Skid-mounted small and medium-sized light hydrocarbon extraction system by using secondary refrigeration of vortex tube

The technology of extraction system and vortex tube is applied in the system field of vortex tube refrigeration and extraction of light hydrocarbons, which can solve the problems of equipment investment and operation cost increase, and achieve the effects of low manufacturing cost, convenient maintenance, and reduction of investment and operation cost.

Active Publication Date: 2011-11-02
HANGZHOU YUEQIANG LOW TEMPERATURE MACHINE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The refrigeration temperature is inversely proportional to the extraction rate of light hydrocarbons. The refrigeration temperature of the one-stage compression vapor refrigeration system can reach about -35°C. If a lower temperature is required, the two-stage compression must be used, but this will bring equipment investment and operation. cost increase

Method used

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  • Skid-mounted small and medium-sized light hydrocarbon extraction system by using secondary refrigeration of vortex tube
  • Skid-mounted small and medium-sized light hydrocarbon extraction system by using secondary refrigeration of vortex tube
  • Skid-mounted small and medium-sized light hydrocarbon extraction system by using secondary refrigeration of vortex tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Considering the limited and scattered reserves of gas wells and oil wells, the devices configured in this system (between the light hydrocarbon extraction module, the steam refrigeration cycle module and the vortex tube refrigeration module) are connected by hoses and flanges, (see figure 2 shown) for easy installation and removal.

[0065] All adopt skid-mounted design.

[0066] see figure 1 As shown, the raw material gas enters the light hydrocarbon extraction device at normal temperature and low pressure, and first enters the imported centrifugal separator 101 to separate oil, water and mechanical impurities. The purified raw gas enters the primary compression section 102- of the raw gas compressor 102 1. One-stage compression is carried out, and the boosted raw material gas is cooled to below 40°C by the first cooler 103, and then the liquid phase is removed by the liquid separation tank 105, and then enters the drying tower 106 for deep dehydration to below 10PPm...

Embodiment 2

[0069] The difference from Example 1 is that when the feed gas contains sulfur components, the feed gas first enters the dry desulfurizer for desulfurization and then enters the inlet centrifugal separator, and the dry gas at the hot end of the vortex tube is used as the regeneration gas source for the dry desulfurizer.

Embodiment 3

[0071] The difference from Example 1 is: when the raw gas source is unstable, a raw gas stabilized pressure storage tank is added before the inlet centrifugal separator.

[0072] According to the present invention, according to the natural conditions of the device implementation occasion, the coolant used for some cooling devices of the system can be selected from air, water and natural gas with considerable cooling capacity.

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Abstract

The invention discloses a skid-mounted small and medium-sized light hydrocarbon extraction system by using a secondary refrigeration of a vortex tube. The invention is characterized in that the system is composed of a light hydrocarbon extraction module, a steam refrigeration cyclic module and a vortex tube refrigeration module by a braid connection; an inlet centrifugation separator of the lighthydrocarbon extraction module is successively connected with a raw material gas compressor one-stage compression section, a first cooler, a liquid separation tank, drying towers, a raw material gas compressor two-stage compression section, a stabilizer, a second cooler, a first heat exchanger, an evaporator, a second heat exchanger, a low temperature separator and a stabilizer through pipes; a refrigeration compressor of the steam refrigeration cyclic module is successively connected with a condenser, a throttle valve and the evaporator through pipes, then returned to the refrigeration compressor for compositing a cycle; the vortex tube refrigeration module comprises the vortex tube and a heat valve block. According to the invention, the one-stage compression steam refrigeration and the vortex tube refrigeration (the secondary refrigeration) enable the device to obtain a higher light hydrocarbon recovery rate without increasing energy consumption.

Description

technical field [0001] The invention belongs to the technical field of refrigeration and low temperature, in particular to a system for extracting light hydrocarbons by using vortex tube refrigeration. Background technique [0002] Light hydrocarbon products are chemical raw materials with a wide range of uses. Further processing can produce a variety of products such as solvent oils, foaming agents, aerosols, and desorbents. Currently, the supply of light hydrocarbon products is in short supply in the market; Very small clean fuels are widely used as industrial fuels, civil fuels, and LPG vehicle fuels. They are clean fuels vigorously promoted by the country, showing a trend of increasing year by year, and the demand will increase. [0003] One of the most important methods is to extract light hydrocarbon products from natural gas (petroleum associated gas) by refrigeration. At present, the most commonly used refrigeration technologies are turboexpander expansion refrigera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G5/06
Inventor 林明峰徐立俊颜月强
Owner HANGZHOU YUEQIANG LOW TEMPERATURE MACHINE EQUIP
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