Oil sludge and sludge drying wastewater treatment system

Abstract

The utility model provides an oil sludge and sludge drying wastewater treatment system, and relates to the technical field of oil sludge treatment. The oil sludge and sludge drying wastewater treatment system comprises: a pretreatment device for receiving, crushing and screening oil-containing sludge to form pretreated oil sludge; the sludge drying device is used for receiving sludge and dried sludge, dried wastewater and dried sludge are generated after the sludge is dried, the dried wastewater is sent to the pulping device, and the dried sludge is sent into the boiler for combustion; and the slurrying device is connected with the pretreatment device and the sludge drying device, and is used for mixing the pretreated oil sludge and the dried wastewater to form oil slurry and spraying the oil slurry into a boiler for combustion. According to the oil sludge and sludge drying wastewater treatment system, the problems that in the prior art, the risk of detonation caused by direct blending combustion of high-oil-content sludge is high, and the treatment cost of drying wastewater generated by sludge drying is high are solved, production safety is guaranteed, and meanwhile economic benefits are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil sludge treatment, in particular to an oil sludge and sludge drying wastewater treatment system. Background Art

[0002] Oily sludge mainly includes three categories: oilfield sludge, refinery sludge and oil-based rock cuttings. According to statistics, about 4 million tons of oily sludge is added to oilfields each year, of which about 25.2% is ground sludge, and about 74.8% is tank bottom sludge and scum sludge; the amount of refinery sludge produced can be calculated as 0.5% of the refining processing volume, and about 1.82 million tons of oily sludge is added each year. The output of oily sludge in my country's petroleum industry has shown an upward trend in the past decade. At present, in the field of oily sludge disposal, the mainstream disposal processes are thermal washing process, pyrolysis process, thermal desorption treatment process and incineration process. The thermal washing process has the defect of producing difficult-to-dispose oily wastewater, while the pyrolysis, thermal desorption and incineration processes all involve high temperatures, and the water content of the treated oily sludge decreases, so the oily sludge has the possibility of deflagration during transportation, which poses a safety hazard.

[0003] Sludge disposal is mainly carried out by incineration, among which coal-fired power plants have great advantages in using their own boilers to dispose of sludge in a coordinated manner. However, the sludge leaving the factory has disadvantages such as high water content, low calorific value, and large volume, which leads to a low proportion of sludge directly incinerated and severely limited processing capacity. In addition, sludge with high water content will also increase the energy consumption of power plants and have a great impact on boiler production and operation. Sludge is usually dried before being incinerated, but the dried wastewater produced by sludge drying has complex components and is rich in organic matter, ammonia nitrogen, suspended solids and other pollutants. The technical difficulty and cost of disposal are very high, which is one of the reasons that limit the application of sludge drying technology in the coordinated sludge disposal project of coal-fired power plants.

[0004] Therefore, a device is urgently needed to solve at least one of the above problems. Utility Model Content

[0005] The purpose of the embodiment of the utility model is to provide an oily sludge and sludge drying wastewater treatment system to solve the problems in the prior art of high risk of explosion caused by direct mixing and burning of high-oil sludge and high cost of treating dried wastewater generated by dried sludge.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an oily sludge and sludge drying wastewater treatment system, which is connected to the boiler, and the oily sludge and sludge drying wastewater treatment system comprises:

[0007] A pretreatment device, used for receiving, crushing and screening the oily sludge to form pretreated oily sludge;

[0008] A sludge drying device is used to receive sludge and dry the sludge, generate dried wastewater and dried sludge after drying the sludge, send the dried wastewater to the pulping device, and send the dried sludge into the boiler for combustion;

[0009] The pulping device is connected to the pretreatment device and the sludge drying device, and is used to mix the pretreated oil sludge and the dried wastewater to form oil sludge slurry, and spray the oil sludge slurry into the boiler for combustion.

[0010] Specifically, the oil sludge and sludge drying wastewater treatment system further includes: a temperature detector, which is arranged at the oil sludge outlet of the pretreatment device and is used to detect the temperature of the pretreated oil sludge discharged from the pretreatment device.

[0011] Specifically, the oil sludge and sludge drying wastewater treatment system also includes: a moisture meter, which is arranged in the pretreatment device and is used to detect the moisture content of the pretreated oil sludge.

