CN211255650U

CN211255650U - Oil sludge pyrolysis system

Info

Publication number: CN211255650U
Application number: CN201922168248.XU
Authority: CN
Inventors: 臧海; 赵成军; 马洪涛; 刘伟; 张福超
Original assignee: Yulin Qinluke Waste Oil Treatment Co ltd
Current assignee: Yulin Qinluke Waste Oil Treatment Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-08-14
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses an oil sludge pyrolysis system, which comprises an oil sludge pyrolysis device and a smoke treatment device, wherein the oil sludge pyrolysis device comprises a rotary kiln component, a feeding device and a smoke outlet are arranged at the feeding end of the rotary kiln component, a discharging device and a material heating device are arranged at the discharging end, the smoke treatment device comprises a hot blast stove, a quench tower, a dust remover and an exhaust component which are sequentially communicated, the air inlet end of the hot blast stove is provided with an air blower, a smoke heating device and a second air inlet, the second air inlet is communicated with the smoke outlet, the innovation of the application is that the air outlet end of the hot blast stove is provided with a smoke circulating outlet, the rotary kiln component is provided with a smoke circulating inlet, the smoke circulating outlet is connected with the smoke circulating inlet through a circulating pipeline, so that pyrolysis gas in the hot blast stove can be reintroduced into the rotary kiln, not only prolongs the retention time of the pyrolysis gas in the system, but also makes the waste heat of the pyrolysis gas be reused.

Description

Oil sludge pyrolysis system

Technical Field

The utility model belongs to the technical field of the fatlute pyrolysis technique and specifically relates to a fatlute pyrolysis system is related to.

Background

The oily sludge refers to sludge mixed with crude oil, various finished oils, residual oil and other heavy oils. The oil-containing sludge is not inherent in nature, but is oil, soil, water and even a mixture mixed with other pollutants such as oil, soil, water and the like which are formed by the fact that the oil-containing sludge is leaked, blown, dripped and leaked to the ground, deposited to the ocean, the lake and the river bottom and mixed with the soil, the water and the like due to various accidents, improper operation, old equipment, damage, corrosion and the like of various industries, civilian use, personnel and the like related to crude oil and product oil in oil field exploitation, oil refining process, transportation, use, storage and the like. Oily sludge is harmful to human bodies and plants and water organisms, oil gas evaporated in the air can stimulate the skin, eyes and respiratory organs, so that the land loses the function of plant growth, and the oily sludge is difficult to treat and repair and is one of the main pollutants in the petroleum and petrochemical industry.

Therefore, in order to protect the environment and need to handle oily sludge, there is a sludge pyrolysis treatment process at present, send oily sludge into the rotary kiln and carry out pyrolysis, the solid matter after the pyrolysis is discharged from the rotary kiln discharge gate, and the flue gas discharges the hot-blast furnace from the rotary kiln gas outlet, then enters the dust remover after cooling by the quench tower, discharges through the chimney after the dust removal, and the flue gas that gets into in the quench tower from the hot-blast furnace is hot flue gas, and direct emission can have the following problem: the existing time of the flue gas in the system is short, pollutants can not be completely decomposed, and the emission standard can not be reached during emission; the heat of the flue gas is wasted.

Therefore, how to solve the above problems becomes a technical problem which needs to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fatlute pyrolysis system to direct emission of flue gas leads to discharging not up to standard and the heat is by extravagant problem among the solution prior art.

The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pair of fatlute pyrolysis system, include:

the oil sludge pyrolysis device comprises a rotary kiln assembly, wherein a feed port and a smoke outlet are formed in the feed end of the rotary kiln assembly, a discharge port and a first heating port are formed in the discharge end of the rotary kiln assembly, a feed device is arranged at the feed port, a discharge device is arranged at the discharge port, and a material heating device is arranged at the first heating port;

the flue gas treatment device comprises a hot blast stove, a quench tower, a dust remover and an exhaust assembly which are sequentially communicated, wherein a first air inlet, a second air inlet and a second heating port are formed in the air inlet end of the hot blast stove, the first air inlet is connected with a blower, the second air inlet is connected with a flue gas outlet, and a flue gas heating device is arranged at the second heating port;

the air outlet end of the hot blast stove is also provided with a flue gas circulation outlet, the rotary kiln component is provided with a flue gas circulation inlet, and a circulation pipeline is arranged between the flue gas circulation outlet and the flue gas circulation inlet.

