An oily sludge degreasing and drying device and an oily sludge degreasing and drying method

Abstract

The present invention discloses an oily sludge degreasing and drying device, which is applied to the method for degreasing and drying oily sludge by combined microwave and ultrasonic treatment. The oily sludge degreasing and drying device is characterized in that it comprises: a degreasing and drying box body, a microwave system, an ultrasonic system, a stirring system and an oil-water recovery system; wherein, the degreasing and drying box body is provided with a feeding port, a discharging port, an exhaust port and a water outlet; the microwave system comprises a microwave output device arranged at the top of the degreasing and drying box body and a microwave controller electrically connected to the microwave output device; the ultrasonic system comprises a plurality of ultrasonic generating probes arranged on both side surfaces and the bottom surface of the degreasing and drying box body and an ultrasonic controller electrically connected to the ultrasonic generating probes; the oil-water recovery system comprises a steam recovery branch and a wastewater recovery branch; the stirring system comprises a stirring shaft, stirring paddles and a motor. The drying device and method of the present invention can meet the requirements of resource utilization after treating oily solid waste.

Description

Technical Field

[0001] The present invention relates to the field of oil removal and drying, and particularly to an oil sludge oil removal and drying device and an oil sludge oil removal and drying method. Background Art

[0002] Reasonable treatment and disposal of oil-containing solid waste play an important role in reducing environmental pollution. In the resource treatment process of oil-containing solid waste (such as oil sludge and oil sand), oil removal and drying are both key treatment links. The oil-containing solid waste internally adsorbs oil and a large amount of adsorbed and bound water. In the existing common treatment technologies, the chemical oil removal process usually produces secondary pollution, and the physical oil removal and dehydration drying processes consume a large amount of heat energy, with a low overall energy utilization rate.

[0003] In view of these deficiencies of the prior art, therefore, it is very necessary to develop an oil removal and drying technology that improves the oil removal efficiency of the system and is environmentally friendly. Summary of the Invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide an oil sludge oil removal and drying device and an oil sludge oil removal and drying method, which can improve the oil removal efficiency and avoid causing secondary pollution to the environment.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The present invention provides an oil sludge oil removal and drying device, which is characterized by comprising: an oil removal and drying box body, a microwave system, an ultrasonic system, a stirring system, and an oil-water recovery system; wherein, the oil removal and drying box body is provided with a feeding port, a discharging port, an exhaust port, and a water outlet; the microwave system includes a microwave output device arranged at the top of the oil removal and drying box body and a microwave controller electrically connected to the microwave output device; the ultrasonic system includes a plurality of ultrasonic generating probes arranged on both side surfaces and the bottom surface of the oil removal and drying box body and an ultrasonic controller electrically connected to the ultrasonic generating probes; the oil-water recovery system includes a steam recovery branch and a wastewater recovery branch; the steam recovery branch is: the exhaust port is connected to a filtering device through an air outlet pipe, the filtering device is connected to a condenser, and the outlet of the condenser is connected to an oil product recovery device through a liquid outflow pipe; the wastewater recovery branch is: the water outlet is connected to the oil product recovery device through a liquid discharge pipe; the stirring system includes a stirring shaft, stirring paddles, and a motor, the upper end of the stirring shaft is located in the oil removal and drying box body, the stirring paddles are fixed on the stirring shaft, and the motor is arranged at the outer bottom of the oil removal and drying box body, and the motor is used to drive the stirring shaft to rotate.

