CN111500311A

CN111500311A - Small skid-mounted integrated demulsifier injection device

Info

Publication number: CN111500311A
Application number: CN202010294393.7A
Authority: CN
Inventors: 王达; 冯浦涌; 卢岩; 周福建; 李东元
Original assignee: China University of Petroleum Beijing; Deshi Energy Technology Group Co Ltd
Current assignee: Wang Da; China University of Petroleum Beijing
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-08-07

Abstract

The invention discloses a small skid-mounted integrated demulsifier injection device, which comprises a skid body, wherein a plurality of layered and vertically arranged injection bins are arranged in the skid body, each injection bin is of a flat cuboid structure and is hollow inside, a turbulent flow object is arranged on the bottom surface inside each injection bin, and a plurality of injectors are arranged at the top of each injection bin; a filling bin inlet and a filling bin outlet are formed in the front end and the rear end of the filling bin, the filling bin inlet and the filling bin outlet are respectively connected to a recovery liquid inlet pipe and a recovery liquid outlet pipe, and the recovery liquid inlet pipe and the recovery liquid outlet pipe are connected to the wall surfaces of the corresponding prying bodies; the ejector is connected with an injection pipe, the injection pipe is connected with a demulsifier tank, and the demulsifier tank is arranged on the inner side of the top of the pry body; valves are arranged on the filling bin inlet, the filling bin outlet and the injection pipe. According to the invention, the demulsifier injection device is integrated into the pry body, and the components are reasonably distributed according to the space of the pry body, so that the demulsifiers can be uniformly mixed under the condition of reducing electric mechanisms as much as possible.

Description

Small skid-mounted integrated demulsifier injection device

Technical Field

The invention belongs to the technical field of chemical solvent filling devices, and particularly relates to a demulsifier filling device, in particular to a small skid-mounted integrated demulsifier filling device.

Background

In the drilling and production process of oil fields, demulsifiers are often required to be added for the recovery and use of injected and circulated drilling fluid, old oil and the like, and the demulsification and dehydration of crude oil are realized by adding the demulsifiers, so that the method is the most common crude oil dehydration technology applied in the petroleum industry. The demulsifier realizes the rupture of an emulsion droplet interfacial film and the coalescence and sedimentation of water droplets by being uniformly distributed in the crude oil emulsion, thereby achieving the aim of dehydration. The conventional demulsifier is directly filled in a recovery pipeline without any auxiliary stirring process, so that most demulsifiers are directly fused into the bottom of a pipeline due to the influence of gravity and hydrophilicity, and cannot be effectively dispersed in oil-water emulsion, so that the effective utilization rate of the on-site demulsifier is low. The uniform dispersion of the demulsifier in the crude oil emulsion is realized, and the key for improving the utilization rate of the demulsifier in a mine site is realized. In order to solve the above problems, some research institutions have conducted related research and have achieved certain results, for example, the chinese patent application No. 201710098146.8, a device for recycling and treating aged oil in oil field and a process thereof, discloses a device for realizing deep fusion after stirring and mixing, but due to the fact that the content of solid phase substances in the recycling liquid is high, if a mechanical device is used for stirring, the probability of failure is increased, the friction is large, the energy consumption is increased accordingly, and other prior arts, for example, the processing device of the all-in-one machine for processing oil-containing sewage, the application No. 201310233089.1, have similar problems, the motion structure is complex, and the later maintenance is difficult.

Disclosure of Invention

Aiming at the problems and the defects of the prior art, the invention provides a small skid-mounted integrated demulsifier injection device, which is characterized in that the demulsifier injection device is integrated into a skid body, and reasonably distributed parts are arranged according to the space of the skid body, so that the demulsifiers can be uniformly mixed under the condition of reducing electric mechanisms as much as possible.

The technical scheme of the invention is as follows:

a small skid-mounted integrated demulsifier injection device comprises a skid body, wherein a plurality of injection bins are arranged in the skid body, a longitudinal row is vertically arranged among the plurality of injection bins, each injection bin is of a flat cuboid structure, the interior of each injection bin is hollow, a turbulent flow object is arranged on the bottom surface of the interior of each injection bin, and a plurality of injectors are arranged at the top of each injection bin;

the front end and the rear end of the filling bin are provided with a filling bin inlet and a filling bin outlet, the filling bin inlet and the filling bin outlet are respectively connected to a recovery liquid inlet pipe and a recovery liquid outlet pipe, and the recovery liquid inlet pipe and the recovery liquid outlet pipe are connected to the wall surfaces of the corresponding prying bodies;

the ejector is connected with an injection pipe, the injection pipe is connected with a demulsifier tank, and the demulsifier tank is arranged on the inner side of the top of the pry body;

valves are arranged on the filling bin inlet, the filling bin outlet and the injection pipe.

