CN213895561U

CN213895561U - Thermal cleaning treatment system for oily sludge

Info

Publication number: CN213895561U
Application number: CN202022931808.5U
Authority: CN
Inventors: 马勇鹏; 曾宪成; 刘剑飞; 陈慧中; 马泽林; 付传松; 李银峰; 孟德伟; 杜甲航; 司昌威
Original assignee: Henan Ruishida Separation Equipment Technology Co ltd
Current assignee: Henan Ruishida Separation Equipment Technology Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-08-06
Anticipated expiration: 2030-12-10

Abstract

The utility model discloses a hot cleaning processing system of oiliness mud belongs to oil field oiliness mud processing technology field. It washs jar, coarse screening machine, coarse screening jar, fine screening machine, fine screening jar, centrifuge jar and oil-water separation holding vessel including the breaker, the breakage that are linked together in proper order of keeping in jar, fluidization, the utility model discloses a one set of oily sludge's innoxious, minimizing and resourceful treatment's a complete set of system carries out classification to oily sludge and realizes resourceful recovery, compact structure, safe and reliable, and the treatment effect is good.

Description

Thermal cleaning treatment system for oily sludge

Technical Field

The utility model relates to an oil field oily sludge treatment technical field, concretely relates to oily sludge's hot cleaning processing system.

Background

The oily sludge is one of main pollutants generated in the aspects of well drilling, fracturing, pilot production, operation, crude oil treatment, oily sewage treatment, crude oil storage and transportation and the like in the oil field development process, and the oily sludge cannot be treated in time, so that different degrees of influence can be caused on a production area and the surrounding environment. Oil gas in the oily sludge volatilizes, so that the total hydrocarbon concentration of the air quality in a production area exceeds the standard, the scattered and stacked oily sludge pollutes surface water and even underground water, the oily sludge contains a large amount of crude oil, the petroleum in the soil exceeds the standard, the soil is hardened, vegetation in the area is damaged, grasslands are degraded, and the ecological environment is influenced.

Because the oily sludge contains toxic and harmful substances such as sulfide, benzene series, phenols, anthracene, pyrene and the like, and some hydrocarbon substances contained in the crude oil have carcinogenic, teratogenic and mutagenic effects, the oily sludge in the oil field is listed as dangerous solid waste (HW 08) by the nation and is included in dangerous substances for treatment.

The prior methods for treating the oily sludge mainly comprise an incineration method, a biological treatment method, a natural drying method, an organic solvent extraction method and the like. The incineration method can almost completely remove various harmful substances, reduces the harm to the environment, has good waste volume reduction effect but large energy consumption, generates secondary pollution in the incineration process, and can not recycle oil resources, thereby causing resource waste; the biological treatment method is to carry out biological degradation on the oily sludge for a long time, so that oil resources cannot be recycled, and the resources are wasted; the natural drying method depends on evaporation dehydration, occupies a large area and is easy to generate secondary pollution; the organic solvent extraction method is based on the similar compatibility principle, and adopts organic solvent to extract organic matters, so that most of petroleum in the petroleum sludge can be recovered, but most of organic extraction solvents are toxic, flammable and explosive, and have great potential safety hazard.

Disclosure of Invention

The utility model aims at overcoming the shortcoming of prior art, providing a thermal cleaning treatment resource recovery technique to oiliness mud, be one set of oily mud's innoxious, minimizing and resource processing's a complete set of system, can make the oil in the oiliness mud separate out from mud and realize recycle.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a thermal cleaning treatment system for oily sludge comprises a crusher, a temporary crushing storage tank, a fluidized cleaning tank, a coarse screening machine, a coarse screening tank, a fine screening machine, a fine screening tank, a centrifugal machine tank and an oil-water separation storage tank which are sequentially communicated;

purifying the sewage treated by the oil-water separation storage tank to a water storage tank by a dissolved air flotation machine, wherein the water storage tank is used for providing water sources for a medicine mixing tank and a fluidization cleaning tank, and the medicine mixing tank is communicated with the fluidization cleaning tank; conveying the oil separated from the oil-water separation storage tank to an oil tank for recycling;

the coarse screening machine is mainly used for screening large-particle impurities in the oily sludge, the liquid below the screen enters the coarse screening tank, the fine screening machine is mainly used for screening small-particle impurities in the liquid below the screen of the coarse screening machine, and the liquid below the screen enters the fine screening tank.

