Patent UA-102947-C2 (UA)
Title: System of installations for liquefaction - re-gasification of cryogenic gases
Inventor: MATSEVYTYI YURII MYKHAILOVYCH
IPC: F25J1/00
Filed: 2012-06-18
Abstract: The invention relates to gas industry, cryogenic engineering, and can be used in gas-distribution systems, terminals of liquefied gases, installations for liquefaction of natural gas, with those operated under conditions of absence of infrastructural objects of power supply and installations with re-gasification at high and super-high pressures included. A system of installations for liquefaction-regasification of cryogenic gases includes circuit of target high-boiling cryo-agent with branch for liquefaction in installation of multi-stage heat exchange, this includes a vessel for gaseous high-boiling cryo-agent, the second after-pressing compressor, connected in sequence cavities of direct flow of the third, fourth and fifth regenerative heat exchangers, through the second throttle connected to the second separator, with the liquid outlet this is connected to the vessel of liquefied high-boiling cryo-agent, and the gas outlet of separator through the cavity of direct flow of the sixth regenerative heat exchanger is connected to the vessel as well. The vessel of the installation of multi-stage heat exchange through main pipeline is connected to the vessel of liquefied high-boiling cryo-agent of the branch of re-gasification of cryogenic heat-pump installation, this is connected to the input of the second pump of liquefied gases connected with the outlet to the cavity of return flow of the first heat exchanger connected to the first expander connected through the heat exchangers of the cooling system of the compressor to the vessel of consumer of high-boiling compressed cryo-agent of high and super-high pressures. The system of installations includes as well a circuit of low-boiling buffer cryo-agent with branch for liquefaction in cryogenic heat-pump unit that includes a compressor connected to the end cooler that through the block of complex purification is connected to the connected in sequence cavities of direct flow of the first and the second regenerative heat exchangers, respectively, at that the cavity of direct flow of the second heat exchanger through the first throttle is connected to the inlet of separator, gas outlet of that one is connected to the connected in sequence cavities of back flow of the second and the first heat exchangers, respectively, connected by outlet to the inlet of the compressor. At that the liquid outlet of separator through the vessel of liquefied low-boiling cryo-agent of cryogenic heat pump installation, main pipeline and the vessel of liquefied low-boiling cryo-agent of the installation of multi-stage heat exchange is connected to the first pump of liquefied gases. The pump of liquefied gases of the branch of re-gasification of the circuit of low-boiling cryo-agent through connected in sequence high pressure cavities of return flow of the sixth and fourth heat exchangers, respectively, is connected to the second expander, this is by outlet connected to the second cavities of return low pressure flow of the fifth, fourth and third heat exchangers, respectively, connected to the consumer’s vessel or to atmosphere, at that the third cavity of the third heat exchanger is connected to the Freon refrigerating machine. Increase of energy effectiveness of liquefaction – re-gasification of cryogenic gases is achieved, with delivery to consumer of target re-gasified gas at given high and super-high pressure above critical and increase of technological effectiveness of installations.