Three-phase separator

Abstract

The invention discloses a three-phase separator, and belongs to the technical field of petroleum separation processing, the three-phase separator comprises a tank main body, the top of the tank main body is sequentially provided with a liquid inlet, a gas outlet and a safety valve port from left to right, and the liquid inlet and the gas outlet are communicated through a gas channel pipeline; a drain outlet and a water outlet are sequentially formed in the bottom of the tank main body from left to right, and an oil outlet symmetrical to the water outlet is formed in the bottom of the tank main body; a grid plate cavity and a disperser are sequentially arranged below the liquid inlet in the tank main body from top to bottom, and a bottom main pipe in the liquid inlet extends into the grid plate cavity to the position over the top of the disperser; a corrugated plate filler and a metal baffle plate are sequentially arranged at the top of an inner cavity of the tank main body from left to right; an oil-water separation plate is transversely arranged from the right surface of the baffle plate to a right side sealing head of the inner cavity of the tank main body. According to the three-phase separator, through four times of separation, the problem that crude oil mixed liquid is not separated thoroughly is solved, and the purpose of improving the separation effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum separation and processing, in particular to a three-phase separator. Background Art

[0002] In the process of oil production, the crude oil extracted from the oil well is generally a mixed liquid of natural gas, water and oil. At present, this mixed liquid is usually separated by an oil-gas-water three-phase separator, but the existing separator still has the problem of incomplete separation, resulting in unsatisfactory separation effect. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention aims to provide a three-phase separator to solve the problem that the crude oil mixture produced by oil production is not completely separated, resulting in poor separation effect.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a three-phase separator, comprising a tank body, wherein a liquid inlet, an air outlet and a safety valve are sequentially arranged on the top of the tank body from left to right, and the liquid inlet is connected to the air outlet through a gas channel pipeline; a sewage outlet and a water outlet are sequentially arranged on the bottom of the tank body from left to right, and an oil outlet symmetrical to the water outlet is arranged on the bottom of the tank body; a grid plate cavity and a disperser are sequentially arranged from top to bottom below the liquid inlet inside the tank body, and the bottom main pipe in the liquid inlet extends into the grid plate cavity to just above the top of the disperser, so as to separate gas, oil and water liquid in the mixed liquid; a corrugated plate filler and a metal baffle are sequentially arranged on the top of the inner cavity of the tank body from left to right, so as to separate gas and liquid, oil and liquid, and water liquid; a baffle is arranged on the inner cavity of the tank body near the right side of the air outlet, and an oil-water partition is horizontally arranged from the right side of the baffle to the right end cap of the inner cavity of the tank body, and the oil-water partition divides the space from the baffle to the right end cap of the tank body into an oil chamber and a water chamber.

[0006] Preferably, the tank body is provided with a water outlet at the bottom of the water chamber, and an oil outlet at the bottom of the oil chamber.

[0007] Preferably, a liquid level regulating pipe connected to the water chamber is provided at the bottom of the baffle, which is used to allow the separated high-density water to enter the water chamber from the left side of the baffle, and at the same time control the liquid level in the water chamber by adjusting the height of the liquid level regulating pipe in the water chamber.

[0008] Preferably, a group of liquid level gauges are respectively provided at the water chamber and the oil chamber on the tank body, which are a high liquid level gauge and a low liquid level gauge respectively.

[0009] Preferably, a wire mesh demister is provided in the liquid inlet above the inlet and in the gas outlet above the gas inlet; and an exhaust port is provided at the top of the liquid inlet and the top of the gas outlet.

[0010] Preferably, one end of the gas channel pipeline is connected to the exhaust port at the top of the liquid inlet, and the other end is connected to the air inlet on one side of the air outlet.

[0011] Preferably, density holes are arranged on the grid plates in the grid plate chamber for secondary separation.

[0012] The beneficial effects of the present invention are as follows: the three-phase separator of the present invention can completely separate the gas, oil and water in the crude oil mixture through the four separations of the dispersion device, the grid cavity device with density holes, the corrugated plate filler device and the TP plate device in sequence, thereby improving the separation accuracy; through the application of the three-phase separator in the petroleum separation process, the problem of incomplete separation of the crude oil mixture is better solved, and the purpose of improving the separation effect is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A schematic diagram of the structure of a three-phase separator provided in an embodiment of the present invention;

[0015] Figure 2 for Figure 1 Schematic diagram of the right side of the middle structure.

