A dirty oil collection tank

Abstract

This invention relates to an oily waste collection tank, comprising a base, an oil collection tank fixedly connected to the top of the base, a steam inlet and a steam outlet at the bottom of the side wall of the oil collection tank, a steam coil at the bottom of the inner cavity of the oil collection tank with its two ends connected to the steam inlet and steam outlet respectively, an air outlet and a pressure relief valve on the top wall of the oil collection tank, an oily waste inlet on the top wall of the oil tank, a chemical inlet on the top wall of the oil tank, a water and oil discharge outlet on the bottom wall of the oil tank, and a tubular bearing seat fixedly connected to the top wall of the oil tank. The bearing seat has a countersunk hole at its top, and a rolling bearing is installed in the countersunk hole, supporting a stirring shaft. This invention can improve the efficiency of subsequent oily waste processing, making the operation more efficient and hygienic.

Description

TECHNICAL FIELD

[0001] The present application relates to a dirty oil storage device, in particular to a dirty oil collecting tank. BACKGROUND

[0002] In the field of petrochemical industry (especially in oil refineries), the "three muds" refer to: 1, oil separation tank sludge: from the bottom of the oil separation tank of the oily wastewater treatment system, mainly composed of heavy oil, silt and water; 2, flotation tank scum: from the air flotation device, usually containing emulsified oil, flocculants and fine suspended solids; 3, excess activated sludge: from the biochemical treatment system, containing microbial metabolites, aged zooglea and a small amount of oil.

[0003] In the prior art, a "three muds device" is used to specifically treat the above-mentioned "three muds" to reduce, stabilize and harmlessly treat these oily sludge, and to recover as much oil as possible therefrom, specifically, the petroleum coke and the recovered dirty oil are mechanically stirred in proportion, and then processed into finished products by a main mixer.

[0004] Due to the limitation of the site, the loader body is relatively large and cannot be flexibly used, the water content in the "three muds" is about 50%-60%, and the existing equipment cannot achieve complete water-oil separation, resulting in cross-flow of sewage, diffusion of odor, and emission of toxic and harmful gases, which seriously affects the on-site hygiene. SUMMARY

[0005] The purpose of the present application is to provide a dirty oil collecting tank which can improve the subsequent dirty oil processing efficiency and make the operation more efficient and sanitary.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A dirty oil collecting tank, comprising a base, a dirty oil collecting tank is fixedly connected to the top of the base, a vapor inlet and a vapor outlet are arranged at the bottom of the side wall of the dirty oil collecting tank, a vapor coil is arranged at the bottom of the inner cavity of the dirty oil collecting tank, the two ends of the vapor coil are connected with the vapor inlet and the vapor outlet respectively, an air outlet is arranged on the top wall of the dirty oil collecting tank, a pressure relief valve port is arranged on the top wall of the dirty oil collecting tank, a dirty oil inlet is arranged on the top wall of the dirty oil collecting tank, a reagent inlet is arranged on the top wall of the dirty oil collecting tank, a water-oil discharge port is arranged on the bottom wall of the dirty oil collecting tank, a bearing seat is fixedly connected to the top wall of the dirty oil collecting tank, the bearing seat is tubular, an installation counterbore is arranged at the top end of the bearing seat, a rolling bearing is installed in the installation counterbore, the rolling bearing supports a stirring shaft, end pieces are fixedly connected to the upper end and the lower end of the stirring shaft, a plurality of stirring rods are connected between the upper end piece and the lower end piece, a motor seat is fixedly connected to the top wall of the dirty oil collecting tank, a stirring motor is fixedly connected to the motor seat, the motor shaft of the stirring motor is coaxially fixedly connected with the stirring shaft, a suction fan is fixedly connected to the top wall of the dirty oil collecting tank, and a suction pipe of the suction fan is connected with the air outlet.

[0007] Specifically, four stirring rods are connected between the upper end piece and the lower end piece, the cross section of the stirring rod is L-shaped, and the four stirring rods are uniformly distributed in the circumferential direction.

