Complete equipment for treating oily sewage in oil refinery

Abstract

The utility model discloses oil refinery oily sewage treatment complete equipment which comprises an oil-water separation barrel, an inner barrel is arranged in the oil-water separation barrel, the upper portion of the left side of the inner barrel is communicated with an oil discharge pipe, the bottom of the right side of the inner barrel is communicated with a water discharge pipe, and the bottom of the inner barrel is communicated with a sewage discharge pipe. The top of the inner cylinder is communicated with an oil inlet pipe, the top of the oil-water separation cylinder is fixedly provided with an electric push rod through a mounting frame, and the output end of the electric push rod penetrates through and extends into the inner cylinder. According to the oil refinery oily sewage treatment complete equipment, the inner cylinder is heated through the spiral electric heating pipe, so that greasy dirt adhered to the inner wall of the first oil separation tank is liquefied, the greasy dirt is convenient to clean, the electric heating pipe is not in direct contact with the inner cylinder, and heat is transferred through heat preservation water, so that the temperature in the inner cylinder is not too high during heating, and oil is prevented from reacting due to high temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to a complete set of equipment for treating oily sewage in an oil refinery. Background Art

[0002] At present, the market is facing a very large amount of oily wastewater discharge. If the oily wastewater is discharged directly without treatment, it will not only cause a large amount of energy waste, but also cause great pollution to the surrounding water bodies. The equipment currently used for oily wastewater treatment on the market has a relatively low treatment efficiency for oily wastewater, and the wastewater at the discharge point will also contain organic matter, suspended matter and other impurities. If it is discharged directly, it will not meet the requirements of new water sources or reuse.

[0003] A utility model with patent number CN212532522U disclosed a drilling fluid sampling device for oil drilling projects, which heats the inside of a first oil separator tank through a first heating tube to liquefy the oil stains stuck on the inner wall of the first oil separator tank, and heats the inside of a second oil separator tank through a second heating tube to liquefy the oil stains stuck on the inner wall of the second oil separator tank. After the oil stains are liquefied, they flow into a waste oil recovery tank through a pipeline, thereby cleaning the first oil separator tank and the second oil separator tank.

[0004] The above-mentioned prior art has some shortcomings. For example, when in use, heating tube 1 and heating tube 2 are both arranged inside the oil separator. When heated, the surface temperature of heating tube 1 and heating tube 2 is relatively high. Although the fluidity of the oil stains near them can be improved under the action of high temperature, the oil stains produce harmful gases under the action of high temperature, which affect the health of workers when discharged. Secondly, relying solely on the fluidity of the oil stains to discharge them cannot completely clean the inner wall of the oil separator. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a complete set of equipment for treating oily wastewater in an oil refinery to solve the above problems.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a complete set of equipment for treating oily wastewater in an oil refinery, comprising an oil-water separation cylinder, wherein an inner cylinder is arranged inside the oil-water separation cylinder, an upper portion of the left side of the inner cylinder is connected to an oil drain pipe, a bottom portion of the right side of the inner cylinder is connected to a drain pipe, a bottom portion of the inner cylinder is connected to a sewage pipe, a top portion of the inner cylinder is connected to an oil inlet pipe, an electric push rod is fixed to the top of the oil-water separation cylinder through a mounting frame, an output end of the electric push rod passes through and extends to the interior of the inner cylinder, a scraper is fixed to the output end of the electric push rod, and an edge of the scraper is in contact with the side wall of the inner cylinder.

[0007] Preferably, a spiral electric heating tube is arranged between the inner cylinder and the inner wall of the oil-water separation cylinder, and the space between the inner cylinder and the inner wall of the oil-water separation cylinder is also filled with insulation water.

[0008] Preferably, a valve is provided inside the sewage pipe.

[0009] Preferably, the end of the oil drain pipe is connected to a waste oil recovery tank, the end of the drain pipe is connected to an aeration cylinder, one side of the aeration cylinder is connected to a decomposition tank, and one side of the decomposition tank is connected to a clean water tank.

[0010] Preferably, the oil-water separation cylinder, aeration cylinder, waste oil recovery tank, decomposition tank and clean water tank are all installed on the top of the pad.

[0011] Preferably, the clean water tank is provided with a water quality detector and a drainage faucet.

[0012] Beneficial Effects

[0013] The utility model provides a complete set of equipment for treating oily wastewater in an oil refinery. It has the following beneficial effects:

[0014] The refinery's complete set of equipment for treating oily wastewater heats the inner cylinder through spiral electric heating tubes to liquefy the oil stuck on the inner wall of the first oil separator, making it easier to clean the oil. The electric heating tubes do not directly contact the inner cylinder, and heat is transferred through insulating water, so that the temperature inside the inner cylinder will not be too high during heating, preventing the oil from reacting due to high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure inside the oil-water separation tank of the utility model.

