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Natural gas hydrate preparation system based on compressed gas refrigeration cycle

A technology of refrigeration cycle and compressed gas is applied in the field of natural gas hydrate preparation system, which can solve the problems of immature NGH synthesis technology and incapability of commercial application, and achieve the effects of continuous preparation, complete hydration reaction and increase of production speed.

Inactive Publication Date: 2014-08-20
UNIV OF SHANGHAI FOR SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The domestic NGH synthesis technology is still very immature, and there are still many technical problems to be solved, making it impossible for commercial application

Method used

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  • Natural gas hydrate preparation system based on compressed gas refrigeration cycle
  • Natural gas hydrate preparation system based on compressed gas refrigeration cycle

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Embodiment

[0022] figure 1 It is the structural block diagram of the natural gas hydrate preparation system.

[0023] like figure 1 As shown, the natural gas hydrate preparation system 10 includes a gas supply device 11 , a refrigeration cycle device 12 and a natural gas hydrate preparation device 13 .

[0024] figure 2 It is a schematic diagram of the structure of the natural gas hydrate preparation system.

[0025] The gas supply device 11 is used to provide the required natural gas for the hydration reaction. like figure 2 As shown, the gas supply device 11 includes a natural gas cylinder 14 and a valve 15 . The valve 15 is connected with the gas outlet of the natural gas cylinder 14 .

[0026] The refrigeration cycle device 12 is used to cool the natural gas and drive the flow of the natural gas. like figure 1 , 2 As shown, the refrigeration cycle device 12 includes a dryer 16 , a compressor 17 , a cooler 18 , and an expander 19 .

[0027] The inlet port of the drier 16 i...

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Abstract

The invention provides a natural gas hydrate preparation system based on compressed gas refrigeration cycle, which is characterized by comprising a gas supply unit for supplying natural gas required by hydration reaction, a refrigeration cycle device which is communicated with the gas supply unit and used for cooling the natural gas and driving the natural gas to flow, and a natural gas hydrate preparation device which is connected with the refrigeration cycle device and used for preparing and storing the natural gas hydrate, wherein the refrigeration cycle device comprises a dryer, a compressor, a cooler and an expander; the inlet end of the dryer is communicated with the outlet end of the gas supply unit, and the dryer is used for drying the natural gas; the inlet end of the compressor is communicated with the outlet end of the dryer, and the compressor is used for sucking the natural gas and compressing the natural gas; the inlet end of the cooler is communicated with the outlet end of the compressor, and the cooler is used for cooling the natural gas; and the inlet end of the expander is communicated with the outlet end of the cooler, the outlet end of the expander is communicated with the natural gas hydrate preparation device, and the expander is used for expanding the natural gas to obtain low-temperature natural gas and sending the low-temperature natural gas into the natural gas hydrate preparation device. The compressor is connected with the expander through a coupling, and can recover expansion work to enhance the work applying efficiency of the system.

Description

technical field [0001] The invention relates to a natural gas hydrate preparation system, in particular to a natural gas hydrate preparation system using a compressed gas refrigeration cycle. Background technique [0002] In recent years, research on natural gas hydrates at home and abroad has shown that the solid-state transportation of natural gas with hydrates has a good development prospect. This is mainly reflected in: 1. The energy storage density is high. According to reports, 1m 3 The natural gas hydrate (NGH) can carry 150~180m in standard state 3 2. The preparation technology is simple, NGH can be prepared under 6MPa and -10-10°C, and compared with liquefied natural gas (LNG), it avoids the link of ultra-low temperature preparation; 3. The thermophysical properties of hydrate are relatively stable , storage safety, experiments found that NGH can be stored stably without decomposition at normal pressure, -1~-18°C; 4. NGH can be effectively regasified, and there ar...

Claims

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Application Information

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IPC IPC(8): C10L3/10B01J10/00B01F13/02B01F33/40
Inventor 谢应明高红丽周兴法方亚军闫琳张明威
Owner UNIV OF SHANGHAI FOR SCI & TECH
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