As an improvement of the utility model, the inside of water storage tank and broken jar of keeping in all is provided with steam heating coil.

As an improvement of the utility model, the sundries outlet of the coarse screening machine is communicated with the feed inlet of the water washing flotation machine.

As an improvement of the utility model, the oily sludge in the broken jar of keeping in is transported to the fluidization washing jar through grab bucket crane assembly.

As an improvement of the utility model, the grab bucket crane assembly is two roof beam frame crane, and it includes the portal frame and installs the grab bucket on the portal frame top beam, and broken jar of keeping in and fluidization washing jar all set up in the portal frame inboard and corresponding with the grab bucket position.

As an improvement of the utility model, the breaker is installed in the top of broken jar of keeping in, and the top at the coarse screening jar is installed to the coarse screening machine, and the top at the fine screening jar is installed to the fine screening machine.

As an improvement of the utility model, the fluidization cleaning tank comprises a main body frame, a tank body arranged on the main body frame and a variable frequency motor;

a double-helix stirring mechanism and indirect heating pipes regularly distributed on two sides of the tank body are arranged in the tank body along the longitudinal direction;

the variable frequency motor drives the double-helix stirring mechanism, and a dosing port, a hot water port, a steam indirect heating inlet and a steam indirect heating outlet are formed in the front baffle of the tank body.

As an improvement of the utility model, the tank body is of a U-shaped structure, and the outer side of the tank body close to the bottom position is provided with a water vapor direct heating pipe which is longitudinally distributed;

the steam direct heating pipe is uniformly provided with a plurality of nozzle connecting holes, one end of each nozzle is communicated with the steam direct heating pipe, and the other end of each nozzle is communicated with the inside of the tank body and points downwards to the tangential direction of the circular arc.

As an improvement of the utility model, the fine screening tank comprises a sledge seat, a rectangular tank body and an oil transfer pump are arranged on the sledge seat, an overflow bin, an oil-water separation bin and an oil storage bin are sequentially arranged in the tank body, and the oil transfer pump is communicated with an oil outlet of the oil storage bin;

the overflow bin and the oil-water separation bin are separated by an overflow weir plate, and a stirrer is arranged inside the overflow bin;

a sedimentation inclined plate and an isolation plate are arranged inside the oil-water separation bin, the top of the isolation plate is connected to the inner wall of the top of the oil-water separation bin, the bottom of the isolation plate extends downwards to a position close to the bottom of the oil-water separation bin, a liquid phase passing space is formed between the isolation plate and the inner wall of the bottom of the oil-water separation bin, and the bottom of the isolation plate is lower than the top of the sedimentation inclined plate;

the inside of oil storage bin is provided with steam heating coil, is provided with the oil skimming machine on the upper plane of oil storage bin, and the oil skimming machine retrieves the oil slick in the oil water separation storehouse through the oil skimming machine floater of subsiding the swash plate top.

As an improvement of the utility model, a buffer plate is arranged in the overflow bin, and a first liquid phase channel is formed between the buffer plate and the overflow weir plate;

liquid-phase materials in the overflow bin sequentially pass through the first liquid-phase channel and the space above the overflow weir plate to reach the oil-water separation bin;

the division board forms the second liquid phase passageway with the inner wall in oil-water separation storehouse jointly, is provided with the commentaries on classics stuff pump on the upper flat surface in oil-water separation storehouse, and the inlet and the second liquid phase of commentaries on classics stuff pump are said and are linked together.