[0017] In the figure: 1. Oil-water separation cylinder; 2. Inner cylinder; 3. Spiral electric heating tube; 4. Insulated water; 5. Oil drain pipe; 6. Drain pipe; 7. Sewage pipe; 8. Mounting frame; 9. Electric push rod; 10. Scraper; 11. Valve; 12. Waste oil recovery tank; 13. Aeration cylinder; 14. Decomposition tank; 15. Clean water tank; 16. Pad; 17. Water quality detector; 18. Drain faucet; 19. Oil inlet pipe. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-2The utility model provides a technical solution: a complete set of equipment for treating oily wastewater in an oil refinery, comprising an oil-water separation cylinder 1, an oil-water separation cylinder 1, an inner cylinder 2 is arranged inside the oil-water separation cylinder 1, an upper portion of the left side of the inner cylinder 2 is connected with an oil drain pipe 5, a bottom portion of the right side of the inner cylinder 2 is connected with a drain pipe 6, a bottom portion of the inner cylinder 2 is connected with a sewage pipe 7, a valve 11 is arranged inside the sewage pipe 7, an oil inlet pipe 11 is connected to the top of the inner cylinder 2, an electric push rod 9 is fixed to the top of the oil-water separation cylinder 1 through a mounting frame 8, an output end of the electric push rod 9 penetrates and extends to the inside of the inner cylinder 2, a scraper 10 is fixed to the output end of the electric push rod 9, and an edge of the scraper 10 contacts the side wall of the inner cylinder 2.

[0020] During use, the scraper is pushed downward by the electric push rod 9 to clean the inner wall of the inner cylinder when the scraper moves downward, and then the valve 11 is opened to discharge the oil from the drain pipe 7. Since the oil-beating pipe 5 is located in the upper middle part of the inner cylinder, the oil will be discharged from the oil-beating pipe 5 first during normal use, and there will be no oil leakage at the contact point between the electric push rod 9 and the oil-water separation cylinder.

[0021] A spiral electric heating tube 3 is arranged between the inner tube 2 and the inner wall of the oil-water separation tube 1, and the inner tube 2 and the inner wall of the oil-water separation tube 1 are also filled with insulation water 4. The electric heating tube 3 does not directly contact the inner tube, and heat is transferred through the insulation water, so that when heating, the temperature inside the inner tube 1 will not be too high, thereby avoiding the reaction of the oil due to high temperature.

[0022] The end of the oil drain pipe 5 is connected to the waste oil recovery tank 12, the end of the drain pipe 6 is connected to the aeration cylinder 13, one side of the aeration cylinder 13 is connected to the decomposition tank 14, and one side of the decomposition tank 14 is connected to the clean water tank 15, the clean water tank 15 is provided with a water quality detector 17 and a drainage faucet 18, the oil-water separation cylinder 1, the aeration cylinder 13, the waste oil recovery tank 12, the decomposition tank 14 and the clean water tank 15 are all installed on the top of the pad 16.

[0023] After the oil-water separation, the oil enters the waste oil recovery tank 12, and the deoiled sewage enters the aeration cylinder 13 for oxidation treatment, and then enters the decomposition tank. After the addition of chemicals, a reaction occurs so that the sewage reaches the discharge standard. The purified clean water flows into the clean water tank 15 and is tested by the water quality detector 17 to see if it meets the discharge standard.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A complete set of equipment for treating oily wastewater in an oil refinery, comprising an oil-water separation cylinder (1), characterized in that: The oil-water separation cylinder (1) is provided with an inner cylinder (2) inside the oil-water separation cylinder (1); the upper part of the left side of the inner cylinder (2) is connected to an oil drain pipe (5); the bottom of the right side of the inner cylinder (2) is connected to a drain pipe (6); the bottom of the inner cylinder (2) is connected to a sewage pipe (7); the top of the inner cylinder (2) is connected to an oil inlet pipe (19); an electric push rod (9) is fixed to the top of the oil-water separation cylinder (1) through a mounting frame (8); the output end of the electric push rod (9) penetrates and extends into the interior of the inner cylinder (2); a scraper (10) is fixed to the output end of the electric push rod (9); the edge of the scraper (10) is in contact with the side wall of the inner cylinder (2).

2. The complete equipment for treating oily wastewater in a refinery according to claim 1, characterized in that: A spiral electric heating tube (3) is arranged between the inner cylinder (2) and the inner wall of the oil-water separation cylinder (1), and heat-insulating water (4) is also filled between the inner cylinder (2) and the inner wall of the oil-water separation cylinder (1).

3. The complete equipment for treating oily wastewater in a refinery according to claim 1, characterized in that: A valve (11) is provided inside the sewage discharge pipe (7).

4. The complete equipment for treating oily wastewater in a refinery according to claim 1, characterized in that: The end of the oil drain pipe (5) is connected to a waste oil recovery tank (12), the end of the drain pipe (6) is connected to an aeration cylinder (13), one side of the aeration cylinder (13) is connected to a decomposition tank (14), and one side of the decomposition tank (14) is connected to a clean water tank (15).

5. The complete equipment for treating oily wastewater in a refinery according to claim 1, characterized in that: The oil-water separation cylinder (1), the aeration cylinder (13), the waste oil recovery tank (12), the decomposition tank (14) and the clean water tank (15) are all installed on the top of the pad (16).

6. The complete equipment for treating oily wastewater in a refinery according to claim 4, characterized in that: The clean water tank (15) is provided with a water quality detector (17) and a drainage tap (18).

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