| 摘要 |
The present invention relates to a gas liquefaction system to achieve the purpose of conveniently providing cold energy to liquefy a gas. The gas liquefaction system includes a gas delivery passageway, gas driving equipment and at least two pieces of gas liquefaction equipment that are arranged according to level. The gas driving equipment is configured to drive a gas to enter the gas liquefaction system from the gas inlet end. The gas liquefaction equipment is configured to liquefy the gas in the order of the levels. The gas liquefaction system further includes gasification equipment which is configured, when any arbitrary gas liquefaction equipment of the at least two pieces of gas liquefaction equipment is in need of cold energy for gas liquefaction, to exchange heat with the liquefied gas released from the liquefied gas storage tank that contains already liquefied gas and is associated with a gas liquefaction equipment which is at a level higher than or equal to the level of the arbitrary gas liquefaction equipment, thereby gasifying the liquefied gas released from the liquefied gas storage tank. The gas liquefaction system further includes a cold energy pipeline configured to deliver the cold energy generated by gasification to the arbitrary gas liquefaction equipment, so that the arbitrary gas liquefaction equipment receives the cold energy to exchange the heat generated during gas compression. In addition, the present invention also relates to a gas liquefaction method. |
| 主权项 |
1. A gas liquefaction system, comprising: a gas delivery passageway, gas driving equipment and at least two pieces of gas liquefaction equipment that are arranged at different levels, wherein the gas driving equipment is arranged at a gas inlet end of the gas delivery passageway, the gas delivery passageway is communicated with gas inlet ends of the at least two pieces of gas liquefaction equipment, and each of the at least two pieces of gas liquefaction equipment is provided with a liquefied gas storage tank respectively;
wherein the gas driving equipment is configured to drive a gas to enter the gas liquefaction system from the gas inlet end of the gas delivery passageway; wherein the at least two pieces of gas liquefaction equipment that are arranged at different levels are configured to liquefy the gas that enters the gas liquefaction system from a gas inlet end of the gas liquefaction equipment in an order of the levels, wherein the liquefied gas obtained by liquefaction enters liquefied gas storage tanks that are configured for the gas liquefaction equipment; and the gas liquefaction system further comprising: gasification equipment, configured to, when any arbitrary gas liquefaction equipment of the at least two pieces of gas liquefaction equipment is in need of cold energy for gas liquefaction, exchange heat with the liquefied gas released from a liquefied gas storage tank, the liquefied gas storage tank containing already liquefied gas and being associated with any gas liquefaction equipment which is at a level higher than or equal to the level of the arbitrary gas liquefaction equipment, thereby gasifying the liquefied gas released from the liquefied gas storage tank; and a cold energy pipeline, which is configured to deliver the cold energy generated by gasification to the arbitrary gas liquefaction equipment, so that the arbitrary gas liquefaction equipment receives the cold energy to exchange the heat generated during gas compression, such that the gas in the arbitrary gas liquefaction equipment reaches or drops below a critical temperature for the liquefaction of the gas through the heat exchange and is therefore liquefied, and the liquefied gas obtained by liquefaction enters the liquefied gas storage tank associated with the arbitrary gas liquefaction equipment. |