[0007] Further, in the oily sludge degreasing and drying equipment provided by the present invention, it is characterized in that it further includes: a waste heat utilization system. Wherein, the inside of the stirring shaft is a hollow structure, and a stirring shaft partition is arranged in this hollow structure, and there is a gap between the stirring shaft partition and the top surface of the stirring shaft; the stirring shaft is also connected to a bushing assembly, and the bushing assembly includes an independent inner shaft of the bushing and a bushing housing, and the inner shaft of the bushing is located inside the bushing housing; the inner shaft of the bushing is connected to the lower end of the stirring shaft through a coupling, and a plurality of air holes are provided on the circumferential wall of the inner shaft of the bushing, and an inner shaft partition of the bushing is arranged in the inner shaft of the bushing; the inner wall of the bushing housing is provided with a bushing housing partition, and the left and right side walls of the bushing housing are respectively connected with a waste heat gas inlet and a waste heat gas outlet. The waste heat gas inlet is used to connect to the equipment that generates waste heat gas in an existing factory, and the waste heat gas outlet is used for discharging the waste heat gas after heat exchange.

[0008] Further, in the oily sludge degreasing and drying equipment provided by the present invention, it may further have the following characteristics: wherein, a filter screen is provided at the water outlet.

[0009] Further, in the oily sludge degreasing and drying equipment provided by the present invention, it may further have the following characteristics: wherein, a sound insulation cotton layer is embedded in the box wall of the degreasing and drying box body.

[0010] Further, in the oily sludge degreasing and drying equipment provided by the present invention, it may further have the following characteristics: wherein, a liquid viewing window is provided in the middle of the box wall of the degreasing and drying box body.

[0011] Further, in the oily sludge degreasing and drying equipment provided by the present invention, it may further have the following characteristics: wherein, the filling material in the filtering device is a hydrophilic and oleophobic material.

[0012] Further, in the oily sludge degreasing and drying equipment provided by the present invention, it may further have the following characteristics: wherein, the degreasing and drying box body is also provided with a water replenishing port.

[0013] Further, in the oily sludge degreasing and drying equipment provided by the present invention, it may further have the following characteristics: wherein, the ultrasonic controller and the microwave controller are an integrated ultrasonic / microwave combined controller.

[0014] The present invention also provides an oily sludge degreasing and drying method, which is characterized by including the following steps:

[0015] Step 1, treating the oily sludge by using microwave and mechanical stirring methods, and collecting the steam generated during the treatment process;

[0016] Step 2, treating the oily sludge by using ultrasonic and mechanical stirring methods, and collecting the steam generated during the treatment process;

[0017] Step 3, allowing the sludge treated in step 2 to stand, separating the supernatant from the sediment, and collecting the supernatant;

[0018] Step 4: treating the sediment obtained in step 3 by a combination of microwaves, ultrasound, and mechanical stirring, and collecting steam generated during the treatment process;

[0019] Step 5: After the sediment is dried using the residual heat, it is treated using microwaves and mechanical stirring to obtain waste residue, and the steam generated during the treatment process is collected; or the sediment is directly treated using microwaves and mechanical stirring without the residual heat drying process to obtain waste residue, and the steam generated during the treatment process is collected;

[0020] Step 6: The steam and supernatant collected in all the above steps are combined and then subjected to oil-water separation treatment to obtain recovered oil and wastewater.

[0021] Furthermore, the sludge deoiling and drying method provided by the present invention may also have the following feature: the sludge deoiling and drying method is implemented by the above-mentioned sludge deoiling and drying equipment.

[0022] Beneficial effects of the present invention:

[0023] 1) The oil sludge degreasing and drying equipment of the present invention is equipped with a microwave system, an ultrasonic system, and a stirring system. This equipment can implement a specific oil sludge degreasing and drying method, which includes a degreasing stage and a drying stage. In the degreasing stage, ultrasonic waves and microwaves are used to clean oil from the surface of objects. Microwave treatment reduces oil viscosity and increases the oil-water density difference. Ultrasonic cavitation and mechanical action can disperse and agitate the oil sludge, increasing pore size. Ultrasonic cavitation microjets can effectively remove oil droplets adsorbed on solid surfaces. In addition, the ultrasonic sound pressure gradient can enhance the migration and removal of oil in the pores of the oil sludge. After the degreasing stage, the oil and water supernatant is discharged after standing. The remaining sediment is then dehydrated and dried by the combined action of ultrasound and microwaves. The ultrasonic cavitation effect helps remove bound and adsorbed water into free water, while the ultrasonic mechanical action produces a "sponge squeezing effect" that helps remove free water. In the later stage of drying, the moisture content decreases and the ultrasonic effect weakens. Only microwave heating and stirring are activated, and the water is evaporated and removed by microwave heating. The combination of these two methods effectively improves drying efficiency. The oil sludge deoiling and drying equipment of the present invention can realize the two processing steps of oil sludge deoiling and drying in an integrated manner, effectively improve the processing efficiency, and significantly improve the energy utilization rate.

