CN210367390U

CN210367390U - Sectional type oily sludge pyrolysis treatment device

Info

Publication number: CN210367390U
Application number: CN201921049276.3U
Authority: CN
Inventors: 吴叶强; 马平; 冉宪伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-04-21
Anticipated expiration: 2029-07-05

Abstract

The utility model discloses a sectional type oily sludge pyrolysis treatment device, including: the rotary kiln comprises an upper-section rotary kiln with a first kiln cavity and a lower-section rotary kiln with a second kiln cavity, wherein the first end of the upper-section rotary kiln is rotatably connected with a kiln head cover, the second end of the upper-section rotary kiln is rotatably connected with an upper kiln communicating device and a lower kiln communicating device, the first end of the lower-section rotary kiln is rotatably connected with the upper kiln communicating device and the lower kiln communicating device, the second end of the lower-section rotary kiln is rotatably connected with a kiln tail cover, a kiln head cover is provided with a feed inlet and an oil gas outlet, a kiln tail cover is provided with a discharge outlet and a first burner, the upper-section rotary kiln and the lower-section rotary kiln are provided with driving; the combustion chamber is communicated with the oil gas outlet, and is respectively communicated with the upper kiln communicating vessel, the lower kiln communicating vessel and the kiln tail cover; the crushing device is arranged at the feed inlet. The utility model provides an oiliness mud pyrolysis device can reduce the oil content of waste residue and properly handle the gas that the pyrolysis produced.

Description

Sectional type oily sludge pyrolysis treatment device

Technical Field

The utility model relates to an oily sludge treatment technical field, more specifically say, relate to a sectional type oily sludge pyrolysis treatment device.

Background

The oily sludge (oil sludge) is organic dangerous solid waste which is inevitably generated in the processes of oil exploration, exploitation, refining, processing, transportation, storage, oily wastewater treatment and the like, and is a main source of oil pollution in China. The oil sludge is solid waste formed by mixing crude oil or finished oil into soil or other media, and has the characteristics of complex components, high viscosity, high volatility and the like. China has huge oil sludge yield which is millions of tons each year, and hundreds of millions of tons of oil sludge are stockpiled, and the volatile organic pollutants, heavy metals, harmful microorganisms and the like contained in the oil sludge seriously threaten the surrounding environment and are listed in the national records of dangerous wastes. Oil field enterprises discharge oily sludge, if the treatment and disposal of the oily sludge do not reach the standard, huge pollution discharge cost (1000 yuan/ton) needs to be paid, so that the environment is polluted, and heavy economic burden is brought to the enterprises. The contradiction between environmental pollution caused by oil utilization and increasingly strict environmental requirements is a problem which must be faced by oil enterprises.

At present, the main treatment methods of oil sludge at home and abroad include chemical physical extraction methods (solvent extraction methods, chemical hot washing methods, conditioning mechanical separation methods and the like), biological treatment methods and heat treatment methods (incineration, pyrolysis and the like). Wherein the heat treatment process is capable of converting a chemically stable oil-water-solid emulsion system into pyrolysis oil, solid residue and gas; heavy metals can be enriched in the residues, the residual residues can be directly treated at terminals such as landfill and road building, oil and gas generated by pyrolysis is generally subjected to condensation recovery of oil content and harmless treatment of harmful gas, and the method is one of oil sludge treatment technologies with the most application prospect.

However, oil resources and harmless treatment technologies are developed by pyrolysis of oil sludge so far, and no device or example for large-scale industrial operation exists. Most of the existing pyrolysis devices and methods directly heat oil-containing sludge to a high temperature (above 550 ℃) for pyrolysis by an indirect heating mode, so that most of light oil is subjected to secondary reaction in a high-temperature environment, cracking of heavy oil is insufficient, the oil yield is reduced, the oil content of waste residues is high, harmful gases such as carbide or sulfide generated by pyrolysis are not properly subjected to harmless treatment, and the harmful gases are still discharged into the air to cause air pollution.

