JOSEPH H FIELD
Engineers in Pittsburgh, PA
License number
Pennsylvania PE002869E
Category
Engineers
Type
Professional Engineer
Address
Address
Pittsburgh, PA 15243
Personal information
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Address
Phone
609 Fordham Ave, Pittsburgh, PA 15226
67 Red Horse Rd, Pottsville, PA 17901
906 W Bridge St, Phoenixville, PA 19460
836 Ferry Rd, Doylestown, PA 18901
10866 Knights Rd, Philadelphia, PA 19154
Professional information
Selective Removal Of H.sub.2 S From Gas Mixtures Containing Co.sub.2 And H.sub.2 S
US Patent:
4293531, Oct 6, 1981
Filed:
Aug 7, 1980
Appl. No.:
6/176203
Inventors:
Joseph H. Field - Pittsburgh PA
Donald H. McCrea - Pittsburgh PA
Donald H. McCrea - Pittsburgh PA
Assignee:
Benfield Corporation - Pittsburgh PA
International Classification:
B01D 5334
US Classification:
423232
Abstract:
A process for selectively absorbing H. sub. 2 S from gas mixtures which contain CO. sub. 2 and H. sub. 2 S in a molar ratio of 4:1 or greater and in which the gas flow rate varies substantially. Alkali metal carbonate solutions are used with absorption under pressure and at an elevated temperature and desorption by steam stripping at about atmospheric pressure. The degree of selectivity of H. sub. 2 S removal is maintained constant despite substantial variations in the gas flow rate by maintaining a constant stripping steam/gas ratio selected to provide the desired partial pressure of H. sub. 2 S in the purified gas and by adjusting the solution/gas ratio to a value in the vicinity of that at which the partial pressure of H. sub. 2 S in the purified gas remains at said selected value while the difference between the partial pressures of CO. sub. 2 and H. sub. 2 S in the purified gas reaches a maximum value, and by then maintaining such solution/gas ratio as the gas flow rate varies.