The utility model has the advantages that: the utility model discloses a hot cleaning treatment system of oiliness mud, it washs jar, coarse screen extension jar, fine screening machine, fine screening jar, centrifuge jar and water oil separating holding vessel including breaker, the breakage that is linked together in proper order of keeping in, fluidization, the utility model discloses a one set of system of harmlessness, minimizing and resourceful treatment of one set of oiliness mud carries out stage treatment to oiliness mud and realizes resourceful recovery, compact structure, safe and reliable, and the treatment effect is good.

The inside of water storage tank and broken jar of keeping in all is provided with steam heating coil, mainly carries out preheating to its inside material, shortens the heating time that the sequent flow was handled, raises the efficiency.

The impurity outlet of the coarse screening machine is communicated with the feed inlet of the water washing flotation machine. Coarse particles and light impurities screened by the coarse screening machine can be screened and classified through the water washing flotation machine, and classified discharge and stacking are realized.

Oily sludge in the crushing temporary storage tank is transferred to the fluidization cleaning tank through the grab crane assembly, the grab crane assembly is a double-beam frame crane and comprises a portal frame and a grab bucket installed on a top cross beam of the portal frame, and the crushing temporary storage tank and the fluidization cleaning tank are both arranged on the inner side of the portal frame and correspond to the grab bucket. By adopting the double-beam frame crane, the crane is simple in structure, safe, reliable and compact in structure.

The fluidization cleaning tank comprises a main body frame, a tank body arranged on the main body frame and a variable frequency motor; a double-helix stirring mechanism and indirect heating pipes regularly distributed on two sides of the tank body are arranged in the tank body along the longitudinal direction; the variable frequency motor drives the double-helix stirring mechanism, and a dosing port, a hot water port, a steam indirect heating inlet and a steam indirect heating outlet are formed in the front baffle of the tank body. It passes through inverter motor and double helix rabbling mechanism's cooperation, can be according to the corresponding stirring speed of different kinds of oily sludge source adjustment, makes oily sludge and water and medicine intensive mixing, and then realizes the fluidization of oily sludge, realizes oil, water, mud separation simultaneously, and fatlute separation effect is showing and simple structure.

The tank body is of a U-shaped structure, and the outer side of the tank body close to the bottom is provided with a water vapor direct heating pipe which is longitudinally distributed; the steam direct heating pipe is uniformly provided with a plurality of nozzle connecting holes, one end of each nozzle is communicated with the steam direct heating pipe, and the other end of each nozzle is communicated with the inside of the tank body and points downwards to the tangential direction of the circular arc. The design of above-mentioned structure can make vapor to the direct heating of oiliness mud, has improved heating efficiency, and the tangent direction of the direct directional convex jar of body of nozzle simultaneously blows off the bottom precipitate through vapor direct row jar internal portion, prevents to deposit and concentrates.

The fine screening tank comprises a sledge seat, a rectangular tank body and an oil delivery pump are mounted on the sledge seat, an overflow bin, an oil-water separation bin and an oil storage bin are sequentially arranged in the tank body, and the oil delivery pump is communicated with an oil outlet of the oil storage bin; the overflow bin and the oil-water separation bin are separated by an overflow weir plate, and a stirrer is arranged inside the overflow bin; the oil-water separator is characterized in that a sedimentation inclined plate and a partition plate are arranged in the oil-water separation bin, a steam heating coil is arranged in the oil storage bin, and an oil skimming machine is arranged on the upper plane of the oil storage bin. Through the close fit of the three bins, the utility model integrates the functions of oil-water separation, oil storage, oil output, slurry storage, slurry transferring and the like, has compact structure, simple operation, obvious oil-water separation effect and high oil recovery efficiency, and is convenient to transport and use by adopting a skid-mounted structure; meanwhile, the workload of the oil-water separation tank is reduced, and the overall working efficiency of the oil sludge treatment system is improved.

