دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the volume of gas remaining after processing in a plant.

n: a chemical family of specific organic compounds, including monoethanolamine (MEA),diethanolamine (OEA),and triethanolamine (TEA). These chemicals, and proprietary mixtures containing them and other amines, are used extensively for the removal of hydrogen sulphide and carbon dioxide from other gases and are particularly adapted for obtaining the low acid gas residuals that are usually specified by pipelines.

n: noncombustible residue from the gasification or burning of coal or a heavy hydrocarbon.

n: petroleum with a high proportion of naphthenic compounds, which leave relatively high proportions of asphaltic residue when refined.

n: one of a group of solid. liquid, or semisolid materials that are predominantly mixtures of heavy hydrocarbons and their non-metallic derivatives and are obtained either from natural bituminous deposits or from the residues of petroleum refining.

n: any distillation made in accordance with ASTM procedure. Generally refers to a distillation test to determine the initial boiling point, the temperature at which percentage fractionations of the sample are distilled, the final boiling point, and quantity of residue.

n: The process that superpolymer is destroied by the microbe and macromolecule fractures to micromolecule.

breaking down alkanes by bacterial action. Common by psedomonis and ultramonis bacteria and other bacterial strains that digest parts of the crude oil structures. Useful for remediating oil spills or tank bottom residuals.

n: as applied to gas, a given sendout of gas remaining fairly constant over a period of time and usually not temperature sensitive. For example, residential base load is a given send-out of gas consumed by clothes dryers, water heaters, and in cooking. base map n: horizontal representation of nongeologic surface features such as streams, roads, buildings, survey benchmarks, and property lines.

n pi: 1. the liquids and the residue that collect in the bottom of a vessel (such as tank bottoms) or that remain in the bottom of a storage tank after a period of service.2. the residual fractions remaining at the bottom of a fractionating tower after lighter components have been distilled off as vapours.

n: see residuals.

a fuel oil, normally with high sulfur and high viscosity. API gravity of about 10.5o. Also called Navey Heavy and Number 6 fuel oil.