Supercritical extraction equipment for oil sludge

Abstract

The utility model belongs to the technical field of oil sludge extraction, and particularly relates to oil sludge supercritical extraction equipment which comprises a collecting cylinder, the top of the collecting barrel is fixedly connected with a fixed plate; a fixing ring is mounted at the end part of the fixing plate; the top of the fixed plate is fixedly connected with a top plate; the end part of the fixing ring is fixedly connected with a supercritical extraction equipment body; oil sludge is placed in a supercritical extraction equipment body, then an electric push rod is opened to drive a motor and a sealing cover plate to slide towards the bottom, so that the sealing cover plate is attached to the surface of the supercritical extraction equipment body, and then a rotating rod and a stirring rod are driven to be inserted into the supercritical extraction equipment body; the electric push rod is opened to drive the rotating rod to rotate, so that the rotating rod drives the stirring rod to stir the oil sludge in the supercritical extraction equipment body, the extraction agent and the oil sludge are fully mixed, and the oil sludge extraction effect of the supercritical extraction equipment body is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil sludge extraction, and specifically relates to an oil sludge supercritical extraction device. Background Technique

[0002] By contacting the supercritical fluid with the crude oil components in the oily sludge, the crude oil components are extracted, and the supercritical fluid is changed into a common gas by means of isothermal pressure reduction or isobaric temperature increase, so as to realize the separation of the extractant and the substance to be separated.

[0003] The oil sludge supercritical extraction device is mainly used to treat the oily sludge generated during the process of oil exploration and development. These sludges have complex components, including residual oil, high molecular polymers, sulfur-containing compounds, inorganic minerals, etc.; through the supercritical extraction technology, the crude oil components in the sludge can be effectively extracted, the resource recycling can be realized, and the environmental pollution can be reduced.

[0004] At present, in the prior art, when extracting oil sludge by means of supercritical extraction and adding an extractant, since the oil sludge accumulates together, it will cause the extractant to be difficult to mix with the oil sludge, thereby reducing the extraction efficiency of the oil sludge; therefore, an oil sludge supercritical extraction device is proposed for the above problems. Content of the Utility Model

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background technique, the utility model proposes an oil sludge supercritical extraction device.

[0006] The technical solution adopted by the utility model to solve its technical problems is: an oil sludge supercritical extraction device described in the utility model includes a collection cylinder; a fixing plate is fixedly connected to the top of the collection cylinder; a fixing ring is installed at the end of the fixing plate; a top plate is fixedly connected to the top of the fixing plate; a supercritical extraction device body is fixedly connected to the end of the fixing ring; an electric push rod is fixedly connected to the bottom of the top plate; a motor is fixedly connected to the bottom of the electric push rod; a sealing cover plate is fixedly connected to the end of the motor; a rotating rod is fixedly connected to the output end of the motor; stirring rods are fixedly connected to both sides of the rotating rod.

[0007] Preferably, a flow combing net plate is fixedly connected to the end of the stirring rod, and the end of the flow combing net plate is in an isosceles trapezoid shape.

[0008] Preferably, a scraping plate is fixedly connected to the end of the stirring rod, and the scraping plate is attached to the inner side wall of the supercritical extraction device body.

[0009] Preferably, a spiral blade is fixedly connected to the end of the rotating rod.

[0010] Preferably, a sealing gasket is fixedly connected to the bottom of the sealing cover plate and is attached to the wall of the supercritical extraction device body.

[0011] Preferably, a filter screen is fixedly connected to the inner side wall of the collection cylinder; support legs are fixedly connected to the bottom of the collection cylinder; and a support plate is fixedly connected to the bottom of the support legs.

[0012] Advantages of the present utility model:

[0013] 1. The present utility model provides an oil sludge supercritical extraction device. By placing the oil sludge inside the supercritical extraction device body, then driving the motor and the sealing cover plate to slide downward by opening the electric push rod, so that the sealing cover plate fits on the surface of the supercritical extraction device body, and then driving the rotating rod and the stirring rod to insert into the supercritical extraction device body. During the extraction process, by opening the electric push rod to drive the rotating rod to rotate, the rotating rod drives the stirring rod to stir the oil sludge inside the supercritical extraction device body, facilitating the full mixing of the extraction agent and the oil sludge, and improving the extraction effect of the supercritical extraction device body on the oil sludge.

