RU17006U1 - INSTALLATION OF OIL SEPARATION - Google Patents

Abstract

An oil end separation unit, comprising a column-type end separator with oil inlet and oil outlet manifolds and pipes, a gas manifold with gas outlet pipes, a valve, characterized in that the installation comprises an inlet horizontal separator connected by a pipe for supplying high-pressure (active) gas to a vacuum compressor, an end separator made in the form of 3-7 vertical end separators, interconnected by jumpers, which together with the exhaust manifold and exhaust pipes before constitute a strapping in the form of a stable spatial structure, and their upper parts are connected to the inlet separator by oil delivery pipes, each of which is equipped with a tangential inlet element containing a vacuum pair: a nozzle and a confuser, a cassette droplet separator is located above the tangential inlet element, the gas outlet manifold is connected to a vacuum compressor having a pipe for supplying compressed gas to the consumer, and a screw perforator is located in the upper part of the end separators and under the tangential input element Rowan defoamer.

Description

BOld 19/00.

J000120 57

Installation of oil end separation

The utility model relates to devices for the final release of gas from liquids and can be used as the end stage of oil separation.

Known separation plant A.S. No. 587962. This installation contains a horizontal end separator, mounted at a height of 15 - 18 m, for pumping liquid into a vertical steel tank (PBC) according to the principle of communicating vessels. Separation in this installation occurs at a pressure of 0.2 - 0.5 atm., The reduction of which is not sufficient for complete degassing and, therefore, does not reduce the vapor pressure (stabilization) of the oil. In this installation, it is not possible to reduce the degassing pressure and increase the stability of oil with the help of vacuum compressors, since it is necessary to build a long suction line. In addition, due to the high altitude, difficulties arise in servicing the installation. And the installation itself is very cumbersome and occupies a large area.

The closest to the proposed utility model is the separation plant A.S. No. 1141818. The installation contains a separator in the form of an inclined column with oil supply and oil collectors, a gas manifold, L-shaped oil discharge pipelines, one of which is connected to an inclined column and an oil collector. The location of the pipe section corresponds to the minimum pressure region, which helps to increase the residence time of the mixture in the apparatus and a more complete separation of free gas from the liquid. The inclined column serves to increase the throughput of the processed oil (degassing and stabilization), in addition, the inclined column has the ability to control from ground reinforcement. However, the inclined column has a small oil evaporation mirror, and therefore degassing and stabilization worsen, while the presence of foam remains for a long time, which prevents further pressure reduction using, for example, vacuum compressors and therefore the use of the pipe section does not reduce the pressure of the degassed oil to the required value. In addition, the bandwidth range is narrow with a variable supply of oil to long-distance vehicles or storage tanks.

The technical task of this utility model is to increase the degree of degassing of oil with a subsequent decrease in the elasticity of its vapor at a variable flow rate over a wide range when feeding it to a long-distance transport or storage tank.

The stated technical problem is solved due to the fact that in the known installation of the final separation of oil, containing an end separator of column type, with oil inlet and oil outlet manifolds and pipes, a gas manifold with gas outlet pipes, a valve, the installation contains an inlet horizontal separator connected by a pipe for supplying a high-pressure ( active) gas to the vacuum compressor, the end separator is made in the form of 3-7 vertical end separators, interconnected by jumpers, which together with the gas the supply manifold and gas exhaust pipes are a bundle in the form of a stable spatial structure, and their upper parts are connected to the inlet separator by oil delivery pipes, each of which is equipped with a tangential element with an inlet containing a vacuum pair: a nozzle and a confuser, a cassette droplet separator is located above the tangential element - inlet, the gas outlet manifold is connected to a vacuum compressor having a pipe for supplying compressed gas to the consumer, and in the upper part of the end separators for the tangential nym element - a screw entry is perforated defoamer.

In FIG. 1 is a diagram of the strapping of the terminal oil separation unit.

In FIG. 2 - installation of oil end separation (general view).

In FIG. 3 - the upper part of one of the vertical end separators in the section.

