A skid-mounted hot-washing and pulping device for oil sludge

Abstract

The utility model belongs to oil and gas field oily sludge treatment technical field, concretely relates to a kind of pry dress formula oil sludge hot washing pulp treatment device.The oil sludge hot washing pulp treatment device, by integrating pulp stirring tank, heating system and dosing device in pry dress box, accurately solve the pain point of existing oily sludge hot washing technology, both guarantee excellent treatment effect, also have high adaptability, provide environmental protection and economic scheme for the comprehensive treatment of oily sludge in petroleum industry.The device adopts integrated pry dress structure, simple structure and convenient to pull and install, perfect adaptation of the use demand of petroleum production field site;Heat source selects electric heating heat conducting oil furnace, can quickly reach set temperature, heat efficiency far exceeds traditional coal-fired, gas heating mode, can significantly save energy.At the same time, its process is simple, easy to operate, can efficiently separate organic components in oil sludge, avoid the problem that separation efficiency is unstable and residue oil content fluctuation is large, and the treatment process is mild, and the environmental impact is small.

Description

Technical Field

[0001] This utility model belongs to the field of oily sludge treatment technology in oil and gas fields, specifically relating to a skid-mounted oily sludge thermal washing and pulping treatment device. Background Technology

[0002] Oily sludge is a complex hazardous waste generated during petroleum production and processing. It contains various components such as oil, solid particles, heavy metals, and moisture, and is characterized by high stability and difficulty in treatment, thus it has been listed in the National Hazardous Waste Inventory. my country generates a huge amount of oily sludge, and direct discharge without proper treatment will cause serious environmental pollution. Currently, although thermal washing technology is widely used due to its advantages such as high oil recovery rate and low cost, some problems still exist in practical engineering applications: First, incomplete heating and stirring lead to uneven mixing of oil and chemicals, resulting in unstable oil-solid phase separation efficiency; second, the oil content of the treated residue often fluctuates greatly, making it difficult to consistently meet the national hazardous waste identification standards, posing a risk of secondary pollution; third, because petroleum production sites are located in outdoor environments, existing treatment equipment is fragmented and inconvenient to transport, failing to meet the actual needs of petroleum production sites.

[0003] Therefore, developing an efficient, stable, and adaptable thermal washing technology for oily sludge is of great significance for improving resource recovery rates, reducing treatment costs, facilitating transportation, and ensuring safe disposal. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a skid-mounted hot washing and pulping treatment device for oily sludge.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A skid-mounted sludge hot washing and pulping treatment device includes a skid-mounted housing, within which are arranged a plurality of pulping mixing tanks. Each pulping mixing tank includes a mixing tank body fixedly connected to the skid-mounted housing. A first agitator for stirring the sludge inside the mixing tank body is fixedly mounted on the top of the mixing tank body. A heating coil is fixedly mounted on the inner wall of the mixing tank body. A heating system and a dosing device for adding chemicals to the mixing tank body are also fixedly mounted inside the skid-mounted housing. The heating coil is connected to the heating system. Each pulping mixing tank is connected to a material conveying device, the outlet of which extends outside the skid-mounted housing body.

[0006] Specifically, the heating system includes a heating furnace body, which is equipped with explosion-proof electric heating tubes. A high-temperature pump is connected to the first liquid outlet at the bottom of the heating furnace body, and the high-temperature pump is connected to the second liquid inlet of the heating coil. The first liquid inlet at the top of the heating furnace body is connected to the second liquid outlet of the heating coil. The heating furnace body is a thermal energy device that uses heat transfer oil as the circulating medium for heating. It directly inserts the explosion-proof electric heating tubes into the organic carrier (heat transfer oil) for direct heating, and circulates the oil in the liquid phase through the high-temperature pump. The heated heat transfer oil is then transported to the heating coil, and then returns to the heating furnace body through the second liquid outlet of the heating coil for further heating, forming a complete circulating heating system.

[0007] Furthermore, a first safety valve is provided at the first liquid inlet, and a magnetic level gauge is also provided inside the heating furnace.

[0008] Furthermore, a second safety valve and a first on / off valve are sequentially provided between the first liquid outlet, and a second on / off valve and a hydraulic gauge are sequentially provided between the high-temperature pump and the second liquid inlet.

[0009] Specifically, the second liquid outlet of the heating coil is fixed on the side wall of the mixing tank near the top, and the second liquid inlet of the heating coil is fixed on the side wall of the mixing tank near the bottom.

