| 摘要 |
The invention relates to gas industry, cryogenic engineering, and can be used at operation of gas-distribution systems, terminals of liquefied gases, installations of re-gasification – liquefaction of cryogenic gases. A method for change of density of cryogenic gases is realized in even cycles of re-gasification and liquefaction at stable modes of processes for all cryogenic agents simultaneously for two cryo-agents difference of critical temperatures of which does not exceed 60K. The target liquefied cryo-agent is re-gasified at delivery point with decrease of density and delivery to consumer at simultaneous accumulation of cold that is liberated with gaseous buffer cryo-agent with increase of density to liquid state in one of processes of even cycle of implementation, liquefied buffer cryo-agent is transported to point of dispatch of the target cryo-agent, with re-gasification of buffer cryo-agent with decrease of density and delivery to consumer or through discharge to atmosphere at simultaneous accumulation of cold that is liberated with new portion of target cryo-agent with increase of density tom liquefaction in the second process of even cycle of implementation, with transportation of target cryo-agent to delivery point. Renewal of volumes of discharged gases is performed with refill from outside, and the processes of re-gasification and liquefaction are carried out in periodically repeated cycles. The invention makes it possible to increase energy effectiveness at use of discharge utilized low-temperature cold and promotes simplification of processes of change of density of cryogenic gases. |
