CN219231502U

CN219231502U - Sulfur-resistant corrosion-resistant three-phase separator

Info

Publication number: CN219231502U
Application number: CN202223419519.2U
Authority: CN
Inventors: 吴启春; 顾道丰; 张涛
Original assignee: Jianhu County Hongda Valve & Pipe Fitting Co ltd
Current assignee: Jianhu County Hongda Valve & Pipe Fitting Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-06-23
Anticipated expiration: 2032-12-20

Abstract

The utility model discloses a sulfur-resistant corrosion-resistant three-phase separator, which comprises a tank body, wherein a gradient corrosion-resistant layer is arranged on the inner wall of the tank body; the top of the tank body is provided with an oil-gas-water inlet, a safe blowout port, a pressure gauge mounting port and an air outlet; an oil drain port and a liquid drain port are arranged at the bottom of the tank body; the oil drain port is connected with an oil drain pipeline, the liquid drain port is connected with a liquid drain pipeline, and the oil drain pipeline and the liquid drain pipeline are respectively provided with an adjusting control valve; a maintenance inlet is arranged between the air outlet and the oil drain port on one side of the tank body, and a flushing port is arranged on the other side of the tank body; an overflow plate is arranged at the oil drain port in the tank body and divides the tank body into a water chamber and an oil chamber; an anti-collision plate is arranged in the tank body close to the oil gas water inlet; the middle position of the upper half part in the tank body is provided with a secondary element separating piece, and the lower half part in the tank body is provided with a group of wave plates close to the secondary separating piece. The inner wall of the tank body is provided with the gradient anti-corrosion layer, so that the product has the characteristics of sulfur resistance and corrosion resistance, and the whole service life of the product is prolonged by more than 3 times.

Description

Sulfur-resistant corrosion-resistant three-phase separator

Technical Field

The utility model relates to the field of special equipment for petroleum and natural gas drilling and production, in particular to a sulfur-resistant corrosion-resistant three-phase separator.

Background

In the petroleum exploitation process, crude oil exploited contains mixed liquid of associated oil, natural gas and water, and the mixed liquid is required to be separated. When the existing oil-gas-water three-phase separator works, gas-liquid mixed fluid enters the separator through a gas-liquid inlet to carry out basic phase separation, and gas enters a gas channel and is subjected to rectifier and gravity sedimentation to separate liquid drops; the oil flows upwards and the water flows downwards after the liquid enters the liquid space to separate the bubbles, the gas flows out from the air outlet after removing small liquid drops by the mist absorber before leaving the separator, the oil enters the oil groove from the overflow baffle plate and flows out from the oil outlet, and the water flows out from the water outlet. The mixed liquid of the oil, the natural gas and the water which are just extracted has higher temperature and has stronger corrosiveness due to the existence of acid gases such as H2S and the like, so that the service life of the traditional three-phase separator is not long, and even the progress of the whole extraction engineering can be influenced; in addition, the traditional separator adopts a liquid level meter, and the downstream throttle valve is manually adjusted according to the height of the liquid level during the separation operation, which is not timely, has great potential safety hazard,

disclosure of Invention

The utility model aims to: the utility model aims to provide a sulfur-resistant corrosion-resistant three-phase separator.

The technical scheme is as follows: in order to achieve the purpose, the utility model comprises a tank body, wherein a gradient anti-corrosion layer is arranged on the inner wall of the tank body; the top of the tank body is provided with an oil gas water inlet, a safe blowout port, a pressure gauge mounting port and an air outlet; an oil drain port with an oil control valve and a liquid drain port with a water control valve are arranged at the bottom of the tank body; an overflow plate is arranged in the tank body and close to the oil drain port, and the tank body is divided into a water chamber and an oil chamber by the overflow plate; a maintenance inlet is formed in one side of the tank body between the air outlet and the oil drain port, and a flushing port is formed in the other side of the tank body; an anti-collision plate is arranged in the tank body close to the oil gas water inlet; the design of the anti-collision plate prevents liquid drops separated from the mounting seat from being sputtered on the side wall of the tank body cavity, and the side wall is damaged for a long time;

the middle position of the upper half part in the tank body is provided with a secondary element separating piece, and the lower half part in the tank body is provided with a group of wave-preventing plates close to the secondary element separating piece. The breakwater prevents the liquid from exciting the wave surface in the tank.

The gradient corrosion-resistant layer is prepared by adopting a chromium-molybdenum ion nickel-penetrating process, and the specific process is as follows:

the method comprises (1) filtering nickel powder with mesh screen, (2) mixing nickel powder and filler with solid catalyst according to nickel hydride 20-25%, NH 4 Cl0.5-2.5% and nickel powder the rest weight ratio, stirring uniformly to prepare nickel-penetrating agent, placing into nickel-penetrating box together with workpiece, (3) heating to 400-450deg.C, holding for 3-5 hr, (4) heating to 630-750deg.C continuously, holding for 20-24 hr, (5) cooling with box, etc., thus although the manufacturing cost of product is increased by about 2%, the service life of product is prolonged by more than 3 times.

