Gas Processing Plants - Linde Engineering

2Gas processing plants.Gas processing plants are a group of single processunits offered by Linde Engineering. Theseunits include a great deal of proprietary processand component manufacturing know-how in thearea of cryogenic separation and purification ofgases. They serve for the purification and cryogenicseparation of gas mixtures. Cryogenicseparation technology and physical or chemicalscrubbing processes come into application forthese units that frequently are enquired by engineeringcompanies implementing them as singleunits within a larger contract plant. Independentlyendusers may install them as supplement toexisting gas generation facilities. Gas processingplants are therefore to a large extend based onLinde´s proprietary process and production knowhow.The units are tailored to the individual applicationand requirement of the client. Plant designand scope of supply will typically include severalproprietary equipment items produced in Lindeworkshops like plate-fin heat exchangers, coilwoundheat exchangers or the isothermal reactor.Frequently such equipment will be assembledin the workshop and supplied to site as cold box.Partial condensation processesand liquid methane washCryogenic processes for the recovery of purecarbon monoxide and pure hydrogen fromgases resulting from partial oxidation or catalyticreforming processes. Carbon monoxide is mainlyused for the production of acetic acid, formidacid, polyurethane, poly-carbonates andmethyl-acrylates. The desired purity of carbonmonoxide depends on the prevailing requirementsand can be adjusted into the ppmrange with respect to the residual contentsof hydrogen and methane.Liquid nitrogen washThe production of ammonia requires the adjustmentof the stochiometric nitrogen/hydrogenratio to a value of 1:3. Simultaneously other traceimpurities like methane, argon and carbon monoxide(below 5ppm) should be removed to preferentiallyoperate the ammonia synthesis in theabsence of inert components. The liquid nitrogenwash is typically arranged downstream ofthe RECTISOL ® scrubbing process, if partial oxidationof coal or residue oil were selected asfeedstock basis for ammonia production. Theunit is generally supplied as assembled coldboxand includes an upstream adsorber station.Partial condensation cold box in Clearlake, USA