SU1333996A1 - Installation for low-temperature treatment of natural gas - Google Patents

Abstract

The invention relates to refrigeration technology and allows for greater efficiency. The inlet of the separation tank 16 communicates through the second cavity of the cooler 11 with the lines 5,6, 7 of the condensate drain, and its output, with the drive 10 of the heater 9 to the field collector 15. With this design, the compressed gas is supplied to the forward branch of the recuperative heat exchanger 12 , is separated, and the hydrocarbon condensate is separated. The separated gas passes through the reverse branch of the recuperative heat exchanger 12 and, compressed to the collector pressure, is sent to the collector 15.1 sludge. (L 10 with 00 with with with

Description

The invention relates to refrigeration engineering, in particular to installations for the preparation of natural gas for transport.

The aim of the invention is to improve efficiency.

The drawing shows a diagram of the installation for low-temperature processing of natural gas.

tively, because the temperature of the condensate increases in the heat exchanger 11. Next, the stabilized condensate is recycled.

Obtained in the process of stabilizing gas degassing from the separation tank 16 enters the actuator 10.

During the period of high reservoir gas pressure the unit can operate

Installation contains; bore holes 1, separators 2 and 3, vortex separator 4, condensate drain lines 5-7, inlet manifold 8, supercharger 9, driven 10 turbine type, cooler is 11, recuperative heat exchanger 12, turbo-expander 13, compressor 14 , field collector 15, separation tank 16, gate valves 17-19.

The plant operates as follows: blower 9, while the valve 17 is open, valves 18 and 19 are closed.

Gas from well 1 enters the separators 2, and then into the inlet manifold 8, from where, with the valve 1-7 closed and the valves 18.19 open, it 25 enters the inlet of the supercharger 9, which rises the pressure-generating gas.

The gas compressed in the blower 9 is cooled in a gas-liquid heat exchanger 11 by a return stream of liquid hydrocarbons condensed during gas processing.

Compressed gas is fed directly. a regenerative heat exchanger branch 12, where it is cooled by reverse flow, and from it enters the vortex separator, where dispersed liquid separates from the gas flow under the action of centrifugal forces.

The purified gas is supplied to the turbine expander 13, at which point the desired separation temperature is reached, then enters the separator 3, in which the hydrocarbon condensate is separated.

Separated gas passes through the reverse branch of the recuperative

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Claims (1)

Invention Formula A natural gas low temperature treatment unit containing a gas circuit in which a driven compressor is included, a first cavity of a cooler, a regenerative 30 heat exchanger with forward and backward branches, an turbocharger and a compressor mounted on the same shaft, separators with condensate removal lines, one of which is located in front of the supercharger, and the other two, respectively, before and after the turbo-expander, and the field collector, so that, in order to improve efficiency ,. the inlet compressor is connected to the return branch of the recuperative heat exchanger and to the field manifold at the outlet, the installation further comprises a separation tank, the inlet of which is connected through the second cavity of the cooler to the condensate removal lines from the separators, and its outputs are connected to the compressor drive and the field collector . 40 45 the heat exchanger 12 and, compressed to the manifold pressure in the compressor 14, Compiled by A. Fedotov Editor M. Tsitkina Tehred V. Kadar Proofreader G. Reshetnik Order 3951/38 Circulation 475 Subscription VNESHPI USSR State Committee for inventions and discoveries 113033, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 sent to field reservoir 15. Hydrocarbon condensate from the separators 2, 3 and 4 is directed to the gas-liquid heat exchanger 11, cools the gas flow heated in the compressor 9, then goes to the separation tank 16, while the process of separation and stabilization is more efficient, since the temperature of the condensate increases in the heat exchanger 11. Next, the stabilized condensate is recycled. Obtained in the process of stabilizing gas degassing from the separation tank 16 enters the actuator 10. During the period of high reservoir gas pressure the unit can operate five five Invention Formula A natural gas low temperature treatment unit containing a gas circuit in which a powered blower, the first cavity of a cooler, a recuperative 0 heat exchanger with direct and reverse branches, an turbocharger and compressor mounted on the same shaft, separators with condensate removal lines, one of which is located in front of the supercharger, and the other two, respectively, before and after the turbo-expander, and the field collector, so that, in order to improve efficiency ,. the inlet compressor is connected to the return branch of the recuperative heat exchanger and to the field manifold at the outlet, the installation further comprises a separation tank, the inlet of which is connected through the second cavity of the cooler to the condensate removal lines from the separators, and its outputs are connected to the compressor drive and the field collector . 0 five