[0012] Specifically, the pretreatment device includes: an oil sludge bin, a crushing component and a screening component;

[0013] The oil sludge bin is used to receive oily sludge;

[0014] The crushing assembly is arranged at the oil sludge inlet of the oil sludge bin, and is used to crush the oily sludge entering from the oil sludge inlet of the oil sludge bin;

[0015] The screening component is arranged in the oil sludge bin, below the crushing component, and is used for screening the crushed oil-containing sludge to form pre-treated oil sludge.

[0016] Specifically, the crushing assembly includes a crushing drive and a plurality of crushing rollers;

[0017] A plurality of crushing rollers are arranged in parallel at the oil sludge inlet of the oil sludge bin, and a given spacing is provided between two adjacent crushing rollers. The rotation of the crushing rollers can drive the oily sludge entering the oil sludge bin to pass through between the two adjacent crushing rollers, and the oily sludge is crushed by being squeezed by the two adjacent crushing rollers;

[0018] The crushing driver is arranged on the oil sludge bin and is used for driving a plurality of crushing rollers to rotate.

[0019] Specifically, the screening component includes: a screening net, which is arranged in the oil sludge bin and below the multiple crushing rollers, and is used for screening the crushed oil-containing sludge to form pre-treated oil sludge.

[0020] Specifically, the pulping device comprises: a pulping tank, a mixer, a storage tank and a pressurized jet pump;

[0021] The pulping tank is connected to the pretreatment device and the sludge drying device, and is used to receive pretreated sludge and dried wastewater;

[0022] The mixer is arranged in the slurry making tank and is used to mix the pre-treated oil sludge and the dried wastewater to form oil sludge slurry;

[0023] The storage tank is connected with the discharge port of the slurry making tank and the feed port of the boiler, and is used for storing the oil sludge;

[0024] The pressurized jet pump is arranged at the discharge port of the storage tank, and is used to spray the oil sludge discharged from the discharge port of the storage tank into the boiler for combustion.

[0025] Specifically, the mixer comprises: a stirring rod, a stirring driver and a plurality of stirring support rods;

[0026] The stirring rod has a stirring end and a driving end, the stirring end vertically extends into the pulping tank, the driving end is connected to the stirring driver, and a plurality of stirring support rods are arranged at the stirring end of the stirring rod, and the stirring rod can be rotated to drive the plurality of stirring support rods to rotate so as to stir the oily sludge and the dried wastewater by rotating the stirring rod;

[0027] The stirring driver is arranged on the top of the pulping tank and is used for driving the stirring rod to rotate.

[0028] Specifically, the oil sludge and sludge drying wastewater treatment system also includes: an additive supply device connected to the pulping device, which is used to transport additives to the pulping device to adjust the fluidity of the oil sludge slurry.

[0029] Specifically, the oil sludge and sludge drying wastewater treatment system also includes: a water supply device, connected to the pretreatment device, for supplying water to the pretreatment device to adjust the viscosity of the pretreated oil sludge.

[0030] The flue gas treatment device is connected to the boiler and is used for purifying the flue gas generated by the combustion of the boiler.

[0031] The utility model provides an oil sludge and sludge drying wastewater treatment system, which crushes and screens the oily sludge to form pre-treated oil sludge through a pre-treatment device, produces dried wastewater and dried sludge after the sludge is dried by the sludge drying device, and a pulping device receives the dried wastewater and the pre-treated oil sludge and mixes the dried wastewater and the pre-treated oil sludge to form oil sludge slurry, which is sprayed into a boiler for combustion. The fluid oil sludge has a high water content and is convenient to transport, thus avoiding combustion and explosion during the transportation process, and the dried sludge formed after the drying treatment The sludge is then sent into the boiler together with the coal for combustion. The oil sludge and sludge drying wastewater treatment system provided by the present invention utilizes the oil sludge mixed with the dried wastewater generated during the sludge drying process to make oil sludge slurry as fuel and send it into the boiler for combustion, thereby reducing the disposal pressure and cost of the oily sludge and the dried wastewater, achieving the harmless treatment of the oily sludge and the dried wastewater, solving the problems of high risk of explosion when directly mixing and burning high-oil sludge in the prior art and high cost of treating the dried wastewater generated by the dried sludge, thereby ensuring production safety.