Preferably, the circulating pipeline comprises an air inlet pipe, an air outlet pipe and a circulating fan, one end of the air inlet pipe is connected with the flue gas circulating outlet, the other end of the air inlet pipe is connected with an air inlet of the circulating fan, one end of the air outlet pipe is connected with an air outlet of the circulating fan, and the other end of the air outlet pipe is connected with the flue gas circulating inlet.

Preferably, the rotary kiln assembly comprises an upper rotary kiln and a lower rotary kiln, the upper rotary kiln and the lower rotary kiln are vertically distributed, a discharge end of the upper rotary kiln is communicated with a feed end of the lower rotary kiln, the feed port and the flue gas outlet are arranged at the feed end of the upper rotary kiln, and the discharge port and the heating port are arranged at the discharge end of the lower rotary kiln.

Preferably, a diversion bin is arranged between the upper rotary kiln and the lower rotary kiln, the discharge end of the upper rotary kiln is connected with the upper part of the diversion bin, and the feed end of the lower rotary kiln is connected with the lower part of the diversion bin.

Preferably, the gas outlet pipe comprises a main pipeline, and a first branch pipeline and a second branch pipeline which are connected with the main pipeline, the flue gas circulation inlet comprises a first flue gas circulation inlet arranged on the diversion bin and a second flue gas circulation inlet arranged at the discharge end of the lower rotary kiln, the gas outlet end of the first branch pipeline is communicated with the first flue gas circulation inlet, and the gas outlet end of the second branch pipeline is communicated with the second flue gas circulation inlet.

Preferably, a first pressure gauge, a first temperature gauge and a first air valve are arranged on the first branch pipeline, and a second pressure gauge and a second temperature gauge are arranged on the diversion bin.

Preferably, a third pressure gauge, a third temperature gauge and a second air valve are arranged on the second branch pipeline, and a fourth pressure gauge and a fourth temperature gauge are arranged at the discharge end of the lower rotary kiln.

Preferably, the feeding device and the discharging device are both screw conveyors.

Preferably, the material heating device and the flue gas heating device are both burners.

Preferably, the exhaust assembly comprises an induced draft fan connected with the dust remover and a chimney connected with an air outlet of the induced draft fan.

The utility model provides a pair of fatlute pyrolysis system, its beneficial effect is:

the utility model provides a fatlute pyrolysis system, including fatlute pyrolysis device and flue gas processing apparatus, fatlute pyrolysis device includes the rotary kiln subassembly, the feed end of rotary kiln subassembly is provided with feed inlet and exhanst gas outlet, the discharge end is provided with discharge gate and first heating port, feed inlet department is provided with feed arrangement, discharge gate department is provided with discharging device, first heating port department is provided with heating device, flue gas processing apparatus includes the hot-blast furnace, the quench tower who is connected with the gas outlet of hot-blast furnace, the dust remover that is connected with the gas outlet of quench tower and the exhaust subassembly that is connected with the gas outlet of dust remover, the gas inlet of hot-blast furnace is provided with first air inlet, second air inlet and second heating port, the first air inlet department is connected with the air-blower for carrying air in the hot-blast furnace, the second air inlet communicates with the above-mentioned exhanst, the innovation of the hot blast stove is that a flue gas circulation outlet is further arranged at the air outlet end of the hot blast stove, a flue gas circulation inlet is arranged on the rotary kiln component, and a circulation pipeline is arranged between the flue gas circulation outlet and the flue gas circulation inlet. When the rotary kiln is used, oily sludge is conveyed into the rotary kiln component through the feeding device, the material heating device heats and pyrolyzes the oily sludge in the rotary kiln component, solid materials are discharged from a discharge port of the rotary kiln through the discharging device, pyrolysis gas is discharged from a flue gas outlet and enters the hot blast stove, meanwhile, the air blower supplies air into the hot blast stove, the flue gas heating device heats flue gas in the hot blast stove and further pyrolyzes the flue gas, then a part of the flue gas enters the quench tower, the cooled flue gas enters the dust remover for dust removal, and finally the cooled flue gas is discharged through the exhaust component, and a part of the flue gas returns to the rotary kiln component through the circulating pipeline again. The heating power of the material heating device can be reduced, and the energy is saved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a flow chart of a sludge pyrolysis system according to an embodiment of the present invention;

FIG. 2 is a flow diagram of a sludge pyrolysis apparatus according to an embodiment of the present invention;

fig. 3 is a flow chart of a flue gas treatment device according to an embodiment of the present invention.

