Gas mixture compressing method for e.g. steam reforming unit, involves drying gas mixture before compression to eliminate water molecules and obtain dry mix for specific value, where one pressure lies between other two pressures

摘要

The method involves compressing a gas mixture (1) at low pressure (PL) to high pressure (PH) by a compression unit (32). Pressure difference is such that compression of the mixture of pressure (P(i-1)) with pressure (Pi) in successive compression steps (Ei), where i varies from 1 to N, N is greater than 1, PO=PL and PN=PH. The mixture attains its dew point for a pressure (PR) which lies between the pressures (P1, PH). The mixture is dried before compression to eliminate water molecules and obtain dry mix by a dryer (34) for i, where the pressure (PR) lies between the pressures (P(i-1), Pi). The gas mixture contains carbon-di-oxide and water. An independent claim is also included for a device for compressing a gas mixture available at a low pressure to high pressure.