Furthermore, the turbulent flow objects comprise at least two groups of turbulent flow objects with different sizes, which are respectively used as a first turbulent flow object and a second turbulent flow object, the first turbulent flow object is arranged in the direction close to the inlet of the filling bin, and the second turbulent flow object is arranged in the direction close to the outlet of the filling bin;

the first turbulent flow object and the second turbulent flow object are provided with a plurality of rows, the interval of each row is the same, the ejectors are also provided with a plurality of rows, each row comprises at least 2 ejectors, and the ejectors are only arranged in the area above the first turbulent flow object and are opposite to the interval of each row of the first turbulent flow object;

the adjacent rows of injectors are also staggered in interval.

Furthermore, the first turbulence material and the second turbulence material are a plurality of hemispheroids and are fixed at the bottom of the filling bin, the diameter of the hemispheroid of the second turbulence material is larger than that of the first turbulence material, and the first turbulence material and the second turbulence material which are adjacently arranged are arranged in a staggered mode.

Furthermore, the first turbulence objects and the second turbulence objects are wave strips with semi-arc cross sections and are fixed at the bottom of the filling bin, the diameter of the semi-arc cross section of each second turbulence object is larger than that of the first turbulence object, and the waves between the first turbulence objects and the second turbulence objects which are adjacently arranged are the same in shape.

Furthermore, a baffle plate is arranged at the position, corresponding to the position above the second turbulent flow object, on the upper side of the inner wall of the filling bin.

Furthermore, the baffle plate is of a continuous linear wave-shaped structure, and the adjacent two linear wave-shaped structures are the same.

Furthermore, the baffle plate is of an intermittent linear wave structure, and two adjacent linear wave structures are symmetrical.

Further, the filling bin comprises a bin body, and the bin body is of a side opening structure; a drawer plate is arranged in the bin body, the side face of the drawer plate is as high as the outside of the bin body, four sides of the side face of the drawer plate are provided with connecting bolts and connected with the side face of the bin body, the drawer plate further comprises a main board which is as long as the inside of the bin body, spoilers are arranged on the main board of the drawer plate, three sides of the bin body, which correspond to the transverse direction of the main board of the drawer plate, are provided with sealing gaskets, four sides of the opening end of the bin body are also provided with sealing gaskets, and the drawer plate is fixed through the connecting bolts to realize the; the corresponding pry body wall surface of the drawer plate is also provided with an opening. The drawer plate can be taken out directly from the pry body to clean the solid-phase residue inside.

Further, the sprayer comprises a pipe body and a spray head, wherein the spray head is an elongated shower head. Ensuring that the demulsifier can disperse and spray.

Further, demulsifier tank deck portion is equipped with the demulsifier and adds the mouth, and the demulsifier jar is the cuboid structure, and its inside direction of keeping away from the filling tube is equipped with the piston, is equipped with piston thrust unit behind the piston.

The invention has the advantages that:

(1) the uniform addition of the demulsifier is realized by designing a whole set of devices, and no electric device is arranged in an addition area, so that the problems that the maintenance cost is increased and the like due to the fact that electric mechanisms such as an injection stirrer and the like in the prior art are easy to break down are solved;

(2) by arranging the spoilers with different sizes, the fluctuation of the recovered liquid can be increased, and the spoilers are uniformly mixed with the sprayed demulsifier in the flowing process and are mixed for multiple times, so that a better mixing effect is realized;

(3) by arranging the multiple layers of filling bins, the thickness of each layer is reduced, comprehensive mixing can be better realized, and the problem that partial oil-water mixture cannot be stirred and contacted in a large tank is avoided;

(4) the pipelines in front of and behind the filling bin are converged into one pipeline, so that the number of the pipelines connected with the filling bin is reduced, and the recycled liquid is convenient to enter and exit;