[0032] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the embodiments of the present utility model and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present utility model, but do not constitute a limitation on the embodiments of the present utility model. In the accompanying drawings:

[0034] Figure 1 It is a schematic diagram of the layout of the oil sludge and sludge drying wastewater treatment system provided by the embodiment of the utility model;

[0035] Figure 2 It is a structural schematic diagram of a pre-treatment device in an oil sludge and sludge drying wastewater treatment system provided by an embodiment of the utility model;

[0036] Figure 3 It is a structural schematic diagram of a pulping device in an oil sludge and sludge drying wastewater treatment system provided by an embodiment of the utility model.

[0037] Description of Reference Numerals

[0038] 1-pretreatment device; 2-sludge drying device; 3-pulping device; 5-boiler; 11-oil sludge bin; 12-crushing assembly; 13-screening assembly; 120-crushing roller; 130-screening net; 31-pulping tank; 32-mixer; 33-storage tank; 34-pressurized jet pump; 321-agitation rod; 322-agitation drive; 323-agitation support rod; 324-agitation teeth. DETAILED DESCRIPTION

[0039] The specific implementation of the embodiment of the utility model is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model.

[0040] Figure 1 It is a schematic diagram of the layout of the oily sludge and sludge drying wastewater treatment system; Figure 2 It is a schematic diagram of the structure of the pretreatment device in the oil sludge and sludge drying wastewater treatment system; Figure 3 It is a structural schematic diagram of a pulping device in an oily sludge and sludge drying wastewater treatment system.

[0041] like Figure 1-Figure 3 As shown, the utility model provides an oil sludge and sludge drying wastewater treatment system, which is connected to the boiler 5, and the oil sludge and sludge drying wastewater treatment system includes:

[0042] A pretreatment device 1, for receiving, crushing and screening the oily sludge to form pretreated oily sludge;

[0043] The sludge drying device 2 is used to receive the sludge and dry the sludge. After the sludge is dried, dried wastewater and dried sludge are generated. The dried wastewater is sent to the pulping device 3, and the dried sludge is sent to the boiler for combustion;

[0044] The pulping device 3 is connected to the pretreatment device 1 and the sludge drying device 2, and is used to mix the pretreated oil sludge and the dried wastewater to form oil sludge slurry, and spray the oil sludge slurry into the boiler 5 for combustion.

[0045] The utility model provides an oily sludge and sludge drying wastewater treatment system, wherein the oily sludge is sent to a pretreatment device 1 to crush and screen the oily sludge to form pretreated oily sludge. The sludge has a high water content, and when mixed with coal for combustion, the high water content will affect the combustion effect. Therefore, the sludge is sent to a drying device 2 for drying to form dried wastewater and dried sludge, and the dried wastewater and the pretreated oily sludge are sent to a pulping device 3 for mixing to form oily sludge slurry. The oily sludge slurry is in a fluid state and has a high water content, which is convenient for transportation and avoids the occurrence of combustion and explosion. The oil sludge slurry made from the pre-treated oil sludge and the dried wastewater is burned to complete the treatment of the oily sludge and the dried wastewater, reducing the disposal pressure and cost of the oily sludge and the dried wastewater. The dried sludge is sent to a grinding device to be ground into dried mud powder, which is then mixed with coal and then sent to the boiler 5 together with the coal powder for combustion, thereby achieving the harmless treatment of the oily sludge, the dried wastewater and the dried sludge, and solving the problems of high risk of explosion when directly mixing and burning high-oil sludge and high cost of treating the dried wastewater generated by the dried sludge in the prior art.

[0046] In order to facilitate the staff to judge the explosion risk of the pre-treated sludge, the sludge and sludge drying wastewater treatment system also includes: a temperature detector, which is arranged at the sludge outlet of the pre-treatment device 1, and is used to detect the temperature of the pre-treated sludge discharged from the pre-treatment device 1. The staff avoids the explosion of the pre-treated sludge according to the detected temperature of the pre-treated sludge discharged from the sludge outlet of the pre-treatment device.

[0047] In order to facilitate the transportation of pre-treated sludge, the sludge and sludge drying wastewater treatment system also includes: a moisture meter, which is arranged in the pre-treatment device 1, and is used to detect the moisture content of the pre-treated sludge. By real-time monitoring of the moisture content of the pre-treated sludge, the flow condition of the pre-treated sludge is judged to avoid the pre-treated sludge from blocking the transportation pipeline. At the same time, the probability of explosion of the pre-treated sludge can be predicted according to the moisture content of the pre-treated sludge, so that the staff can avoid danger in advance.