Drawings

FIG. 1 is a schematic structural diagram of a thermal cleaning treatment system for oily sludge according to the present invention;

FIG. 2 is a process flow diagram of a thermal cleaning treatment system for oily sludge according to the present invention;

FIG. 3 is a schematic structural diagram of a fluidized cleaning tank in a thermal cleaning treatment system for oily sludge according to the present invention;

fig. 4 is a schematic structural diagram of a fine screening tank in a thermal cleaning treatment system for oily sludge according to the present invention.

In the figure, 1, a feeding device; 2. a grab bucket crane assembly; 3. a crusher; 4. a temporary crushing storage tank; 5. a fluidization cleaning tank; 51. a main body frame; 52. a tank body; 53. a double-helix stirring mechanism; 54. a variable frequency motor; 55. an indirect heating pipe; 56. the steam directly heats the pipe; 57. a medicine adding port; 58. a hot water port; 59. the steam directly heats the inlet; 5A, indirectly heating an outlet by using water vapor; 5B, indirectly heating the inlet by using water vapor; 6. a medicine mixing tank; 7. a coarse screening machine; 8. washing the flotation machine with water; 9. a coarse screening tank; 10. fine screening machine; 11. a fine screening tank; 110. an oil skimming machine; 111. an oil transfer pump; 112. a sledge base; 113. an oil storage bin; 114. a steam heating coil; 115. a separator plate; 116. a sedimentation sloping plate; 117. an overflow bin; 118. a stirrer; 119. a buffer plate; 11A, an overflow weir plate; 11B, an oil-water separation bin; 11C, a slurry rotating pump; 12. a centrifuge; 13. a centrifuge tank; 14. a dissolved air flotation machine; 15. an oil-water separation storage tank; 16. a water storage tank; 17. a steam boiler; 18. an oil tank.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

It should be noted that the terms of orientation such as up, down, left, right, etc. in the embodiments of the present invention are only relative concepts or reference to the normal use state of the product, and should not be considered as limiting.

