CN217556126U

CN217556126U - Skid-mounted ultrasonic demulsification and oil removal device

Info

Publication number: CN217556126U
Application number: CN202221806752.3U
Authority: CN
Inventors: 王文
Original assignee: Daqing Hai Xiao Machinery And Equipment Manufacture Co ltd
Current assignee: Daqing Hai Xiao Machinery And Equipment Manufacture Co ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-10-11
Anticipated expiration: 2032-07-14

Abstract

The utility model belongs to the technical field of oil field production equipment, in particular to a skid-mounted ultrasonic demulsification deoiling device, which is arranged on a skid body and comprises a water inlet pipe, a butterfly valve, an ultrasonic generator, a treatment tank manhole, a treatment tank cat ladder, a treatment tank exhaust pipe, a treatment tank liquid level transmitter, a treatment tank dosing pipe, a treatment tank manual liquid discharge pipe, a treatment tank automatic liquid discharge pipe, a distribution box, a drainage pump liquid discharge pipe, a settling tank blow-off pipe, a settling tank liquid level transmitter, a settling tank cat ladder, a treatment tank blow-off pipe and a settling tank manhole; the ultrasonic generators are arranged at two ends of the treatment tank, the treatment tank is communicated with the settling tank through an automatic drainage pipe of the treatment tank, the drainage pump is communicated with the settling tank, and the drainage pump is communicated with the drainage pipe of the drainage pump; ball valves are arranged on the manual drain pipe of the treatment tank, the drain pipe of the drainage pump and the drain pipe of the settling tank. The device realizes crude oil dehydration through ultrasonic demulsification and sedimentation, and the whole device occupies a small area and has high repeated utilization rate.

Description

Sled dress formula ultrasonic wave breakdown of emulsion deoiling device

Technical Field

The utility model belongs to the technical field of oil field production equipment, concretely relates to sled dress formula ultrasonic wave breakdown of emulsion deoiling device.

Background

Ultrasonic waves are sound waves with frequencies above 20000 hertz. The method is characterized in that: the wave length is short, the linear propagation is approximately performed, and the attenuation in solid and liquid is smaller than that of electromagnetic waves; the energy is concentrated, high-intensity and violent vibration can be formed, shock waves and cavitation in liquid are caused, and the ultrasonic wave can generate various effects such as mechanical, optical, thermal, electrical, chemical and biological effects, and is widely applied by modern technologies.

Crude oil water is a common phenomenon in oil and gas field development. The crude oil containing water must be dewatered and desalted before processing. The oil-water separation is mainly realized by adopting an electric desalting method, and a demulsifier is generally required to be added to improve the dehydration effect. However, some crude oils cannot be separated smoothly by the above conventional methods, such as oil-in-water (O/W) emulsified crude oil produced by tertiary oil recovery, recovered sewage oil, aged oil, some imported oil, etc., and are difficult to be demulsified and dehydrated by an electric field method and a chemical method due to the chemical components and the structural complexity of the demulsifying fluid. In view of this, if ultrasonic demulsification is used for the oil removal, the oil-water separation effect is inevitably improved. At present, no formed skid-mounted ultrasonic demulsification equipment is used for production in the oil field. Therefore, it is necessary to design a skid-mounted ultrasonic demulsification and oil removal device.

SUMMERY OF THE UTILITY MODEL

The invention aims at providing a skid-mounted ultrasonic demulsification deoiling device. The device adopts the integrated mode of sled dress, realizes the crude oil dehydration through ultrasonic wave breakdown of emulsion and settlement, and whole device area is little, and reuse rate is high, and operation low in production cost.

The utility model adopts the technical proposal that: a skid-mounted ultrasonic demulsification deoiling device is mounted on a skid body and comprises a water inlet pipe, a butterfly valve, an ultrasonic generator, a treatment tank manhole, a treatment tank ladder stand, a treatment tank exhaust pipe, a treatment tank liquid level transmitter, a treatment tank dosing pipe, a treatment tank manual liquid discharge pipe, a treatment tank automatic liquid discharge pipe, a distribution box, a drainage pump liquid discharge pipe, a settling tank blow-off pipe, a settling tank liquid level transmitter, a settling tank ladder stand, a treatment tank blow-off pipe and a settling tank manhole; the device comprises a treatment tank, a treatment tank drainage pipe, a treatment tank drainage outlet, a treatment tank drainage pipe and a treatment tank drainage pipe, wherein the two ultrasonic generators are respectively arranged at two ends of the treatment tank; the treatment tank is communicated with the sedimentation tank through an automatic treatment tank drain pipe, the top of the sedimentation tank is provided with a sedimentation tank liquid level transmitter and a sedimentation tank manhole, a blow-off pipe of the sedimentation tank is communicated with the sedimentation tank in a welding way, a water inlet of the drainage pump is communicated with the sedimentation tank through a connecting pipe, and a liquid outlet of the drainage pump is communicated with a drainage pump drain pipe; butterfly valves are arranged on the water inlet pipe and the sewage discharge pipe of the treatment tank; ball valves are respectively arranged on the manual drain pipe of the treatment tank, the drain pipe of the drainage pump and the drain pipe of the settling tank; and the ultrasonic generator and the drainage pump are respectively connected with the distribution box through cables.

