دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: CH2=CHCOOM. Usually used to make polypropylene copolymer.

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.

n: a liquefied hydrocarbon product consisting chiefly of pr0- pane and/or propylene and conforming to the GPA specification for commercial pro- pane as defined in GPA Publication 2140.

n: (LRG) liquid propane or butane produced by a crude oil refinery. It may differ from LP gas in that propylene and butylene may be present.

n: a by-product of refining used as boiler fuel, but with value as petrochemical feedstock. Composed mainly of ethane, ethylene, propane, propylene, butane, and hydrogen.

n pi: the units in a refinery that produce ethylene and propylene, both for the polymer units (to make polyethylene and polypropylene) and for sale to other chemical and plastics producers.

n pi: units in a refinery that polymerize propylene and ethylene in the presence of a catalyst and in a liquid solvent. Polypropylene and polyethylene are produced. Following polymerization, the product is removed from the reactor and processed through a purification facility for removal of catalyst residue and separation of the sol vent. The powdered product is then conveyed in a pneumatic conveyor to the finishing area, where additives are blended with powder and the mixture is processed through an extruder to form pellets.

n: see propylene.

n: the chemical compound of the olefin series having the formula . Its official name is propene.

n: the gas produced from certain petroleum refinery operations (such as cracking or reforming). The composition of refinery gas varies in accordance with the process by which it is produced, but it consists essentially of the same paraffin hydrocarbons as natural gas plus olefins (propylene, ootylene, and ethylene) not found in natural gas.