دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a process for manufacturing components for 100-octane gasoline. An alkyl group is introduced into an organic compound either with or without a catalyst. Now usually used to mean alkylation of isobutane with propene, butenes, or hexenes in d1e presence of concentrated sulphuric acid or anhydrous hydrofluoric acid.

a reverse cracking process that convents hydrocarbon light ends (olefins) into longer chain, liquid fuels.

n: a liquefied hydrocarbon product composed chiefly of butanes and pr0- pane. If it originates from a refinery, it may also contain butylenes and propylene.

a butane derivative used in manufacture of synthetic rubber (elastomers).

n: a paraffin hydrocarbon, C4H10 , that is a gas in atmospheric conditions but is easily liquefied under pressure. It is a constituent of liquefied petroleum gas. See commercail butane, field-grade butane, normal butane.

a four carbon chain alkane, may be a liquid in the reservoir, but vaporizes as pressure is released. Part of the natural gas liquid components.

n: see commercial butane.

n pl: the quantity of butane extracted in a precessing plant for wich lease settlement is included in the settlement made for natural gasoline by virtue of the gasoline settlements being used on a higher vapour pressure natural gasoline actually extracted. Sometimes called free butane or excess butanes.

n: a liquefied hydrocarbon consisting chiefly of butane or butylenes and conforming to the GPA specification for commercial butane defined in GPA Publication 2140.

n: a light hydrocarbon liquid obtained by condensation of hydrocarbon vapours. It consists of varying proportions of butane, propane, pentane, and heavier fractions, with little or no methane or ethane.

the part of the hydrocarbon stream that is a vapor in the formation and condenses to a liquid after being cooled. Normally the volatile condensate has a composition of C5 to C8 and an API gravity of >40.

n: hydrocarbon mixture remaining after the removal of butane and lighter hydrocarbons.

n: a unit of equipment for separating butane, with or without lighter components, from a mixture of hydrocarbons and leaving a bottoms product that is essentially butane free.