[0048] In one embodiment, Figure 2 As shown, the pre-treatment device 1 comprises: an oil sludge bin 11, a crushing component 12 and a screening component 13;

[0049] The oil sludge bin 11 is used to receive oily sludge;

[0050] The crushing assembly 12 is disposed at the oil sludge inlet of the oil sludge bin 11, and is used to crush the oily sludge entering from the oil sludge inlet of the oil sludge bin 11;

[0051] The screening component 13 is disposed in the oil sludge bin 11 and below the crushing component 12 , and is used for screening the crushed oily sludge to form pre-treated oil sludge.

[0052] The crushing assembly 12 includes a crushing drive and a plurality of crushing rollers 120;

[0053] A plurality of crushing rollers 120 are arranged in parallel at the oil sludge inlet of the oil sludge bin 11, and a given spacing is provided between two adjacent crushing rollers 120. The rotation of the crushing rollers 120 can drive the oily sludge entering the oil sludge bin 11 to pass through between the two adjacent crushing rollers 120, and the oily sludge is crushed by being squeezed by the two adjacent crushing rollers 120;

[0054] The crushing driver is disposed on the oil sludge bin 11 and is used to drive a plurality of crushing rollers 120 to rotate.

[0055] The screening component 13 includes: a screening net 130, which is arranged in the oil sludge bin 11 and below the plurality of crushing rollers 120, and is used for screening the crushed oil-containing sludge to form pre-treated oil sludge.

[0056] The oily sludge enters the oil sludge bin 11 through the oil sludge inlet at the top of the oil sludge bin 11 and falls onto the crushing roller 120. Figure 2 As shown, a plurality of crushing rollers 120 are arranged in the oil sludge bin 11 below the oil sludge inlet, and the plurality of crushing rollers 120 are in the same horizontal plane. The crushing driver drives the crushing rollers 120 to rotate, and the rotation of the crushing rollers 120 drives the oily sludge that falls on the crushing rollers 120 to move and pass between two adjacent crushing rollers 120. When passing between two adjacent crushing rollers 120, the oily sludge is squeezed by the two crushing rollers 120, thereby completing the crushing of the oily sludge. By adjusting the given spacing between the two adjacent crushing rollers 120, the particle size of the pre-treated oily sludge formed after crushing can be changed. After being squeezed and crushed by the crushing rollers 120, the oily sludge falls onto the screening net 130, and the screening net 130 is provided with a plurality of sieve holes. The oily sludge with a suitable particle size passes through the sieve. The sieve holes on the screening net 130 become pre-treated sludge, while large impurities that do not pass through the sieve holes are retained on the screening net 130. A slag outlet is opened on the side wall of the sludge bin 11, and the large impurities retained on the screening net 130 are discharged through the slag outlet. In order to facilitate the discharge of large impurities, the screening net 130 is tilted in the sludge bin 11, and the horizontal height of the side of the screening net 130 away from the slag outlet is higher than the height of the side of the screening net 130 located at the slag outlet, so that the screening net 130 is tilted in the sludge bin 120. In order to speed up the passage of oily sludge of suitable particle size through the screening net 130, a vibration driver is set on the sludge bin 11, and the screening net 130 is vibrated by the vibration driver to speed up the crushed oily sludge that falls on the screening net 131 to pass through the sieve holes as soon as possible.

[0057] In one embodiment, in order to mix the pre-treated sludge and the dried wastewater, as Figure 3 As shown, the pulping device 3 includes: a pulping tank 31, a mixer 32, a storage tank 33 and a pressurized jet pump 34;

[0058] The pulping tank 31 is connected to the pretreatment device 1 and the sludge drying device 2, and is used to receive pretreated sludge and dried wastewater;

[0059] The mixer 32 is disposed in the slurry tank 31 and is used to mix the pre-treated oil sludge and the dried wastewater to form oil sludge slurry;

[0060] The storage tank 33 is connected to the discharge port of the slurry tank 31 and the feed port of the boiler 5, and is used to store the oil sludge;

[0061] The pressurized jet pump 34 is disposed at the discharge port of the storage tank 33 and is used to spray the oil slurry discharged from the discharge port of the storage tank 33 into the boiler 5 for combustion.

