CN215592891U - Oil sludge pretreatment device - Google Patents

Oil sludge pretreatment device Download PDF

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Publication number
CN215592891U
CN215592891U CN202121970294.2U CN202121970294U CN215592891U CN 215592891 U CN215592891 U CN 215592891U CN 202121970294 U CN202121970294 U CN 202121970294U CN 215592891 U CN215592891 U CN 215592891U
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oil
sludge
tank
outlet
screening
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CN202121970294.2U
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李海燕
臧芳
路学喜
曲波
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Daqing Baishi Environmental Protection Technology Development Co ltd
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Daqing Baishi Environmental Protection Technology Development Co ltd
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Abstract

The utility model relates to an oil sludge pretreatment device, which belongs to the technical field of sludge treatment and comprises a sludge dehydrator, a steam boiler, a screening oil removal tank, an oil-water buffer tank and a water storage tank, wherein a vertical partition plate is arranged at one end in the screening oil removal tank to separate the screening oil removal tank into a control chamber; the screening removes the inside bottom of oil tank and installs the mud output device with sieve material device matched with, and the mud export of mud output device is arranged in the screening and is removed the oil tank outside, mud export below is equipped with rather than relative connects the mud groove. According to the oil sludge pretreatment device, the performance of the treated oil sludge is stable, the stability of a subsequent oil sludge standard treatment system is ensured, the efficiency is improved, the treatment cost is reduced, the crude oil in the oil sludge can be recovered in the treatment process, and the resource waste is reduced.