Therefore, the device and the method for pyrolyzing the oily sludge are innovated, the defects of high oil content of waste residues and insufficient resource recycling caused by secondary reaction of light oil and insufficient cracking of heavy oil in the conventional oil sludge pyrolysis and the technical bottleneck of improper gas treatment are overcome, and the key problems to be solved urgently in the conventional oil sludge pyrolysis research and technical development are solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sectional type oily sludge pyrolysis treatment device which carries out the sectional pyrolysis treatment of crushing, low temperature and high temperature to the oily sludge in sequence and is accompanied with a stirring device, so that the pyrolysis is sufficient and the oil content of waste residue is low; and the gas generated by pyrolysis is combusted, and the heat generated by combustion is used as the main heat source for the pyrolysis of the oily sludge, so that the full recycling of energy is realized, and the gas is properly treated.

The utility model provides a pair of sectional type oiliness mud pyrolysis treatment device, including: the rotary kiln comprises an upper section rotary kiln with a first kiln cavity with two open ends and a lower section rotary kiln with a second kiln cavity with two open ends, wherein a kiln head cover is rotationally connected to the first end of the upper section rotary kiln in the axial direction, a kiln head cover is rotationally connected to the second end of the upper section rotary kiln, the upper section rotary kiln is communicated with an upper kiln communicating device and a lower kiln communicating device of the lower section rotary kiln, the first end of the lower section rotary kiln is rotationally connected with the upper kiln communicating device and the lower kiln communicating device, the second end of the lower section rotary kiln is rotationally connected with a kiln tail cover, a feed inlet and an oil gas outlet which are communicated with the first kiln cavity are arranged on the kiln head cover, a discharge outlet and a first burner which are communicated with the second kiln cavity are arranged on the kiln tail cover, the upper section rotary kiln and the lower section rotary kiln are provided with a driving device which drives the upper section rotary kiln cavity, the second kiln cavity is obliquely arranged along the direction from the upper kiln communicating vessel to the discharge port; the combustion chamber is communicated with the oil gas outlet and is used for combusting oil gas generated by pyrolysis of oily sludge, the combustion chamber is provided with a second combustor, an air inlet for air to enter and a flue gas outlet for discharging high-temperature flue gas generated by combustion of the oil gas, and the flue gas outlet is respectively communicated with the upper and lower kiln communicating vessels and the kiln tail hood; the stirring device is arranged on the inner wall of the first kiln chamber; and the crushing device is arranged at the feeding port and is used for crushing the oily sludge.

Preferably, the stirring device is a shovelling plate, the shovelling plates are arranged in a plurality of circumferential directions of the first kiln cavity, the first end of each shovelling plate is fixedly connected with the inner wall of the first kiln cavity, and the second end of each shovelling plate is close to the center of the first kiln cavity and is provided with a bending part with an acute bending angle.

Preferably, the outer walls of the kiln cylinders of the upper section of rotary kiln and the lower section of rotary kiln are both provided with support rings protruding along the radial direction of the kiln cylinders; the kiln comprises a kiln cylinder, and is characterized by further comprising supporting wheels for supporting the supporting rings and a base for mounting the supporting wheels, wherein the supporting wheels are at least two and are symmetrically distributed along the central axis of the kiln cylinder, and the rotating central axes of the supporting wheels are parallel to the rotating central axis of the kiln cylinder.

Preferably, two sides of each support ring are provided with thrust blocking wheels, and the rotation central axes of the thrust blocking wheels are perpendicular to the rotation central axis of the kiln barrel.

Preferably, the joint of the kiln head cover and the upper section rotary kiln and the joint of the kiln tail cover and the lower section rotary kiln are both provided with sealing devices for sealing the joints.

Preferably, the sealing device comprises a first sealing ring arranged on the outer wall of the kiln barrel and a second sealing ring arranged on the kiln head cover or the kiln tail cover, and the first sealing ring and the second sealing ring are both provided with at least two sealing rings and are arranged in a crossed manner; the sealing device further comprises a first sealing plate, wherein the first end of the first sealing plate is connected to the kiln head cover or the kiln tail cover, the second end of the first sealing plate is close to the central axis direction of the kiln barrel, the second end of the first sealing plate is connected with a second sealing plate and an insulation plate in a stacked mode, the second sealing plate and the insulation plate are close to the central axis direction of the kiln barrel, and the tail end of the sealing plate is abutted to the outer wall of the kiln barrel.

Preferably, the inner walls of the first kiln chamber and the second kiln chamber are coated with aerogel layers.

Preferably, the kiln wall of the upper rotary kiln is provided with an interlayer structure, the interlayer is filled with aluminosilicate fiber, and the kiln wall of the lower rotary kiln is provided with a refractory layer.

