Methane-propane united liquefaction and gasification device

A liquefaction device, propane technology, applied in the directions of liquefaction, refrigeration and liquefaction, equipment loaded into pressure vessels, etc., can solve the problems of low boiling point of methane and complex liquefaction process, so as to improve the liquefaction temperature, improve the storage and transportation temperature, reduce the The effect of cooling energy consumption

CN106949375AInactive Publication Date: 2017-07-14CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2017-07-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a methane-propane united liquefaction and gasification device. A methane-propane united liquefaction device is mainly composed of a dehydration module, a purification module, a propane supply module, a gas mixture, a refrigeration module and a liquefied gas production storage tank. A methane-propane united gasification device is mainly composed of a liquefied gas user storage tank, a gasifier, a gas-liquid separator and a propane unloading pump. According to the methane-propane united liquefaction and gasification device, a natural gas raw material and the propane are mixed at a certain ratio and then are jointly liquefied, and the liquefaction temperature of natural gas is raised; and in this way, the energy consumption of the liquefaction process is reduced, the low-temperature resistance requirement for equipment materials is lowered, and storage and transportation can be more economical and safer.
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Description

technical field

[0001] The invention belongs to the technical field of liquefied natural gas production, and in particular relates to a methane-propane combined liquefaction and vaporization device. Background technique

[0002] With the maturity of natural gas development technology, its consumption has gradually increased. Due to the uneven distribution of resources, it has driven the development of the liquefied natural gas industry. Liquefied natural gas is to use refrigeration technology to lower the temperature of natural gas after purification (dehydration, heavy hydrocarbon removal, and acid gas removal), and then turn it into liquid after cooling to its boiling point (-162°C). Usually, liquefied natural gas is stored at -162°C , 0.1MPa or so in a low-temperature storage tank. Its main component is methane, transported by special ships or tank trucks, and re-gasified when used.

[0003] Propane is the main component of liquefied petroleum gas and an important indus...

Examples

Embodiment Construction

[0018] Such as figure 1 As shown, a methane-propane combined liquefaction device mainly includes: dehydration module 1, purification module 2, propane supply module 3, gas mixer 4, refrigeration module 5, liquefied gas production storage tank 6, dehydration module 1, purification module 2 1. The gas mixer 4 is connected sequentially through pipelines, the propane supply module 3 is also connected with the gas mixer 4 through pipelines, the outlet of the gas mixer 4 is connected with the refrigeration module 5 through pipelines, and the outlet of the refrigeration module 5 is connected with the inlet of the liquefied gas production storage tank 6 connected.

[0019] A methane-propane combined vaporization device, mainly including: liquefied gas user storage tank 11, vaporizer 12, gas-liquid separator 13 and propane unloading pump 14, liquefied gas user storage tank 11, vaporizer 12, gas-liquid separator 13 through pipelines Connected in sequence, the top of the gas-liquid sepa...