[0024] 2) The sludge degreasing and drying equipment of the present invention is provided with an oil-water recovery system, which can recover water during the sludge treatment process and be used to collect the treated oil. The recovered oil can be processed and utilized for secondary use, effectively improving resource utilization.

[0025] 3) In the oily sludge degreasing and drying equipment of the present invention, a waste heat utilization system is provided. Before the microwave single drying stage, the waste heat utilization system can be used to heat the material with waste heat, reducing the microwave energy consumption. When using waste heat, the blades of the stirring paddle can play the role of finned heat transfer enhancement.

[0026] 4) A sound insulation cotton layer is embedded in the inner wall of the degreasing and drying box body of the oily sludge degreasing and drying equipment of the present invention, achieving the effect of sound insulation and noise reduction. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of the oily sludge degreasing and drying equipment in the embodiment of the present invention;

[0028] Figure 2 is a schematic flow chart of the oily sludge degreasing and drying method in the embodiment of the present invention;

[0029] Figure 3 is a schematic distribution diagram of the ultrasonic generating probes on the base of the oily sludge degreasing and drying equipment in the embodiment of the present invention;

[0030] Figure 4 is a schematic structural diagram of the stirring system and waste heat utilization system of the oily sludge degreasing and drying equipment in the embodiment of the present invention;

[0031] Figure 5 is Figure 4 the sectional view of the A-A section in

[0032] Figure 6 is a schematic structural diagram of the inner shaft of the shaft sleeve in the embodiment of the present invention.

[0033] In the figure: 1: Degreasing and drying box body; 2: Make-up water pipe; 3: Feed pipe; 4: Ultrasonic generating probe; 5: Control line; 6: Waste heat gas inlet; 7: Ultrasonic / microwave combined controller; 8: Microwave output device; 9: Liquid viewing window; 10: Stirring paddle; 11: Coupling; 12: Stirring shaft; 12a: Stirring shaft partition; B: Detail view of air hole; 13: Sound insulation layer; 14: Shaft sleeve assembly; 14a: Shaft sleeve housing; 14b: Inner shaft of shaft sleeve; 14c: Ventilation space; 14d: Shaft sleeve housing partition; 14e: Inner shaft partition of shaft sleeve; 14f: Air hole; 15: Motor; 16: Filter device; 17: Condenser; 18: Exhaust pipe; 19: Liquid outflow pipe; 20: Filter screen; 21: Valve; 22: Liquid discharge pipe; 23: Discharge pipe; 24: Waste heat gas outlet; 25: Oil product recovery device. Detailed Embodiments

[0034] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the following embodiments will specifically elaborate on the technical solutions of the present invention in conjunction with the drawings.

[0035] Refer to Figure 1 , this embodiment provides an oily sludge degreasing and drying device, which includes: a degreasing and drying box body 1, a microwave system, an ultrasonic system, a stirring system, an oil-water recovery system, and a waste heat utilization system.