[0008] Specifically, the end piece is provided with four through holes which are elliptical and evenly distributed in the circumferential direction.

[0009] Specifically, the lower end of the motor shaft of the stirring motor is coaxially fixed to the upper end of the stirring shaft through a shaft coupling.

[0010] Specifically, the side wall of the oil collecting tank is provided with four vapor inlets which are arrayed.

[0011] Specifically, the top wall of the oil collecting tank is provided with two access channels, and the openings of the access channels are provided with cover plates.

[0012] Specifically, the air extractor is provided with an air inlet pipe section and an air outlet pipe section, and the air inlet pipe section and the air outlet pipe section are both provided with a filler mesh cylinder.

[0013] Specifically, the air inlet pipe section and the air outlet pipe section are both penetrated by a long connecting screw in the axial direction, and the air inlet pipe section and the air outlet pipe section are detachably connected to the main body of the air extractor through the long connecting screw.

[0014] Compared with the prior art, the beneficial effects of the present application are: During the heating of the dirty oil, the stirring motor drives the stirring shaft to rotate, thereby driving the four stirring rods to rotate. The cross section of the stirring rod is L-shaped, thereby being capable of uniformly stirring the dirty oil and fully mixing the dirty oil and the sludge, while avoiding the deposition of the sludge at the bottom of the tank.

[0015] Under the action of heating and stirring, the dirty oil and the demulsifier fully react to realize the water-oil layering, i.e., the separation into a lower dirty water layer and an upper dirty oil layer. The dirty water layer is discharged through the water-oil discharge port, realizing complete oil-water separation, avoiding the influence of water on the subsequent processing of the dirty oil, and making the dirty oil lightweight, thereby improving the subsequent processing efficiency of the dirty oil, while avoiding the cross flow of dirty water in the processing site, making the operation more efficient and sanitary. The dirty oil and the sludge are fully mixed into a paste under the action of stirring, which can be pumped out through the water-oil discharge port.

[0016] During the heating of the dirty oil, harmful gases such as carbon monoxide and sulfur dioxide are generated, which can be extracted by the air extractor, and then collected and sent to the CFB furnace for burning and decomposition, thereby avoiding the overflow of toxic and harmful gases. The air inlet pipe section and the air outlet pipe section of the air extractor are both provided with a filler mesh cylinder which is filled with catalysts and adsorbents for adsorbing and catalyzing the above-mentioned harmful gases, thereby further improving the removal rate of harmful gases. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only show some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0018] Figure 1 It is a perspective view of the dirty oil collecting tank; Figure 2 It is an internal view of the dirty oil collecting tank; Figure 3 It is a view of the stirring shaft and related structure; Figure 4 It is a local enlarged view of the bearing seat; Figure 5 It is an overall view of the air extractor; Figure 6 It is an exploded view of the air extractor.

[0019] In the drawings: 1, oil collecting tank; 101, vapor inlet; 102, vapor outlet; 12, gas outlet; 13, dirty oil inlet; 14, agent inlet; 15, water-oil discharge port; 16, bearing seat; 161, mounting counterbore; 17, rolling bearing; 18, access passage; 19, pressure relief valve port; 21, stirring shaft; 22, end piece; 23, stirring rod; 24, stirring motor; 25, coupling; 3, air extractor; 31, gas inlet pipe section; 32, gas outlet pipe section; 33, filler net cylinder; 34, long strip connecting screw. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0021] See Figures 1 to 2 A dirty oil collecting tank, comprising a base, the top of the base is fixedly connected with an oil collecting tank 1, the side wall of the oil collecting tank 1 is provided with a vapor inlet 101 and a vapor outlet 102 at the bottom, the inner cavity of the oil collecting tank 1 is provided with a vapor coil (not shown in the figure) at the bottom, the two ends of the vapor coil are connected with the vapor inlet 101 and the vapor outlet 102 respectively. The top wall of the oil collecting tank 1 is provided with a gas outlet 12. The top wall of the oil collecting tank 1 is provided with a pressure relief valve port 19. The top wall of the oil collecting tank 1 is provided with a dirty oil inlet 13. The top wall of the oil tank is provided with an agent inlet 14. The bottom wall of the oil tank is provided with a water-oil discharge port 15.

