UNITED EXTRACTION OF NATURAL GAS CONDENSATE AND MANUFACTURING OF LIQUEFIED NATURAL GAS Russian patent published in 2009 - IPC F25J3/02 

FIELD: mechanical engineering, gas distribution.

SUBSTANCE: united method of natural gas condensate and liquefied natural gas inlcudes feeding of gas into column-scrubber in the first location, withdrawal from column-scrubber the first flow of vapor of overhead, depleted by components, more heavy than methane and flow of residue, depleted by components, more heavy than methane. Then the first flow of overhead vapor is cooled and partly condensed the first flow of overhead vapor, in order to form the first two-phase flow. It is divided the first two-phase flow, in order to provide the second flow of overhead vapor and methane-rich the first flow of irrigation. There are introduced enriched by methane the first flow of irrigation into the second location into column-scrubber higher the first location. It is liquefied the second flow of overhead vapor in main heat exchanger, in order to provide product of compressed natural gas. It is divided residue flow in order to provide enriched by ethane flow and flow of product of natural gas condensate, enriched by components, more heavy than methane. It is totally condensed enriched by ethane flow at temperature lower than feeding temperature into column-scrubber in main heat exchanger and forced condensed flow into column-scrubber in the capacity of the second irrigation flow in location, selected from the second location and the third location higher the first location.

EFFECT: effectiveness increase.

41 cl, 6 dwg