[0036] At the upper end of the left side surface of the degreasing and drying box body 1, a feeding port and a water replenishing port are provided, and the water replenishing port is above the feeding port. The water replenishing port is connected to a water replenishing pipe 2, and a valve is provided on the water replenishing pipe 2. The feeding port is connected to a feeding pipe 3, and a valve is provided on the feeding pipe 3. An exhaust port is provided on the top surface of the degreasing and drying box body 1, the exhaust port is connected to an exhaust pipe 18, and a valve is provided on the exhaust pipe 18. At the lower end of the right side surface of the degreasing and drying box body 1, a discharging port is provided, the discharging port is connected to a discharging pipe 23, and a valve is provided on the discharging pipe 23. In the middle of the right side surface of the degreasing and drying box body 1, a water outlet is provided, a filter screen 20 is provided at the water outlet, the water outlet is connected to a liquid discharge pipe 22, and a valve is provided on the liquid discharge pipe 22.

[0037] A sound insulation cotton layer 13 is embedded in the box body wall of the degreasing and drying box body 1. In the middle of the front surface of the box body wall of the degreasing and drying box body 1, a liquid viewing window 9 is provided.

[0038] The microwave system includes a microwave output device 8 arranged at the central position on the top of the degreasing and drying box body 1 and a microwave controller electrically connected to the microwave output device 8.

[0039] The ultrasonic system includes a plurality of ultrasonic generating probes 4 arranged on both side surfaces and the bottom surface of the degreasing and drying box body 1 and an ultrasonic controller electrically connected to the ultrasonic generating probes 4. The ultrasonic generating probes 4 are distributed from top to bottom on both side surfaces of the degreasing and drying box body 1. The distribution of the ultrasonic generating probes 4 on the base of the degreasing and drying box body 1 is as Figure 3 shown, and a plurality of ultrasonic generating probes 4 are evenly distributed within the range of the circular base.

[0040] Preferably, as Figure 1 shown, in this embodiment, the ultrasonic controller and the microwave controller adopt an integrated ultrasonic / microwave combined controller 7.

[0041] The oil-water recovery system includes a steam recovery branch and a waste water recovery branch.

[0042] The steam recovery branch is as follows: The exhaust port is connected to the filtering device 16 through the outlet pipe 18. The filtering device 16 is connected to the condenser 17. The outlet of the condenser 17 is connected to the oil product recovery device 25 through the liquid outflow pipe 19. The filling material in the filtering device 16 is a hydrophilic and oleophobic material. The steam mixture generated during the oil sludge treatment process is discharged from the outlet pipe 18 at the top of the oil removal and drying box body 1, passes through the filtering device 16 to filter and intercept the oil and gas, and then is condensed into a liquid through the condenser 17. The liquid is collected into the oil product recovery device 25 through the liquid outflow pipe 19.

[0043] The wastewater recovery branch is as follows: The water outlet is connected to the oil product recovery device 25 through the liquid discharge pipe 22. The upper clear liquid generated during the oil sludge treatment process is filtered by the filter screen 20 and then collected into the oil product recovery device 25 through the liquid discharge pipe 22.

[0044] Refer to Figure 1 and Figure 4 As shown in

[0045] The waste heat utilization system is used to recover and utilize the waste heat gas generated by other equipment in the factory, and use the waste heat to dry the oil sludge to achieve the reuse of resources. The specific implementation of the waste heat utilization system is as follows: Refer to Figures 4 to 6, the interior of the stirring shaft 12 is a hollow structure, and a stirring shaft partition 12a is arranged in the hollow structure. There is a gap between the stirring shaft 12 partition and the top surface of the stirring shaft 12. The stirring shaft 12 is also connected to the bushing assembly 14. The bushing assembly 14 includes an independent inner bushing 14b and a bushing housing 14a. The inner bushing 14b is located inside the bushing housing 14a, and a ventilation space 14c is formed between the bushing housing 14a and the bushing housing 14a. The inner bushing 14b is connected to the lower end of the stirring shaft 12 through a coupling 11. The inner bushing 14b is connected to the motor shaft of the motor, and the motor drives the inner bushing 14b and the stirring shaft 12 to rotate coaxially. A plurality of air holes 14f are formed on the circumferential wall of the inner bushing 14b, and an inner bushing partition 14e is arranged in the inner bushing 14b. A bushing housing partition 14d is arranged on the inner wall of the bushing housing 14a, and the bushing housing partition 14d does not contact the outer wall of the inner bushing 14b. The slight gap between the bushing housing partition 14d and the inner bushing 14b will not affect the flow and isolation of the waste heat gas. The left and right side walls of the bushing housing are respectively connected with a waste heat gas inlet 6 and a waste heat gas outlet 24. The waste heat gas inlet 6 is used to connect the equipment that generates waste heat gas in the existing factory, and the waste heat gas outlet 24 is used to discharge the waste heat gas after heat exchange. The equipment that generates waste heat gas in the factory can be, for example, the equipment that generates high-temperature flue gas in the factory, and the waste heat gas is the high-temperature flue gas.