[0062] like Figure 3 As shown, the mixer 32 includes: a stirring rod 321, a stirring driver 322 and a plurality of stirring support rods 323;

[0063] The stirring rod 321 has a stirring end and a driving end, the stirring end vertically extends into the pulping tank 31, the driving end is exposed outside the pulping tank 31 and is connected to the stirring driver 322, a plurality of stirring support rods 323 are arranged at the stirring end of the stirring rod 321, and the stirring rod 321 can be rotated to drive the plurality of stirring support rods 323 to rotate so as to stir the oily sludge and the dried wastewater;

[0064] The stirring driver 322 is disposed on the top of the pulping tank 31 and is used to drive the stirring rod 321 to rotate.

[0065] Each stirring support rod 323 is provided with a plurality of stirring teeth 324 for stirring the oily sludge and the dried wastewater.

[0066] After the pretreated sludge and dried wastewater enter the pulping tank 31, in order to make the pretreated sludge and dried wastewater mixed evenly, the stirring driver 322 drives the stirring rod 321 to rotate, and the stirring rod 321 drives the stirring support rod 323 to continuously stir the pretreated sludge and dried wastewater, so that the pretreated sludge and dried wastewater can be mixed more evenly. In order to speed up the stirring efficiency, a plurality of stirring teeth 324 are arranged on each stirring support rod 323 to improve the stirring efficiency.

[0067] In order to enhance the fluidity of the oil sludge sprayed into the boiler 5, the oil sludge and sludge drying wastewater treatment system further comprises: an additive supply device connected to the pulping device 3, for conveying additives to the pulping device 3 to adjust the fluidity of the oil sludge. The additives added to the pulping device 3 can not only improve the fluidity of the oil sludge, but also make the state of the oil sludge uniform, thereby ensuring that the oil sludge sprayed into the boiler 5 can be stably burned.

[0068] The oil sludge is burned in the boiler 5 to generate flue gas. In order to prevent harmful impurities in the flue gas from polluting the environment, a flue gas treatment device is provided, which is connected to the boiler 5 and is used to purify the flue gas generated by the combustion of the boiler 5. Harmful impurities in the flue gas are removed by the flue gas treatment device, and the flue gas after the impurities are removed is discharged from the flue gas treatment device.

[0069] The utility model provides an oil sludge and sludge drying wastewater treatment system, which crushes and screens the oily sludge through a pretreatment device to form pretreated oil sludge, and the sludge is dried by the sludge drying device to form dried wastewater and dried sludge, and the pulping device receives the dried wastewater and the pretreated oil sludge and mixes the dried wastewater and the pretreated oil sludge to form oil sludge, and the oil sludge slurry is sprayed into the boiler for combustion. The fluid oil sludge slurry has a high water content and is convenient to transport, thereby avoiding combustion and explosion during the transportation process, and the dried sludge formed after the drying treatment The sludge is then sent into the boiler together with the coal for combustion. The oil sludge and sludge drying wastewater treatment system provided by the present invention utilizes the oil sludge mixed with the dried wastewater generated during the sludge drying process to make oil sludge slurry as fuel and send it into the boiler for combustion, thereby reducing the disposal pressure and cost of the oily sludge and the dried wastewater, achieving the harmless treatment of the oily sludge and the dried wastewater, solving the problems of high risk of explosion when directly mixing and burning high-oil sludge in the prior art and high cost of treating the dried wastewater generated by the dried sludge, thereby ensuring production safety.

[0070] The optional implementation modes of the embodiments of the utility model are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the utility model are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the utility model, the technical scheme of the embodiments of the utility model can be subjected to various simple modifications, and these simple modifications all belong to the protection scope of the embodiments of the utility model.

[0071] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the utility model will not further describe various possible combinations.

[0072] Those skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including a number of instructions to enable a single-chip microcomputer, a chip or a processor to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0073] In addition, various implementations of the embodiments of the present utility model can also be arbitrarily combined, as long as they do not violate the concept of the embodiments of the present utility model, they should also be regarded as the contents disclosed in the embodiments of the present utility model.

Claims

1. A system for treating wastewater from oily sludge and sludge drying, characterized in that: Connected to the boiler (5), the oil sludge and sludge drying wastewater treatment system comprises: A pretreatment device (1) is used to receive, crush and screen the oily sludge to form pretreated oily sludge; The sludge drying device (2) is used to receive the sludge and dry the sludge, and after drying the sludge, dry wastewater and dry sludge are generated, the dry wastewater is sent to the pulping device (3), and the dry sludge is sent to the boiler (5) for combustion; The pulping device (3) is connected to the pretreatment device (1) and the sludge drying device (2), and is used to mix the pretreated oil sludge and the dried wastewater to form oil sludge slurry, and spray the oil sludge slurry into the boiler (5) for combustion.