[0010] Specifically, the first agitator includes an agitator motor fixed at the top center of the mixing tank and a reducer connected to the output shaft of the agitator motor. The output shaft of the reducer is fixedly connected to an agitator shaft via a loose sleeve, which facilitates the disassembly and cleaning of the agitator shaft. The agitator shaft is fixedly provided with double-layer agitator blades. The double-layer agitator blades include a first agitator blade located at the bottom of the mixing tank and a second agitator blade located in the middle of the mixing tank. A baffle plate is also fixedly provided along the circumference of the mixing tank. The heating coil is located between the baffle plate and the mixing tank.

[0011] Specifically, the dosing device includes a solution tank fixed within a skid-mounted housing. The solution tank is equipped with a second stirrer for agitating the chemicals and solution. The dosing device also includes a dispensing port connected to the stirring tank, which is sequentially connected to the solution tank via a valve and a metering pump. Powdered chemicals or liquids are manually or using a lifting device placed into the solution tank. The second stirrer on the solution tank agitates the coagulant solution. Each solution tank is equipped with a manually operated metering pump for automatic dosing. The dosing device can be used to prepare demulsifier, flocculant solutions, and other chemicals.

[0012] Specifically, the side wall of the mixing tank is equipped with a thermometer for detecting the temperature of the sludge and a pressure level gauge for detecting the level of the sludge.

[0013] Specifically, the material conveying device includes a feeding screw pump, which is connected to the discharge port at the bottom of the mixing tank, and the outlet of the feeding screw pump extends to the skid-mounted box body; the feeding screw pump is responsible for pumping the material into the next process for subsequent processing.

[0014] Specifically, each of the aforementioned slurry mixing tanks is equipped with a cover plate on top.

[0015] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: This oil sludge thermal washing and pulping treatment unit precisely addresses the pain points of existing oily sludge thermal washing technologies, ensuring excellent treatment results while possessing high adaptability. It provides an environmentally friendly and economical overall solution for the comprehensive treatment of oily sludge in the petroleum industry. The unit adopts an integrated skid-mounted structure, which is simple in design and easy to transport and install, perfectly adapting to the needs of field operations in oil production. The heat source uses an electrically heated thermal oil furnace, which can quickly reach the set temperature, with thermal efficiency far exceeding that of traditional coal and gas heating methods, significantly saving energy and operating costs. At the same time, its process is simple and easy to operate, efficiently separating organic components from oil sludge, avoiding problems such as unstable separation efficiency and large fluctuations in oil content in the residue. Furthermore, the treatment process is gentle, with minimal environmental impact. This unit is of great significance for improving oilfield resource recovery rates, reducing treatment costs, and preventing secondary pollution, providing strong support for environmental protection. Attached Figure Description

[0016] The accompanying drawings are incorporated in and form part of this specification, and together with the description, serve to explain the principles of this invention.

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the slurry mixing tank structure of this utility model; Figure 3 for Figure 2 A sectional view; Figure 4 This is a schematic diagram of the heating system structure of this utility model; Figure 5 This is a schematic diagram of the dosing device of this utility model.

[0019] Wherein: 1 is a skid-mounted housing; 2 is a slurry mixing tank; 21 is a mixing tank body; 22 is a first agitator; 221 is a mixing motor; 222 is a mixing paddle shaft; 223 is a double-layer mixing blade; 23 is a heating coil; 231 is a second liquid inlet; 232 is a second liquid outlet; 24 is a discharge outlet; 25 is a feed inlet; 26 is a baffle plate; 3 is a heating system; 31 is a heating furnace body; 32 is an explosion-proof electric heating tube; 33 is a high-temperature pump; 34 is a first safety valve; 35 is a magnetic level gauge; 36 is a second safety valve; 37 is a first on / off valve; 38 is a second on / off valve; 39 is a hydraulic gauge; 4 is a dosing device; 41 is a solution tank; 42 is a second agitator; 43 is a drug outlet; 44 is a valve; 45 is a metering pump; 5 is a thermometer; 6 is a pressure level gauge; 7 is a feeding and conveying screw pump. Detailed Implementation

[0020] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described below do not represent all embodiments consistent with this invention. Rather, they are merely examples consistent with some aspects of this invention as detailed in the appended claims.