Further, the water chamber and the oil chamber are respectively provided with a high-low water level detecting head and a high-low oil level detecting head which are connected with a control cabinet, and the control cabinet is also connected with an oil discharge pipeline and an adjusting control valve on the liquid discharge pipeline respectively.

Further, a demister is arranged at the air outlet in the tank body. The demister is internally provided with a metal mesh filler which is formed by winding a stainless steel wire braided fabric, and liquid drops impact the metal mesh and coalesce to be settled downwards, so that the discharge of liquid drops carried by gas is eliminated, and the separation effect is ensured.

Further, the oil control valve and the water control valve are both adjusting control valves, the adjusting control valves comprise valve bodies, valve covers, electric actuators, valve rod valve core assemblies and valve cores, the valve covers are arranged above the valve bodies through bolts, the electric actuators are arranged at the tops of the valve covers, and the valve rod valve core assemblies penetrate through the valve covers, are embedded into the valve bodies and are connected with the electric actuators; the valve body is internally provided with a valve seat assembly positioned below the valve rod and valve core assembly, and the valve body is internally provided with a valve body lining and a flushing-resistant sleeve positioned below the valve seat assembly. The electric actuator controls the valve rod and valve core assembly to rotate, so that the opening degree of the valve is adjusted.

Further, limiting blocks are arranged on the inner side of the top of the valve cover and positioned on two sides of the valve rod and valve core assembly; the inner side of the bottom of the valve cover is positioned at the outer side of the valve rod valve core assembly and is provided with an elastic check ring for holes and valve rod packing.

Further, a middle head gasket ring is arranged between the valve cover and the valve body, and the valve cover and the valve body are locked and fixed through bolts and nuts.

Further, a pressure relief screw is arranged on the side face of the valve body.

Further, the secondary separation element is a coalescing plate, when the unseparated gas-liquid mixed fluid which is flushed from the inlet of the separator enters the group of honeycomb coalescing plates, liquid drops in the gas collide with the coalescing plates to be further crushed and separated, and after the flow speed between the coalescing plates can be improved, the high-speed liquid flows collide with the plate walls to be more thoroughly separated, the separated liquid drops are gathered on the coalescing plates and sink into the liquid downwards along the plate walls of the coalescing plates, and a layer of bubbles in the form of gas which does not escape from oil at the oil-gas interface can be crushed on the plate walls of the coalescing plates due to the increase of the flow speed when the bubbles pass through the coalescing plates, and the gas escapes from the bubbles to rise, so that the device can remove the bubbles from the oil and can remove the bubbles from the bubbles.

The technical scheme can be seen that the beneficial effects of the utility model are as follows:

(1) According to the corrosion-resistant three-phase separator, the gradient corrosion-resistant layer is arranged on the inner wall of the tank body, so that the problem of low service life of the three-phase separator is solved, and the product has the characteristics of sulfur resistance and corrosion resistance, and meanwhile, the whole service life of the product is ensured to be prolonged by more than 3 times.

(2) The corrosion-resistant three-phase separator provided by the utility model has the advantages that the opening degree of the regulating control valve can be arbitrarily regulated; the water level and oil level signals measured by the high-low water level probe and the high-low oil level probe are transmitted to the controller, and the controller sends out instructions to adjust the opening degree of the control valve so as to ensure proper water level and oil level in the body, avoid being influenced by upstream flow and ensure good separation effect and high efficiency.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic illustration of the structure of a regulator control valve of the present utility model;

Detailed Description

The utility model is further elucidated below in connection with the drawings and the specific embodiments.

The sulfur-resistant corrosion-resistant three-phase separator shown in the figures 1-2 comprises a tank body 1, wherein a gradient corrosion-resistant layer is arranged on the inner wall of the tank body; the top of the tank body 1 is provided with an oil gas water inlet 2, a safe open-flow port 3, a pressure gauge mounting port 4 and an air outlet 5; an oil drain port 6 with an oil control valve and a liquid drain port 7 with an oil control valve are arranged at the bottom of the tank body 1; an overflow plate 10 is arranged in the tank body 1 near the oil drain port 7, and the overflow plate 10 divides the tank body 1 into a water chamber and an oil chamber; a maintenance inlet 8 is arranged between the air outlet 5 and the oil drain port 7 on one side of the tank body 1, and a flushing port 9 is arranged on the other side of the tank body 1; an anti-collision plate 11 is arranged in the tank body 1 and close to the oil gas water inlet 2; the middle position of the upper half part in the tank body 1 is provided with a secondary element separating piece 12, and the lower half part in the tank body 1 is provided with a group of wave plates 13 close to the secondary element separating piece 12.

Wherein, a demister 131 is arranged in the tank 1 at the air outlet 5.