As shown in fig. 1 and 2, a thermal cleaning treatment system for oily sludge comprises a crusher 3, a temporary crushing storage tank 4, a fluidized cleaning tank 5, a coarse screening machine 7, a coarse screening tank 9, a fine screening machine 10, a fine screening tank 11, a centrifuge 12, a centrifuge tank 13 and an oil-water separation storage tank 15 which are sequentially communicated; the sewage treated by the oil-water separation storage tank 15 is purified by a dissolved air flotation machine 14 and then flows to a water storage tank 16, the water storage tank 16 is used for providing water sources for a medicine mixing tank 6 and a fluidization cleaning tank 5, and the medicine mixing tank 6 is communicated with the fluidization cleaning tank 5; the oil separated from the oil-water separation storage tank 15 is conveyed to an oil tank 18 for recycling; coarse screening machine 7 mainly sieves the large granule impurity in the oily sludge after fluidization washing tank 5 handles, sieve for the first order, the liquid under the sieve gets into coarse screening jar 9, coarse screening jar 9 mainly used coarse screening machine 7 undersize the storage and the transportation of liquid phase, prevent that liquid phase tiny particle from sinking the end through equipment such as the pump on the jar and agitator, supply with liquid phase fine screening machine 10 through the pump simultaneously, fine screening machine 10 mainly sieves the tiny particle impurity in the liquid that removes through the coarse screening machine undersize and sieves, sieve for the second order, the liquid under the sieve gets into fine screening jar 11. The fine screening tank 11 is mainly used for storing and transferring liquid phase under the screen of the fine screening machine 10 and collecting and transferring floating oil for recovery, the recovered oil enters an oil storage bin, the recovered oil is periodically conveyed to the oil-water separation storage tank 15 for transfer and recovery, and the liquid phase after the floating oil is collected is supplied to the centrifugal machine 12 through a pump for separation. The centrifuge mainly carries out solid-liquid separation treatment on the liquid phase supplied by the pump of the fine screening tank 11, namely, third-stage screening, and the treated liquid phase enters the centrifuge tank 13. The centrifuge tank 13 is mainly used for storing and transferring the liquid phase processed by the centrifuge 12, and the liquid phase processed by the centrifuge 12 is supplied to the oil-water separation storage tank 15. The oil-water separation storage tank 15 is mainly used for oil-water separation of the liquid phase of the centrifuge 12, the separated oil is pumped to the oil tank 18 for recycling, and the treated water enters the dissolved air floatation machine 14 for purification treatment. The dissolved air flotation machine 14 is mainly used for descumming treatment of sewage after being treated by an oil-water separation storage tank 15, and is water purification treatment equipment which is a conventional known device, and is used for generating a large amount of micro bubbles in water through a dissolved air and release system, enabling the micro bubbles to be adhered to solid or liquid particles with density close to that of water in the wastewater to cause the state that the whole density is less than that of the water, enabling the micro bubbles to rise to the water surface by virtue of buoyancy, scraping floating objects such as upper-layer scum and the like by a scraping plate of the air flotation machine, and directly conveying the water treated by the dissolved air flotation machine 14 to a water storage tank 16 for recycling. The water storage tank 16 is used for storing, transferring and heating circulating water, external water and water recycled after system treatment (such as water treated by the dissolved air floatation machine 14 in the embodiment) all enter the water storage tank 16, a steam heating coil is designed inside the water storage tank 16 to heat the stored water, and the heated water is supplied to the medicine mixing tank 6 through a pump for medicine mixing or supplied to the fluidization cleaning tank 5 for fluidization separation. The temporary crushing storage tank 4 is mainly used for storing the oily sludge crushed by the crusher 3, a steam heating coil is designed in the temporary crushing storage tank, and the temporary crushing storage tank is mainly used for storing the oily sludge and simultaneously carrying out preheating treatment, so that the heating time of fluidization separation treatment is shortened, and the working efficiency is improved. The steam boiler 17 provides a heat source for the entire system, i.e. the steam heating coils arranged inside the water storage tank 16 and the crash buffer tank 4 as well as the heat source required in the fluidized cleaning tank 5 are provided by the steam boiler 17.

The impurity outlet of the coarse screening machine 7 is communicated with the feed inlet of the water-washing flotation machine 8. The water washing flotation machine mainly screens and classifies large-particle impurities which are screened by a coarse screening machine and mainly consist of coarse particles and light impurities, and classified discharge and stacking are realized.

Oily sludge in the temporary crushing storage tank 4 is transferred to the fluidized cleaning tank 5 through the grab crane assembly 2. The grab crane assembly 2 is a double-beam frame crane, and comprises a portal frame and a grab bucket arranged on a beam at the top of the portal frame, and the crushing temporary storage tank 4 and the fluidized cleaning tank 5 are both arranged on the inner side of the portal frame and correspond to the grab bucket.

Crusher 3 installs in the top of broken jar 4 of keeping in, and coarse screening machine 7 is installed in the top of coarse screening jar 9, and fine screening machine 10 is installed in the top of fine screening jar 11, and the bottom height that jar 5 was washd in the fluidization is higher than coarse screening machine 7 top height, and through the distribution design of above-mentioned mode, the usable difference in height of liquid phase of each part processing flows in corresponding epilogue flow, can save the quantity of delivery pump, practices thrift the cost, and compact structure.

The utility model discloses a work flow as follows:

(1) use and dig out oiliness mud from the sludge impoundment like loading attachment 1 such as excavator, send to breaker 3 and carry out the breakage, fall into broken jar 4 of keeping in again, be equipped with steam heating coil in the broken jar 4 of keeping in, preheat jar interior fatlute.

