SU601535A1 - Device for low-temperature treatment of natural gas - Google Patents

Description

the first stage, and (vtonomnyy inlet manifold 3, behind which is located the heat exchanger 4 is pre-cooled and, the turbo expander 5, at the exit ais of which the second stage ostarp is located.

Low-voltage circuit includes wells 7, separators 8 of the first stage, aiBTOHOM INPUT collector 9, behind which there is a warm; os; bme: -1nik 10 pre-cooling, evaporator // steam-compression chiller that is connected to the inlet to the pre-cooling heat exchanger 10 of the low contour contour, and the EXIT to the second stage separator 12 of the same contour.

In the steam compressor chiller, the DIT also compressor 13, condenser 14, throttle 1.5.

System: cooling the condenser 14 includes devices 6 and 17 for injecting hydrocarbon condensate and choke M mounted on the condensate line / P.

Production manifold 20 combines high-pressure low-pressure gas flows.

In the high-pressure circuit, gas from well 1 Admits to the separators 2 of the first stage, and then to the inlet manifold 3. From the inlet manifold 3, the gas is directed to the recuperative, heat-exchanging 4 of the preliminary cooling, where the pattern of the 1 M flow is cooled, and from it into the turboexpander 5, at the exit from which the required temperature is reached. after the tour | baddeander 5 enters the separator 6 of the Second Stage, which separates the condensate. Purified gas Passes: to the stream flow of the heat exchanger 4 and fed to the field manifold 20.

In the “isoconpressor circuit, the gas, from the wells 7, has passed through the first stage separators 8, the inlet manifold 9, enters the direct flow of the recirculation system through the heat exchanger 10 and preliminary cooling, and then into the evaporator 11 of the steam-cooling chiller, where it is cooled to the required separation temperature. The gas cleaned from the hydrocarbon condensate in the separator 12 of the second stage is fed to the return flow of the heat exchanger 10 and then to the field collector 20.

The refrigerant from the evaporator 11 of the vapor-compression refrigerating machine enters the inlet of the compressor 13, driven by the turbine expander 5. After compression: in the compressor 13, the refrigerant is directed to the condenser 14. The refrigerant liquefied in the condenser 14 through the throttle 16 - IB exits the IB condenser // vapor-compressioin cooling machine . The cooling system of the condenser 14 operates as follows. Hydrocarbon condensate from separators 2 of the first stage BbicoKOHainopHoro contour and separators 8 of the first low-pore souvenir using devices 16 and 17 of injection of carbon-hydrogen condensate is fed respectively to the evaporator 11 of the steam-micherio-cooler cooling mash and turbo detaidera 5. This increases the additional condensate output. separators 6 of the second stage of high-pressure one and sep arator 12 of the second stage of low-pressure contours. From the separators 6 Second stage high-bore and separators 12 | The second stage of the low-vapor contour in condensate prop. 19 hydrocarbon condensate through re. 18 enters the cooling of the refrigerant in the condenser 14. Additional cold is obtained due to the degassing of the hydrocarbon con, after throttling in a choke 18. Stabilized hydrocarbon condensate is recycled.

The introduction in the gas industry of a low-temperature natural gas snearasching plant with a capacity of 2 billion. nn 15 days gives the opportunity to reduce operating costs by reducing the energy consumption for gas treatment in the amount of 30 thousand. rubles, and additional gas production in this way has an effect of 70 thousand rubles.

Form m u l a and 3 o b e e e u u

An installation for low-temperature natural gas processing, C0 | holding independent collectors connected to high-low wells through first-stage separators and high-low-low contours direct flow lines; a turbo-expander mounted in a high-pressure circuit, characterized in that, in order to increase the gas treatment efficiency, the installation 1 is equipped with a steam compressor refrigeration machine 1, the compressor of which nematicheoki associated with turbo expander, an evaporator inlet connected to the heat exchanger prior OHL .azhdeni low pressure circuit, -a output - to the separator of the second stage of the same circuit and a capacitor connected to the first and second separators stuneni vgsoko- and low pressure circuits.

Sources of information taken into account in the examination:

1. USSR author's certificate No. 4i6; 12 & l, cl. F 28 B 11/00, 1972.

2. Authors sv.dedelstvo USSR, Vo 480889, cl. F 25 B 11/00, 1973.

0 ys &

4 G

- /

irf, Id

20

P

/

J

L

one