Novel high-efficiency BOG recovery system with cold storage function

A recovery system, condensation recovery technology, applied in pipeline systems, container discharge methods, equipment loaded into pressure vessels, etc., can solve problems such as incomplete operation reliability, achieve good industrial promotion and market application prospects, reduce The effect of capital investment and simple process flow

Active Publication Date: 2015-04-01
溧阳德维透平机械有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, low-temperature oil-free reciprocating compressors are generally used. Domestic compressor manufacturers have no mature experience in designing and manufacturing such oil-free reciprocating compressors. They mainly rely on imports, and the statistical technical data and reliable operation of BOG compressor failure analysis Sexual information is not perfect

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  • Novel high-efficiency BOG recovery system with cold storage function
  • Novel high-efficiency BOG recovery system with cold storage function

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Embodiment Construction

[0014] The implementation of the present invention will be further described below in conjunction with the accompanying drawings and examples, but the implementation and protection of the present invention are not limited thereto.

[0015] This embodiment describes in detail a new type of BOG recovery process and device with high efficiency, low energy consumption and cold storage function. This BOG recovery system compresses the nitrogen from the nitrogen storage tank to obtain compressed nitrogen, and then flows through the cold storage tank (previously stored in the pre-cooling preparation stage) for cooling. After the temperature is lowered, it enters the expander for expansion, and then enters the The BOG condensation recovery device exchanges heat with the BOG gas to make it liquefied, then flows through another cold storage tank, and finally enters the nitrogen storage tank after the temperature rises.

[0016] Such as figure 1 As shown, the BOG recovery system of this...

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Abstract

The invention discloses a novel high-efficiency low-energy consumption boil off gas (BOG) recovery process with cold storage function, and a device thereof. The device comprises a LNG storage tank, a nitrogen storage tank, a compressor, a first cold storage tank, an expansion machine, a BOG condensation recovery device, and a second cold storage tank. According to the device, nitrogen from the nitrogen storage tank is subjected to compression so as to obtain compressed nitrogen; and the compressed nitrogen is delivered through one of the cold storage tanks (which is processed via cold storage at a precooling preparing stage) for cooling, is delivered into the expansion machine after temperature reducing, is delivered into the BOG condensation recovery device for heat exchange with BOG gas after further temperature reducing so as to liquify BOG gas, and then is delivered through the other cold storage tank, and at last is delivered into the nitrogen storage tank after temperature increasing. The novel high-efficiency low-energy consumption boil off gas (BOG) recovery process is simple in process flow; some professional devices are not necessary; automatic controlling is realized; nitrogen can be recycled; waste caused by nitrogen discharging is reduced; investment is reduced; and industrial popularization and market application prospect is promising.

Description

technical field [0001] The patent of the invention relates to technical fields such as LNG (liquefied natural gas) storage, transportation and use, and is a new and efficient device for industrial recovery of BOG. Background technique [0002] my country has abundant reserves of natural gas resources, and the demand growth is accelerating. Compared with gasoline and diesel, LNG, as a power fuel for automobiles and ships, has good safety, environmental protection, and economic advantages. Implementation Plan for Overall Promotion of Emission Reduction") is also a key advantageous industry supported by the central government and the Development and Reform Commission ("The Outline of the Twelfth Five-Year Plan for National Economic and Social Development of the People's Republic of China", "National Development and Reform Commission's Proposal on Accelerating the Construction of Gas Storage Facilities instructions"). The main component of LNG is methane, which is gaseous at n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C5/02F17C13/00F17D1/02
Inventor 陈伟凌祥刘冬稔李春晓
Owner 溧阳德维透平机械有限公司
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