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Natural gas pressure difference energy recovery process

A technology of energy recovery and energy recovery devices, applied in gas/liquid distribution and storage, machines/engines, pipeline systems, etc., can solve problems such as not being recycled, loss of pressure energy difference, and no solution proposed

Inactive Publication Date: 2011-01-12
王飙
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In this process, the pressure energy difference between the high-pressure natural gas and the low-pressure natural gas is lost in vain instead of being recovered.
At present, it is a common phenomenon that the pressure difference between the main line and the branch line of the natural gas transmission pipeline has not been recovered and utilized, resulting in huge waste of energy and high overall operating costs
Currently, there is no proposed solution to this problem

Method used

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  • Natural gas pressure difference energy recovery process
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Embodiment Construction

[0009] The process for recovering natural gas pressure difference energy involved in the present invention will be described below in conjunction with the accompanying drawings.

[0010] The process for recovery of natural gas pressure difference energy involved in the present invention is composed of a high-pressure natural gas main line 1 , a low-pressure natural gas branch line 3 , a pressure difference energy recovery device 4 and a recovery energy utilization device 6 . This process is to install the process pipeline proposed by the present invention in parallel next to the existing pressure regulating device 2 (connecting the high-pressure natural gas trunk line 1 and the low-pressure natural gas branch line 3 for pressure regulation, and the device has no energy recovery function), and the pressure difference energy recovery device 4 and a utilization device 6 for recovering energy. When the process of natural gas pressure difference energy recovery is used, the pressur...

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Abstract

The invention relates to a natural gas energy recovery process by use of pressure difference (ranging from 0.4MPa to 25MPa) between a main line and a branch line between a natural gas delivery main line pipe and a branch line pipe. By adopting the process, pressure difference energy can be recovered, and natural gas getting in and out of processing equipment conforms to the existing pressure requirement for natural gas delivery. The natural gas pressure difference energy recovery process can be used in two ways as follows: power is utilized for power generation, that is, the gas pressure energy is converted into mechanical energy and output for applying work by a direct mode; and the gas with pressure is expanded by virtue of pressure energy and refrigerated to produce liquefied natural gas.

Description

Technical field [0001] The invention relates to a process for recovering natural gas energy by using the pressure difference between the main line and the branch pipeline of the natural gas transmission (the pressure difference varies from 0.4MPa to 25MPa). Background technique [0002] Natural gas pipeline is currently the most important means of transporting natural gas in the process of natural gas application. The gas transmission and supply process between the traditional high-pressure natural gas main line and the low-pressure natural gas branch line is as follows: the high-pressure natural gas enters the pressure regulating device through the high-pressure natural gas main line for throttling pressure adjustment, and the high-pressure natural gas is reduced into low-pressure natural gas. When the pressure meets the low-pressure natural gas branch line When required by the natural gas pressure transmission process, the natural gas enters the low-pressure natural gas br...

Claims

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Application Information

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IPC IPC(8): F17D1/075F01D15/10
Inventor 王飙毛羽
Owner 王飙
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