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Compression system for recovering associated gas and method for compressing gas using the compression system

A compression system and associated gas technology, applied in liquefaction, solidification, lighting and heating equipment, etc., can solve the problems of high cost and long production cycle, and achieve the effect of low cost, small space occupation and enhanced stability

Active Publication Date: 2016-09-28
马中华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first purpose of the present invention is to provide a compression system for recovery of associated gas, to solve the problem of existing oil-free piston compressors or oil-bearing screw compressors, which are generally customized according to the components and volume of associated gas. The cost is high, the production cycle generally takes two to three months, and the technical problem of the long production cycle

Method used

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  • Compression system for recovering associated gas and method for compressing gas using the compression system
  • Compression system for recovering associated gas and method for compressing gas using the compression system

Examples

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Embodiment 1

[0044] see figure 1 , this embodiment provides a compression system for recovery of associated gas, including a primary compression device, an oil separator I27, a heat exchanger I28, a gas-liquid separator I29, a secondary compression device, an oil separator II44, and a heat exchanger II45 , gas-liquid separator II46 and an oil return device that can automatically replenish oil for the first-stage compression device and the second-stage compression device, the first-stage compression device, the oil separator I27, and the heat exchanger I28 , the gas-liquid separator I29, the secondary compression device, the oil separator II44, the heat exchanger II45 and the gas-liquid separator II46 are connected in sequence, and the oil return device is respectively connected to the oil The separator I27, the oil separator II44, the primary compression device, and the secondary compression device are connected.

[0045] Further, the primary compression device includes at least two compr...

Embodiment 2

[0063] see figure 2 , this embodiment provides a compression system for associated gas recovery, the difference between this embodiment and Embodiment 1 is:

[0064]The oil return device includes an oil storage barrel 52 and an oil cooler 51, the oil storage barrel 52 is respectively connected with the oil separator I27, the oil separator II44, and the oil cooler 51, and the oil cooling The device 51 is connected with the compressor I23 and the compressor II43, the oil separator I27 is provided with a float valve I, the oil separator II44 is provided with a float valve II, the compressor I23 and the The compressor II43 is provided with an oil return float valve respectively.

[0065] Further, the oil storage barrel 52 is provided with a pressure relief valve 33 . Setting the pressure relief valve 33 on the oil storage tank 52 can prevent the pressure in the oil storage tank 52 from being too high, causing the oil in the oil separator I27 and oil separator II44 to be unable ...

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Abstract

The invention provides a compression system for associated gas recycling and a method for compressing gas with the compression system. The compression system for associated gas recycling comprises a first-stage compression device, a first oil separating device, a first heat exchanger, a first gas-liquid separating device, a second-stage compression device, a second oil separating device, a second heat exchanger, a second gas-liquid separating device and an oil return device capable of automatically supplementing oil to the first-stage compression device and the second-stage compression device; the first-stage compression device, the first oil separating device, the first heat exchanger, the first gas-liquid separating device, the second-stage compression device, the second oil separating device, the second heat exchanger and the second gas-liquid separating device are sequentially connected; and the oil return device is connected with the first oil separating device, the second oil separating device, the first-stage compression device and the second-stage compression device. According to the compression system for associated gas recycling, a compressor can be a full-closed type compressor or a semi-closed type compressor which can be directly purchased on the market, customization is not needed, the production period of associated gas recycling equipment can be greatly shortened, and the cost is lower.

Description

technical field [0001] The invention relates to the technical field of recovery of associated gas, in particular to a compression system for recovery of associated gas and a method for compressing gas using the compression system. Background technique [0002] Associated gas, also called oilfield gas, is a flammable gas mixture that accompanies crude oil spillage during oil extraction, and its components are usually methane, ethane, propane, butane, etc. Because it contains a lot of light hydrocarbons, it is usually necessary to recover the light hydrocarbons of C3+ for environmental protection and economic considerations. The recovered light hydrocarbons are called mixed hydrocarbons or natural gas liquids (NGL). [0003] The traditional way to recover NGL from oilfield associated gas is to build a light hydrocarbon processing plant. The light hydrocarbon processing plant uses complex devices, large equipment, slow plant construction speed, and is not easy to relocate. How...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25J3/00
Inventor 刘建强
Owner 马中华
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