Integrated UCAP (Union Carbide Alkanolamine Process). a new approach to sulfur recovery

Conference · Mon Jan 01 04:00:00 EST 1979 · Nat. Pet. Refiners Assoc. Annu. Meet. Pap.; (United States)

OSTI ID:6554009

Yon, C M ^[1]; Atwood, G R; Swaim, C D

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1. Union Carbide Corp.

Based on the high SO/sub 2/ adsorption capacity, exceptional selectivity for SO/sub 2/ over CO/sub 2/, up to 90Vertical Bar3< stage efficiency of adsorption, and strong inhibition of SO/sub 2/ oxidation exhibited by aqueous triethanolamine in experimental studies, Union Carbide Corp. has developed the UCAP SO/sub 2/ adsorption process, which can be used in desulfurization of refinery streams, flue gas from heaters and boilers, and sulfuric acid plant tail gas. Integrated with a single catalytic Claus reactor, UCAP makes it possible to treat streams very low in H/sub 2/S, for which the Claus process alone is uneconomical, and reduce the SO/sub 2/ level in the plant tail gas to Vertical Bar3; 50 ppm, even when the Claus unit has only 75Vertical Bar3< per pass sulfur yield. The first commercial integrated UCAP unit has been built at Gulf Oil Co.'s Venice, La., refinery. The new process also permits economical recovery of high-quality sulfur from acid gases of oil refineries, natural gas sweetening, coal gasification, or SNG plants, with very low H/sub 2/S/CO/sub 2/ ratio. The CO/sub 2/-free SO/sub 2/ regenerated from the solvent can be recycled to a Claus unit, converted to sulfuric acid, or recovered directly as salable liquid by-product.

• OSTI ID: 6554009
• Report Number(s): CONF-7903175-
• Conference Information: Journal Name: Nat. Pet. Refiners Assoc. Annu. Meet. Pap.; (United States) Journal Volume: AM-79-44
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
020800 -- Petroleum-- Waste Management
ADSORPTION
CHALCOGENIDES
CHEMICAL REACTIONS
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
FLUE GAS
FLUIDS
FOSSIL FUELS
FUELS
GASEOUS WASTES
GASES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
RECOVERY
REFINERY GASES
SORPTION
SULFUR
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
UCAP PROCESS
WASTES