Description

Oil sludge pretreatment device
Technical Field
The utility model belongs to the technical field of sludge treatment, and particularly relates to an oil sludge pretreatment device.
Background
The oil sludge refers to a large amount of oil-containing sludge generated in the processes of crude oil exploitation, gathering and transportation, refining, oil-containing sewage treatment and the like. Because the compound contains poisonous and harmful substances such as anthracene, pyrene, phenols, benzene series, heavy metals and the like, the compound is listed as hazardous waste HW08 by the nation, has T toxicity and I inflammability, and is included in the category of hazardous waste management. In order to protect and improve the ecological environment, prevent and treat the pollution of solid wastes to the environment, guarantee public health, maintain ecological safety, promote ecological civilized construction and promote the sustainable development of economy and society, the treatment of the oil sludge is the inevitable requirement of the prevention and treatment control of the oil sludge pollution.
At present, due to the fact that oil sludge is wide in production range, complex in type and component, extremely unstable in oil content of 10-50%, and extremely unbalanced in impurity components, granularity, physical state, water content and oil content of the sludge, the problems that an oil sludge treatment device is not stable in operation, cannot continuously operate, and has high failure rate are caused. Therefore, before the oil sludge is treated, the pretreatment of the oil sludge is a precondition for ensuring the stable, efficient and low-energy operation of the subsequent oil sludge treatment.
However, most of the oil in the oily sludge is solid crude oil, which is difficult to remove from the sludge at normal temperature, and the large-particle size sludge contained in the sludge also affects the operation of the subsequent sludge treatment equipment. The existing pretreatment device washes oil-containing sludge by using hot water, and adds a medicament to separate crude oil from the sludge, but large-particle-size sludge in the sludge is not separated, the large-particle-size sludge still remains after the water washing, the water content in the sludge is increased, the subsequent operation of oil sludge treatment equipment is affected, the secondary pollution of the oil sludge is caused by adding the medicament, the medicament is difficult to remove in the subsequent treatment process, the environment is more burdened, and the crude oil in the oil sludge is difficult to recover, so that the waste of resources is caused.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides an oil sludge pretreatment device.
The utility model relates to an oil sludge pretreatment device, which comprises a sludge dehydrator, a steam boiler, a screening oil removal tank, an oil-water buffer tank and a water storage tank, wherein a vertical partition plate is arranged at one end in the screening oil removal tank to separate the screening oil removal tank into a control chamber; the bottom end in the screening and deoiling tank is provided with a sludge output device matched with the screening device, a sludge outlet of the sludge output device is arranged outside the screening and deoiling tank, a sludge receiving groove opposite to the sludge outlet is arranged below the sludge outlet, the sludge receiving groove is communicated with a sludge inlet of the sludge dehydrator through a pipeline a, and a water outlet of the sludge dehydrator is communicated with a liquid inlet of the water storage tank through a pipeline e; a dissolved gas distribution pipeline and a steam heating pipeline are arranged in a screening and oil removing tank positioned above the sludge output device, the dissolved gas distribution pipeline is communicated with a Roots blower in a control room, one end of the steam heating pipeline is communicated with a steam heat source outlet of a steam boiler through a steam inlet I, the other end of the steam heating pipeline is communicated with a steam condensate pipe j through a condensate outlet, the other end of the steam condensate pipe j is communicated with a condensate buffer box of an oil-water buffer box, and the screening device, the sludge output device and the Roots blower are all electrically connected with a control cabinet I in the control room; screening removes the inside opposite side upper end of oil tank and is equipped with the oil receiving groove, and oil receiving groove department opens there is the oil export, and the oil export is through pipeline h and I intercommunication of oil inlet of the oil buffer case of profit buffer case.
As a further improvement of the utility model, the inlet of the feeding groove is connected with a conveying device I, a slag receiving groove opposite to the screening outlet is arranged below the screening outlet, the slag receiving groove is connected with a crusher through a conveying device II, a slag crushing groove opposite to the bottom outlet is arranged below the crusher, and the slag crushing groove is connected with the conveying device I through a conveying device III.
