A Retrofit and Low-Cost Small Industrial Boiler Flue Gas Purification Technology

EPA Contract Number: EPD05039
Title: A Retrofit and Low-Cost Small Industrial Boiler Flue Gas Purification Technology
Investigators: Wu, Xiaoqun
Small Business: Sorption Technologies Inc.
EPA Contact: Manager, SBIR Program
Phase: I
Project Period: March 1, 2005 through August 31, 2005
Project Amount: $69,990
RFA: Small Business Innovation Research (SBIR) - Phase I (2005) RFA Text |  Recipients Lists
Research Category: SBIR - Air Pollution , Air Quality and Air Toxics , Small Business Innovation Research (SBIR)


This novel technology can simultaneously remove particulate matter smaller than 10 microns (PM10), sulfur dioxide (SO2), nitrogen oxides (NO X), and mercury (Hg) from the flue gases of oil and coal-fired small industrial boilers. The technology uses ozone to oxidize NO into high oxides, and applies an innovative catalytic sorbent material to convert high nitrogen oxides and SO2 into nitric acid and sulfur acid simultaneously in the presence of oxygen and water vapor. In the process, mercury can be chemically fixed in the sorbent, and fine particles can be surface-filtered by the sorbent. Unlike the conventional adsorption process, the proposed innovation does not require any sorbent-generation steps, which makes the system much simpler and low cost. Sorbent Technologies, Inc., will demonstrate the proposed technology by investigating the ozone oxidation and modifying the catalytic sorbent material; testing the material’s PM10, SO2, NO X, and Hg removal performance; and determining the long-term run efficiency.

If successful, the proposed technology can provide a retrofit and inexpensive PM10, SO2, NO X, and Hg removal system for small industrial boiler flue gas purification. It also has the potential for large-scale utility boiler applications.

Supplemental Keywords:

small business, SBIR, industrial boiler, flue gas, purification, air pollution, particulate matter, PM10, sulfur dioxide, SO2, nitrogen oxides, NO X, mercury, Hg, sorbent, EPA, RFA, Scientific Discipline, Air, Toxics, Waste, INDUSTRY, National Recommended Water Quality, Chemical Engineering, air toxics, Environmental Chemistry, HAPS, Industrial Processes, Incineration/Combustion, 33/50, Engineering, Chemistry, & Physics, Environmental Engineering, combustion byproducts, mercury, medical waste incinerator, air pollution control, nitrogen dioxide (NO2), flue gas, coal, sulfur dioxide (SO2), Sox, flue gas purification, combustion technology, industrial boilers, Mercury Compounds, mercury & mercury compounds, flue gas emissions, aqueous scrubbing, combustion, combustion exhaust gases, coal combustion, coal fired power plants, combustion flue gases, toxicity characteristic leaching procedure, removal, flue gases, combustion waste recovery

Progress and Final Reports:

  • Final Report