High temperature hydrogen sulfide adsorption on activated carbon - I. Effects of gas composition and metal addition
Carbon
By: M.P. Cal, B.W. Strickler, and A.A. Lizzio
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Abstract
Various types of activated carbon sorbents were evaluated for their ability to remove H2S from a simulated coal gas stream at a temperature of 550 ??C. The ability of activated carbon to remove H2S at elevated temperature was examined as a function of carbon surface chemistry (oxidation, thermal desorption, and metal addition), and gas composition. A sorbent prepared by steam activation, HNO3 oxidation and impregnated with Zn, and tested in a gas stream containing 0.5% H2S, 50% CO2 and 49.5% N2, had the greatest H2S adsorption capacity. Addition of H2, CO, and H2O to the inlet gas stream reduced H2S breakthrough time and H2S adsorption capacity. A Zn impregnated activated carbon, when tested using a simulated coal gas containing 0.5% H2S, 49.5% N2, 13% H2, 8.5% H2O, 21% CO, and 7.5% CO2, had a breakthrough time of 75 min, which was less than 25 percent of the length of breakthrough for screening experiments performed with a simplified gas mixture of 0.5% H2S, 50% CO2, and 49.5% N2.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | High temperature hydrogen sulfide adsorption on activated carbon - I. Effects of gas composition and metal addition |
| Series title | Carbon |
| DOI | 10.1016/S0008-6223(00)00010-5 |
| Volume | 38 |
| Issue | 13 |
| Year Published | 2000 |
| Language | English |
| Publisher | Elsevier Science Ltd |
| Publisher location | Exeter, United Kingdom |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Carbon |
| First page | 1757 |
| Last page | 1765 |
| Google Analytic Metrics | Metrics page |