Preferably, the driving device is a variable frequency motor, an output shaft of the variable frequency motor is connected with a driving gear, the outer walls of the upper rotary kiln and the lower rotary kiln are respectively sleeved with a driven gear ring which is fixedly connected, and the driven gear rings are meshed with the driving gear.

Preferably, an emergency pressure relief valve for discharging the high-temperature flue gas is arranged on the combustion chamber.

The utility model provides an among the technical scheme, sectional type oiliness mud pyrolysis treatment device is provided with and is used for carrying out broken breaker, the upper segment rotary kiln that carries out low temperature heat treatment and the hypomere rotary kiln that carries out high temperature heat treatment to oiliness mud, and two rotary kilns all rotate around self the central axis under drive arrangement's drive. The first kiln chamber of upper segment rotary kiln and the second kiln chamber of hypomere rotary kiln are through going up kiln linker intercommunication, and the other end in first kiln chamber is provided with the kiln hood cover of taking feed inlet and oil gas export, and the other end in second kiln chamber is provided with the kiln tail cover of taking discharge gate and first combustor, and breaker is broken with oily mud then pours into first kiln chamber into through the feed inlet. The oily sludge is firstly subjected to particle crushing and then can be subjected to sectional heating treatment of temperature division of a device, light oil in the oily sludge is cracked in a low-temperature heating stage, a stirring device is arranged in a first kiln cavity to stir the oily sludge and promote the pyrolysis of the oily sludge, the light oil and part of heavy oil in the oily sludge can be fully cracked, and the generated first-stage oil gas can be discharged from an oil gas outlet of an upper-stage rotary kiln, so that a secondary cracking reaction is avoided; the oil-containing sludge subjected to low-temperature cracking enters the lower-section rotary kiln through the upper kiln communicating vessel and the lower kiln communicating vessel and then is subjected to high-temperature heating treatment, so that the residual heavy oil is fully cracked, the oil content of the residual waste residue is obviously reduced, and the generated second-stage oil gas has high temperature and can reversely flow to the first kiln cavity in a counter-flow manner, so that heat can be provided for the oil-containing sludge in the first kiln cavity at low temperature, and then the heat is provided through an oil gas outlet. The first-stage oil gas and the second-stage oil gas which escape from the oil gas port enter the combustion chamber to be combusted, the generated high-temperature flue gas has very high heat, and the high-temperature flue gas is respectively guided to the second kiln cavity and the first kiln cavity by utilizing pipelines to provide heat for the pyrolysis of the oily sludge. According to the arrangement, the sectional type oily sludge pyrolysis treatment device provided by the utility model firstly crushes oily sludge into particles and then carries out sectional pyrolysis treatment, and is accompanied with the stirring device, so that the oily sludge can be fully cracked, and compared with the prior art, the oil content of waste residues is reduced; and the gas generated by pyrolysis is combusted, and the high-temperature heat generated by combustion is used as the main heat source for the pyrolysis of the oily sludge, so that the energy is fully recycled, and the gas generated by pyrolysis is properly treated.

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 schematic view of the overall structure of a sectional type oily sludge pyrolysis treatment device in the embodiment of the present invention;

FIG. 2 is a schematic structural view of a stirring device according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a supporting device in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a sealing device according to an embodiment of the present invention.

In fig. 1-4:

the device comprises an upper rotary kiln-1, a lower rotary kiln-2, an upper kiln communicating vessel and a lower kiln communicating vessel-3, a first flue gas inlet-301, a kiln hood-4, a feed inlet-401, an oil gas outlet-402, a kiln tail hood-5, a first combustor-501, a discharge outlet-502, a second flue gas inlet-503, a combustion chamber-6, a flue gas outlet-601, a second combustor-602, a driving device-7, a crushing device-8, a supporting device-9, a supporting ring-901, a riding wheel-902, a thrust blocking wheel-903, a sealing device-10, a first sealing ring-1001, a second sealing ring-1002, a first sealing plate-1003, a second sealing plate-1004, a heat insulation plate-1005 and a shoveling plate-11.

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.

The purpose of the present embodiment is to provide a segmented oil-containing sludge pyrolysis treatment apparatus, which sequentially performs crushing, low-temperature and high-temperature segmented pyrolysis treatment on oil-containing sludge, and is accompanied with a stirring apparatus, so that pyrolysis is sufficient, and the oil content of waste residue is low; and the gas generated by pyrolysis is combusted, and the heat generated by combustion is used as the main heat source for the pyrolysis of the oily sludge, so that the full recycling of energy is realized, and the gas is properly treated.

