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Multifunctional intelligent scattered natural gas recovery device and method thereof

A recovery device, natural gas technology, applied in the direction of container filling method, container discharge method, fixed capacity gas storage tank, etc., can solve the problem of low utilization rate, and achieve the effect of low cost, small quantity, and small compression ratio

Inactive Publication Date: 2015-11-25
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a multifunctional natural gas scattered gas intelligent recovery device and method for the above-mentioned low utilization rate of scattered gas and the deficiency of scattered gas recovery technology to effectively recover natural gas from scattered gas sources

Method used

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  • Multifunctional intelligent scattered natural gas recovery device and method thereof
  • Multifunctional intelligent scattered natural gas recovery device and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Take a small natural gas well with a methane content of less than 80% as an example (wellhead outlet gas pressure is 1.0MPa, temperature is 20°C).

[0067] When in application, connect the device to the general interface with the reserved valve on the gas well release pipe section; open the device, open the main valve, and the online chromatographic detector will analyze the composition of the intake air, and judge that the gas does not meet the storage requirements of the adsorption storage tank, and switch the system Compressed gas storage solution.

[0068] Since the intake pressure is lower than the minimum gas storage pressure of 3.5MPa, the automatic control system turns on the compressor E1, and the natural gas is boosted to 4.0MPa by the compressor E1, and first passes through the pre-adsorption tank E2 to remove some impurities, such as propane, butane, carbon dioxide, Hydrogen sulfide and water, etc., enter the compressed storage tank E3 to complete the gas st...

Embodiment 2

[0070] Take a section of high-pressure gas transmission pipeline (diameter about 1000mm, pressure 1.6MPa, temperature 20°C) with a methane content of more than 90% to be overhauled as an example.

[0071] When in application, connect the device to the general interface with the reserved valve on the release pipe section of the gas well; open the device, open the main valve, and the online chromatographic detector will analyze the composition of the intake air to determine that the gas meets the storage requirements of the adsorption storage tank, and the system will switch the adsorption Gas storage scheme.

[0072] Since the intake pressure is lower than the minimum gas storage pressure of 3.5MPa, the automatic control system turns on the compressor E1, and the natural gas is boosted to 4.0MPa by the compressor E1, and first passes through the pre-adsorption tank E2 to remove some impurities, such as propane, butane, carbon dioxide, Hydrogen sulfide and water, etc., enter the...

Embodiment 3

[0075] see figure 1 , this embodiment is the same as the device of embodiment 1. The difference between this embodiment and Embodiment 1 is that this embodiment is an example during the operation of the transport vehicle where the device is located.

[0076] During the driving process of the transport vehicle, LNG flows out of the LNG fuel tank E9, passes through the plate heat exchanger and the refrigerant for heat exchange and vaporization, and then is heated by the heater E11 until it is completely vaporized and reaches the intake air temperature requirement of the engine E12, and then enters the engine E12 . When there is natural gas stored in the compression storage tank E3 or adsorption storage tank E4, the system automatically uses part of the natural gas in the compressed storage tank E3 or adsorption storage tank E4 during driving, and the natural gas in the storage tank is regulated by the second pressure regulating valve V14. After being compressed, it is mixed wi...

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Abstract

The invention discloses a multifunctional intelligent scattered natural gas recovery device and a method thereof. The device comprises a detection system, a recovery system, a power system and a temperature control system. All equipment of the device is arranged on a recovery vehicle in a skid-mounted manner. When pipe network diffused gas, scattered field gas and oil field diffused gas are recovered, universal connectors on the recovery vehicle are in butt joint with reserved valves on original diffusion pipelines for recovery of natural gas. According to the recovery process, automatic switchover of recovery procedures under different gas matter composition conditions is achieved through detection and automatic control systems. According to the device and the process method, natural gas in multiple scattered gas sources can be effectively recovered, the influences of the greenhouse effect generated by diffused gas of the natural gas are fully reduced, energy is effectively saved, and good economic benefits are achieved. The process procedures are safe, simple, high in automatic control degree and simple in operation; and the device is started and stopped immediately, natural gas recovery points in different places can be flexibly moved, and wide application prospects and development potential are achieved.

Description

technical field [0001] The invention belongs to the field of natural gas scattered gas recovery, and in particular relates to a multifunctional natural gas scattered gas intelligent recovery device and a method thereof. Background technique [0002] As a clean energy among fossil fuels, natural gas plays an increasingly important role in the adjustment process of my country's energy structure. my country's city gas has entered a period of sustained and rapid development. my country has abundant natural gas reserves, and domestic large-scale gas source mining and utilization technologies are quite mature, but a large number of scattered gas sources, such as small gas wells and biogas digesters, lack available mining and recovery technologies. In addition, with the vigorous development of urban pipeline natural gas, the problem of natural gas release during the construction, operation and maintenance of the gas pipeline network has also attracted much attention, especially the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C5/06F17C7/00F17C11/00F17C13/00F17D1/02F17D3/01
Inventor 徐文东郑境森李夏喜邢琳琳钱迪秦臻熊凡凡
Owner SOUTH CHINA UNIV OF TECH
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