Coalescer
From Wikipedia, the free encyclopedia
Coalescer a technological device performing coalescence. Primary use: to separate emulsions in various processes. Basically Coalescer works as reversed emulsifier.
In the area of compressed air purification, coalescing filters are used to separate liquid water and oil from compressed air using a coalescing effect. These filters additionally remove particles. The most commonly used media in this case is Borosillicate micro-fiber.
In the Oil and Gas, Petrochemical and Oil Refining industries, Liquid-Gas coalescers are widely used to remove water and hydrocarbon liquids to <0.011 ppmw (plus particulate matter to <0.3um in size) from natural gas to ensure natural gas quality and protect downstream equipment such as compressors, gas turbines, amine or glycol absorbers, molecular sieves, PSA's, metering stations, mercury guard beds, gas fired heaters or furnaces, heat exchangers or gas-gas purification membranes.
Liquid-Liquid coalecers are widely used in oil refining industry to remove contaminants like amine or caustic from intermediate products in oil refineries and also for dewatering final products like kerosene (jet fuel), LPG, gasolene and diesel to <15 ppmw free water in the hydrocarbon phase. These coalescers are often electrostatic type, in which an alternating electrical field encourages the water droplets to coalesce and settle by gravity.
Phaseseptm Liquid-Liquid coalescers can also be used to separate hydrocarbons from water phases such as oil removal from produced water or pyrolysis gasolene (benzene) removal from quench water in ethylene plants.