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Example

[0022] See Figure 1-5 As shown, this embodiment provides a skid-mounted sludge hot washing and pulping treatment device, including a skid-mounted housing 1. The skid-mounted housing 1 is equipped with two pulping mixing tanks 2. Each pulping mixing tank 2 includes a mixing tank body 21 fixedly connected to the skid-mounted housing 1. A first agitator 22 for stirring the sludge inside the mixing tank body 21 is fixedly installed on the top of the mixing tank body 21. A heating coil 23 is fixedly installed on the inner wall of the mixing tank body 21. The skid-mounted housing 1 is also equipped with a heating system 3 and a dosing device 4 for adding chemicals to the mixing tank body 21. The heating coil 23 is connected to the heating system 3. Each pulping mixing tank 2 is connected to a material conveying device. The outlet of the material conveying device extends to the outside of the skid-mounted housing 1.

[0023] Specifically, the heating system 3 includes a heating furnace body 31, which contains an explosion-proof electric heating tube 32. A high-temperature pump 33 is connected to the first liquid outlet at the bottom of the heating furnace body 31, and the high-temperature pump 33 is connected to the second liquid inlet 231 of the heating coil 23. The first liquid inlet at the top of the heating furnace body 31 is connected to the second liquid outlet 322 of the heating coil 32. The heating furnace body 31 is a thermal energy device that uses heat transfer oil as the circulating medium for heating. It directly inserts the explosion-proof electric heating tube 32 into the organic carrier (heat transfer oil) for direct heating, and circulates the heated heat transfer oil through the high-temperature pump 33. The heated oil is then transported to the heating coil 23 and returned to the heating furnace body 31 through the second liquid outlet 322 of the heating coil 23 for further heating, forming a complete circulating heating system. The explosion-proof electric heating tube 32 and the high-temperature pump 33 are both controlled by an electrical control box. See [link to relevant documentation]. Figure 4 As shown.

[0024] Furthermore, a first safety valve 34 is provided at the first liquid inlet, and a magnetic level gauge 35 is also provided inside the heating furnace body 31.

[0025] Furthermore, a second safety valve 36 and a first on / off valve 37 are sequentially provided between the first liquid outlet, and a second on / off valve 38 and a hydraulic gauge 39 are sequentially provided between the high-temperature pump 33 and the second liquid inlet.

[0026] Specifically, the second liquid outlet 232 of the heating coil 23 is fixed to the side wall of the mixing tank 21 near the top, and the second liquid inlet 231 of the heating coil 23 is fixed to the side wall of the mixing tank near the bottom.

[0027] Specifically, the first agitator 22 includes a stirring motor 222 fixedly mounted at the top center of the mixing tank 21 and a reducer connected to the output shaft of the stirring motor 221. The output shaft of the reducer is fixedly connected to the stirring paddle shaft 222 via a loose sleeve, which facilitates the disassembly, assembly, and cleaning of the stirring paddle shaft 222. The stirring paddle shaft 222 is fixedly provided with double-layer stirring blades 223. The double-layer stirring blades 223 include a first stirring blade located at the bottom of the mixing tank 21 and a second stirring blade located in the middle of the mixing tank 21. A baffle plate 26 is also fixedly mounted along the inner circumference of the mixing tank 21. The heating coil 23 is located between the baffle plate 26 and the mixing tank 21. See [reference needed]. Figure 2 and 3 As shown.

[0028] Specifically, the dosing device 4 includes a solution tank 41 fixed inside the skid-mounted housing 1. The solution tank 41 is equipped with a second stirrer 42 for stirring the agent and solution. The dosing device 4 also includes a dosing outlet 43 communicating with the stirring tank 21. The dosing outlet 43 is connected to the solution tank 41 in sequence through a valve 44 and a metering pump 45. The powdered or liquid agent is placed into the solution tank 41 manually or by lifting equipment. The second stirrer 42 on the solution tank 41 is used to stir the coagulant solution. Each solution tank 41 is equipped with a manually operated metering pump 45 for automatic dosing. See [link to relevant documentation]. Figure 5 As shown. The dosing device 4 can be used to prepare demulsifiers, flocculants, and other reagents.

[0029] Specifically, the side wall of the mixing tank 21 is equipped with a thermometer 5 for detecting the temperature of the sludge and a pressure level gauge 6 for detecting the level of the sludge.

[0030] Specifically, the material conveying device includes a feeding screw pump 7, which is connected to the discharge port 24 at the bottom of the mixing tank 21, and the outlet of the feeding screw pump 7 extends to the outside of the skid-mounted housing 1; the feeding screw pump 7 is responsible for pumping the material into the next process for subsequent processing.

[0031] Specifically, each of the slurry mixing tanks 2 is equipped with a cover plate on top.