(5) the sprayer is arranged on the first turbulent flow object, so that the liquid with small turbulent flow degree can obtain enough demulsifier, and the baffle plate is arranged on the second turbulent flow object, so that the liquid with large turbulent flow degree can be fully, horizontally and vertically stirred, and further mixed;

(6) valves are arranged on the pipelines, so that the control is convenient, a part of filling bins are selected to work, and other filling bins can clean solid-phase sediments;

(7) the filling bin is of a structure which can be disassembled laterally, and the prying body is also provided with a corresponding opening, so that solid phase deposits in the prying body can be removed irregularly;

(8) set up the demulsifier at demulsifier tank deck portion and add the mouth, be convenient for add the demulsifier, and set up piston and piston thrust unit at the demulsifier jar, make it can be when pouring into the demulsifier, direct propelling movement is poured into, reduces adhesion and remains.

Drawings

FIG. 1 is a schematic diagram of the internal structure of an embodiment of a small skid-mounted integrated demulsifier injection apparatus of the present invention;

FIG. 2 is a right side view of the filling cartridge of FIG. 1;

FIG. 3 is a top plan view of one embodiment of the cartridge of FIG. 1;

FIG. 4 is a top plan view of an alternative embodiment of the cartridge of FIG. 1;

FIG. 5 is a bottom view of one embodiment of the cartridge of FIG. 1;

FIG. 6 is a bottom plan view of an alternative embodiment of the cartridge of FIG. 1;

FIG. 7 is a cross-sectional view of the injector of FIG. 1;

fig. 8 is a cross-sectional view of any of the particular filling cartridges of fig. 2.

In the figure:

1 prying body, 2 supports, 3 filling bins, 4 spoilers I, 5 spoilers II, 6 baffle plates, 7 ejectors, 8 injection pipes, 9 valves, 10 recovered liquid inlet pipes, 11 recovered liquid outlet pipes, 12 demulsifier tanks, 13 pistons, 14 piston pushing devices, 15 injection branch pipes, 16 filling bin outlets, a pump, a,

31 bin bodies, 32 drawer plates, 33 sealing gaskets, 34 connecting bolts,

71 a spray head,

711 ejection port,

121 demulsifier addition port.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

As shown in fig. 1-2, a small skid-mounted integrated demulsifier injection device comprises a skid body 1, wherein a plurality of injection bins 3 are arranged in the skid body 1, the plurality of injection bins 3 are layered and vertically arranged in a longitudinal row and are fixed by a support 2, the injection bins 3 are flat cuboid structures, the interiors of the injection bins are hollow, spoilers are arranged on the bottom surface in the injection bins 3, and a plurality of injectors 7 are arranged at the tops of the injection bins 3; the front end and the rear end of the filling bin 3 are provided with a filling bin 3 inlet and a filling bin outlet 16, the filling bin 3 inlet and the filling bin outlet 16 are respectively connected to a recovery liquid inlet pipe 10 and a recovery liquid outlet pipe 11, and the recovery liquid inlet pipe 10 and the recovery liquid outlet pipe 11 are connected to the wall surface of the corresponding prying body 1; the ejector 7 positioned at the topmost layer is connected with an injection pipe 8, and the lower part of the injection pipe 8 is connected to the lower filling bin 3 through an injection branch pipe 15 arranged on the side surface of each layer of filling bin 3; the injection pipe 8 is connected with a demulsifier tank 12; the demulsifier tank 12 is arranged on the inner side of the top of the pry body 1; valves 9 are arranged on the inlet of the filling bin 3, the outlet 16 of the filling bin and the injection pipe 8. The flow disturbing objects comprise a first flow disturbing object 4 and a second flow disturbing object 5, the first flow disturbing object 4 is arranged in the direction close to the inlet of the filling bin 3, the second flow disturbing object 5 is arranged in the direction close to the outlet 16 of the filling bin, and the diameter of the first flow disturbing object 4 is two thirds of that of the second flow disturbing object 5;

the first turbulent flow object 4 and the second turbulent flow object 5 are both provided with 3-5 rows, the interval of each row is the same, the ejectors 7 are also provided with a plurality of rows, 4-6 ejectors 7 are arranged in each row, and the ejectors 7 are only arranged in the area above the first turbulent flow object 4 and are opposite to the interval of each row of the first turbulent flow object 4; the adjacent rows of injectors 7 are also staggered with respect to each other. Demulsifier jar 12 top is equipped with demulsifier and adds a mouthful 121, is convenient for add, and demulsifier jar 12 is the cuboid structure, and its inside direction of keeping away from injection pipe 8 is equipped with piston 13, is equipped with piston thrust unit 14 behind piston 13. The piston pushing device 14 may be an electric push rod, or may be a hydraulic pushing mechanism.

