Grantee Research Project Results
Direct Sulfur Recovery
EPA Contract Number: 68D30083Title: Direct Sulfur Recovery
Investigators: Nelson, Sid
Small Business: Sorbent Technologies Corporation
EPA Contact: Richards, April
Phase: II
Project Period: September 1, 1993 through October 1, 1995
Project Amount: $150,000
RFA: Small Business Innovation Research (SBIR) - Phase II (1993) Recipients Lists
Research Category: SBIR - Air Pollution , Small Business Innovation Research (SBIR) , Air Quality and Air Toxics
Description:
The objective of the proposed project is to develop and demonstrate a low-cost alternative to a modified Claus plant for conversion of SO2 to elemental sulfur. More specifically, the objectives are to optimize an existing acid-rain sorbent regeneration process developed by Sorbent Technologies Corporation to yield directly a pure elemental sulfur product and to apply the technology to gas streams having a wide range of compositions.In Phase I, of three strategies examined to increase elemental sulfur yields, one strategy, gas recycling, was observed to be exceptionally effective, yielding 100% conversion of the sulfur released during regeneration to elemental sulfur, with no sulfur species remaining in the exiting gas. Later, an important discovery was made. It was observed that MgO or TiO2 will act as a catalyst for the direct conversion of SO2 to elemental sulfur.
In Phase II, the research in Phase I will be carried forward. The technology will be scaled up to a larger size, evaluated in continuous long-term runs, and optimized.
Supplemental Keywords:
Sustainable Industry/Business, RFA, Air, Scientific Discipline, Toxics, Technology for Sustainable Environment, Engineering, Chemistry, Sustainable Environment, HAPS, Environmental Chemistry, Engineering, Chemistry, & Physics, cleaner production/pollution prevention, air toxics, New/Innovative technologies, Environmental Engineering, sulfur dioxide (SO2), clean technology, chemical use efficiency, waste minimization, gas recycling , coal fired power plants, treatment, gas recycling, sulfer oxide, in-process recycling, pollution prevention, power generation, pollutants, Sulfur Oxides (SO2), regenerable sorbent, air emissions, sorbents, control, sulfur, acid rain sorbent regeneration process, SO2, recovery, sulfur oxides, pollution control technologies, sulfur recovery, desulfurization, regeneration, power generation , cleaner production, waste reduction, air pollution, air pollutant precursors, acid rain, sorbent technology, Sulfur dioxideProgress 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.