(2) The oil-containing sludge in the crushing temporary storage tank 4 is conveyed to the fluidization cleaning tank 5 by utilizing the grab bucket crane assembly 2, the fluidization cleaning tank 5 can adopt the existing thermal cleaning machine, the oil and the sludge in the oil-containing sludge are separated out, meanwhile, the oil sludge is fluidized, the fluidity is enhanced, the transportation is convenient, the oil sludge slurry treated by the fluidization cleaning tank 5 flows into the coarse screening machine 7 through the height difference, and the coarse screening is carried out, namely, the first-stage screening.

Coarse particle solids and light impurities on a screen of the coarse screening machine 7 enter a water washing flotation machine 8 for grading screening and stacking, and liquid phase below the screen of the coarse screening machine 7 directly falls into a coarse screening tank 9.

(3) And pumping the liquid phase in the coarse screening tank 9 to a fine screening machine 10 for screening, namely secondary screening.

Solid phases on the screen of the fine screening machine 10 are discharged and stacked, and liquid phases under the screen of the fine screening machine 10 fall into the fine screening tank 11.

(4) The fine screening tank 11 collects the floating oil in the liquid phase into an oil storage bin, the floating oil is periodically conveyed to an oil-water separation storage tank 15 for transportation and recovery, and the liquid phase after the floating oil is collected is supplied to a centrifugal machine 12 through a pump for solid-liquid separation, namely, the third-stage separation. The solid phase treated by the centrifuge 12 is discharged and stacked, the liquid phase treated by the centrifuge 12 is pumped into a centrifuge tank 13, and the liquid phase in the centrifuge tank 13 is supplied to an oil-water separation storage tank 15 through a pump for oil-water separation.

(5) The sewage treated by the oil-water separation storage tank 15 is purified by the dissolved air flotation machine 14 and then is recycled in the water storage tank 16, and the oil separated by the oil-water separation storage tank 15 is conveyed to the oil tank 18 for recycling.

As shown in fig. 3, preferably, the fluidized cleaning tank 5 comprises a main body frame 51, a tank 52 and a variable frequency motor 54 are installed in the main body frame 51, wherein a top cover for preventing the materials in the tank from splashing outside the tank is installed on the top of the tank 52; a double-helix stirring mechanism 53 and indirect heating pipes 55 regularly distributed on two sides of the tank body 52 are arranged in the tank body 52 along the longitudinal direction; inverter motor 54 drives double helix rabbling mechanism 53, and the drive mode can adopt inverter motor 54 to pass through the belt and drive the speed reducer, and the power take off end of speed reducer passes through the shaft coupling and then controls double helix rabbling mechanism 53's (mixing) shaft and rotate to realize inverter motor 54 control double helix rabbling mechanism 53's stirring speed, adopt inverter motor 54 can stir the separation according to the different stirring speed of the oily sludge adjustment of not using the operating mode, improve separation efficiency. The front baffle of the tank 52 is provided with a dosing port 57, a hot water port 58, a steam indirect heating inlet 5B and a steam indirect heating outlet 5A, wherein the number of the dosing ports 57 can be set according to actual needs, and is two in this embodiment.

Preferably, the lower portion of the tank 52 has a circular arc structure, and the upper portion of the tank 52 can have a straight line structure, for example, the present invention is not limited to the upper structure of the tank 52, and the tank 52 can have a U-shaped structure, for example. The outer side of the tank body 52 is provided with the steam direct heating pipes 56 which are longitudinally distributed, and a steam direct heating inlet 59 serving as an inlet of the steam direct heating pipe 56 can be arranged on the front baffle plate and can also be arranged at a position close to the front baffle plate, so that the specific installation position of the steam direct heating inlet 59 is not limited; a plurality of nozzle connecting holes have been seted up on the vapor direct heating pipe 56 evenly, and nozzle one end is linked together with vapor direct heating pipe 56, and the other end is linked together and the tangential direction of the directional circular arc of downwards with jar body 52 is inside, and in this embodiment, the nozzle is a intercommunication nozzle stub, the utility model discloses do not do the restriction to the concrete structure of nozzle. The design of above-mentioned structure can make vapor to the direct heating of oiliness mud, has improved heating efficiency, and the tangent line direction of the direct directional arc jar body 52 of nozzle simultaneously directly blows off the bottom precipitate through vapor direct row jar internal portion 52, prevents to deposit concentratedly.