As a further improvement of the utility model, a solid sludge conveyor opposite to the bottom solid sludge outlet of the sludge dewatering machine is arranged at the bottom solid sludge outlet of the sludge dewatering machine, a solid sludge buffer tank matched with the solid sludge conveyor is arranged at the outlet end of the solid sludge conveyor, and the solid sludge buffer tank is connected with a conveying device IV.
As a further improvement of the utility model, a feeding flushing device is arranged above the feeding trough, and a water outlet of the water storage tank is communicated with a water inlet of the feeding flushing device through a reuse water pump and a pipeline i.
As a further improvement of the utility model, a water mixing pump is arranged at a condensed water outlet of the condensed water buffer tank, and the other end of the water mixing pump is respectively communicated with a water mixing return inlet of the screening and oil removing tank and a water inlet of a steam boiler through a pipeline c and a pipeline d.
As a further improvement of the utility model, an oil tank liquid level meter is arranged on the oil buffer tank, and an oil outlet of the oil buffer tank is communicated with an oil inlet II of the oil storage tank through an oil pump and a pipeline b.
As a further improvement of the utility model, one side of the oil storage tank is provided with a steam inlet II and a condensed water outlet II, the oil outlet at the other side is provided with an oil discharge pump, the steam inlet II is communicated with a steam heat source outlet through a pipeline f, and the condensed water outlet II is communicated with a condensed water cache tank through a pipeline g.
According to the oil sludge pretreatment device, the sludge is screened by the screening device, the screened large-particle sludge is crushed, the oil sludge is sufficiently screened, and the influence of the large-particle-size oil sludge on the operation of subsequent oil sludge treatment equipment is prevented; the oil sludge in the oil removal tank body is heated in the whole process by utilizing the steam heating pipeline, so that crude oil in the oil removal tank body is changed into a liquid state from a solid state and is separated from the sludge, meanwhile, micro bubbles are released through the gas dissolving and distributing pipeline, floating oil, dispersed oil or suspended particles in water are adhered to the bubbles and float to the water surface along with the bubbles, the crude oil in the oil sludge can be separated from the sludge without adding a medicament, the crude oil content in the oil sludge is greatly reduced, and the influence of excessive oil content in the sludge or the influence of the residual medicament on the subsequent treatment of the oil sludge can be prevented; and finally, the sludge is dehydrated to prevent the sludge from containing a large amount of water containing oil to influence the subsequent treatment. The method has the advantages of reducing treatment effect on oil sludge treatment, conforming to the solid waste reduction treatment principle, reducing environmental pollution, ensuring the stability of a subsequent oil sludge standard treatment system due to stable performance of the treated oil sludge, improving efficiency, reducing treatment cost, recovering crude oil in the oil sludge in the treatment process and reducing resource waste.
Drawings
FIG. 1 is a schematic structural diagram of an oil sludge pretreatment device according to the present invention;
FIG. 2 is a front view of the screening de-oiling box, the screening device, the feeding trough, the Roots blower, the control cabinet I, the feeding flushing device and the sludge output device of the utility model;
FIG. 3 is a left side view of the screening de-oiling box, the screening device, the feeding trough, the Roots blower, the control cabinet I, the feeding flushing device and the sludge output device of the utility model;
FIG. 4 is a schematic view of the structure of the crusher and the slag chute of the present invention;
FIG. 5 is a schematic view showing the construction of the sludge dewatering apparatus 4 and the solid-state sludge conveyor 31 according to the present invention;
FIG. 6 is a schematic view of the oil and water buffer tank of the present invention;
FIG. 7 is a schematic structural diagram of a steam boiler and a control cabinet II of the present invention;
FIG. 8 is a schematic view of the structure of the oil storage tank of the present invention;
fig. 9 is a schematic view of the structure of the water storage tank of the present invention.
Detailed Description
The utility model relates to an oil sludge pretreatment device which comprises a screening oil removal tank 1, an oil-water buffer tank 2, a water storage tank 3, a sludge dehydrator 4, a steam boiler 5 and an oil storage tank 44, wherein the screening oil removal tank 1 can preserve heat, the whole device adopts a skid-mounted structure, the bottoms of the oil-water buffer tank 2, a solid sludge conveyor 31, the water storage tank 3 and the oil storage tank 44 are respectively provided with a skid seat, the steam boiler 5 and a control cabinet II 42 electrically connected with the steam boiler are arranged in the skid body, the skid-mounted structure is convenient to transport and mount, the occupied area is small, and the mounting site has strong adaptability. The oil removing box body 1 is formed by connecting a treatment box body 47 with an inverted trapezoidal longitudinal section with a transmission box body 48 with a rectangular lower longitudinal section, and ladder platforms 49 are arranged on two sides of the oil removing box body 1. One end in the screening oil removal tank 1 is provided with a vertical partition plate to divide the control chamber 6 into, a Roots blower 51 and a control cabinet I20 are arranged in the control chamber 6, and the Roots blower 51 is electrically connected with the control cabinet I20.
