Commercial runs show TiO/sub 2/ Claus catalyst retains activity

Journal Article · Mon Aug 10 00:00:00 EDT 1987 · Oil Gas J.; (United States)

OSTI ID:6207864

Nougayrede, J; Philippe, A; Quesmerel, E; Vermeersch, R

Commercial data are given for the CRS 31 Claus catalyst, jointly developed by Rhone Poulenc and Societe Nationale Elf Aquitane (Production) (SNEA). The data confirm laboratory results that show the catalyst's ability to deliver more complete hydrolysis in the first reactor of Claus sulfur recovery plants, and its ability to maintain activity in the second and third reactors. The most important losses in sulfur yields in Claus plants generally come from COS and CS/sub 2/ formed in the thermal steps of the process in the first reactor, and from the low Claus activity of alumina-based catalysts in the second and third reactors. In the first reactor, loaded with alumina-based catalyst, hydrolysis is only partial. Low Claus activity in second and third reactors is caused by the inevitable sulfation of the alumina. Catalytic-activity decrease of aluminas is caused particularly by the presence of oxygen, even in trace amounts, in the Claus gases. Therefore, in the first reactor, the CS/sub 2/ hydrolysis rate is lowered in the subsequent reactors, the H/sub 2/ + SO/sub 2/ conversion significantly drops. The chemical composition of CRS 31, TiO/sub 2/ only, in the same operating conditions, causes a significant improvement in activity because of its increased resistance to sulfation. The economics of the process are given.

• Research Organization: Societe Nationale Elf Aquitaine, Paris
• OSTI ID: 6207864
• Journal Information: Oil Gas J.; (United States), Vol. 85:32
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CLAUS PROCESS
CATALYSTS
NATURAL GAS
DESULFURIZATION
TITANIUM OXIDES
CATALYTIC EFFECTS
ALUMINIUM OXIDES
BENCH-SCALE EXPERIMENTS
CHEMICAL REACTORS
HYDROLYSIS
NATURAL GAS PROCESSING PLANTS
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
INDUSTRIAL PLANTS
LYSIS
OXIDES
OXYGEN COMPOUNDS
SOLVOLYSIS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
030300* - Natural Gas- Drilling
Production
& Processing
400201 - Chemical & Physicochemical Properties