[0014] 2. The present utility model provides an oil sludge supercritical extraction device. When the stirring rod rotates, it drives the flow combing net plate to rotate to stir and filter the oil sludge, enabling the full mixing of the oil sludge and the extraction agent, and improving the extraction efficiency of the oil sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present utility model and form a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0016] Figure 1 is a perspective view of the present utility model;

[0017] Figure 2 is a cross-sectional view of the present utility model;

[0018] Figure 3 is a perspective view of the scraper in the present utility model;

[0019] Figure 4 is Figure 2 the enlarged view at A in

[0020] Legend:

[0021] 1. Collection cylinder; 21. Fixed plate; 22. Fixed ring; 23. Top plate; 24. Electric push rod; 25. Motor; 26. Sealing cover plate; 27. Supercritical extraction device body; 28. Rotating rod; 29. Stirring rod; 31. Flow combing net plate; 32. Scraper; 33. Spiral blade; 4. Filter screen; 5. Sealing gasket; 61. Support leg; 62. Support plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0023] The following gives specific embodiments.

[0024] Please refer to Figures 1-4 , the present utility model provides a supercritical extraction device for oily sludge, including a collection cylinder 1; a fixed plate 21 is fixedly connected to the top of the collection cylinder 1; a fixing ring 22 is installed at the end of the fixed plate 21; a top plate 23 is fixedly connected to the top of the fixed plate 21; a supercritical extraction device body 27 is fixedly connected to the end of the fixing ring 22; an electric push rod 24 is fixedly connected to the bottom of the top plate 23; a motor 25 is fixedly connected to the bottom of the electric push rod 24; a sealing cover plate 26 is fixedly connected to the end of the motor 25; a rotating rod 28 is fixedly connected to the output end of the motor 25; stirring rods 29 are fixedly connected to both sides of the rotating rod 28; during operation, when supercritical extraction of oily sludge is required, the oily sludge is placed inside the supercritical extraction device body 27, and then the electric push rod 24 is opened to drive the motor 25 and the sealing cover plate 26 to slide downward, so that the sealing cover plate 26 fits on the surface of the supercritical extraction device body 27, and then the rotating rod 28 and the stirring rods 29 are driven to insert into the supercritical extraction device body 27. During the extraction process, the electric push rod 24 is opened to drive the rotating rod 28 to rotate, so that the rotating rod 28 drives the stirring rods 29 to stir the oily sludge inside the supercritical extraction device body 27, facilitating the full mixing of the extraction agent and the oily sludge, and improving the extraction effect of the supercritical extraction device body 27 on the oily sludge.

[0025] Furthermore, as Figures 3-4 shown, a flow combing net plate 31 is fixedly connected to the end of the stirring rod 29, and the end of the flow combing net plate 31 is in an isosceles trapezoid shape; during operation, when the stirring rod 29 rotates, it drives the flow combing net plate 31 to rotate to stir and filter the oily sludge, so that the oily sludge and the extraction agent are fully mixed to improve the extraction efficiency of the oily sludge.

[0026] Furthermore, as Figures 2-3As shown, a scraper 32 is fixedly connected to the end of the stirring rod 29, and the scraper 32 is attached to the inner side wall of the supercritical extraction equipment body 27. During operation, when the stirring rod 29 rotates, it drives the scraper 32 to rotate, so that when the scraper 32 rotates, it scrapes the inner side wall of the supercritical extraction equipment body 27, reducing the adhesion of sludge to the inner side wall of the supercritical extraction equipment body 27 during the extraction process and reducing the extraction effect of the supercritical extraction equipment body 27 on the sludge.

[0027] Furthermore, as Figures 2-4 shown, a spiral blade 33 is fixedly connected to the end of the rotating rod 28. During operation, when the sludge extraction is completed and discharged, by opening the discharge pipe at the bottom of the supercritical extraction equipment body 27, the rotating rod 28 rotates to drive the spiral blade 33 to rotate, so as to stir and convey the discharged sludge, reducing the problem of blockage caused by excessive sludge accumulation.

[0028] Furthermore, as Figures 2-3 shown, a sealing gasket 5 is fixedly connected to the bottom of the sealing cover plate 26 and is attached to the wall of the supercritical extraction equipment body 27. During operation, when the sealing cover plate 26 moves downward to cover the top of the supercritical extraction equipment body 27, the sealing gasket 5 is attached to the two side walls at the top of the supercritical extraction equipment body 27 to achieve a sealing effect.

[0029] Furthermore, as Figures 1-2 shown, a filter screen 4 is fixedly connected to the inner side wall of the collection cylinder 1. During operation, by installing the filter screen 4 on the inner side wall of the collection cylinder 1, the discharged sludge residue is filtered.

