Chemistry of inorganic compounds – Carbon or compound thereof – Oxygen containing
Patent
1978-01-16
1979-09-25
Thomas, Earl C.
Chemistry of inorganic compounds
Carbon or compound thereof
Oxygen containing
423220, 423522, 423563, 423573R, 55 23, 62 12, 62 23, 62 31, C01B 3122, B01D 5334
Patent
active
041691334
ABSTRACT:
The invention relates to a process for recovering the sulfur components of acidic gases collected by gas desulfurization. The inventive concept is to first compress a stream of the acidic gas (known as "acid gas") up to a pressure of 8.00 to 12.00 atmospheres absolute. Then this compressed stream of gas is cooled to -35.degree. to -45.degree. C. The pressure on this cooled gas is reduced to a pressure of 1.05 to 2.00 atmospheres absolute. Subsequently, the gas is further cooled to a temperature of -55.degree. to -65.degree. C. Finally, the resulting mixture is conducted to a separator where frozen solid constituents are separated from the gaseous constituents. The gaseous constituents include substantially all of the sulfides produced during the gas desulfurization and the frozen solid particles consist essentially of carbon dioxide.
REFERENCES:
patent: 2996891 (1961-08-01), Tung
patent: 3074245 (1963-01-01), Becker
patent: 3224208 (1965-12-01), Schlumberger et al.
patent: 3290890 (1966-12-01), Bray et al.
patent: 3966875 (1976-06-01), Bratzler et al.
Krupp-Koppers GmbH
Striker Michael J.
Thomas Earl C.
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