Process design guidelines vary widely

Journal Article · Mon Feb 20 04:00:00 EST 1989 · Oil Gas J.; (United States)

OSTI ID:5921779

Schaack, J P; Chan, F

There are guidelines and procedures for the design and cost evaluation of various H/sub 2/S-scavenging processes for checking the technical merits of a bid, and the identification of essential process parameters during the bid preparation. The following general guidelines apply to the design of the formaldehyde-methanol, metallic oxide, and caustic-based scavengers. The sour gas must enter the contractor at or preferably above its hydrocarbon dew point. Special attention must be paid to the gas line between the inlet separator and the contactor. Insulation, heat tracing, or even gas preheating (about 5/sup 0/F. greater than the hydrocarbon dewpoint) should be evaluated. While foaming does not apply with the iron sponge process, the presence of liquid hydrocarbons should also be avoided. With iron sponge units or other metallic oxide-based scavengers, installation of a strainer downstream of the contactor is recommended. The H/sub 2/S-removal efficiency of the various processes is not affected by the operating pressure or the gas CO/sub 2/ concentration. However, when the CO/sub 2/-over H/sub 2/S ratio exceeds 10,000, the solvent supplier's technical group should be consulted. Checking the gas for the presence of waxes and asphaltenes which may plug or foul the system is recommended. Stress relief of the absorbers is recommended.

• Research Organization: 9901729
• OSTI ID: 5921779
• Journal Information: Oil Gas J.; (United States), Journal Name: Oil Gas J.; (United States) Vol. 87:8; ISSN OIGJA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ALCOHOLS
ALDEHYDES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
ENERGY SOURCES
EQUIPMENT
FLUIDS
FORMALDEHYDE
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROXY COMPOUNDS
INDUSTRIAL PLANTS
LIQUEFIED GASES
LIQUEFIED NATURAL GAS
LIQUEFIED PETROLEUM GASES
LIQUIDS
METHANOL
NATURAL GAS
NATURAL GAS LIQUIDS
NATURAL GAS PROCESSING PLANTS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM PRODUCTS
PRECIPITATION SCAVENGING
PROCESSING
REMOVAL
SEPARATION PROCESSES
SOUR CRUDES
SULFIDES
SULFUR COMPOUNDS
TECHNOLOGY ASSESSMENT
WASHOUT