[0030] Furthermore, as Figures 1-2 shown, a support leg 61 is fixedly connected to the bottom of the collection cylinder 1; a support plate 62 is fixedly connected to the bottom of the support leg 61. During operation, by installing the support leg 61 and the support plate 62, the overall stability of the collection cylinder 1 is improved.

[0031] Working principle: When supercritical extraction of oil sludge is required, place the oil sludge inside the supercritical extraction equipment body 27. Then, by turning on the electric push rod 24, drive the motor 25 and the sealing cover plate 26 to slide downward, so that the sealing cover plate 26 fits on the surface of the supercritical extraction equipment body 27. Then drive the rotating rod 28 and the stirring rod 29 to insert into the supercritical extraction equipment body 27. During the extraction process, by turning on the electric push rod 24 to drive the rotating rod 28 to rotate, the rotating rod 28 drives the stirring rod 29 to stir the oil sludge inside the supercritical extraction equipment body 27, facilitating the full mixing of the extraction agent and the oil sludge, and improving the extraction effect of the supercritical extraction equipment body 27 on the oil sludge; when the stirring rod 29 rotates, it drives the flow combing net plate 31 to rotate to stir and filter the oil sludge, enabling the full mixing of the oil sludge and the extraction agent to improve the extraction efficiency of the oil sludge; when the stirring rod 29 rotates, it drives the scraper 32 to rotate, so that when the scraper 32 rotates, it scrapes the inner side wall of the supercritical extraction equipment body 27, reducing the adhesion of the oil sludge to the inner side wall of the supercritical extraction equipment body 27 during the extraction process and lowering the extraction effect of the supercritical extraction equipment body 27 on the oil sludge; when the oil sludge extraction is completed and discharged, by opening the discharge pipe at the bottom of the supercritical extraction equipment body 27, the rotating rod 28 rotates to drive the spiral blade 33 to rotate, stirring and conveying the discharged oil sludge to reduce the problem of blockage caused by excessive accumulation of oil sludge; when the sealing cover plate 26 moves downward to cover the top of the supercritical extraction equipment body 27, the sealing gasket 5 fits on the two side walls at the top of the supercritical extraction equipment body 27 to achieve a sealing effect; by installing a filter screen 4 on the inner side wall of the collection cylinder 1, the discharged oil sludge residue is filtered; by installing support legs 61 and a support plate 62, the overall stability of the collection cylinder 1 is improved.

[0032] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. An oil sludge supercritical extraction device, comprising a collection cylinder (1); characterized in that: A fixed plate (21) is fixedly connected to the top of the collection cylinder (1); a fixing ring (22) is installed at the end of the fixed plate (21); a top plate (23) is fixedly connected to the top of the fixed plate (21); a supercritical extraction equipment body (27) is fixedly connected to the end of the fixing ring (22); an electric push rod (24) is fixedly connected to the bottom of the top plate (23); a motor (25) is fixedly connected to the bottom of the electric push rod (24); a sealing cover plate (26) is fixedly connected to the end of the motor (25); a rotating rod (28) is fixedly connected to the output end of the motor (25); stirring rods (29) are fixedly connected to both sides of the rotating rod (28).

2. The supercritical extraction equipment for sludge according to claim 1, characterized in that: A flow combing net plate (31) is fixedly connected to the end of the stirring rod (29), and the end of the flow combing net plate (31) is in an isosceles trapezoid shape.

3. The supercritical extraction equipment for sludge according to claim 1, characterized in that: A scraping plate (32) is fixedly connected to the end of the stirring rod (29), and the scraping plate (32) is attached to the inner side wall of the supercritical extraction equipment body (27).

4. The supercritical extraction equipment for oily sludge according to claim 1, wherein: A spiral blade (33) is fixedly connected to the end of the rotating rod (28).

5. The supercritical extraction equipment for sludge according to claim 1, characterized in that: A sealing gasket (5) is fixedly connected to the bottom of the sealing cover plate (26), and it is attached to the wall body of the supercritical extraction equipment body (27).

6. The supercritical extraction equipment for sludge according to claim 1, wherein: A filter screen (4) is fixedly connected to the inner side wall of the collection cylinder (1).

7. The supercritical extraction equipment for sludge according to claim 1, wherein: Support legs (61) are fixedly connected to the bottom of the collection cylinder (1); a support plate (62) is fixedly connected to the bottom of the support legs (61).

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