[0046] Refer to Figure 2 , the present invention also provides an oily sludge degreasing and drying method, including the following steps:

[0047] Step 1, treat the oily sludge with a moisture content reaching the target moisture content by using microwave and mechanical stirring methods, and collect the steam generated during the treatment process.

[0048] Step 2, treat the oily sludge by using ultrasonic and mechanical stirring methods, and collect the steam generated during the treatment process.

[0049] Step 3, let the oily sludge treated in Step 2 stand, separate the upper clear liquid from the sediment, and collect the upper clear liquid.

[0050] Step 4, treat the sediment obtained in Step 3 by using the combined action of microwave, ultrasonic and mechanical stirring, and collect the steam generated during the treatment process.

[0051] Step 5, after drying the sediment by using waste heat, then treat it by using microwave and mechanical stirring methods to obtain waste residue, and collect the steam generated during the treatment process; or without waste heat drying treatment, directly treat it by using microwave and mechanical stirring methods to obtain waste residue, and collect the steam generated during the treatment process;

[0052] Step 6: The steam and supernatant collected in all the above steps are combined and then subjected to oil-water separation treatment to obtain recovered oil and wastewater.

[0053] In this embodiment, see Figure 1 and Figure 2 The following details the specific implementation of the above-mentioned sludge degreasing and drying method by using sludge degreasing and drying equipment:

[0054] Step 1: Microwave + Mechanical Stirring

[0055] First, the oily sludge to be treated enters the degreasing and drying chamber 1 through the feed pipe 3. Fresh water is then added to the sludge, depending on its moisture content. Insufficient moisture in the sludge can affect the ultrasonic degreasing effect. If the sludge is too dry, the valve of the rehydration pipe 2 is opened and fresh water is added to ensure subsequent ultrasonic degreasing. Next, the valve of the air outlet pipe 18 is opened, and the ultrasonic / microwave combined controller 7 is operated to adjust the microwave power output by the microwave output device 8. The motor 15 is then turned on, and the sludge is treated for a predetermined period of time using microwaves and mechanical stirring. The steam generated during the treatment is collected.

[0056] Under the action of microwave + mechanical stirring, the sludge was pretreated, the viscosity of the oil was reduced, and the density difference between oil and water was increased.

[0057] Step 2: Ultrasonic + Mechanical Stirring

[0058] After step 1, the microwave system is turned off and the ultrasonic system is turned on. The ultrasonic / microwave combined controller 7 is operated to adjust the ultrasonic power output by the ultrasonic probe, and the sludge is treated for a certain period of time using ultrasonic and mechanical stirring methods, and the steam generated during the treatment process is collected.

[0059] Under the action of ultrasonic + mechanical stirring, the sludge is dispersed and stirred through ultrasonic cavitation and mechanical action, accelerating the analysis of adsorbed oil in the sludge and the removal of oil.

[0060] Steps 1 and 2 above represent the oil sludge degreasing stage. The vapor mixture generated during this degreasing stage is discharged through the top outlet pipe 18 of the degreasing drying chamber 1, filtered by the filter 16 to intercept the oil vapor, and then condensed into a liquid by the condenser 17 and collected in the oil recovery device 25.