Furthermore, the treatment tank ladder is welded on the side face of the treatment tank.

Further, the settling tank crawling ladder is welded on the side face of the settling tank.

Further, a hole cover is installed at the top of the manhole of the treatment tank.

Furthermore, a hole cover is installed at the top of the manhole of the settling tank.

This neotype beneficial effect: a skid-mounted ultrasonic demulsification and oil removal device is provided. The device adopts the integrated mode of sled dress, realizes the crude oil dehydration through ultrasonic wave breakdown of emulsion and settlement, and whole device area is little, and reuse rate is high, and operation low in production cost. The device is characterized in that all process equipment, electric appliances, instruments, pipelines and pipe fittings are arranged on the movable prying body in a centralized manner, so that the occupation of land is small, and the operation and maintenance are convenient; the oil-water separation is realized by utilizing the mechanism of 'displacement effect' generated by the action of ultrasonic waves on fluid media with different properties. Due to the existence of the displacement effect, water ions continuously move towards an antinode or a node, gather and collide to generate water drops with larger diameters, and are separated from oil under the action of gravity; in a standing wave field, water particles are unevenly distributed due to uneven sound pressure distribution, so that the water particles in the oily sewage can be collided more favorably, and the purpose of demulsification is achieved.

Drawings

Fig. 1 is a schematic structural diagram of the first embodiment.

Detailed Description

Example one

Referring to fig. 1, the skid-mounted ultrasonic demulsification and deoiling device is installed on a skid body and comprises a water inlet pipe 1, a butterfly valve 2, an ultrasonic generator 3, a treatment tank 4, a treatment tank manhole 5, a treatment tank ladder 6, a treatment tank exhaust pipe 7, a treatment tank liquid level transmitter 8, a treatment tank dosing pipe 9, a treatment tank manual liquid discharge pipe 10, a treatment tank automatic liquid discharge pipe 11, a distribution box 12, a drainage pump 13, a drainage pump liquid discharge pipe 14, a settling tank blow-off pipe 15, a settling tank liquid level transmitter 16, a settling tank 17, a settling tank ladder 18, a treatment tank blow-off pipe 19 and a settling tank manhole 20; the number of the ultrasonic generators 3 is two, the ultrasonic generators are respectively arranged at two ends of the treatment tank 4, the water inlet pipe 1 is welded at the right side of the treatment tank 4, the water inlet of the water inlet pipe 1 is positioned at the upper part of the treatment tank 4, the top of the treatment tank 4 is provided with a treatment tank manhole 5, a treatment tank exhaust pipe 7, a treatment tank liquid level transmitter 8 and a treatment tank dosing pipe 9, the treatment tank manual liquid discharge pipe 10 is welded at the left side of the treatment tank 4, the liquid discharge port of the treatment tank manual liquid discharge pipe 10 is positioned at the lower part of the treatment tank 4, and the treatment tank sewage discharge pipe 19 is welded at the bottom of the treatment tank 4; the treatment tank 4 is communicated with a settling tank 17 through a treatment tank automatic liquid discharge pipe 11, a settling tank liquid level transmitter 16 and a settling tank manhole 20 are arranged at the top of the settling tank 17, a settling tank drain pipe 15 is communicated with the settling tank 17 in a welding mode, a water inlet of the drainage pump 13 is communicated with the settling tank 17 through a connecting pipe, and a liquid outlet of the drainage pump 13 is communicated with a drainage pump liquid discharge pipe 14; the butterfly valve 2 is arranged on the water inlet pipe 1 and the sewage discharge pipe 19 of the treatment tank; ball valves are respectively arranged on the manual liquid discharge pipe 10 of the treatment tank, the liquid discharge pipe 14 of the drainage pump and the sewage discharge pipe 15 of the settling tank; the ultrasonic generator 3 and the drainage pump 13 are respectively connected with the distribution box 12 through cables; the treatment tank ladder stand 6 is welded on the side surface of the treatment tank 4; the settling tank ladder stand 18 is welded on the side face of the settling tank 17; a manhole cover is arranged at the top of the manhole 5 of the treatment tank; and a hole cover is arranged at the top of the settling tank manhole 20.

Oily sewage enters a treatment tank through a water inlet pipe, and is subjected to demulsification and dehydration treatment through ultrasonic waves generated by an ultrasonic generator; when the liquid level transmitter of the treatment tank monitors a high liquid level, the opening of a butterfly valve of the water inlet pipe is adjusted to control the flow, so that the liquid level of the treatment tank is always stabilized in a high liquid level state; the demulsified oily sewage continuously flows into a settling tank through an automatic liquid discharge pipe of a treatment tank; when the liquid level transmitter of the settling tank on the settling tank monitors high liquid level, the liquid supply to the processing tank is stopped, and the butterfly valve on the water inlet pipe is closed. After the demulsified liquid is statically settled in the settling tank for 3-6 hours, opening a ball valve on a blow-off pipe of the settling tank, discharging the dirty oil, and after the dirty oil is discharged, closing the ball valve of the blow-off pipe of the settling tank; and after the dirty oil is discharged, discharging the water in the settling tank by a drainage pump. Repeating the above operations to perform the next round of oily sewage treatment. When the ultrasonic generator breaks down and needs maintenance, the butterfly valve of the water inlet pipe is closed firstly, the ball valve of the manual liquid discharge pipe of the treatment tank is opened, liquid in the treatment tank is discharged outside, after maintenance is completed, the ball valve of the manual liquid discharge pipe of the treatment tank is closed, the butterfly valve of the water inlet pipe is opened again, and the ultrasonic generator is started to restore the normal production of the device.

