acetylene generator: A steel cylinder or tank that provides for controlled mixing of calcium carbide and water to generate acetylene.
acetylene torch: NULL
acid blowcase: NULL
acid cleaning: The use of circulating acid to remove dirt, scale, or other foreign matter from the interior of a pipe.
acid conductor: A vessel designed for refortification of hydrolyzed acid by heating and evaporation of water, or sometimes by distillation of water under partial vacuum.
acid egg: NULL
acid gases: The hydrogen sulfide and carbon dioxide found in natural and refinery gases which, when combined with moisture, form corrosive acids, known as sour gases when hydrogen sulfide and mercaptans are present.
acid lining: In steel production, a silica-brick lining used in furnaces.
acid number: A number derived from a standard test indicating the acid or base composition of lubricating oils, it in no way indicates the corrosive attack of the used oil in service. Also known as corrosion number.
acid polishing: The use of acids to polish a glass surface.
acid process: In paper manufacture, a pulp digestion process that uses an acidic reagent, for example, a bisulfite solution containing free sulfur dioxide.
acid recovery plant: In some refineries, a facility for separating sludge acid into acid oil, tar, and weak sulfuric acid, with provision for later reconcentration.
acid sludge: The residue left after treating petroleum oil with sulfuric acid for the removal of impurities.
acid soot: Carbon particles that have absorbed acid fumes as a by-product of combustion, hydrochloric acid absorbed on carbon particulates is frequently the cause of metal corrosion in incineration.