In the figure: 1. a flue gas outlet; 2. a feeding device; 3. a discharging device; 4. a material heating device; 5. a hot blast stove; 6. a quench tower; 7. a dust remover; 8. a first air inlet; 9. a second air inlet; 10. a blower; 11. a flue gas heating device; 12. a flue gas circulation outlet; 1301. a first flue gas recirculation inlet; 1302. a second flue gas recirculation inlet; 14. an air inlet pipe; 15. an air outlet pipe; 1501. a main pipeline; 1502. a first branch line; 1503. a second branch line; 16. a circulating fan; 17. an upper rotary kiln; 18. a lower rotary kiln; 19. a diversion bin; 20. a first pressure gauge; 21. a first thermometer; 22. a first air valve; 23. a second pressure gauge; 24. a second thermometer; 25. a third pressure gauge; 26. a third thermometer; 27. a second air valve; 28. a fourth pressure gauge; 29. a fourth thermometer; 30. an induced draft fan; 31. a chimney; 32. a feeding bin; 33. and a discharging bin.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to fig. 1 to 3, the utility model provides an oil sludge pyrolysis system, which comprises an oil sludge pyrolysis device and a flue gas treatment device, wherein the oil sludge pyrolysis device comprises a rotary kiln assembly, a feed port and a flue gas outlet 1 are arranged at the feed end of the rotary kiln assembly, a discharge port and a first heating port are arranged at the discharge end of the rotary kiln assembly, a feed device 2 for conveying oil sludge in the rotary kiln assembly is arranged at the feed port, a discharge device 3 is arranged at the discharge port, and a material heating device 4 is arranged at the first heating port; the flue gas treatment device comprises a hot blast stove 5 and a quench tower 6, dust remover 7 and exhaust subassembly, the inlet end of hot-blast furnace 5 is provided with first air inlet 8, second air inlet 9 and second heating port, first air inlet 8 department is provided with air-blower 10 to the interior transported air of hot-blast furnace 5, second air inlet 9 passes through the pipeline and is connected with flue gas outlet 1 on the rotary kiln subassembly, second heating port department is provided with flue gas heating device 11, the end of giving vent to anger of hot-blast furnace 5 and the inlet end intercommunication of quench tower 6, the end of giving vent to anger of quench tower 6 and the inlet end intercommunication of dust remover 7, dust remover 7 can be sack cleaner 7, the end of giving vent to anger of dust remover 7 is connected with the exhaust subassembly, the innovation of this application lies in still being provided with flue gas circulation export 12 at the end of giving vent to anger of hot-blast furnace 5, be provided with the flue gas circulation entry on the rotary kiln. When the device is used, the oil sludge is conveyed into the rotary kiln component through the feeding device 2, the material heating device 4 at the first heating port provides heat energy for the interior of the rotary kiln component, so that the internal oil sludge is pyrolyzed, the rotary kiln component continuously rotates to enable the internal oil sludge to be heated uniformly, finally, the solid material is discharged out of the rotary kiln component through the discharging device 3 from the discharging end of the rotary kiln component, the pyrolysis gas enters the hot blast stove 5 from the flue gas outlet 1 through a pipeline, meanwhile, the air blower 10 continuously inputs air into the hot blast stove 5, the flue gas heating device 11 heats the mixed gas in the hot blast stove 5 to further pyrolyze the internal pyrolysis gas, so that harmful substances are fully pyrolyzed, then, a part of the pyrolysis gas enters the quenching tower 6 from the gas outlet end of the hot blast stove 5 to be cooled, then enters the dust remover 7, and is discharged out of the exhaust component after being deduste, a part pyrolysis gas gets into the flue gas circulation entry from flue gas circulation export 12 through the circulating line, get into the rotary kiln subassembly again, pyrolysis gas's dwell time in the system obtains the extension, obtain more pyrolysis time, make more abundant of its pyrolysis, it reaches emission standard more easily, pyrolysis gas is high temperature gas simultaneously, get back to the rotary kiln subassembly again through the circulating line, can improve the temperature in the rotary kiln subassembly, carry out the reutilization with pyrolysis gas's waste heat, material heating device 4's pressure has been reduced, the energy has been saved.

Further, the circulation pipeline comprises an air inlet pipe 14, an air outlet pipe 15 and a circulation fan 16, one end of the air inlet pipe 14 is connected with the flue gas circulation outlet 12, the other end of the air inlet pipe is connected with an air inlet of the circulation fan 16, one end of the air outlet pipe 15 is connected with an air outlet of the circulation fan 16, and the other end of the air outlet pipe is connected with the flue gas circulation inlet.

