دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: any chemical compound. one element of which is hydrogen, that dissociates in solution to produce free hydrogen ions. For example, hydrochloric acid. HCI, dissociates in water to produce hydrogen ions, H+, and chloride ions, CI-. This reaction is expressed chemically as HCI + H+ + CI- . See ion.

a reactive material with a low pH. Common oilfield mineral acids are HCl and HCl/HF.

n: a substance having marked basic (alkaline) properties, such as a hydroxide of an alkali metal. See base.

n: Any compound having pH properties higher than the neutral state.

a strongly basic solution.

n: the combining power of a base, or alkali, as measured by the number of equivalents of an acid with which it reacts to form a salt. Any solution that bas a pH greater than 7 is alkaline. See pH.

n: The combining power of a base measured by the maximum number of equivalents of an acid with which it can react to form a salt. In water analysis, it represents the carbonates, bicarbonates, hydroxides and occasionally the borates, silicates and phosphates

n: a continuous operation liquid process for removing acid gas from natural gas by using chemical absorption with subsequent heat addition to strip the acid gas components from the absorbent solution.

n: a substance with metallic properties that comprises two or more elements in solid solution. See ferrous alloy, nonferrous alloy.

n: any of several compounds employed in treating natural gas. Amines are generally used to remove hydrogen sulphide from water solutions and carbon dioxide from gas or liquid streams.

n: 1. a negatively charged ion. 2. the ion in an electrolysed solution that migrates to the anode. See ion. Compare cation.

an ion with a negative charge.

n: The process that the negative ion in the solution was absorbed in the surface of clay.

gravity n: specific gravity as measured by the Baume scale. Two arbitrary scales are employed: one for liquids lighter than water and the other for liquids heavier than water. This scale is also used to describe the density of acid solutions.

n: a highly painful and potentially fatal condition in which air or other breathable gases come out of solution in the bloodstream and cause distress or death. So named because the bending joints of the body are most often affected. Also called decompression sickness.