Hereinafter, embodiments will be described in detail with reference to the accompanying 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. 1-2, the present embodiment provides a sectional type oily sludge pyrolysis treatment apparatus, which includes a crushing apparatus 8 for crushing oily sludge, an upper rotary kiln 1 for performing low-temperature heating treatment on oily sludge crushed to granular form, an upper rotary kiln 1 for performing high-temperature heating treatment on oily sludge after low-temperature treatment, and a combustion chamber 6 for combusting oil gas generated by the pyrolysis of oily sludge. Wherein, upper segment rotary kiln 1 has the open first kiln chamber in both ends, hypomere rotary kiln 2 has the open second kiln chamber in both ends, first kiln chamber and second kiln chamber are the integrative airtight kiln chamber of sectional type through last kiln communicating vessel 3 intercommunication, the one end of kiln communicating vessel 3 is provided with kiln hood 4 about keeping away from of first kiln chamber, be provided with feed inlet 401 and the oil gas export 402 with first kiln chamber intercommunication on the kiln hood 4, and is same, the other end of second kiln chamber is provided with kiln tail cover 5, be provided with discharge gate 502 and first combustor 501 with the second kiln chamber intercommunication on the kiln tail cover 5, first combustor 501 can provide the required heat of oily mud pyrolysis for first kiln chamber and second kiln chamber. And the first kiln chamber is obliquely arranged along the direction from the feeding hole 401 to the upper kiln communicating vessel 3, and the second kiln chamber is obliquely arranged along the direction from the upper kiln communicating vessel 3 to the discharging hole 502, so that the oily sludge can enter the second kiln chamber from the first kiln chamber. The upper rotary kiln 1 and the lower rotary kiln 2 are driven by the driving device 7 to rotate around the central axis of the rotary kiln, the first kiln cavity is internally provided with a stirring device, and oil-containing sludge is impacted and stirred, so that the oil-containing sludge is continuously overturned and rolled in the kiln cavity, can be uniformly heated, and can be more fully pyrolyzed. The oily sludge is firstly crushed into particles by the crushing device 8, the contact area of the oily sludge and the kiln cavity is increased, the oily sludge is also beneficial to heating for carrying out pyrolysis reaction, then the crushed oily sludge enters the first kiln cavity of the upper rotary kiln 1 for low-temperature heating treatment, light oil in the oily sludge is completely cracked, part of heavy oil is cracked, and first-stage oil gas generated by cracking is converged to a feed inlet 401 of the first kiln cavity by a hot gas rising principle and escapes from an oil gas outlet 402; after the oily sludge is subjected to low-temperature heating treatment, the oily sludge falls to the second kiln chamber under the action of gravity for high-temperature heating treatment, heavy oil in the oily sludge is completely cracked, and generated second-stage oil gas enters the first kiln chamber through the upper kiln communicating vessel 3 and the lower kiln communicating vessel 3 according to the hot gas rising principle, provides pyrolysis heat for the oily sludge in the first kiln chamber and then escapes from the oil gas outlet 402. Compared with the prior art, the oily sludge is subjected to sequential separation treatment of crushing, low-temperature cracking and high-temperature cracking, so that heavy oil can be fully cracked, secondary reaction of light oil is avoided, the recovery rate of oil gas is improved, and the oil content of waste residues is reduced.

The combustion chamber 6 is communicated with the oil gas inlet and is provided with an air inlet and a second combustor 602, and oil gas and air generated by pyrolysis of the oily sludge are mixed and combusted. The combustion chamber 6 is respectively communicated with the kiln cavities of the upper rotary kiln 1 and the lower rotary kiln 2 through the high-temperature flue gas outlet 601, so that high-temperature flue gas generated by combustion can be guided into the first kiln cavity and the second kiln cavity, and heat is provided for the pyrolysis reaction of two stages of the oily sludge. With the continuous proceeding of the pyrolysis of the oily sludge, the oil gas in the first stage and the oil gas in the second stage are continuously generated, and the high-temperature flue gas is also continuously generated, so that the heat carried by the high-temperature flue gas can be used as a main heat source for the pyrolysis of the oily sludge, and the first combustor 501 is used as an auxiliary heat source. And the residual hot gas after the high-temperature flue gas supplies heat to the first kiln cavity and the second kiln cavity also escapes into the combustion chamber 6 through the oil gas outlet 402, and then is mixed with newly generated oil gas to be combusted to form new high-temperature flue gas, and the new high-temperature flue gas circularly flows in the way to form a circular high-temperature airflow. Compared with the prior art, the sectional type oily sludge pyrolysis treatment device in the implementation can properly treat gas generated by the pyrolysis of the oily sludge, avoid polluting air and fully utilize resources recovered by the pyrolysis of the oily sludge.