Screening removes to install screening plant 7 on the one end of oil tank 1, and screening plant such as mechanical grid or shale shaker can be selected to screening plant 7, selects the screening plant 7 of different specifications according to the requirement of subsequent processing. The entry of screen (ing) material device 7 is relative with the export of upper chute 8, export and screening remove the export 9 intercommunications of the outside screening of oil tank 1, the import department of upper chute 8 is connected with conveying equipment I25, fatlute passes through conveying equipment I25 and carries in the upper chute 8, upper chute 8 can play the cushioning effect to the fatlute of carrying, can make fatlute contact with screen (ing) material device 7 uniformly, the fatlute that the particle diameter is greater than screen (ing) material device 7 aperture is stayed on screen (ing) material device 7, the fatlute that the particle diameter is less than screen (ing) material device 7 aperture falls into deoiling box 1. Go up 8 tops of silo and be equipped with feeding washing unit 34, feeding washing unit 34 is the shower, is equipped with the shower nozzle relative with last silo 8 and sieve material device 7 on the shower, and feeding washing unit 16 is to going up in the silo 8 and sieve material device 7 department blowout hot water, can heating, washing the bold fatlute that bonds together, makes its dispersion, can improve sieve material device 7's screening efficiency.
The screening export 9 below is equipped with rather than relative connects the sediment groove 26, and large granule fatlute enters into through screening export 9 and connects the sediment inslot 26, connects the sediment groove 26 to pass through conveying equipment II 27 and is connected with breaker 28, and breaker 28 is the biax breaker, can select the breaker 28 of different models according to actual demand, and large granule fatlute is broken in breaker 28. The crusher 28 is provided with a slag crushing groove 29 opposite to the bottom outlet, crushed oil sludge enters the slag crushing groove 29, the slag crushing groove 29 is connected with a conveying device I25 through a conveying device III 30, and the crushed oil sludge is conveyed into the conveying device I through the conveying device III 30 and enters the feeding groove 8 again and is sieved through the sieving device 7.
The sludge output device 10 is arranged at the joint of the treatment box body 47 and the transmission box body 48, the sludge outlet 11 of the sludge output device 10 is arranged outside the screening and oil removing box 1, and the sludge receiving groove 12 opposite to the sludge outlet 11 is arranged below the sludge outlet. The sludge output device 10 is a scraper conveyor, and the sludge output device 10 is matched with the screening device 7 and is electrically connected with the control cabinet 13; a drain port 50 is provided at the bottom of the transmission case 48 to drain impurities such as sludge remaining in the sieving/oil-removing tank 1. A gas dissolving and distributing pipeline 14 and a steam heating pipeline 15 are arranged in the treatment box body 47 above the sludge output device 10, the gas dissolving and distributing pipeline 14 is communicated with the Roots blower 51, one end of the steam heating pipeline 15 is communicated with a steam heat source outlet 17 of the steam boiler 5 through a steam inlet I16, the other end of the steam heating pipeline is communicated with a steam condensate pipe j through a condensate outlet 18, and the other end of the steam condensate pipe j is communicated with a condensate buffer box 19 of the oil-water buffer box 2.
The steam boiler 5 conveys steam into the steam heating pipeline 15, so that crude oil in the oil sludge in the oil removal box body 1 is converted from a solid state into a liquid state, and the oil is removed from the oil sludge; the steam is conveyed to a steam condensate pipe j through a condensate outlet 18, and condensed condensate enters a condensate buffer tank 19. The condensed water outlet of the condensed water buffer tank 19 is provided with a water mixing pump 35, the other end of the water mixing pump 35 is respectively communicated with the water mixing inlet of the screening oil removing tank 1 and the water inlet of the steam boiler 5 through a pipeline c and a pipeline d, the condensed water in the condensed water buffer tank 19 can be recycled, and the produced water of the steam boiler 5 is conveyed to the screening oil removing tank 1 through a pipeline for recycling, so that the resource waste is prevented.