In implementation, the rotary kiln assembly may include an upper rotary kiln 17 and a lower rotary kiln 18, each of the upper rotary kiln 17 and the lower rotary kiln 18 includes a cylindrical rotary kiln body, a cavity for pyrolysis of sludge is formed inside the cylindrical rotary kiln body, a feeding bin 32 may be disposed at a feeding end of the upper rotary kiln 17, one end of the feeding bin 32 close to the upper rotary kiln 17 is communicated with the upper rotary kiln 17, and a connection portion of the feeding bin 32 is in rotary dynamic sealing connection, one side of the feeding bin 32 far away from the upper rotary kiln 17 is communicated with a feeding device 2, and the connection portion is in static sealing connection, the flue gas outlet 1 may be disposed at a top or a side of the feeding bin 32, the feeding bin 32 may be further provided with a pressure gauge and a temperature gauge, pressure and temperature at the feeding bin 32 may be monitored in real time, the feeding end of the upper rotary kiln 17 is higher than a discharging end, the upper rotary, the lower rotary kiln 18 can be arranged below the upper rotary kiln 17, the axes of the lower rotary kiln 18 and the upper rotary kiln 17 can be positioned on the same vertical plane, one end corresponding to the discharge end of the upper rotary kiln 17 is the feed end of the lower rotary kiln 18, a diversion bin 19 can be arranged between the discharge end of the upper rotary kiln 17 and the feed end of the lower rotary kiln 18, the diversion bin 19 is of a hollow structure, the lower rotary kiln 18 and the lower rotary kiln 18 are respectively communicated, the bottom of the diversion bin 19 can be conical, the lower side wall is of a structure inclined towards the feed end of the lower rotary kiln 18, so that materials can enter the lower rotary kiln 18, the discharge end of the lower rotary kiln 18 corresponding to the feed end of the upper rotary kiln 17 can be provided with a hollow discharge bin 33, the discharge bin 33 is communicated with the discharge end of the lower rotary kiln 18 and the connection part is in a rotary dynamic sealing manner, the discharge hole is arranged at the bottom of the discharge bin 33, and the discharge device, discharging device's material receiving mouth corresponds with the discharge gate, sets up the ash bucket that is used for transporting solid material in discharging device 3's bottom ejection of compact position, and material heating device 4 sets up one side and the junction of rotary kiln 18 under keeping away from in ejection of compact storehouse 33 and be quiet sealing connection, also can set up manometer and thermometer on ejection of compact storehouse 33, observes the pressure and the temperature of ejection of compact storehouse 33 department in real time.

Preferably, the outlet pipe 15 may include a main pipe 1501, and a first branch pipe 1502 and a second branch pipe 1503 connected to the main pipe 1501, the first branch pipe 1502 and the second branch pipe 1503 are connected in parallel, two flue gas circulation inlets may be provided, one is a first flue gas circulation inlet 1301 provided on the diversion warehouse 19 far away from the upper rotary kiln 17, and the other is a second flue gas circulation inlet 1302 provided on the discharge warehouse 33, and two inlet branch pipes are provided to make the heat of the flue gas fully utilized.

In an implementation, the first branch pipeline 1502 may be provided with a first pressure gauge 20, a first temperature gauge 21 and a first air valve 22, the diversion bin 19 may be provided with a second pressure gauge 23 and a second temperature gauge 24, an opening degree of the first air valve 22 may be determined according to the pressure and the temperature inside the diversion bin 19 and the first branch pipeline 1502, when the temperature inside the diversion bin 19 is greater than a required value, the supply of the pyrolysis gas may be reduced by controlling the first air valve 22, and when the temperature inside the diversion bin 19 is less than the required value, the supply of the pyrolysis gas may be increased by controlling the first air valve 22.

Similarly, the second branch line 1503 may be provided with a third pressure gauge 25, a third temperature gauge 26 and a second air valve 27, the discharging bin 33 may be provided with a fourth pressure gauge 28 and a fourth temperature gauge 29, the opening of the second air valve 27 may be determined according to the pressure and temperature inside the discharging bin 33 and inside the second branch line 1503, when the temperature inside the discharging bin 33 is greater than a desired value, the supply of the pyrolysis gas may be reduced by controlling the second air valve 27, and when the temperature inside the discharging bin 33 is less than the desired value, the supply of the pyrolysis gas may be increased by controlling the second air valve 27.

In addition, the pyrolysis gas unidirectional flow among the fatlute pyrolysis system of current, but pyrolysis gas multi-branch flow in this application, multi-branch control makes the velocity of flow and the temperature of pyrolysis gas more easily obtain controlling.

