دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a naturally occurring clay that, after activation, usually with acid, is used mainly as a decolourant or refining agent, and sometimes as a desulphuriser, coagulant, or catalyst.

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 substance that alters, accelerates, or instigates chemical reactions without itself being affected.

a chemical that enables or speeds up a chemical reaction without being consumed by the reaction.

n: 1. the breaking down of low temperatures and pressures.2. a motor gasoline refining process in which heavy hydrocarbon components are broken down into light hydrocarbon components using catalysts and relatively low temperatures and pressures. It produces a gasoline that has a higher octane rating and a lower sulphur content than that produced by thermal cracking.

a chlorine atom substituted onto an alkane (hydrocarbon chain). These materials have been identified as refinery catalyst poisons.

n: the process of breaking down large chemical compounds into smaller compounds under the influence of heat or catalysts. In petroleum refining, the two major types of cracking are thermal cracking and

a protein based (non-living) material that can serve as a catalyst for many organic reactions.

n: material other than a catalyst introduced into a plant for processing. With regard to natural gas, used as an essential component of a process for the production of a product. Use of gas as a feedstock may be required because of the chemical reaction involved, or because of the physical burning characteristics of gas compared with other fuels, such as temperature and by-products. Examples of feedstock use include fertiliser manufacture, glass manufacture, and white brick manufacture.

valence state +3 iron in solution. A very common catalyst in oil field emulsion and sludge formation. Precipitates at iron hydroxide when the pH exceeds 1.8 to 2.2 (depending on sour conditions).