the PCIFNR concept has very significant NO. reduc- tion and coal burnout advantages over conventional reburning. These advantages result in over a factor of three reduction in cost-per-ton of NO. removal for the PCIFNR system. The objective of the proposed Phase II program is to further develop and confirm the benefits of the concept in pilot-scale tests that simulate utility boiler conditions. Analyses will also be used to extrapolate performance to full-scale boilers and define system costs. The completion of these efforts will promote the commercialization of the PCIFNR system and provide potential users with information to evaluate the benefits of the concept.