Screening removes that the inside opposite side upper end of oil tank 1 is equipped with oil receiving groove 21, and oil receiving groove 21 department opens there is oily export 22, and oily export 22 communicates through pipeline h and oil inlet I24 of the oily buffer tank 23 of profit buffer tank 2, and the crude oil that separates enters into in oily buffer tank 23 through oily export 22. The oil buffer tank 23 is provided with an oil tank liquid level meter 36, an oil outlet of the oil buffer tank 23 is communicated with an oil inlet II 38 of the oil storage tank 44 through an oil pump 37 and a pipeline b, and when the oil in the oil buffer tank 23 reaches a preset liquid level height, the oil pump is started to convey the oil into the oil storage tank 44. And a steam inlet II 39 and a condensed water outlet II 40 are arranged on one side of the oil storage tank 44, an oil discharge pump 41 is arranged at the oil outlet on the other side, the steam inlet II 39 is communicated with the steam heat source outlet 17 through a pipeline f, and the condensed water outlet II 40 is communicated with the condensed water buffer tank 19 through a pipeline g. The steam boiler 5 conveys steam into the steam inlet II 39, so that the crude oil in the oil storage tank 44 can be kept in a liquid state all the time, and the steam is discharged through the condensed water outlet II 40 and enters the condensed water buffer tank 19 after being condensed.
The sludge receiving groove 12 is communicated with a sludge inlet of the sludge dewatering machine 4 through a pipeline a and a sludge inlet pump 45, the sludge dewatering machine 4 can select a filter-press dewatering machine or a centrifugal machine, and the sludge dewatering machines 4 of different models can be selected according to actual requirements. The water outlet of the sludge dewatering machine 4 is communicated with the liquid inlet 13 of the water storage tank 3 through a pipeline e and a liquid outlet pump 46. A solid-state sludge conveyor 31 opposite to the solid-state sludge conveyor is arranged at a solid-state sludge outlet at the bottom of the sludge dewatering machine 4, a solid-state sludge buffer tank 32 matched with the solid-state sludge conveyor 31 is arranged at an outlet end of the solid-state sludge conveyor, and the solid-state sludge buffer tank 32 is connected with a conveying device IV 33. The sludge after deoiling enters a sludge dewatering machine 4 for dewatering, the dewatered sludge is conveyed to a solid sludge buffer tank 32 through a solid sludge conveyor 31, and then conveyed into a subsequent sludge harmless treatment device through conveying equipment IV 33, and dewatering water in the sludge passes through. The water outlet of the water storage tank 3 is communicated with the water inlet of the feeding and flushing device 34 through the reuse water pump 43 and the pipeline i, and water in the water storage tank 3 enters the feeding and flushing device 34 for cyclic utilization, so that resource waste is prevented.
The conveying equipment I25, the conveying equipment II 27, the conveying equipment III 30 and the conveying equipment IV 33 can select equipment with conveying functions according to actual production conditions, such as: a forklift, a screw conveyor, a screw pump, etc.
When the oily sludge is pretreated, the oily sludge is conveyed into the feeding chute 8 through conveying equipment I25, the oily sludge is washed by the feeding washing device 34, and the screening device 7 is started to screen the oily sludge; in the tiny particle fatlute fell into the screening except that in the oil tank 1, large granule fatlute received the sediment groove 26 through the entering of screening thing export 9, received the fatlute in the sediment groove 26 and sent into the breaker 28 in and carry out the breakage, and the fatlute after the breakage was sieved through sieve material device 7 again to it removes in the oil tank 1 to go into the screening. Starting a steam boiler 5, heating the oil sludge in the screening oil removal tank 1 by using a steam heating pipeline 15, so that crude oil in the oil sludge is changed from a solid state to a liquid state and is separated from the sludge, discharging the steam through a condensed water outlet 18, and condensing the steam and then entering a condensed water buffer tank 19; the sludge is settled on a sludge output device 10 at the bottom of the oil removing box body 1. The roots blower 51 is then turned on to release the micro bubbles from the gas distribution pipeline 14, so that the floating oil, the dispersed oil or the impurity particles suspended in the water are adhered to the bubbles and float to the water surface together with the bubbles, and the separated oil is collected in the oil collecting tank 21 and discharged into the oil storage tank 44 through the oil outlet 22. The steam boiler 5 conveys steam into the steam inlet II 39, so that the crude oil in the oil storage tank 44 can be kept in a liquid state all the time, and the steam is discharged through the condensed water outlet II 40 and enters the condensed water buffer tank 19 after being condensed.
The sludge after deoiling is conveyed to a sludge outlet 11 by a sludge output device 10 and enters a sludge receiving groove 12 through the sludge outlet 11, the sludge in the sludge receiving groove 12 enters a sludge dewatering machine 4 for dewatering treatment, the dewatered water is stored in a water storage tank 3, and the dewatered sludge enters a subsequent sludge harmless treatment device.
The water in the water storage tank 3 and the condensed water buffer tank 19 and the water generated by the steam boiler 5 can be returned to the feeding flushing device 34 for cyclic utilization, so that the sludge is flushed, and the waste of water resources is avoided.