As shown in fig. 4, preferably, the fine screening tank 11 includes a skid base 112, a rectangular tank body and an oil transfer pump 111 are mounted on the skid base 112, the oil transfer pump 111 is mounted on the left side of the tank body, an overflow bin 117, an oil-water separation bin 11B and an oil storage bin 113 are sequentially disposed inside the tank body from right to left, the oil transfer pump 111 is communicated with an oil outlet of the oil storage bin 113, and an oil drain valve is disposed on a pipeline between the oil transfer pump 111 and the oil storage bin 113. The overflow bin 117 and the oil-water separation bin 11B are separated by an overflow weir plate 11A, and a stirrer 118 and a buffer plate 119 are provided inside the overflow bin 117. The top of the buffer plate 119 is welded to the top wall of the overflow bin 117, the bottom of the buffer plate 119 extends downwards to the lower part of the overflow bin 117, a liquid phase passing space is formed between the buffer plate 119 and the inner wall of the bottom of the overflow bin 117, and two sides of the buffer plate 119 are respectively welded to the inner wall of the overflow bin 117; the bottom of the overflow weir plate 11A is welded and connected to the bottom wall of the overflow bin 117, the top of the overflow weir plate 11A extends upwards to the upper part of the overflow bin 117, a liquid phase passing space is formed between the top of the overflow weir plate 11A and the inner wall of the top of the overflow bin 117, and two sides of the overflow weir plate 11A are respectively welded and connected to the inner wall of the overflow bin 117; a first liquid phase channel is formed between the buffer plate 119 and the overflow weir plate 11A; the liquid phase material in the overflow bin 117 sequentially passes through the lower space of the buffer plate 119, the first liquid phase channel and the upper space of the overflow weir plate 11A to the oil-water separation bin 11B. The inside of the oil-water separation bin 11B is provided with a sedimentation inclined plate 116 and a partition plate 115, the partition plate 115 is arranged on the left side of the sedimentation inclined plate 116, the top of the partition plate 115 is welded on the inner wall of the top of the oil-water separation bin 11B, the bottom of the partition plate extends downwards to the bottom of the oil-water separation bin 11B, and a liquid phase passing space is formed between the partition plate and the inner wall of the bottom of the oil-water separation bin 11B, two sides of the partition plate 115 are respectively welded on the inner wall of the oil-water separation bin 11B, and the bottom of the partition plate 115 is lower than the top of the sedimentation inclined plate 116; the partition plate 115 and the inner wall of the oil-water separation chamber 11B on the left side of the partition plate 115 together form a second liquid phase channel, a slurry rotating pump 11C is arranged on the upper plane of the oil-water separation chamber 11B, a liquid inlet of the slurry rotating pump 11C is communicated with the second liquid phase channel, and the liquid phase from which the floating oil is removed is sequentially communicated to the next flow (such as the centrifuge 12 in the embodiment) through the space and the second liquid phase channel below the partition plate 115 under the action of the slurry rotating pump 11C. The steam heating coil 114 is arranged inside the oil storage bin 113, the steam heating coil 114 is installed on the inner wall of the oil storage bin 113, preferably, the steam heating coil 114 is installed on the inner walls of three sides of the oil storage bin 113, a ladder for maintaining or installing the steam heating coil 114 is installed on the other side of the oil storage bin, the steam heating coil 114 mainly heats the oil recovered in the oil storage bin 113, the phenomenon that the oil is condensed due to too low temperature and cannot be conveyed to an oil tank truck or a specified position (such as the oil-water separation storage tank 15 in the embodiment) through the oil conveying pump 111 is prevented, resource recycling is carried out, and the flowability of the recovered oil is ensured so as to be convenient for conveying of the; the oil skimmer 110 is arranged on the upper plane of the oil storage bin 113, the oil skimmer 110 recovers floating oil in the oil-water separation bin 11B through an oil skimmer floating ball above the sedimentation sloping plate 116, oil-water separation is performed through the oil skimmer 110, oil treated by the oil skimmer 110 enters the oil storage bin 113, water treated by the oil skimmer 110 enters a second liquid phase channel in the oil-water separation bin 11B again, and the water is transferred to the next treatment unit through the slurry transferring pump 11C.