[0022] In combination with Figure 1 , Figure 4The top wall of the oil collecting tank 1 is fixedly connected with a bearing seat 16, the bearing seat 16 is tubular, the top end of the bearing seat 16 is provided with a mounting counterbore 161, and the rolling bearing 17 is mounted in the mounting counterbore 161. The rolling bearing 17 supports the stirring shaft 21, the upper end and the lower end of the stirring shaft 21 are fixedly connected with end plates 22, and a plurality of stirring rods 23 are connected between the upper end plate 22 and the lower end plate 22. The top wall of the oil collecting tank 1 is fixedly connected with a motor seat, the motor seat is fixedly connected with a stirring motor 24, and the motor shaft of the stirring motor 24 is coaxially fixedly connected with the stirring shaft 21.

[0023] See Figure 1 The top wall of the oil collecting tank 1 is fixedly connected with an exhaust fan 3, and an exhaust pipe of the exhaust fan 3 is connected with the gas outlet 12.

[0024] Specifically, see Figure 3 The upper end plate 22 and the lower end plate 22 are connected with four stirring rods 23, the cross section of the stirring rod 23 is L-shaped, and the four stirring rods 23 are uniformly distributed in the circumferential direction.

[0025] Specifically, see Figure 3 The end plate 22 is provided with four through holes, the through holes are oval-shaped, and the four through holes are uniformly distributed in the circumferential direction.

[0026] Specifically, in combination with Figure 2 , Figure 3 The lower end of the motor shaft of the stirring motor 24 is coaxially fixedly connected with the upper end of the stirring shaft 21 through a shaft coupling 25.

[0027] Specifically, see Figure 1 The side wall of the oil collecting tank 1 is provided with four steam inlets 101, and the four steam inlets 101 are arranged in an array.

[0028] Specifically, in combination with Figure 1 , Figure 2 The top wall of the oil collecting tank 1 is provided with two access passages 18, and the opening of the access passage 18 is provided with a cover plate.

[0029] Specifically, in combination with Figure 1 , Figure 5 , Figure 6 The exhaust fan 3 is provided with an air inlet pipe section 31 and an air outlet pipe section 32, and the air inlet pipe section 31 and the air outlet pipe section 32 are both provided with a filler screen cylinder 33.

[0030] Specifically, see Figure 5 , Figure 6 The air inlet pipe section 31 and the air outlet pipe section 32 are both penetrated by a long connecting screw 34 in the axial direction, and the air inlet pipe section 31 and the air outlet pipe section 32 are detachably connected with the main body of the exhaust fan 3 through the long connecting screw 34.

[0031] The working principle of the present application is as follows: The waste oil to be treated is input into the oil collecting tank 1 through the waste oil inlet 13, and then the demulsifier is input into the oil collecting tank 1 through the agent inlet 14. Then, the high-temperature steam is input into the steam coil (not shown in the figure) at the bottom of the inner cavity of the oil collecting tank 1 through the steam inlet 101, and then is discharged through the steam outlet 102, so as to heat the waste oil.

[0032] During the heating of the waste oil, the stirring motor 24 drives the stirring shaft 21 to rotate, so as to drive the four stirring rods 23 to rotate. The cross section of the stirring rod 23 is L-shaped, so as to uniformly stir the waste oil, fully mix the waste oil and the sludge, and avoid the sludge from depositing at the bottom of the tank.

[0033] Under the action of heating and stirring, the waste oil fully reacts with the demulsifier, so as to realize the water-oil layering, i.e., the waste water layer at the lower layer and the waste oil layer at the upper layer. The waste water layer is discharged through the water-oil discharge port 15, so as to completely separate the oil and water, avoid the water from affecting the subsequent processing of the waste oil, make the waste oil light, improve the subsequent processing efficiency of the waste oil, avoid the cross flow of the waste water at the processing site, and make the operation more efficient and sanitary. The waste oil and the sludge are fully mixed into a paste under the action of stirring, and can be pumped out through the water-oil discharge port 15.