Claims (7)

1. An oil sludge pretreatment device comprises a sludge dewatering machine (4) and a steam boiler (5), and is characterized by further comprising a screening oil removal tank (1), an oil-water buffer tank (2) and a water storage tank (3), wherein a vertical partition plate is arranged at one end in the screening oil removal tank (1) to separate the screening oil removal tank from a control chamber (6), a screening device (7) is installed at one end of the screening oil removal tank (1), the inlet of the screening device (7) is opposite to the outlet of a feeding groove (8), and the outlet of the screening device is communicated with a screened material outlet (9) outside the screening oil removal tank (1); the bottom end in the screening and oil removing tank (1) is provided with a sludge output device (10) matched with the screening device (7), a sludge outlet (11) of the sludge output device (10) is arranged outside the screening and oil removing tank (1), a sludge receiving groove (12) opposite to the sludge outlet (11) is arranged below the sludge outlet (11), the sludge receiving groove (12) is communicated with a sludge inlet of the sludge dewatering machine (4) through a pipeline a, and a water outlet of the sludge dewatering machine (4) is communicated with a liquid inlet (13) of the water storage tank (3) through a pipeline e; a dissolved air distribution pipeline (14) and a steam heating pipeline (15) are arranged in a screening de-oiling box (1) above a sludge output device (10), the dissolved air distribution pipeline (14) is communicated with a roots fan (51) in a control room (6), one end of the steam heating pipeline (15) is communicated with a steam heat source outlet (17) of a steam boiler (5) through a steam inlet I (16), the other end of the steam heating pipeline is communicated with a steam condensate water pipe j through a condensate water outlet (18), the other end of the steam condensate water pipe j is communicated with a condensate water buffer box (19) of an oil-water buffer box (2), and the screening device (7), the sludge output device (10) and the roots fan (51) are all electrically connected with a control cabinet I (20) in the control room (6); an oil receiving groove (21) is formed in the upper end of the other side in the screening oil removing tank (1), an oil outlet (22) is formed in the oil receiving groove (21), and the oil outlet (22) is communicated with an oil inlet I (24) of an oil buffer tank (23) of the oil-water buffer tank (2) through a pipeline h.
2. The oil sludge pretreatment device as claimed in claim 1, characterized in that the inlet of the feeding tank (8) is connected with a conveying device I (25), the lower part of the screening outlet (9) is provided with a slag receiving tank (26) opposite to the feeding tank, the slag receiving tank (26) is connected with a crusher (28) through a conveying device II (27), the lower part of the crusher (28) is provided with a slag crushing tank (29) opposite to the outlet at the bottom of the crusher, and the slag crushing tank (29) is connected with the conveying device I (25) through a conveying device III (30).
3. The sludge pretreatment device as claimed in claim 1, characterized in that a solid sludge conveyor (31) is arranged at the bottom solid sludge outlet of the sludge dewatering machine (4) and is opposite to the bottom solid sludge outlet, the outlet end of the solid sludge conveyor (31) is provided with a solid sludge buffer tank (32) matched with the solid sludge conveyor, and the solid sludge buffer tank (32) is connected with a conveying device IV (33).
4. The sludge pretreatment apparatus as claimed in claim 1, wherein a feed flushing device (34) is provided above the loading tank (8), and the water outlet of the water storage tank (3) is communicated with the water inlet of the feed flushing device (34) through a reuse water pump (43) and a pipeline i.
5. The sludge pretreatment apparatus as claimed in claim 1, wherein a water blending pump (35) is provided at a condensate outlet of the condensate buffer tank (19), and the other end of the water blending pump (35) is respectively communicated with a water blending inlet of the oil screening and removing tank (1) and a water inlet of the steam boiler (5) through a pipeline c and a pipeline d.
6. The oil sludge pretreatment device according to claim 1, characterized in that an oil tank liquid level meter (36) is arranged on the oil buffer tank (23), and an oil outlet of the oil buffer tank (23) is communicated with an oil inlet II (38) of the oil storage tank (44) through an oil pump (37) and a pipeline b.
7. The sludge pretreatment apparatus as claimed in claim 6, wherein the oil storage tank (44) is provided with a steam inlet II (39) and a condensate outlet II (40) at one side thereof, and an oil discharge pump (41) at an oil outlet at the other side thereof, the steam inlet II (39) is communicated with the steam heat source outlet (17) through a pipe f, and the condensate outlet II (40) is communicated with the condensate buffer tank (19) through a pipe g.
CN202121970294.2U 2021-08-20 2021-08-20 Oil sludge pretreatment device Active CN215592891U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121970294.2U CN215592891U (en) 2021-08-20 2021-08-20 Oil sludge pretreatment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121970294.2U CN215592891U (en) 2021-08-20 2021-08-20 Oil sludge pretreatment device

Publications (1)

Publication Number Publication Date
CN215592891U true CN215592891U (en) 2022-01-21

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ID=79882200

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121970294.2U Active CN215592891U (en) 2021-08-20 2021-08-20 Oil sludge pretreatment device

Country Status (1)

Country Link
CN (1) CN215592891U (en)

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