CN218372058U

CN218372058U - High-efficiency treatment device integrating pyrolysis and incineration of oily sludge

Info

Publication number: CN218372058U
Application number: CN202222875754.4U
Authority: CN
Inventors: 籍龙杰; 李承志; 丁保国; 曹明月; 贺松; 李岩; 吴明来; 李书鹏
Original assignee: Beijing Construction Engineering Green Energy And Environment Technology Co ltd
Current assignee: Beijing Construction Engineering Green Energy And Environment Technology Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-01-24
Anticipated expiration: 2032-10-28

Abstract

The utility model discloses an oily sludge pyrolysis and burn high efficiency processing apparatus that integrates advances one set of equipment that integrates with the technology coupling with pyrolysis through inside and outside telescopic mode, and the petroleum hydrocarbons of easy pyrolysis desorption takes place pyrolysis desorption process in the inner tube among the oily sludge, and wherein the petroleum hydrocarbons that are difficult to the pyrolysis desorption burn in the urceolus and deal with. This device can realize retrieving the oil resource and with the innocent treatment of tailings from oily sludge, burns organic pollutant in tailings and the waste gas simultaneously and releases the heat and realize high-efficient waste heat utilization's advantage. The whole set of equipment adopts the modularized and skid-mounted design, the driving device is few, the structure is compact, the modularized arrangement is easy, the size is moderate, the occupied area is small, and the whole transportation and installation are convenient.

Description

High-efficiency treatment device integrating pyrolysis and incineration of oily sludge

Technical Field

The utility model belongs to the technical field of sludge treatment, in particular to oily sludge pyrolysis and incineration integrated high efficiency processing apparatus can be applied to oily sludge type hazardous waste minimizing, innoxious and resourceful treatment process.

Background

The oily sludge refers to waste oil-based cuttings and oil sludge falling to the ground of a drilling well generated in the oil drilling and production process. The waste oil-based cuttings in the well drilling are complex multiphase systems formed by oil-containing mud, cuttings and the like discharged in the well drilling, and leachate of the complex multiphase systems has high toxicity. The oil sludge on the ground is a mixture formed by crude oil overflowing, scattering or leaking and permeating into the ground, soil, sand, water and the like in the process of oil drilling and blowout. The oil sludge falling to the ground has low water content, large change of the content ratio of crude oil and sand in the oil sludge, large particle sand stone and impurities, high density, large viscosity and poor fluidity. If the oily sludge is not treated in time, the surrounding soil and underground water can be seriously polluted. Therefore, reduction, harmlessness, and recycling of the oily sludge are necessary and urgent.

At present, the oily sludge treatment technology applied in engineering comprises the technologies of hot water chemical cleaning, tempering, mechanical separation, screening, centrifugation and the like), solvent extraction, pyrolysis, incineration and the like. Meanwhile, according to the regulations of the relevant national documents, crude oil with the oil content of more than 5 percent should be recovered first. Generally speaking, hot water chemical cleaning, conditioning-mechanical separation and solvent extraction can reduce the oil content to about 2%, and pyrolysis and incineration technology can reduce the oil content to below 0.3%. The domestic standard for treating the oily sludge is improved to be that the content of petroleum hydrocarbon is lower than 0.3 percent, the oily sludge treatment by hot water chemical cleaning, tempering-mechanical separation and solvent extraction has difficult to meet the treatment requirement, particularly, the solvent extraction has higher production cost and complex comprehensive utilization process technology, and the heat treatment technology becomes the optimal selection under the technical advantages.

However, when the oily sludge is subjected to single pyrolysis treatment, although part of petroleum hydrocarbons in the oily sludge can be recovered, the overall comprehensive energy consumption is high; when the oily sludge is separately incinerated, although the oily sludge can stably reach the treatment index, the petroleum hydrocarbon in the oily sludge cannot be recovered, so that the resource waste is caused, and the secondary pollution risk is caused. The main reason for the large increase of energy consumption in the pyrolysis process is that the pyrolysis temperature must be greatly increased to meet the standard of less than 0.3% of the total petroleum hydrocarbon treatment standard because the heavy petroleum hydrocarbon components in the oily sludge are difficult to decompose. For light petroleum hydrocarbons and moisture, the volatilization removal process can be completed at a lower pyrolysis temperature. In addition, the existing indirect heating type pyrolysis rotary kiln is in a high-temperature environment for a long time, the barrel body often has the problems of distortion and bending due to the limitation of the structure and the material strength, and the conventional solution is to adopt high-temperature resistant stainless steel and improve the wall thickness of the barrel body; the heat transfer resistance of the cylinder is increased, the heat transfer efficiency is reduced, and the operation cost is increased. In addition, for the separately adopted oily sludge incineration technology, when the organic components in the initial material are too high and contact with open fire, the explosion risk exists, and the phenomenon of coking is easily generated on the cylinder wall at too high temperature.