[0016] Description of reference numerals:

[0017] Tank body 1, liquid inlet 2, gas outlet 3, safety valve port 4, gas channel pipeline 5, sewage outlet 6, water outlet 7, oil outlet 8, grid cavity 9, disperser 10, corrugated plate filler 11, metal baffle 12, baffle 13, oil-water partition 14, oil chamber 15, water chamber 16, liquid level regulating pipe 17, wire mesh demister 18. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1, as Figure 1 to Figure 2As shown, a three-phase separator includes a tank body 1, wherein the top of the tank body 1 is provided with a liquid inlet 2, an air outlet 3, and a safety valve port 4 from left to right, and the liquid inlet 2 is connected to the air outlet 3 through a gas channel pipeline 5, wherein the safety valve port 4 is used for the safety protection of the entire tank and the safety protection of the process pipeline; the bottom of the tank body 1 is provided with a sewage outlet 6 and a water outlet 7 from left to right, and the bottom of the tank body 1 is provided with an oil outlet 8 symmetrical to the water outlet 7, wherein the sewage outlet 6 is used to discharge the separated sediment at the bottom; the interior of the tank body 1 is located below the liquid inlet 2 from top to bottom A grid cavity 9 and a disperser 10 are arranged in sequence, and the bottom main pipe in the liquid inlet 2 extends into the grid cavity 9 to just above the top of the disperser 10, for separating the oil, water and gas in the mixed liquid; a corrugated plate filler 11 and a metal baffle 12 are arranged in sequence from left to right on the top of the inner cavity of the tank body 1, for further separating the gas-liquid, oil-liquid and water-liquid; a baffle 13 is arranged on the right side of the inner cavity of the tank body 1 near the gas outlet 3, and an oil-water partition 14 is transversely arranged from the right side of the baffle 12 to the right side of the inner cavity of the tank body 1. The oil-water partition 14 divides the space from the baffle 13 to the right side of the tank body 1 into an oil chamber 15 and a water chamber 16.

[0020] In addition, it should be noted that the tank body 1 is also provided with an observation port for observing the liquid level and other conditions in the tank body 1; Figure 1 A group of liquid level gauges are provided on the mixing chamber of the tank body 1 on the left side of the baffle 13, including a high liquid level gauge for measuring the high level of the liquid and a low liquid level gauge for measuring the low level of the liquid.

[0021] Further, such as Figure 2 As shown, the tank body is provided with a water outlet 7 at the bottom of the water chamber 15 , and an oil outlet 8 at the bottom of the oil chamber 16 .

[0022] Further, such as Figure 1 and Figure 2 As shown, a liquid level regulating pipe 17 connected to the water chamber 15 is provided at the bottom of the baffle 13 for allowing the separated high-density water to enter the water chamber from the left side of the baffle, and at the same time controlling the liquid level in the water chamber by adjusting the height of the liquid level regulating pipe in the water chamber.

[0023] Further, such as Figure 1 and Figure 2 As shown, a group of liquid level gauges are respectively provided at the water chamber 16 and the oil chamber 15 on the tank body 1, which are a high liquid level gauge and a low liquid level gauge.

[0024] Further, such as Figure 1As shown, a wire mesh demister 18 is provided above the inlet in the liquid inlet 2 and above the air inlet in the air outlet 3, which is used to eliminate foam generated by the tumbling of the mixed liquid, and the elimination effect is good; an exhaust port is provided at the top of the liquid inlet 2 and the top of the air outlet 3.

[0025] Further, such as Figure 1 As shown, one end of the gas channel pipeline 5 is connected to the exhaust port at the top of the liquid inlet 2, and the other end is connected to the air inlet on one side of the air outlet 3.

[0026] Further, such as Figure 1 As shown, density holes are arranged on the grid plates in the grid plate chamber 9 for secondary separation.