And the kiln head cover 4, the kiln tail cover 5 and the upper and lower kiln communicating vessels 3 are all rotatably connected with the kiln wall. The feed port 401 and the oil gas outlet 402 are arranged on the kiln head cover 4, and the discharge port 502 and the first burner 501 are arranged on the kiln tail cover 5. Thus, the kiln tail cover 5 and the kiln head cover 4 can not only seal the kiln cavity, but also avoid the inconvenience of feeding, discharging and discharging caused by the fact that the feeding port 401, the discharging port 502, the oil gas outlet 402 and the first combustor 501 rotate along with the kiln cavity; and the nozzle of first combustor 501 communicates with second kiln chamber, then can provide the required heat of pyrolysis for the kiln intracavity through the mode of direct heating, compare with using the heater to heat outside the kiln wall among the prior art, one is indirect heating and is direct heating, and direct heating can avoid heat loss to improve heat utilization and make oily sludge direct and heat source contact, does benefit to and carries out abundant thermolysis reaction.

Similarly, the second flue gas inlet 503 for the high-temperature flue gas to enter of the second kiln cavity is arranged on the kiln tail cover 5, the first flue gas inlet 301 for the high-temperature flue gas to enter of the first kiln cavity can be arranged on the upper and lower kiln communicating vessel 3, and the first flue gas inlet 301 and the second flue gas inlet 503 are communicated with the flue gas outlet 601 of the combustion chamber 6 through a pipeline. Due to the arrangement, the pipelines can be prevented from winding along with the rotation of the kiln barrel, and because the first kiln chamber and the second kiln chamber are obliquely arranged, high-temperature flue gas enters the second kiln chamber from the kiln tail cover 5 and can flow through all areas of the second kiln chamber to uniformly supply heat to the oily sludge in the second kiln chamber; high-temperature flue gas enters the first kiln cavity from the upper kiln communicating vessel 3 and the lower kiln communicating vessel and can flow through all areas of the first kiln cavity to uniformly supply heat to the oily sludge in the first kiln cavity; meanwhile, high-temperature flue gas entering the second kiln cavity through the kiln tail cover 5 firstly supplies heat to the second kiln cavity, and then residual hot gas enters the first kiln cavity through the upper kiln communicating device 3 and the lower kiln communicating device 3, and due to the temperature difference between the first kiln cavity and the second kiln cavity, the residual hot gas can also provide heat for the first kiln cavity and finally escapes through the oil gas outlet 402 to enter the combustion chamber 6.

The temperature control of the first kiln chamber and the second kiln chamber can be adjusted by controlling the burning amount or on-off of the first burner 501, controlling the on-off of the first flue gas inlet 301 and the second flue gas inlet 503, and controlling the flow or flow rate of the high-temperature flue gas. The combustion amount of the first combustor 501 can be realized by adjusting how much and how fast the fuel is supplied. If the first burner 501 is a gas burner, the opening and closing of the valve for outputting gas can be adjusted to control the combustion amount. The air quantity and the air speed of the high-temperature flue gas can be controlled by installing a high-temperature circulating fan on the pipeline and then adjusting the rotating speed of the high-temperature circulating fan, or a valve capable of adjusting the opening and closing of the pipeline can be further installed on the airflow pipeline, and the flow speed of the high-temperature flue gas can be adjusted by adjusting the opening and closing conditions or the opening and closing size of the valve. So set up, can wholly increase or reduce the temperature of upper segment rotary kiln 1 and hypomere rotary kiln 2, also can be through controlling respectively with first kiln chamber intercommunication and with the valve on the airflow pipeline of second kiln chamber intercommunication to carry out the temperature regulation and control respectively in order to realize reasonable temperature difference to upper segment rotary kiln 1 and hypomere rotary kiln 2.

