Oil gas recovery method and device using absorption method and membrane separating method integration technology

• Main Authors: ZOU SONGLIN, LIN YI, ZHANG BINGQUAN
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2008
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; STORING; TRANSPORTING

The invention relates to an oil gas recovery method and a device, which uses the integration technology of the absorption method and the membrane separation method; the method leads the mixed gas with various oil gas and air produced in the oil receiving and dispatching process of the oil product storage and transportation device to enter an absorption tower through a gas gathering tube and a compressor; dedicated lean absorbent is used in the absorption tower to absorb the oil gas discharged from the evaporation of the recovery of the light oil product, the off-gas that comprises a small amount of oil gas inside the tower is sent to a membrane separator, the oil gas and the air can be further separated, the air is sent to the free air, and the absorbent inside the tower that absorbs the oil gas is sent to a desorption tank to be desorbed and regenerates, thus ensuring the absorbent to be recycled. The oil gas with high concentration separated from the membrane separator and desorbed from the desorption later