Use TAME and heavier ethers to improve gasoline properties

Journal Article · Wed Feb 01 04:00:00 EST 1995 · Hydrocarbon Processing; (United States)

OSTI ID:6892568

Ignatius, J; Jaervelin, H; Lindqvist, P ^[1]

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1. Neste Engineering, Porvoo (Finland)

Producing oxygenates from all potential FCC tertiary olefins is one of the most economic methods for reducing olefins and Reid vapor pressure (Rvp) in motor gasoline. MTBE production based on FCC isobutylene has reached a very high level. But the amount of MTBE from a refinery sidestream MTBE unit is insufficient for producing reformulated gasoline (RFG) and additional oxygenates must be purchased. The next phase will see conversion of isoamylenes in FCC light gasoline to TAME. Very little attention has been given to the heavier tertiary olefins present in the FCC light gasoline like tert-hexenes and heptenes. This route allows higher levels of oxygenates production, thereby lowering Rvp and the proportion of olefins in the gasoline pool and maximizing the use of FCC olefins. By using all the components produced by an FCC efficiently, many gasoline problems can be solved. Isobutene is converted to MTBE, C[sub 3]/C[sub 4] olefins are converted to alkylate and C[sub 5] tertiary olefins can be converted to TAME. All of these are preferred components for gasoline quality. By producing more oxygenates like MTBE, TAME and heavier ethers, a refinery can be self-sufficient in blending reformulated gasoline and no oxygenates need to be purchased. The technology for producing TAME and other ethers is described.

• OSTI ID: 6892568
• Journal Information: Hydrocarbon Processing; (United States), Journal Name: Hydrocarbon Processing; (United States) Vol. 74:2; ISSN HYPRAX; ISSN 0018-8190
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020500 -- Petroleum-- Products & By-Products
10 SYNTHETIC FUELS
100200* -- Synthetic Fuels-- Production-- (1990-)
ADDITIVES
AIR POLLUTION ABATEMENT
ALKENES
ALKYLATION
BY-PRODUCTS
CATALYTIC CRACKING
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DIAGRAMS
ENERGY SOURCES
ETHERS
FLOWSHEETS
FOSSIL FUELS
FUEL ADDITIVES
FUELS
GASOLINE
HYDROCARBONS
LIQUID FUELS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM PRODUCTS
POLLUTION ABATEMENT
PYROLYSIS
SYNTHESIS
THERMOCHEMICAL PROCESSES