A process which combines thermal cracking or reforming of naphtha with thermal polymerization or alkylation of hydrocarbon gases carried out in the same reaction zone.


Related Terms

MOVING-BED CATALYTIC CRACKING

[CHEMENG] Petroleum refining process for cracking (breaking) of long hydrocarbon molecules by use of heat, pressure, and a granular cracking catalyst that is continuously cycled between the reactor vessel and the catalyst regenerator.

MEAN-AVERAGE BOILING POINT

Pseudo boiling point for a hydrocarbon mixture; calculated from the American Society for Testing and Materials distillation curve's volumetric average boiling point.

HYDROCRACKER

A high-pressure processing unit that cracks long hydrocarbon molecules under a high-hydrogen-content atmosphere.

HYDROCARBON BLENDING VALUE

Octane number rating for a 20% blend of a hydrocarbon with a 60:40 mixture of isooctane:n-heptane, which has been recalculated for a hypothetical 100% concentration of the tested hydrocarbon.

ANTISTATIC ADDITIVE

An additive that increases the conductivity of a hydrocarbon fuel to hasten the dissipation of electrostatic charges during high-speed dispensing, thereby reducing the fire/ explosion hazard.

HYDROCARBON

Compound containing only carbon and hydrogen. Petroleum consists chiefly of hydrocarbons.

BITUMEN

Also called asphalt or tar, bitumen is the brown or black viscous residue from the vacuum distillation of crude petroleum. It also occurs in nature as asphalt 'lakes' and 'tar sands'. It consists of high molecular weight hydrocarbons and minor amounts of sulfur and nitrogen compounds.

CATALYST

A substance which speeds a chemical action without undergoing a chemical change itself during the process. Now used in catalytic converters to control amount of unburned hydrocarbons and CO in automobile exhaust.

CATALYTIC CONVERTER

An integral part of vehicle emission control systems since 1975. Oxidizing converters remove hydrocarbons and carbon monoxide (CO) from exhaust gases, while reducing converters control nitrogen oxide (NOx) emissions. Both use noble metal (platinum, palladium or rhodium) catalysts that can be 'poisoned' by lead compounds in the fuel or lubricant.

PARAFFINIC

A type of petroleum fluid derived from paraffinic crude oil and containing a high proportion of straight chain saturated hydrocarbons. Often susceptible to cold flow problems.

Related questions

MarineProHelp 2018 - 2020