As shown in fig. 3, in a preferred embodiment, the first turbulent flow objects 4 and the second turbulent flow objects 5 are a plurality of hemispheroids fixed at the bottom of the filling bin 3, the diameter of the hemispheroid of the second turbulent flow object 5 is larger than that of the first turbulent flow object 4, and the first turbulent flow objects 4 and the second turbulent flow objects 5 which are adjacently arranged are staggered. By adopting the structure, the stirring device is suitable for the recovery liquid with relatively less solid-phase substances and higher oil-water mixing degree, so that the stirring is more uniform.

As shown in fig. 4, in another preferred embodiment, the first spoiler 4 and the second spoiler 5 are wave strips with semi-circular cross sections, and are fixed at the bottom of the filling bin 3, the diameter of the semi-circular cross section of the second spoiler 5 is larger than that of the first spoiler 4, and the waves between the first spoiler 4 and the second spoiler 5 which are adjacently arranged are the same in shape. By adopting the structure, the device is suitable for the recovery liquid with relatively more solid-phase substances, so that the solid-phase substances are left by stages and the later-stage recovery treatment is facilitated.

And a baffle plate 6 is arranged at the upper side of the inner wall of the filling bin 3 corresponding to the position above the second turbulent flow object 5.

In a preferred embodiment, as shown in fig. 5, the baffle 6 has a continuous straight-line wave structure, and two adjacent straight-line wave structures are identical. The method is suitable for the condition of low filling quantity of the demulsifier.

In another preferred embodiment, as shown in fig. 6, the baffle 6 has an intermittent linear wave structure, and two adjacent linear wave structures are symmetrical. The method is suitable for the condition that the filling amount of the demulsifier is large.

As shown in fig. 7, the filling bin 3 comprises a bin body 31, and the bin body 31 has a side opening structure; a drawer plate 32 is arranged in the bin body 31, the side face of the drawer plate 32 is as high as the outside of the bin body 31, four sides of the side face of the drawer plate 32 are provided with connecting bolts 34 and are connected with the side face of the bin body 31, the drawer plate 32 further comprises a main board which is as long as the inside of the bin body 31, spoils are arranged on the main board of the drawer plate 32, the bin body 31 is provided with sealing gaskets 33 on three transverse faces corresponding to the main board of the drawer plate 32, the four sides of the open end of the bin body 31 are also provided with the sealing gaskets 33, and the drawer plate 32 is fixed by the connecting bolts 34 to seal the bin body 31; an opening is also formed on the wall surface of the pry body 1 corresponding to the drawer plate 32. The drawer plate 32 is convenient to directly take out solid-phase residues inside the cleaning from the pry body 1.

As shown in fig. 8, the injector 7 includes a pipe body, a nozzle 71, and the nozzle 71 is an elongated shower head having a plurality of injection ports 711. Ensuring that the demulsifier can disperse and spray.

The prying body 1 has the outer dimension of 2m in length, 1.5m in width and 1.2m in height, and the weight does not exceed 1T under the no-load condition, so that the prying body 1 is convenient to transport by a small truck and is convenient to operate and use on the oil field site.

The invention has the following use modes:

selecting a structure required by a specific implementation mode as required, completing the connection and assembly of the whole device, respectively connecting a recovery liquid inlet pipe 10 and a recovery liquid outlet pipe 11 to a liquid supply device and a recovery storage device (or a processing device in the next step), opening a front valve 9 and a rear valve 9 of a required filling bin 3, enabling the recovery liquid to slightly move up and down under the action of a first turbulent flow object 4 without impacting a spray head 71 after the recovery liquid enters the filling bin 3 (the speed is not more than 1m/s), pushing a demulsifier to be sprayed on the recovery liquid through the spray head 71 by a piston 13 at the moment to enable the recovery liquid to be primarily fused and stirred, further moving the recovery liquid to a second turbulent flow object 5 and to move up and down to a greater extent, enabling the baffle plate 6 to move left and right, fully stirring and mixing, and finally fusing and converging the.

