Sour gas from Russia's Astrakhan will need special processing
Gas from the U.S.S.R.'s Astrakhan field is one of the most difficult ever to be processed. Acidic components comprise more than 38% of the composition, including 14 vol % CO/sub 2/. After five years of international competition, Technip was selected (OGJ, Jan. 3, p. 43) to provide complete engineering and to supply equipment for a processing plant. The installation will treat 770 MMscfd of raw Astrakhan gas to produce 9,000 tons/day of sulfur, about 5% of current world output, and more than 10,000 tons/day of stabilized condensate. The plant will handle a wide range of gas compositions, particularly regarding the H/sub 2/S to CO/sub 2/ ratio, from 1 to 1.7. Carbonyl sulfide (COS) and mercaptan content are also very high. Condensate content is close to 400 g/Nm/sup 3/. Sulfur and condensate production will contribute significantly to the complex's economics. In addition to deacidification and removal of water, propane, and heavier hydrocarbons, the process must provide a total residual sulfur content below 22 mg/Nm/sup 3/ (1 gr/100 scf). This requires removal of all the mercaptans and nearly 99% of the COS contained in the raw gas. Technip's lump sum contract also calls for technical assistance during construction and start-up. The first production train is scheduled to be in operation by July 1986, and the whole complex onstream five months later. Raw gas will be fed to the plant through four pipelines carrying both gas and associated condensate. Processing facilities will include a four train, high-pressure gas/liquid separation unit. Four diethanolamine (DEA) conditioning trains will each sweeten 195 MMscfd.
- OSTI ID:
- 6819514
- Journal Information:
- Oil Gas J.; (United States), Vol. 81:47
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NATURAL GAS
DESULFURIZATION
SULFUR CONTENT
NATURAL GAS PROCESSING PLANTS
OPTIMIZATION
AMINES
CARBON DIOXIDE
CARBON OXYSULFIDE
CONSTRUCTION
ECONOMICS
ETHANOL
GAS CONDENSATES
HYDROCARBONS
HYDROGEN SULFIDES
NATURAL GAS FIELDS
PIPELINES
PROPANE
QUANTITY RATIO
SEPARATION EQUIPMENT
START-UP
THIOLS
USSR
VOLGA RIVER
WATER REMOVAL
ALCOHOLS
ALKANES
ASIA
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CONDENSATES
EASTERN EUROPE
ENERGY SOURCES
EUROPE
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GEOLOGIC DEPOSITS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INDUSTRIAL PLANTS
LIQUIDS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NATURAL GAS LIQUIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REMOVAL
RESOURCES
RIVERS
STREAMS
SULFIDES
SULFUR COMPOUNDS
SURFACE WATERS
030300* - Natural Gas- Drilling
Production
& Processing