[0061] Step 3: Let it stand and stratify

[0062] After the oil removal phase is complete, the ultrasonic and stirring systems are turned off. The container is allowed to stand for a sufficient amount of time for the internal materials to separate into a clear liquid layer and a sediment layer. The valve of the liquid discharge pipe 22 is then opened to allow the clear liquid layer in the container to drain. The filter screen 20 can filter out solid impurities. After the clear liquid layer has drained out, the valve of the liquid discharge pipe 22 is closed.

[0063] Step 4: Microwave + Ultrasonic + Mechanical Stirring

[0064] Turn on the microwave system, ultrasonic system and stirring system, and use the combined action of microwave, ultrasonic and mechanical stirring to treat the sediment obtained in Step 3, and collect the steam generated during the treatment process.

[0065] Step 4 is the initial stage of drying. Since the water content is relatively high, turn on the ultrasonic and microwave. The ultrasonic cavitation effect can help the combined water and adsorbed water to be removed and become free water, and the ultrasonic mechanical action can produce a "sponge squeezing water effect", which helps the migration and removal of free water.

[0066] Step 5: Waste Heat Drying and Microwave + Mechanical Stirring (or Microwave + Mechanical Stirring)

[0067] In this step, if there are other waste heat generating equipment in the oily sludge treatment plant that are also working, the waste heat can be recycled for drying. This step is divided into the following two cases:

[0068] Case of waste heat utilization: After using the waste heat to dry the sediment, then use the microwave and mechanical stirring methods for treatment to obtain the waste residue, and collect the steam generated during the treatment process.

[0069] Case of no waste heat utilization: Directly use the microwave and mechanical stirring methods for treatment to obtain the waste residue, and collect the steam generated during the treatment process.

[0070] Step 5 is the later stage of drying. In the later stage of drying, the water content decreases and the ultrasonic effect weakens. It is necessary to turn off the ultrasonic and only turn on the microwave + stirring. The water is evaporated and removed by microwave heating. When there is waste heat utilization, first carry out waste heat utilization, which can reduce the microwave energy consumption.

[0071] The waste heat utilization is realized through the waste heat utilization system of the above-mentioned oily sludge deoiling and drying equipment. Refer to Figure 1 、 Figures 4 to 6 The waste heat gas enters the left ventilation space 14c through the waste heat gas inlet 6, then enters the inner shaft 14b of the shaft sleeve through the air hole 14f, and then the hot gas flows upward into the inner side space of the stirring shaft 12 and reaches the other side space after reaching the top. The waste heat gas in the stirring shaft 12 can conduct heat to the sediment, and the large contact area of the stirring paddle can play the role of fin enhanced heat transfer. After heat exchange, it is discharged from the waste heat gas outlet 24. If it is harmful gas, the waste heat gas outlet 2 can be connected to the tail gas purification equipment, and then discharged after meeting the emission standards after purification.

[0072] Steps 4 and 5 are the drying stage. The steam mixture generated during this drying stage is discharged through the top outlet pipe 18 of the oil removal and drying box 1, filtered by the filter device 16 to intercept the oil and gas, and then condensed into liquid by the condenser 17 and collected in the oil recovery device 25.

[0073] Step 6, a continuous step, combines the vapor and supernatant collected from all the previous steps and performs oil-water separation to produce recovered oil and wastewater. Specifically, the oil-water mixture in the oil recovery unit 5 is allowed to stand for stratification, and the upper oil layer is collected and recycled using conventional methods.