And in order to prevent the gas in the combustion chamber 6 from being too much and too high in pressure, an emergency pressure relief valve is arranged on the combustion chamber 6, and the gas in the combustion chamber 6 can be discharged and the explosion caused by too high pressure can be prevented by opening the valve.

Specifically, as shown in fig. 2, the stirring device may be configured as a shoveling plate 11 connected to the inner wall of the first kiln chamber, a first end of the shoveling plate 11 is fixedly connected to the inner wall of the first kiln chamber, and a second end of the shoveling plate 11 is close to the center of the first kiln chamber and is provided with a bending portion having an acute bending angle, where the bending angle refers to an included angle between the bending portion and an extension line of the non-bending portion. And the shovelling plates 11 are distributed along the circumferential direction of the first kiln cavity. So set up, during the upset of first kiln chamber, the flight 11 can collide with oiliness mud ceaselessly, makes the broken more meticulous of oiliness mud, also makes the continuous uplift of oiliness mud spill, make the contact surface increase of oiliness mud and air current to improve pyrolysis drying rate, prevent that partial oiliness mud can not carry out the abundant reaction and just fall to the second kiln intracavity.

As shown in fig. 1, the sectional type oil-containing sludge pyrolysis treatment device not only has the driving device 7 but also is provided with an independent supporting device 9, so that the driving and supporting of the rotary kiln only through the driving device 7 are prevented, and the strong demand for power is prevented. As shown in fig. 3, the supporting device 9 includes a supporting ring 901 disposed on the outer wall of the kiln cylinder and protruding in the radial direction of the kiln cylinder, a supporting roller 902 abutting against the supporting ring 901 and used for supporting the supporting ring 901, and a base 903 used for mounting the supporting roller 902. The riding wheel 902 is rotatably arranged on the base 903, and a plurality of riding wheels 902 can be distributed along the circumferential direction of the kiln cylinder; or the riding wheels 902 are at least symmetrically distributed along the central axis of the kiln cylinder and are positioned at the outer side of the kiln cylinder close to the ground. The central axis of rotation of the idler 902 is parallel to the axis of rotation of the kiln barrel. When the rotary kiln rotates, the riding wheel 902 and the outer wall of the kiln cylinder rotate relatively. So set up, strutting arrangement 9 has both played the supporting role to upper segment rotary kiln 1 and lower segment rotary kiln 2 and has not hindered the rotation of the two again.

Furthermore, the upper rotary kiln 1 and the lower rotary kiln 2 are also provided with limiting devices in the axial direction. As shown in fig. 3, two sides of the support ring 901 are provided with thrust blocking wheels 904, the thrust blocking wheels 904 are vertically mounted on the base 903, the wheel shaft is perpendicular to the central axis of rotation of the kiln barrel, and the wheel surface abuts against the side surface of the support ring 901 and can rotate relatively. With the arrangement, the thrust blocking wheels 904 are clamped on two sides of the support ring 901, so that the rotary kiln can be axially limited and prevented from being axially dislocated; and because the rotary kiln rotates all the time, the rotation friction resistance to the rotary kiln can be reduced by using the limit of the thrust catch wheel 904.

And under the condition that the upper rotary kiln 1 and the lower rotary kiln 2 are both supported and limited, the kiln head cover 4, the kiln tail cover 5 and the upper and lower kiln communicating vessels 3 can be sleeved on the outer wall of the kiln cylinder to realize rotatable connection.

The driving device 7 can be a power device such as a variable frequency motor, a hydraulic cylinder or an oil engine and a transmission mechanism connecting the power device and the rotary kiln. The power device is preferably a variable frequency motor, and is easy to control and adjust the rotating speed. The transmission mechanism can be a driving gear connected to a power output shaft of the motor and a driven gear ring fixedly connected with the rotary kiln. The driven gear ring is sleeved on the outer wall of the kiln cylinder, the gear teeth are distributed along the circumferential direction of the kiln cylinder, and the driven gear ring is meshed with the driving gear. The driven gear ring can be embedded into the outer wall of the kiln cylinder or can be clamped on the outer wall of the kiln cylinder through a connecting structure of a protrusion and a groove.

