PROCEDURE FOR UTILISATION OF LOW-POTENTIAL GAS Russian patent published in 2011 - IPC F04F5/54 

FIELD: machine building.

SUBSTANCE: gases of first, second, and finish steps of oil separation, stripping gases of glycol regeneration installation and torch gases can be utilised as low-potential gases. The procedure consists in ejection compression of low-potential gases of various composition and pressure with flows of high-pressure liquid from pumps of recirculation. Each flow and low-potential gas is supplied into independent ejectors. Further, the procedure consists in removal of heat from gas compression, in successive division of mixture into compressed gas, hydrocarbon fluid and water phase, in throttling, in separation, in heating gas, if necessary, and in supply of products of separation to a consumer. Also, minimal flow rate of high pressure liquid facilitating compression of gas to pressure not higher, than compressed gas of another composition, is set by means of one of pumps of recirculation. Maximal pressure of compressed gases is set by less pressure of compressed gas produced from the independent ejectors at maximal flow rate of low-potential gases.

EFFECT: reduced capital and energy expenditures for utilisation of low-potential gases.