[0074] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An oily sludge degreasing and drying device, characterized in that, Including: An oil removal and drying box body, a microwave system, an ultrasonic system, a stirring system, and an oil-water recovery system; Wherein, the oil removal and drying box body is provided with a feeding port, a discharging port, an exhaust port, and a water outlet; The microwave system includes a microwave output device arranged at the top of the oil removal and drying box body and a microwave controller electrically connected to the microwave output device; The ultrasonic system includes a plurality of ultrasonic generating probes arranged on both side surfaces and the bottom surface of the oil removal and drying box body and an ultrasonic controller electrically connected to the ultrasonic generating probes; The oil-water recovery system includes a steam recovery branch and a wastewater recovery branch; The steam recovery branch is: the exhaust port is connected to a filtering device through an air outlet pipe, the filtering device is connected to a condenser, and the outlet of the condenser is connected to an oil product recovery device through a liquid outflow pipe; The wastewater recovery branch is: the water outlet is connected to the oil product recovery device through a liquid discharge pipe; The stirring system includes a stirring shaft, stirring paddles, and a motor. The upper end of the stirring shaft is located in the oil removal and drying box body. The stirring paddles are fixed on the stirring shaft. The motor is arranged at the outer bottom of the oil removal and drying box body, and the motor is used to drive the stirring shaft to rotate; The inside of the stirring shaft is a hollow structure, and a stirring shaft partition is arranged in the hollow structure. There is a gap between the stirring shaft partition and the top surface of the stirring shaft; The stirring shaft is also connected to a bushing assembly. The bushing assembly includes an inner bushing and a bushing housing that are independent of each other. The inner bushing is located inside the bushing housing; The inner bushing is connected to the lower end of the stirring shaft through a coupling. A plurality of air holes are formed on the circumferential wall of the inner bushing, and an inner bushing partition is arranged in the inner bushing; The inner wall of the bushing housing is provided with a bushing housing partition. The left and right side walls of the bushing housing are respectively connected to a waste heat gas inlet and a waste heat gas outlet. The waste heat gas inlet is used to connect to an existing device in the factory that generates waste heat gas, and the waste heat gas outlet is used for discharging the waste heat gas after heat exchange.

2. The oil sludge oil removal and drying equipment according to claim 1, characterized in that: Among them, A filter screen is arranged at the water outlet.

3. The oil sludge oil removal and drying equipment according to claim 1, characterized in that: Among them, A sound insulation cotton layer is embedded in the box body wall of the oil removal and drying box body.

4. The oil sludge oil removal and drying equipment according to claim 1, characterized in that: Among them, A liquid viewing window is arranged in the middle of the box body wall of the oil removal and drying box body.

5. The oil sludge oil removal and drying equipment according to claim 1, characterized in that: Among them, The filling material in the filtering device is a hydrophilic and oleophobic material.

6. The oil sludge oil removal and drying equipment according to claim 1, characterized in that: Among them, The oil removal and drying box body is further provided with a water replenishing port.

7. The oil sludge oil removal and drying equipment according to claim 1, characterized in that: Among them, The ultrasonic controller and the microwave controller are an integrated ultrasonic / microwave combined controller.

8. An oil sludge degreasing and drying method, characterized in that, This oil sludge oil removal and drying method is realized by the oil sludge oil removal and drying equipment according to any one of claims 1 to 7, and includes the following steps: Step 1: Treat the sludge using microwaves and mechanical stirring, and collect the steam generated during the treatment process; Step 2: Using ultrasonic and mechanical stirring to treat the sludge and collecting the steam generated during the treatment process; Step 3, allowing the sludge treated in step 2 to stand, separating the supernatant from the sediment, and collecting the supernatant; Step 4: treating the sediment obtained in step 3 by a combination of microwaves, ultrasound, and mechanical stirring, and collecting steam generated during the treatment process; Step 5: After the sediment is dried using the residual heat, it is treated using microwaves and mechanical stirring to obtain waste residue, and the steam generated during the treatment process is collected; or the sediment is directly treated using microwaves and mechanical stirring without the residual heat drying process to obtain waste residue, and the steam generated during the treatment process is collected; Step 6: The steam and supernatant collected in all steps are collected and then subjected to oil-water separation treatment to obtain recovered oil and wastewater.

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