Recycle butenes to cracking
Pyrolysis of neat n-butenes is frequently attractive versus alkylation or gasoline blending. Lyondell Petrochemical Co.'s plant has the flexibility to process feedstocks from ethane through heavy gas oils. Optimum processing conditions were determined via pilot plant experiments and verified using a unique sampling device on the commercial furnace. The Lyondell Petrochemical olefins complex consists of two world-scale Lummus-designed plants capable of producing 2.8 billion pounds per year of ethylene. One plant started up in 1976; the other came on line in 1977. The plants were designed to crack a range of feedstocks, from naphthas to gas oils. These feedstocks were supplied from the ARCO Houston Refinery. Over the years, ARCO has added feedstock flexibility, and the plants can now crack a range of feedstocks from ethane to gas oils. Downstream units in the Lyondell complex process the pyrolysis C/sub 4/S from the Olefins plants to recover butadiene. The raffinate from the butadiene recovery plant, known as Raffinate-I, is sent to an MTBE plant for production of MTBE from the contained isobutylene in the Raffinate-I. The butenes from the MTBE plant are known as Raffinate-II. The composition of the Raffinate-II varies depending upon the feedslate to the Olefins plants, but ''typical'' compositions are given.
- Research Organization:
- Lyondell Petrochemical Co., Channelview, TX
- OSTI ID:
- 7229554
- Journal Information:
- Hydrocarbon Process.; (United States), Journal Name: Hydrocarbon Process.; (United States) Vol. 65:11; ISSN HYPRA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
2-METHYLPROPENE
ALKENES
ALKYLATION
BUTADIENE
BUTENES
CATALYTIC CRACKING
CHEMICAL PLANTS
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DIENES
ECONOMIC ANALYSIS
ECONOMICS
ETHYLENE
FUELS
FUNCTIONAL MODELS
GASOLINE
HYDROCARBONS
INDUSTRIAL PLANTS
LIQUID FUELS
MIXING
ORGANIC COMPOUNDS
OXIDATION
PETROCHEMICAL PLANTS
PETROLEUM PRODUCTS
PETROLEUM REFINERIES
PILOT PLANTS
POLYENES
PYROLYSIS
RECYCLING
REDUCTION
SAMPLING
THERMOCHEMICAL PROCESSES