In order to prevent heat leakage and easily cause accidental injury to workers, as shown in fig. 1, sealing devices 10 for sealing the joints are arranged at the joints of the upper rotary kiln 1 and the kiln head cover 4 and the upper and lower kiln communicating vessels 3 and at the joints of the lower rotary kiln 2 and the kiln tail cover 5 and the upper and lower kiln communicating vessels 3. The sealing device 10 can be a sealing ring or as shown in fig. 4, and comprises a first sealing ring 1001 connected to the outer wall of the kiln cylinder and a second sealing ring 1002 connected to the kiln head cover 4 or the kiln tail cover 5 or the upper and lower kiln communicating vessel 3, wherein at least two first sealing rings 1001 and at least two second sealing rings 1002 are arranged in a staggered manner to form a radial labyrinth seal; the sealing device 10 further comprises a first sealing plate 1003, a heat insulation plate 1005 and a second sealing plate 1004 which are arranged in a stacked mode, the first end of the first sealing plate 1003 is connected to the kiln hood cover 4 or the kiln tail cover 5 or the upper and lower kiln communicating vessel 3, the second end of the first sealing plate is close to the central axis direction of the kiln cylinder but is not in contact with the outer wall of the kiln cylinder, the first end of the second supporting plate is connected with the first supporting plate in a stacked mode, the second end of the second supporting plate points to the central axis direction of the kiln cylinder and abuts against the outer wall of the kiln cylinder, and a; and the insulation board 1005 is sandwiched between the first sealing plate 1003 and the second sealing plate 1004 to perform heat insulation. According to the arrangement, the double-layer flexible seal of the labyrinth structure and the sealing plate is adopted, the seal is tight, the heat can be isolated, and the heat overflow is avoided to the greatest extent; and the sealing function can be still kept when the kiln head and the kiln tail cylinder slightly deflect. The first sealing ring 1001 and the second sealing ring 1002 may be steel plates that are arranged on the outer wall of the kiln barrel and protrude in the radial direction, and the first sealing plate 1003 and the second sealing plate 1004 may be flexible plates, such as rubber plates or asbestos plates; or may be a spring steel sheet. The insulation board can be a carbon silicon nickel composite board.

Furthermore, in order to prevent heat loss or heat transfer to the outer wall of the kiln cylinder to form a dangerous heat source, aerogel layers are coated on the inner walls of the first kiln cavity and the second kiln cavity, and the aerogel is a super heat-insulating material and can achieve a good heat-insulating effect. And the kiln wall of the upper rotary kiln 1 is provided with an interlayer structure, and the interlayer is filled with aluminosilicate fiber for heat insulation. And the kiln wall of the lower rotary kiln 2 is provided with a refractory layer formed by pouring refractory bricks.

The crushing device 8 can be a crushing and screening integrated machine or a combination of a manually operated hammering tool and a screen to crush the oily sludge into granules with the mesh size of the screen.

The upper kiln communicating vessel 3 and the lower kiln communicating vessel 3 can be sealing covers, two openings are arranged on the sealing covers, and one end of one upper section rotary kiln extends into one end of the other lower section rotary kiln. As shown in fig. 1, a material guide plate may be disposed in the sealing cover to make the oily sludge flow into the second kiln chamber more smoothly.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The multiple schemes provided by the invention comprise basic schemes, are independent from each other and are not restricted with each other, but can be combined with each other under the condition of no conflict, so that multiple effects are realized together.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a sectional type oiliness mud pyrolysis treatment device which characterized in that, including:

upper segment rotary kiln (1) with the first kiln chamber of both ends uncovered formula and hypomere rotary kiln (2) that have the second kiln chamber of both ends uncovered formula, the first end along the axial of upper segment rotary kiln (1) rotationally is connected with kiln hood cover (4), the second end rotationally is connected with the intercommunication upper segment rotary kiln (1) with last lower kiln intercommunicator (3) of hypomere rotary kiln (2) kiln chamber, the first end of hypomere rotary kiln (2) with last lower kiln intercommunicator (3) rotationally is connected, the second end rotationally is connected with kiln hood (5), be provided with on kiln hood cover (4) with feed inlet (401) and oil gas export (402) of first kiln chamber intercommunication, be provided with on kiln hood (5) with discharge gate (502) and first combustor (501) of second kiln chamber intercommunication, upper segment (1) and rotary kiln hypomere (2) are provided with and drive the two and adorn along its self central axis pivoted drive dress The first kiln cavity is obliquely arranged along the direction from the feeding hole (401) to the upper and lower kiln communicating vessel (3), and the second kiln cavity is obliquely arranged along the direction from the upper and lower kiln communicating vessel (3) to the discharging hole (502);