The provision of the anti-collision plate 11 in this embodiment prevents liquid from splashing on the side walls of the cavity of the tank 1, resulting in damage to the side walls for a long period of time.

In this embodiment, the oil control valve 14 and the water control valve 15 are both adjusting control valves, the adjusting control valves include a valve body 101, a valve cover 102, an electric actuator 103 and a valve rod valve core assembly 104, the valve cover 102 is mounted above the valve body 101 through bolts, the electric actuator 103 is mounted on the top of the valve cover 102, and the valve rod valve core assembly 104 is embedded in the valve body 101 after passing through the valve cover 102 and is connected with the electric actuator 103; the valve body 101 is internally provided with a valve seat assembly 105 below the valve rod valve core assembly 104, and the valve body 101 is internally provided with a valve body lining 106 and a flushing-resistant sleeve 107 below the valve seat assembly 105.

In this embodiment, limiting blocks 1012 are disposed on two sides of the valve stem core assembly 104 on the inner side of the top of the valve cover 102; the bottom inner side of the valve cover 102 is positioned outside the valve rod valve core assembly 104, and is provided with a circlip 108 for holes and a valve rod packing 109.

In this embodiment, a middle head gasket 1010 is disposed between the valve cover 102 and the valve body 101, and the two are locked and fixed by bolts and nuts.

In this embodiment, a pressure release screw 1011 is provided on the side surface of the valve body 101.

The liquid inlet pipeline of the three-phase separator is connected with the pipeline of the upstream oil nozzle manifold outlet or connected with the outlet of the heat exchanger; the exhaust pipeline of the three-phase separator is directly connected with the combustion system or the collecting system; the liquid discharge and oil pipeline of the three-phase separator are respectively connected with the metering tanks of water and oil; the safe discharge pipeline of the three-phase separator is led to a flow-back liquid pool by a pipeline; the temperature sensor and the liquid level meter are connected with the control system.

The examples are intended to illustrate the utility model and not to limit its scope, and after reading the utility model, various equivalents of the utility model by those skilled in the art are within the scope of the utility model as defined by the claims appended hereto.

Claims

1. A sulfur-resistant corrosion-resistant three-phase separator, characterized in that: the anti-corrosion device comprises a tank body (1), wherein a gradient anti-corrosion layer is arranged on the inner wall of the tank body (1); an oil gas water inlet (2), a safe open-flow interface (3), a pressure gauge mounting port (4) and an air outlet (5) are arranged on the top of the tank body (1); an oil drain port (6) with an oil control valve (14) and a liquid drain port (7) with a water control valve (15) are arranged at the bottom of the tank body (1); an overflow plate (10) is arranged in the tank body (1) close to the oil drain port (6), and the overflow plate (10) divides the tank body (1) into a water chamber and an oil chamber; a maintenance inlet (8) is formed between the air outlet (5) and the oil drain port (6) on one side of the tank body (1), and a flushing port (9) is formed on the other side of the tank body (1); an anti-collision plate (11) is arranged in the tank body (1) close to the oil gas water inlet (2); the middle position of the upper half part in the tank body (1) is provided with a secondary element separating piece (12), and the lower half part in the tank body (1) is provided with a group of wave plates (13) close to the secondary element separating piece (12).

2. A sulfur and corrosion resistant three phase separator as defined in claim 1 wherein: the demister (131) is arranged in the tank body (1) and located at the air outlet (5).

3. A sulfur and corrosion resistant three phase separator as defined in claim 1 wherein: the oil control valve (14) and the water control valve (15) are both regulating control valves, the regulating control valves comprise a valve body (101), a valve cover (102), an electric actuator (103) and a valve rod valve core assembly (104), the valve cover (102) is arranged above the valve body (101) through bolts, the electric actuator (103) is arranged at the top of the valve cover (102), and the valve rod valve core assembly (104) penetrates through the valve cover (102) and is embedded in the valve body (101) and is connected with the electric actuator (103); valve body (101) inside is located valve rod case subassembly (104) below and sets up disk seat assembly (105), and valve body (101) inside is located disk seat assembly (105) below and is equipped with valve body inside lining (106) and resistant cover (107).

4. A sulfur and corrosion resistant three phase separator as claimed in claim 3, wherein: limiting blocks (1012) are arranged on two sides, located on the inner side of the top of the valve cover (102), of the valve rod valve core assembly (104), and hole circlips (108) and valve rod fillers (109) are arranged on the outer side, located on the inner side of the bottom of the valve cover (102), of the valve rod valve core assembly (104).

5. A sulfur and corrosion resistant three phase separator as defined in claim 4 wherein: a middle head gasket ring (1010) is arranged between the valve cover (102) and the valve body (101), and the valve cover and the valve body are locked and fixed through bolts and nuts.

6. A sulfur and corrosion resistant three phase separator as defined in claim 5 wherein: the side of the valve body (101) is provided with a pressure relief screw (1011).