The installation contains an inlet horizontal separator 1, connected by a pipe 2 for supplying high-pressure (active) gas to the vacuum compressor 3 as a working agent, the installation also contains from 3 to 7 vertical end separators 4, the upper parts of which are connected to the inlet separator 1, oil supply pipes 5, connected to the collector 6, each of the pipes 5 is equipped with a tangential element — an inlet 7 containing a vacuum pair: a nozzle 8 and a confuser 9 for braking the gas with its subsequent removal through the cassette droplet eliminator 10, located above the tangential element - the inlet, in the upper part, the end separators 4 are interconnected by gas exhaust pipes 11, interconnected by a gas exhaust manifold 12, connected in turn with a vacuum compressor 3 having a pipe 13 for supplying compressed gas to the consumer.

settling on the inner walls of the end separators 4 and screw defoamers 14 after its degassing for storage in the tank 17 and long-distance transport. The end separators 4 in their lower part are also equipped with pipes 18 connected to a collector 19 for draining water and sludge into the tank 20. The faucet-control valves (gate valve 21 and pressure regulator 22) “maintain the set operating mode of the installation to themselves. The gas exhaust manifold 12 with gas exhaust pipes 11 and jumpers 23 between the end separators 4 is a strapping in the form of a stable spatial structure.

Since the use of this unit provides oil consumption in a wide range when applying it to long-distance transport and increasing throughput, the number of end separators is taken from 3 to 7, less than 3 will reduce the degree of degassing and, in addition, the design will lose stability and require bulky stretch marks, more than 7 - not economically feasible.

Installation works as follows.

Oil production (oil and gas), the mixture enters the inlet separator 1, from which oil gas with excess energy flows through the pipe 2 to the vacuum compressor 3, and the oil and gas mixture is separated in the inlet separator 1. Partially degassed in the inlet separator 1, the oil enters through the oil supply pipes 5 and the manifold 6 through the tangential element - input 7, due to which it receives a twisting impulse to the cylindrical walls inside each of the end separators 4 and partially to the screw defoamer 14, inside the tangential element - input 7 before the beginning of the confuser 9, a zone of reduced pressure (evacuation) is formed due to which the gas intensively breaks out of the total gas-liquid flow and rushes through the cassette droplets the outlet to the exhaust pipes 11 and the manifold 12, the high speed of the high-pressure gas supplied through the pipe 2 to the vacuum compressor 3 carries gas from the pipe 11 and the manifold 12 to the vacuum compressor 3 where a vacuum zone is also created, then the compressed gas is supplied through the pipe 13 to the consumer .

Thanks to the tangential inlet 7 containing the nozzle 8 and the confuser 9, the gas is decelerated by vacuum and then the foam is quietly quenched on the screw perforated defoamer 14, in addition, a cassette droplet eliminator 10 is used to precipitate light oil and water vapor vapors. This process of deep degassing (stabilization) of oil is facilitated by a natural change in temperature along the height of the end separators 4 from top to bottom and due to condensation of vapors in the cassette droplet eliminator 10. Thus, this process

is carried out at a pressure of ± 0.1 am, due to the suction of the residual gas through the pipes 11 and the manifold 12 for receiving into the vacuum compressor 3 for the subsequent supply of compressed gas to the consumer. Degassed oil under its own pressure of the height of its column (end separators have a height of 15 - 20 m) flows into the reservoir on the principle of communicating vessels through pipes 15 and manifold 16 and to long-distance transport. Free water and sludge are discharged through pipes 18 and collector 19 into a tank 20 for further preparation and use in reservoir pressure maintenance systems in productive deposits. The use of this installation with a variable number of working end separators contributes to the expansion of the KSU throughput range, taking into account the calculated group of end separators and permissible fluctuations in the operating modes of each. Significantly increases the degree of degassing of oil. The installation is compact, takes up a significantly smaller building area. It is stable and much more convenient and reliable in operation in comparison with the known devices of this purpose.

Claims (1)

An oil end separation unit, comprising a column-type end separator with oil inlet and oil outlet manifolds and pipes, a gas manifold with gas outlet pipes, a valve, characterized in that the installation comprises an inlet horizontal separator connected by a pipe for supplying high-pressure (active) gas to a vacuum compressor, an end separator made in the form of 3-7 vertical end separators, interconnected by jumpers, which together with the exhaust manifold and exhaust pipes before constitute a strapping in the form of a stable spatial structure, and their upper parts are connected to the inlet separator by oil delivery pipes, each of which is equipped with a tangential inlet element containing a vacuum pair: a nozzle and a confuser, a cassette droplet separator is located above the tangential inlet element, the gas outlet manifold is connected to a vacuum compressor having a pipe for supplying compressed gas to the consumer, and a screw perforator is located in the upper part of the end separators and under the tangential input element Rowan defoamer.