the combustion chamber (6) is communicated with the oil gas outlet (402) and is used for combusting oil gas generated by pyrolysis of oily sludge, the combustion chamber (6) is provided with a second combustor (602), an air inlet for air to enter and a flue gas outlet (601) for discharging high-temperature flue gas generated by combustion of the oil gas, and the flue gas outlet (601) is respectively communicated with the upper and lower kiln communicating vessel (3) and the kiln tail cover (5);

the stirring device is arranged on the inner wall of the first kiln chamber;

and the crushing device (8) is arranged at the feed inlet (401) and is used for crushing the oily sludge.

2. The sectional type oily sludge pyrolysis treatment device as claimed in claim 1, wherein the stirring device is provided as a shovelling plate (11), the shovelling plate (11) is provided with a plurality of shovelling plates which are distributed along the circumferential direction of the first kiln cavity, the first end of each shovelling plate (11) is fixedly connected with the inner wall of the first kiln cavity, the second end of each shovelling plate is close to the center of the first kiln cavity, and a bending part with an acute bending angle is arranged at the second end of each shovelling plate.

3. The sectional type oily sludge pyrolysis treatment device as claimed in claim 1, wherein the outer walls of the kiln cylinders of the upper section rotary kiln (1) and the lower section rotary kiln (2) are provided with support rings (901) which protrude along the radial direction of the kiln cylinders; the kiln cylinder supporting device is characterized by further comprising supporting wheels (902) used for supporting the supporting rings (901) and a base (903) used for installing the supporting wheels (902), wherein the supporting wheels (902) are at least two and are symmetrically distributed along the central axis of the kiln cylinder, and the rotating central axis of the supporting wheels (902) is parallel to the rotating central axis of the kiln cylinder.

4. The sectional type oily sludge pyrolysis treatment device as claimed in claim 3, wherein two sides of each support ring (901) are provided with a thrust baffle wheel (904), and the central axis of rotation of the thrust baffle wheel (904) is perpendicular to the central axis of rotation of the kiln barrel.

5. The sectional type oily sludge pyrolysis treatment device as claimed in claim 1, wherein a sealing device (10) for sealing the connection position is arranged at the connection position of the kiln head hood (4) and the upper section rotary kiln (1) and at the connection position of the kiln tail hood (5) and the lower section rotary kiln (2).

6. The sectional type oily sludge pyrolysis treatment device is characterized in that the sealing device (10) comprises a first sealing ring (1001) arranged on the outer wall of a kiln cylinder and a second sealing ring (1002) arranged on the kiln head cover (4) or the kiln tail cover (5), and at least two of the first sealing ring (1001) and the second sealing ring (1002) are arranged in a crossed manner; the sealing device (10) further comprises a first sealing plate (1003) with a first end connected to the kiln head cover (4) or the kiln tail cover (5) and a second end close to the central axis direction of the kiln cylinder, the second end of the first sealing plate (1003) is connected with a second sealing plate (1004) and an insulation plate (1005) in a stacking mode, the tail ends of the second sealing plate (1004) and the insulation plate (1005) are close to the central axis direction of the kiln cylinder, and the tail ends of the sealing plates are abutted to the outer wall of the kiln cylinder.

7. The segmented oily sludge pyrolysis treatment apparatus of claim 1 wherein the inner walls of the first kiln chamber and the second kiln chamber are coated with aerogel layers.

8. The sectional type oily sludge pyrolysis treatment device as claimed in claim 1, wherein the kiln wall of the upper section rotary kiln (1) is provided with a sandwich structure, the sandwich is filled with aluminosilicate fiber, and the kiln wall of the lower section rotary kiln (2) is provided with a refractory layer.

9. The sectional type oily sludge pyrolysis treatment device as claimed in claim 1, wherein the driving device (7) is a variable frequency motor, an output shaft of the variable frequency motor is connected with a driving gear, the outer walls of the upper rotary kiln (1) and the lower rotary kiln (2) are respectively sleeved with a driven gear ring which is fixedly connected along the circumferential direction, and the driven gear ring is meshed with the driving gear.

10. The sectional type oily sludge pyrolysis treatment device as claimed in claim 1, characterized in that an emergency pressure discharge valve for discharging the high-temperature flue gas is arranged on the combustion chamber (6).