The ultrasonic mechanical vibration action promotes the water particles to agglomerate. When the ultrasonic waves pass through the oily sewage medium with the suspended water particles, the suspended water particles are caused to vibrate together with the oily sewage medium. Because the suspended water particles with different sizes have different relative vibration speeds, the water particles collide and adhere with each other, so that the volume and the mass of the water particles are increased, and finally, the water particles are settled and separated; the ultrasonic mechanical vibration can lead natural emulsifying agents such as paraffin, colloid, asphalt and the like in the oily sewage medium to be dispersed uniformly, increase the solubility of the natural emulsifying agents, reduce the mechanical strength of an oil-water interfacial film and be beneficial to the sedimentation separation of a water phase; the strength of an oil-water interface film and the viscosity of crude oil can be reduced under the action of ultrasonic heat. On one hand, the boundary friction increases the temperature of the oil-water boundary, which is beneficial to the rupture of an interface film; on the other hand, the crude oil absorbs heat energy converted by part of sound energy, so that the viscosity of the crude oil can be reduced, and the gravity settling separation of water particles is facilitated; after ultrasonic treatment, the liquid phase medium is fully settled in a settling tank, and the settling time is not less than 3-6 hours, so that the oil-water separation is more thorough.

Claims

1. The utility model provides a sled dress formula ultrasonic wave breakdown of emulsion deoiling device, ultrasonic wave breakdown of emulsion deoiling device install on sled body, its characterized in that: the ultrasonic demulsification deoiling device comprises a water inlet pipe (1), a butterfly valve (2), an ultrasonic generator (3), a treatment tank (4), a treatment tank manhole (5), a treatment tank ladder (6), a treatment tank exhaust pipe (7), a treatment tank liquid level transmitter (8), a treatment tank dosing pipe (9), a treatment tank manual liquid discharge pipe (10), a treatment tank automatic liquid discharge pipe (11), a distribution box (12), a drainage pump (13), a drainage pump liquid discharge pipe (14), a settling tank blow-off pipe (15), a settling tank liquid level transmitter (16), a settling tank (17), a settling tank ladder (18), a treatment tank blow-off pipe (19) and a settling tank manhole (20); the ultrasonic generators (3) are arranged at two ends of the treatment tank (4) respectively, the water inlet pipe (1) is welded on the right side of the treatment tank (4), the water inlet of the water inlet pipe (1) is positioned on the upper portion of the treatment tank (4), the top of the treatment tank (4) is provided with a treatment tank manhole (5), a treatment tank exhaust pipe (7), a treatment tank liquid level transmitter (8) and a treatment tank dosing pipe (9), the treatment tank manual liquid discharge pipe (10) is welded on the left side of the treatment tank (4), the liquid discharge port of the treatment tank manual liquid discharge pipe (10) is positioned on the lower portion of the treatment tank (4), and the treatment tank blow-off pipe (19) is welded on the bottom of the treatment tank (4); the treatment tank (4) is communicated with the settling tank (17) through an automatic treatment tank liquid discharge pipe (11), a settling tank liquid level transmitter (16) and a settling tank manhole (20) are arranged at the top of the settling tank (17), a settling tank blow-off pipe (15) is communicated with the settling tank (17) in a welding mode, a water inlet of the drainage pump (13) is communicated with the settling tank (17) through a connecting pipe, and a liquid outlet of the drainage pump (13) is communicated with a drainage pump liquid discharge pipe (14); butterfly valves (2) are arranged on the water inlet pipe (1) and the sewage discharge pipe (19) of the treatment tank; ball valves are respectively arranged on the manual drain pipe (10) of the treatment tank, the drain pipe (14) of the drainage pump and the drain pipe (15) of the settling tank; the ultrasonic generator (3) and the drainage pump (13) are respectively connected with the distribution box (12) through cables.

2. The skid-mounted ultrasonic demulsification and deoiling device as claimed in claim 1, characterized in that: the treatment tank ladder stand (6) is welded on the side surface of the treatment tank (4).

3. The skid-mounted ultrasonic demulsification deoiling device of claim 1, which is characterized in that: the settling tank ladder (18) is welded on the side surface of the settling tank (17).

4. The skid-mounted ultrasonic demulsification and deoiling device as claimed in claim 1, characterized in that: and a hole cover is arranged at the top of the manhole (5) of the treatment tank.

5. The skid-mounted ultrasonic demulsification deoiling device of claim 1, which is characterized in that: and a manhole cover is arranged at the top of the manhole (20) of the settling tank.