[0032] This embodiment also provides a method for using a skid-mounted sludge hot washing and pulping treatment device, as detailed below: The sludge to be treated is conveyed from the inlet 25 into the mixing tank 21. At the same time, the heating system 3 is turned on to introduce heated heat transfer oil into the heating coil 23. The first agitator 22 is turned on to stir and heat the sludge evenly. The dosing device 4 is turned on to add the required reagent to the solution tank 41 in advance. The second agitator 42 is turned on to stir continuously. The stirred reagent is added into the mixing tank 21 through the outlet 43 using the valve 44. The first agitator 22 continues to stir. After the sludge and reagent are mixed evenly and slurried, it is conveyed from the outlet 24 to the subsequent processing process by the feeding screw pump 7.

[0033] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model.

[0034] It should be understood that this utility model is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A skid-mounted hot washing and pulping treatment device for oily sludge, characterized in that, The system includes a skid-mounted housing (1), which contains several slurry mixing tanks (2). Each slurry mixing tank (2) includes a mixing tank body (21) fixedly connected to the skid-mounted housing (1). A first agitator (22) for stirring the sludge inside the mixing tank body (21) is fixedly installed on the top of the mixing tank body (21). A heating coil (23) is fixedly installed on the inner wall of the mixing tank body (21). The skid-mounted housing (1) also contains a heating system (3) and a dosing device (4) for adding chemicals to the mixing tank body (21). The heating coil (23) is connected to the heating system (3). Each slurry mixing tank (2) is connected to a material conveying device. The outlet of the material conveying device extends to the outside of the skid-mounted housing (1).

2. The skid-mounted sludge hot washing and pulping treatment device according to claim 1, characterized in that, The heating system (3) includes a heating furnace body (31), which is equipped with an explosion-proof electric heating tube (32). A high-temperature pump (33) is connected to the first liquid outlet at the bottom of the heating furnace body (31). The high-temperature pump (33) is connected to the second liquid inlet (231) of the heating coil (23). The first liquid inlet at the top of the heating furnace body (31) is connected to the second liquid outlet (232) of the heating coil (23).

3. The skid-mounted sludge hot washing and pulping treatment device according to claim 2, characterized in that, A first safety valve (34) is provided at the first liquid inlet, and a magnetic level gauge (35) is also provided inside the heating furnace body (31).

4. The skid-mounted sludge hot washing and pulping treatment device according to claim 2, characterized in that, A second safety valve (36) and a first on / off valve (37) are sequentially provided between the first liquid outlet, and a second on / off valve (38) and a hydraulic gauge (39) are sequentially provided between the high temperature pump (33) and the second liquid inlet.

5. The skid-mounted sludge hot washing and pulping treatment device according to claim 1, characterized in that, The second outlet (232) of the heating coil (23) is fixed on the side wall of the mixing tank (21) near the top, and the second inlet (231) of the heating coil (23) is fixed on the side wall of the mixing tank near the bottom.

6. The skid-mounted sludge hot washing and pulping treatment device according to claim 1, characterized in that, The first agitator (22) includes an agitator motor (221) fixed at the top center of the agitator tank (21) and a reducer connected to the output shaft of the agitator motor (221). The output shaft of the reducer is fixedly connected to an agitator shaft (222) via a loose sleeve. The agitator shaft (222) is fixedly provided with double-layer agitator blades (223). The double-layer agitator blades (223) include a first agitator blade located at the bottom of the agitator tank (21) and a second agitator blade located in the middle of the agitator tank (21).

7. The skid-mounted sludge hot washing and pulping treatment device according to claim 1, characterized in that, The dosing device (4) includes a solution tank (41) fixed inside a skid-mounted housing (1). The solution tank (41) is equipped with a second stirrer (42) for stirring the agent and solution. The dosing device (4) also includes a dosing outlet (43) connected to the stirring tank (21). The dosing outlet (43) is connected to the solution tank (41) in sequence through a valve (44) and a metering pump (45).

8. The skid-mounted sludge hot washing and pulping treatment device according to claim 1, characterized in that, The side wall of the mixing tank (21) is equipped with a thermometer (5) for detecting the temperature of the sludge and a pressure level gauge (6) for detecting the level of the sludge.

9. The skid-mounted sludge hot washing and pulping treatment device according to claim 1, characterized in that, The material conveying device includes a feeding screw pump (7), which is connected to the discharge port (24) at the bottom of the mixing tank (21), and the outlet of the feeding screw pump (7) extends to the outside of the skid-mounted box (1).

10. The skid-mounted sludge hot washing and pulping treatment device according to claim 1, characterized in that, Each of the aforementioned slurry mixing tanks (2) is equipped with a cover plate on top.

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