[0027] When in use, the oil-water-gas mixed liquid enters the equipment cavity (i.e., the inner cavity of the tank body) through the liquid inlet main pipe and is broken by the disperser at the right bottom, which is the first rough separation. At this time, the mixed liquid after the initial separation by the disperser flows to the grid plate cavity; when the mixed liquid fills the grid plate cavity, it is separated and discharged into the equipment cavity through the density holes on the grid plate, which is the second separation. At this time, the liquid level of the mixed liquid after the first and second separations in the equipment cavity continues to increase with the flow rate of the inlet; then, the mixed liquid is separated again through the corrugated plate filler and the TP plate (i.e., the metal baffle plate), completing the third and fourth separations, and forming a gas, oil, and water separation interface from top to bottom according to the density of different substances. At this time, the gas and liquid in the upper gas layer are discharged upward through the gas outlet; and, after the high and low liquid level gauges located in the separation interface area of ​​the tank body measure the set liquid level, the oil in the middle oil layer flows into the oil chamber through the baffle plate and is discharged through the oil outlet at the bottom, and the water in the bottom water layer is blocked by the baffle plate and introduced into the water chamber through the liquid level regulating pipe and is discharged through the water outlet at the bottom;

[0028] Among these, it should be noted that:

[0029] (1) When the water-gas mixed liquid enters the liquid inlet, part of the splashed mixed liquid is blocked by the wire mesh demister at the top of the liquid inlet and is separated into part of the gas and liquid. This part of the gas and liquid is collected through the exhaust port at the top of the liquid inlet through the gas channel pipeline and the gas and liquid generated in the equipment cavity (i.e., the gas and liquid in the separated gas layer), and then goes up through the wire mesh demister in the gas outlet and is discharged out through the exhaust port at the top of the gas outlet;

[0030] (2) The oil chamber and the water chamber need to be measured by a liquid level meter to reach the liquid level height requirement, and then the separated oil and water are discharged through the oil and water outlets (i.e., the oil outlet and the water outlet).

[0031] Obviously, the above-mentioned embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above-mentioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A three-phase separator, comprising a tank body, characterized in that: The top of the tank body is provided with a liquid inlet, an air outlet and a safety valve from left to right, and the liquid inlet is connected to the air outlet through a gas channel pipeline; the bottom of the tank body is provided with a sewage outlet and a water outlet from left to right, and the bottom of the tank body is provided with an oil outlet symmetrical to the water outlet; the inside of the tank body is provided with a grid cavity and a disperser from top to bottom below the liquid inlet, and the bottom main pipe in the liquid inlet extends into the grid cavity to just above the top of the disperser; the top of the inner cavity of the tank body is provided with a corrugated plate filler and a metal baffle from left to right; a baffle is provided in the inner cavity of the tank body near the right side of the air outlet, and an oil-water partition is transversely provided from the right side of the baffle to the right side of the inner cavity of the tank body, and the oil-water partition divides the space from the baffle to the right side of the tank body head into an oil chamber and a water chamber.

2. A three-phase separator as claimed in claim 1, characterized in that: The tank body is provided with a water outlet at the bottom of the water chamber, and an oil outlet at the bottom of the oil chamber.

3. A three-phase separator as claimed in claim 2, characterized in that: A liquid level regulating pipe communicating with the water chamber is provided at the bottom of the baffle.

4. A three-phase separator as claimed in claim 1, characterized in that: A group of liquid level gauges are respectively arranged at the water chamber and the oil chamber on the tank body, which are a high liquid level gauge and a low liquid level gauge.

5. A three-phase separator as claimed in claim 1, characterized in that: A wire mesh demister is provided above the inlet in the liquid inlet and above the air inlet in the air outlet; and an exhaust port is provided at the top of the liquid inlet and the top of the air outlet.

6. A three-phase separator as claimed in claim 1, characterized in that: One end of the gas channel pipeline is connected to the exhaust port at the top of the liquid inlet, and the other end is connected to the air inlet on one side of the air outlet.

7. A three-phase separator as claimed in claim 1, characterized in that: Density holes are arranged on the grid plates in the grid plate chamber for secondary separation.

Images