Natural gas liquifying treatment device and method
A technology for liquefaction processing and natural gas, which is applied in liquefaction, cold treatment separation, refrigeration and liquefaction, and can solve problems affecting the output and production efficiency of liquefied natural gas
Inactive Publication Date: 2017-06-13
重庆耐德能源装备集成有限公司
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Problems solved by technology
Therefore, it greatly affects the output and production efficiency of LNG
Method used
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Embodiment 1
[0072] The structural schematic diagram of the natural gas liquefaction treatment device provided in Example 1 is as follows: figure 2 As shown, 1 is a heavy hydrocarbon separation device, 2 is a heavy hydrocarbon separation tank, 3 is a heavy hydrocarbon separation tank feed port, 4 is a gas phase discharge port, 5 is a liquid phase outlet, 6 is a first valve, 7 is Natural gas feed pipeline, 8 is the de-hydrocarbon natural gas discharge pipeline, 9 is the first heat exchange device, 10 is the inlet of the compression device, 11 is the compression device, 12 is the outlet of the compression device, and 13 is the natural gas liquefaction pipe Road, 14 is the second heat exchange device, 15 is the third heat exchange device, 16 is the fourth heat exchange device, 17 is the first ejector device, 18 is the refrigeration device, and 19 is the feed port of the first LNG separator tank , 20 is the first LNG separator tank, 21 is the LNG outlet of the first LNG separator tank, 22 is t...
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The invention provides a natural gas liquifying treatment device and method. The natural gas liquifying treatment device comprises a heavy hydrocarbon separating device, a compression device, a natural gas liquifying pipeline sequentially provided with a second heat exchange device, a third heat exchange device, a fourth heat exchange device and a first injection device, a first liquefied natural gas separating tank, a first cool air circulation pipeline and a second cool air circulation pipeline communicated with the first cool air circulation pipeline and a hydrocarbon-removed natural gas discharging pipeline. By adopting the technical scheme, the natural gas liquifying treatment device sequentially conducts heavy hydrocarbon separation, compression, heat exchange and high-pressure injection and throttling to obtain liquefied natural gas. The liquifying treatment device is provided by in-depth study on the frozen-blocking problem existing in a high-pressure injection refrigeration process, heavy hydrocarbon removal can be achieved by effectively utilizing circulating cold air in the natural gas liquifying process on the basis that liquefied natural gas production is not affected, accordingly frozen blocking is avoided, and the production efficiency of a liquifying process is remarkably improved.
Description
Technical field [0001] The invention relates to the technical field of energy and chemical industry, and more specifically, to a natural gas liquefaction treatment device and method. Background technique [0002] Natural gas is a combustible gas produced naturally in a gas field, mainly composed of methane. LNG (Liquefied Natural Gas) cools gaseous natural gas under normal pressure to condense it into liquid. As natural gas is liquefied, storage and transportation space can be greatly saved, and it has the characteristics of large heating value and high performance. The production of LNG has been widely used by people. s concern. [0003] In the prior art, there are many kinds of natural gas liquefaction processes, such as mixed refrigeration process, high-pressure jet refrigeration process, etc. Among them, the high-pressure jet refrigeration process has the characteristics of high output and good efficiency, and thus has a good application prospect. At present, the high-pressur...
Claims
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IPC IPC(8): F25J1/02
CPCF25J1/0201F25J1/0262F25J2210/60
Inventor 何跃军王良波陈全明邓小军
Owner 重庆耐德能源装备集成有限公司