After a certain time, the valves 9 at the front and the rear of the filling bin 3 are closed, the filling bin 3 is opened, the drawer plate 32 is taken out, solid-phase residues in the drawer plate are cleaned, and the drawer plate is assembled again and put into use again.

When the demulsifier is insufficient, the construction is suspended, the piston 13 is moved to the initial position, and the filling construction is carried out again after a new demulsifier is added.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A small skid-mounted integrated demulsifier injection device is characterized by comprising a skid body, wherein a plurality of injection bins are arranged in the skid body, the plurality of injection bins are layered and vertically arranged in a longitudinal row, each injection bin is of a flat cuboid structure, the interior of each injection bin is hollow, a turbulent flow object is arranged on the bottom surface of the interior of each injection bin, and a plurality of ejectors are arranged at the top of each injection bin;

a filling bin inlet and a filling bin outlet are formed in the front end and the rear end of each filling bin, the filling bin inlet and the filling bin outlet are respectively connected to a recovery liquid inlet pipe and a recovery liquid outlet pipe, and the recovery liquid inlet pipe and the recovery liquid outlet pipe are connected to the wall surface of the corresponding pry body;

the injector positioned at the topmost layer is connected with an injection pipe, the injection pipe is connected with a demulsifier tank, the demulsifier tank is arranged on the inner side of the top of the pry body, and the lower part of the injection pipe is connected with the injectors of each layer of injection bins positioned below the topmost layer injection bin through injection branch pipes;

2. The small skid-mounted integrated demulsifier injection device of claim 1, wherein the spoilers comprise at least two groups of spoilers with different sizes, which are respectively used as a first spoiler and a second spoiler, the first spoiler is arranged in the direction close to the inlet of the filling bin, and the second spoiler is arranged in the direction close to the outlet of the filling bin;

the adjacent rows of injectors are also staggered in interval.

3. The small skid-mounted integrated demulsifier injection device of claim 2, wherein the first turbulator and the second turbulator are hemispheres and fixed to the bottom of the injection bin, and the diameter of the hemispheres of the first turbulator is greater than that of the hemispheres of the first turbulator, and the first turbulator and the second turbulator which are adjacently arranged are staggered.

4. The small skid-mounted integrated demulsifier injection device of claim 2, wherein the first spoiler and the second spoiler are wave bars with semi-circular cross-sections and are fixed to the bottom of the injection silo, the semi-circular cross-section diameter of the second spoiler is larger than that of the first spoiler, and the waves of the first spoiler and the second spoiler in adjacent rows have the same shape.

5. The small skid-mounted integrated demulsifier injection device of claim 3 or 4, wherein a baffle plate is arranged at the upper side of the inner wall of the injection bin corresponding to the position above the second spoiler.

6. The small skid-mounted integrated demulsifier injection device of claim 5, wherein the baffle plate has a continuous linear wave structure, and two adjacent linear wave structures are the same.

7. The small skid-mounted integrated demulsifier injection device of claim 5, wherein the baffle plate has an intermittent linear wave-shaped structure, and two adjacent linear wave-shaped structures are symmetrical.

8. The small skid-mounted integrated demulsifier injection device of claim 7, wherein the filling bin comprises a bin body, and the bin body has a side opening structure; a drawer plate is arranged in the bin body, the side face of the drawer plate is as high as the outside of the bin body, four sides of the side face of the drawer plate are provided with connecting bolts and connected with the side face of the bin body, the drawer plate further comprises a main board as long as the inside of the bin body, the spoilers are mounted on the main board of the drawer plate, three transverse faces of the main board corresponding to the drawer plate are provided with sealing gaskets, four sides of the open end of the bin body are also provided with sealing gaskets, and the drawer plate is fixed through the connecting bolts to realize the sealing of the bin body; the drawer plate is provided with an opening on the wall surface of the pry body corresponding to the drawer plate, so that the drawer plate can be conveniently and directly taken out from the pry body to clean the solid-phase residues inside.

9. The portable skid-mounted integrated demulsifier injector of claim 1, wherein the injector comprises a pipe body and a nozzle, and the nozzle is an elongated showerhead.

10. The small skid-mounted integrated demulsifier injection device of claim 1 wherein the top of the demulsifier tank is provided with a demulsifier addition port, the demulsifier tank is of a cuboid structure, a piston is arranged in the demulsifier tank in a direction away from the injection pipe, and a piston pushing device is arranged behind the piston.