Grantee Research Project Results
A Low Cost, Long Life Zinc Oxide Based Sorbent
EPA Contract Number: 68D40028Title: A Low Cost, Long Life Zinc Oxide Based Sorbent
Investigators: Copeland, Robert
Small Business: TDA Research Inc.
EPA Contact: Richards, April
Phase: I
Project Period: September 1, 1994 through March 1, 1995
Project Amount: $55,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1994) RFA Text | Recipients Lists
Research Category: SBIR - Air Pollution , Small Business Innovation Research (SBIR) , Air Quality and Air Toxics
Description:
Coal fired Gasifer Combined Cycles (GCC) have both high efficiency and very low emissions. A critical need for GCCs is a method of removing H2S produced from the sulfur in the coal from the hot gases. There has been extensive research on hot gas clean-up systems, focused on the use of a zinc oxide based sorbent (e.g., zinc titanate). Zinc titanate is the current sorbent of choice but is fairly expensive. The reasons are that the titania is expensive, and the sorbent can be used for only a few (less than 20) cycles before it falls apart.TDA Research, Inc., has identified a new method to reduce the cost of the sorbent and increase sorbent life. They have developed the sorbent production method with a different type of sorbent (tin oxide). The new method produced pellets with an estimated average life of more than 200 cycles under hot gas cleanup conditions. The method should be directly applicable to preparing long life, low cost sorbents containing zinc oxide. This Phase I project will demonstrate that their process can be adapted to the leading sorbent (ZnO), optimize the sorbent composition, and measure cyclic life.
Supplemental Keywords:
Hot Gas Cleanup, Zinc Oxide, Zinc Titanate, Hydrogen Sulfide, Sulfur Removal., Sustainable Industry/Business, RFA, Air, Scientific Discipline, Toxics, Technology for Sustainable Environment, Chemical Engineering, Chemistry, Sustainable Environment, HAPS, Environmental Chemistry, Engineering, Chemistry, & Physics, EPCRA, cleaner production/pollution prevention, air toxics, Environmental Engineering, removal, zinc oxide, long-life sorbent, hot gas streams, zinc titanate, Hydrogen sulfide(See Modification), low-cost sorbent, sulfur, coal fired gasifer combined cycles (GCC), sorbents, Hydrogen sulfide, hot gas stream, hot gas clean up, hot gas clean-upProgress and Final Reports:
SBIR Phase II:
A Low Cost, Long Life Zinc Oxide Based SorbentThe 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.