LIQUEFYING UNIT Russian patent published in 2020 - IPC F25J1/00 

FIELD: physics.

SUBSTANCE: invention relates to cryogenic equipment, namely, to liquefaction plants of natural gas. Proposed plant comprises interlocking clusters 1 and heating 40. Cryo-block 1 comprises series-arranged additional heat exchanger 2, as well as pre-cooling heat exchanger 4 and deep cooling heat exchanger 5 with filter-coalescer 6 between them. At the outlet of heat exchanger 5 filter-separator 7 is installed. Line 3 is divided into high pressure gas flow line 8 and high pressure gas production line 10. Line 8 is connected to expander 12, at the outlet of which filter-separator 13 is installed. Line 10 is connected to the condensation heat exchanger of product gas 14, after which there is filter-trap 15 and choke 16 interacting with the line of the production stream of low-pressure gas 11 connected to the input of separator- accumulator 18. Equipment of clues 1 and 40 is arranged in a mirror manner with alternate operation in cooling and heating modes.

EFFECT: technical solution is aimed at increasing efficiency, simplifying liquefaction process and improving operating reliability of the plant.

1 cl, 1 dwg