In the implementation, the feeding device 2 and the discharging device 3 may be screw conveyors, which are prior art and need not be described herein.

The material heating device 4 and the flue gas heating device 11 may be burners, and the burners are also in the prior art, and need not be described herein.

The exhaust assembly may include an induced draft fan 30 connected to the air outlet end of the dust collector 7 and a chimney 31 connected to the air outlet end of the induced draft fan 30.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A sludge pyrolysis system, comprising:

the oil sludge pyrolysis device comprises a rotary kiln assembly, wherein a feed port and a smoke outlet (1) are formed in the feed end of the rotary kiln assembly, a discharge port and a first heating port are formed in the discharge end of the rotary kiln assembly, a feed device (2) is arranged at the feed port, a discharge device (3) is arranged at the discharge port, and a material heating device (4) is arranged at the first heating port;

the flue gas treatment device comprises a hot blast stove (5), a quench tower (6), a dust remover (7) and an exhaust assembly which are sequentially communicated, wherein a first air inlet (8), a second air inlet (9) and a second heating port are formed in the air inlet end of the hot blast stove (5), the first air inlet (8) is connected with an air blower (10), the second air inlet (9) is connected with the flue gas outlet (1), and a flue gas heating device (11) is arranged at the second heating port;

the gas outlet end of the hot blast stove (5) is also provided with a flue gas circulation outlet (12), the rotary kiln component is provided with a flue gas circulation inlet, and a circulation pipeline is arranged between the flue gas circulation outlet (12) and the flue gas circulation inlet.

2. The oil sludge pyrolysis system as claimed in claim 1, wherein the circulation pipeline comprises an air inlet pipe (14), an air outlet pipe (15) and a circulation fan (16), one end of the air inlet pipe (14) is connected with the flue gas circulation outlet (12), the other end of the air inlet pipe is connected with an air inlet of the circulation fan (16), one end of the air outlet pipe (15) is connected with an air outlet of the circulation fan (16), and the other end of the air outlet pipe is connected with the flue gas circulation inlet.

3. The oil sludge pyrolysis system as claimed in claim 2, wherein the rotary kiln assembly comprises an upper rotary kiln (17) and a lower rotary kiln (18), the upper rotary kiln (17) and the lower rotary kiln (18) are distributed up and down, a discharge end of the upper rotary kiln (17) is communicated with a feed end of the lower rotary kiln (18), the feed port and the flue gas outlet (1) are arranged at the feed end of the upper rotary kiln (17), and the discharge port and the heating port are arranged at the discharge end of the lower rotary kiln (18).

4. The oil sludge pyrolysis system as claimed in claim 3, wherein a diversion bin (19) is arranged between the upper rotary kiln (17) and the lower rotary kiln (18), the discharge end of the upper rotary kiln (17) is connected with the upper part of the diversion bin (19), and the feed end of the lower rotary kiln (18) is connected with the lower part of the diversion bin (19).

5. The oil sludge pyrolysis system as claimed in claim 4, wherein the gas outlet pipe (15) comprises a main pipeline (1501) and a first branch pipeline (1502) and a second branch pipeline (1503) connected with the main pipeline (1501), the flue gas circulation inlet comprises a first flue gas circulation inlet (1301) arranged on the diversion bin (19) and a second flue gas circulation inlet (1302) arranged at the discharge end of the lower rotary kiln (18), the gas outlet end of the first branch pipeline (1502) is communicated with the first flue gas circulation inlet (1301), and the gas outlet end of the second branch pipeline (1503) is communicated with the second flue gas circulation inlet (1302).

6. The sludge pyrolysis system as claimed in claim 5, wherein the first branch pipe (1502) is provided with a first pressure gauge (20), a first temperature gauge (21) and a first air valve (22), and the diversion bin (19) is provided with a second pressure gauge (23) and a second temperature gauge (24).

7. The sludge pyrolysis system as claimed in claim 5, wherein a third pressure gauge (25), a third temperature gauge (26) and a second air valve (27) are arranged on the second branch line (1503), and a fourth pressure gauge (28) and a fourth temperature gauge (29) are arranged at the discharge end of the lower rotary kiln (18).

8. The sludge pyrolysis system of claim 1, wherein the feed device (2) and the discharge device (3) are both screw conveyors.

9. The sludge pyrolysis system of claim 1 wherein the material heating means (4) and the flue gas heating means (11) are both burners.

10. The sludge pyrolysis system of claim 1, wherein the exhaust assembly comprises an induced draft fan (30) connected to the dust separator (7) and a chimney (31) connected to an air outlet of the induced draft fan (30).