2. The oil sludge and sludge drying wastewater treatment system according to claim 1, characterized in that: The oil sludge and sludge drying wastewater treatment system also includes: a temperature detector, which is arranged at the oil sludge outlet of the pretreatment device (1) and is used to detect the temperature of the pretreated oil sludge discharged from the pretreatment device (1).

3. The oil sludge and sludge drying wastewater treatment system according to claim 1, characterized in that: The oil sludge and sludge drying wastewater treatment system also includes: a moisture meter, which is arranged in the pretreatment device (1) and is used to detect the moisture content of the pretreated oil sludge.

4. The oil sludge and sludge drying wastewater treatment system according to claim 1, characterized in that: The pretreatment device (1) comprises: an oil sludge bin (11), a crushing component (12) and a screening component (13); The oil sludge bin (11) is used to receive oily sludge; The crushing assembly (12) is arranged at the oil sludge inlet of the oil sludge bin (11) and is used to crush the oily sludge entering from the oil sludge inlet of the oil sludge bin (11); The screening component (13) is arranged in the oil sludge bin (11), below the crushing component (12), and is used for screening the crushed oil-containing sludge to form pre-treated oil sludge.

5. The oil sludge and sludge drying wastewater treatment system according to claim 4, characterized in that: The crushing assembly (12) includes a crushing drive and a plurality of crushing rollers (120); A plurality of crushing rollers (120) are arranged in parallel at the oil sludge inlet of the oil sludge bin (11), and a given spacing is provided between two adjacent crushing rollers (120). The rotation of the crushing rollers (120) can drive the oily sludge entering the oil sludge bin (11) to pass between the two adjacent crushing rollers (120), and the oily sludge is crushed by being squeezed by the two adjacent crushing rollers (120); The crushing driver is arranged on the oil sludge bin (11) and is used for driving a plurality of crushing rollers (120) to rotate.

6. The oil sludge and sludge drying wastewater treatment system according to claim 5, characterized in that: The screening component (13) comprises: a screening net (130) arranged in the oil sludge bin (11) and located below the plurality of crushing rollers (120), and used for screening the crushed oil-containing sludge to form pre-treated oil sludge.

7. The oil sludge and sludge drying wastewater treatment system according to claim 1, characterized in that: The pulping device (3) comprises: a pulping tank (31), a mixer (32), a storage tank (33) and a pressurized jet pump (34); The pulping tank (31) is connected to the pretreatment device (1) and the sludge drying device (2) and is used to receive pretreated sludge and dried wastewater; The mixer (32) is arranged in the slurry making tank (31) and is used to mix the pre-treated oil sludge and the dried wastewater to form oil sludge slurry; The storage tank (33) is connected to the discharge port of the slurry making tank (31) and the feed port of the boiler (5) and is used to store the oil sludge; The pressurized jet pump (34) is arranged at the discharge port of the storage tank (33) and is used to spray the oil slurry discharged from the discharge port of the storage tank (33) into the boiler (5) for combustion.

8. The oil sludge and sludge drying wastewater treatment system according to claim 7, characterized in that: The stirrer (32) comprises: a stirring rod (321), a stirring driver (322) and a plurality of stirring support rods (323); The stirring rod (321) has a stirring end and a driving end, the stirring end vertically extends into the pulping tank (31), the driving end is connected to the stirring driver (322), a plurality of stirring support rods (323) are arranged at the stirring end of the stirring rod (321), and the stirring rod (321) is rotated to drive the plurality of stirring support rods (323) to rotate so as to stir the oily sludge and the dried wastewater; The stirring driver (322) is arranged on the top of the pulping tank (31) and is used to drive the stirring rod (321) to rotate.

9. The oil sludge and sludge drying wastewater treatment system according to claim 1, characterized in that: The oil sludge and sludge drying wastewater treatment system also includes: an additive supply device connected to the pulping device (3) and used to transport additives to the pulping device (3) to adjust the fluidity of the oil sludge slurry.

10. The oil sludge and sludge drying wastewater treatment system according to claim 1, characterized in that: The oily sludge and sludge drying wastewater treatment system further comprises: a flue gas treatment device connected to the boiler (5) and used for purifying the flue gas generated by the combustion of the boiler (5).

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