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- Alkylation_unit abstract "Alkylation unit, is one of the conversion processes used in the petroleum refineries. It is used to convert isobutane and low-molecular-weight alkenes (primarily a mixture of propene and butene) in the presence of a strong acid catalyst. The acid can be either sulfuric acid or hydrofluoric acid (HF). Depending on the acid used as catalyst the unit takes the name of SAAU (Sulphuric Acid Alkylation Unit) or HFAU (Hydrofluoric Acid Alkylation Unit).Since crude oil generally contains only 10 to 40 percent of hydrocarbon constituents in the gasoline range, refineries use a fluid catalytic cracking unit (FCCU) process to convert high molecular weight hydrocarbons into smaller and more volatile compounds, which are then converted into liquid gasoline-size hydrocarbons. Alkylation processes transform low molecular-weight alkenes and iso-paraffin molecules into larger iso-paraffins with a high octane number. FCCU is a very common unit in a modern oil refinery, but it is not uncommon for a refinery not to have an alkylation unit. Indeed, by 2010 there are some countries in the world without any installed alkylation unit.The product of the unit is called alkylate and is composed of a mixture of high-octane, branched-chain paraffinic hydrocarbons (mostly isoheptane and isooctane). Alkylate is a premium gasoline blending stock because it has exceptional antiknock properties and is clean burning. The octane number of the alkylate depends mainly upon the kind of alkenes used and upon operating conditions. For example, isooctane results from combining butylene with isobutane and has an octane rating of 100 by definition. There are other products in the alkylate effluent, so the octane rating will vary accordingly.Two major licensors (sharing a similar share of the market) of the HFAU process are UOP and Conoco Phillips. The main technology used for the HSAU is the STRATCO process licensed by DuPont, followed by the EMRE technology owned by ExxonMobil. In the last ten years, in excess of 85% of the HSAU cpacity added worldwide has utilized STRATCO DuPont technology.".
- Alkylation_unit wikiPageID "37577603".
- Alkylation_unit wikiPageRevisionID "604281681".
- Alkylation_unit hasPhotoCollection Alkylation_unit.
- Alkylation_unit subject Category:Petroleum_production.
- Alkylation_unit comment "Alkylation unit, is one of the conversion processes used in the petroleum refineries. It is used to convert isobutane and low-molecular-weight alkenes (primarily a mixture of propene and butene) in the presence of a strong acid catalyst. The acid can be either sulfuric acid or hydrofluoric acid (HF).".
- Alkylation_unit label "Alkylation unit".
- Alkylation_unit sameAs m.0nd47pj.
- Alkylation_unit sameAs Q4727734.
- Alkylation_unit sameAs Q4727734.
- Alkylation_unit wasDerivedFrom Alkylation_unit?oldid=604281681.
- Alkylation_unit isPrimaryTopicOf Alkylation_unit.