[0034] In combination with Figure 1 , Figure 5 , Figure 6 , harmful gases such as carbon monoxide and sulfur dioxide are decomposed from the petroleum coke and the waste oil during the heating process. The air extractor 3 can timely extract the harmful gases in the tank, and then collect and send them to the CFB furnace for burning and decomposition, so as to avoid the overflow of the toxic and harmful gases. The air inlet pipe section 31 and the air outlet pipe section 32 of the air extractor 3 are both provided with the filler mesh tube 33 filled with catalysts and adsorbents, which are used for adsorbing and catalyzing the above-mentioned harmful gases, so as to further improve the removal rate of the harmful gases.

[0035] The access channel 18 is used for workers to enter and exit during maintenance. The pressure relief valve port 19 is used for installing the pressure relief valve.

[0036] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as the above preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-mentioned disclosed technical content to obtain equivalent embodiments with equivalent changes, as long as the changes or modifications do not deviate from the technical solution of the present application. Any modification, change, modification and modification of the above-mentioned embodiments according to the technical essence of the present application are still within the scope of the technical solution of the present application.

Claims

1. A slop oil collection tank characterised in that: The base is provided with an oil collecting tank at the top, the side wall of the oil collecting tank is provided with a vapor inlet and a vapor outlet at the bottom, the inner cavity of the oil collecting tank is provided with a vapor coil at the bottom, the two ends of the vapor coil are connected with the vapor inlet and the vapor outlet respectively, the top wall of the oil collecting tank is provided with an air outlet, the top wall of the oil collecting tank is provided with a pressure relief valve port, the top wall of the oil collecting tank is provided with a dirty oil inlet, the top wall of the oil tank is provided with a medicament inlet, the bottom wall of the oil tank is provided with a water and oil discharge port, the top wall of the oil tank is fixedly connected with a bearing seat, the bearing seat is tubular, the top end of the bearing seat is provided with a mounting counterbore, a rolling bearing is mounted in the mounting counterbore, the rolling bearing supports a stirring shaft, the upper end and the lower end of the stirring shaft are fixedly connected with end pieces, a plurality of stirring rods are connected between the upper end piece and the lower end piece, the top wall of the oil collecting tank is fixedly connected with a motor seat, the motor seat is fixedly connected with a stirring motor, the motor shaft of the stirring motor is coaxially fixedly connected with the stirring shaft, the top wall of the oil collecting tank is fixedly connected with an air extractor, and the air extraction pipe of the air extractor is connected with the air outlet.

2. The slop oil collection tank of claim 1, wherein: The upper end piece and the lower end piece are connected with four stirring rods, the cross section of the stirring rod is L-shaped, and the four stirring rods are uniformly distributed in the circumferential direction.

3. The slop oil collection tank of claim 1, wherein: The end piece is provided with four through holes, the through holes are elliptical, and the four through holes are uniformly distributed in the circumferential direction.

4. The slop oil collection tank of claim 1, wherein: The lower end of the motor shaft of the stirring motor is coaxially fixedly connected with the upper end of the stirring shaft through a shaft coupling.

5. The slop oil collection tank of claim 1, wherein: The side wall of the oil collecting tank is provided with four vapor inlets, and the four vapor inlets are arrayed.

6. The slop oil collection tank of claim 1, wherein: The top wall of the oil collecting tank is provided with two access channels, and the opening of the access channel is provided with a cover plate.

7. The slop oil collection tank of claim 1, wherein: The air extractor is provided with an air inlet pipe section and an air outlet pipe section, and the air inlet pipe section and the air outlet pipe section are both provided with a filler mesh cylinder.

8. The slop oil collection tank of claim 7, wherein: The air inlet pipe section and the air outlet pipe section are both axially penetrated by a long connecting screw, and the air inlet pipe section and the air outlet pipe section are detachably connected with the main body of the air extractor through the long connecting screw.

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