It should be noted that the above-mentioned sedimentation sloping plate 116 is the existing equipment, and it is mainly used for the oil slick gathering, and the profit that overflows through first liquid phase passageway is sieved through sedimentation sloping plate 116 for the parallel runner that oil-containing sewage formed between the board flows through, because buoyancy, oil drips the come-up, hits the face and gathers under the board promptly and move to the swash plate export along the sloping plate, forms big oil drip promptly and come-up to the surface of water, forms upper oil layer face, then gets into oil skimming machine 110 through oil skimming machine floater and retrieves upper oil.

The above is a detailed introduction of the thermal cleaning treatment system for oily sludge provided by the present invention, and the structure principle and the implementation mode of the present invention are explained by applying specific examples, and the above examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. The utility model provides a thermal cleaning processing system of oiliness mud which characterized in that: the device comprises a crusher, a crushing temporary storage tank, a fluidization cleaning tank, a coarse screening machine, a coarse screening tank, a fine screening machine, a fine screening tank, a centrifugal machine tank and an oil-water separation storage tank which are sequentially communicated;

2. The thermal cleaning treatment system for oily sludge according to claim 1, characterized in that: the inside of water storage tank and broken jar of keeping in all is provided with steam heating coil.

3. The thermal cleaning treatment system for oily sludge according to claim 1, characterized in that: and the impurity outlet of the coarse screening machine is communicated with the feed inlet of the water-washing flotation machine.

4. The thermal cleaning treatment system for oily sludge according to claim 1, characterized in that: and the oily sludge in the crushing temporary storage tank is transferred to the fluidization cleaning tank through the grab bucket crane assembly.

5. The thermal cleaning treatment system for oily sludge according to claim 4, characterized in that: the grab crane assembly is a double-beam frame crane and comprises a portal frame and a grab bucket arranged on a beam at the top of the portal frame, and the crushing temporary storage tank and the fluidized cleaning tank are both arranged on the inner side of the portal frame and correspond to the grab bucket in position.

6. The thermal cleaning treatment system for oily sludge according to claim 1, characterized in that: the crusher is arranged above the temporary crushing tank, the coarse screening machine is arranged above the coarse screening tank, and the fine screening machine is arranged above the fine screening tank.

7. The thermal cleaning treatment system for oily sludge according to any one of claims 1 to 6, characterized in that: the fluidization cleaning tank comprises a main body frame, a tank body arranged on the main body frame and a variable frequency motor;

8. The thermal cleaning treatment system for oily sludge according to claim 7, characterized in that: the tank body is of a U-shaped structure, and the outer side of the tank body close to the bottom is provided with a water vapor direct heating pipe which is longitudinally distributed;

9. The thermal cleaning treatment system for oily sludge according to any one of claims 1 to 6, characterized in that: the fine screening tank comprises a sledge seat, a rectangular tank body and an oil delivery pump are mounted on the sledge seat, an overflow bin, an oil-water separation bin and an oil storage bin are sequentially arranged in the tank body, and the oil delivery pump is communicated with an oil outlet of the oil storage bin;

10. The thermal cleaning treatment system for oily sludge according to claim 9, characterized in that: a buffer plate is further arranged inside the overflow bin, and a first liquid phase channel is formed between the buffer plate and the overflow weir plate;