Liquefied hydrocarbon storage tank replacement and gas recovery device and method and application thereof

Abstract

The invention relates to the technical field of storage tank replacement and gas recovery, in particular to a liquefied hydrocarbon storage tank replacement and gas recovery device, and a method and an application thereof. The device comprises a liquefied hydrocarbon storage tank to be detected, a liquefied hydrocarbon storage tank, a liquefied hydrocarbon gasification separator, and a liquefied hydrocarbon compressor; one end of the liquefied hydrocarbon compressor is connected with a compressor inlet buffer tank, and the other end is connected with a compressor outlet buffer tank; the tops of the liquefied hydrocarbon storage tank to be detected and the liquefied hydrocarbon storage tank are connected with the compressor inlet buffer tank; the bottoms of the liquefied hydrocarbon storage tank to be detected and the liquefied hydrocarbon storage tank are connected with the liquefied hydrocarbon gasification separator; and the compressor outlet buffer tank is respectively connected with the liquefied hydrocarbon storage tank to be detected and the liquefied hydrocarbon storage tank. Through reasonable design of a connection relationship among the liquefied hydrocarbon storage tank to be detected, the liquefied hydrocarbon storage tank, the liquefied hydrocarbon gasification separator and the liquefied hydrocarbon compressor, liquid phase, gas phase and residual liquid phase transfer of hydrocarbon substances are fully completed. And by arranging a water injection port, liquefied hydrocarbon is prevented from flowing out when accidental leakage occurs.

Description

technical field [0001] The invention relates to the technical field of storage tank replacement gas recovery, in particular to a liquefied hydrocarbon storage tank replacement gas recovery device and a method and application thereof. Background technique [0002] The information disclosed in this Background section is only for enhancement of understanding of the general background of the invention and should not necessarily be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. [0003] Liquefied hydrocarbon is one of the basic raw materials of petrochemical industry, which can be used to produce a variety of important organic chemical raw materials, such as liquefied hydrocarbon nitrile, propylene oxide, cumene, butanol, octanol, etc. Since liquefied hydrocarbons are basic raw materials, general chemical companies directly reprocess commercially available liquefied hydrocarbo...

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Problems solved by technology

However, the inventor found that improper operation of the water ejection displacement method will cause a large amount of water to enter the adjacent spherical tank, which will affect production; the direct discharge method will...

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