The pyrolysis and incineration coupling combined technology can overcome the defects that the energy consumption of the existing oily sludge is too high by independently adopting a pyrolysis technology, and the resource recovery cannot be carried out by independently adopting an incineration technology, but if the pyrolysis and the incineration are simply connected in series, although the oil resource recovery and the tailing harmlessness in the oily sludge can also be realized, the pyrolysis and the incineration are two sets of independent equipment, the incineration cannot directly provide heat for the pyrolysis, so that the energy consumption of the two sets of equipment is high, and the multiple operation and maintenance quantity of the two sets of independent equipment parts is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art not enough, provide a oily sludge pyrolysis and burn high-efficient processing apparatus that integrates, with the pyrolysis with burn the coupling and advance one set of equipment that integrates, the petroleum hydrocarbons of easy pyrolysis desorption takes place pyrolysis desorption process in the inner tube among the oily sludge, wherein is difficult to the petroleum hydrocarbons of pyrolysis to burn in the urceolus and deals with. The device can realize the harmlessness of recovering oil resources and tailings from the oily sludge, and has the advantage of realizing the efficient utilization of the tailings and the waste heat of the waste gas.

An efficient treatment device integrating pyrolysis and incineration of oily sludge comprises: inner tube, urceolus, inner tube kiln hood cover, inner tube kiln hood tail, urceolus kiln hood cover, urceolus kiln hood tail, feeding screw conveyer, transfer screw conveyer, the screw conveyer of slagging tap, combustor, sled dress support, sprocket feed and support riding wheel, wherein:

the inner cylinder is supported and fixed in the outer cylinder through a plurality of sliding limiting components, the inner cylinder rotates along with the outer cylinder under the driving of the chain wheel transmission device during working, and the inner wall of the inner cylinder is provided with a plurality of chain anti-coking devices; the inner cylinder kiln hood cover and the inner cylinder kiln tail cover are respectively sealed with the outer wall of the inner cylinder by a fish scale sheet surface seal and a spring compression seal and do not rotate along with the inner cylinder, and the inner cylinder kiln hood cover is provided with a feeding screw conveyor interface, an oil gas discharge interface and a temperature and pressure detection interface; the inner cylinder kiln tail cover is provided with a transfer screw conveyor interface, an inner cylinder kiln tail access hole and a temperature and pressure detection interface; the feeding screw conveyor is fixed on the kiln head cover of the inner cylinder by bolts, and a discharge port of the feeding screw conveyor is provided with a closing-up air locking structure for preventing air from entering the inner cylinder during feeding and ensuring that the inner cylinder is in an oxygen-insulated environment;

the outer barrel is provided with a plurality of supporting riding wheels and a chain wheel transmission device, the supporting riding wheels and the chain wheel transmission device are arranged on the skid-mounted support in an inclined mode at a certain angle, a refractory castable heat insulation layer is arranged on the inner wall of the outer barrel in a pouring mode, and a guide plate is arranged on the inner surface of the refractory castable heat insulation layer; the outer cylinder kiln hood cover and the outer cylinder kiln tail cover are fixed on the skid-mounted support, and are in fish scale sheet surface sealing and spring pressing sealing with the outer wall of the outer cylinder and do not rotate along with the inner cylinder; the outer cylinder kiln hood is provided with a slag tapping screw conveyor interface, an access hole, a waste gas discharge interface, a temperature and pressure detection interface and an inner cylinder installation interface; the tail cover of the outer cylinder kiln is provided with a transfer screw conveyor interface, a burner interface, a combustion-supporting air interface, a temperature and pressure detection interface and an inner cylinder installation interface; the transfer conveying screw is fixed on the inner cylinder kiln tail cover and the outer cylinder kiln tail cover by bolts and conveys the pyrolysis residue of the inner cylinder to the outer cylinder for incineration; a discharge port of the transfer conveying screw machine is provided with a closing-up gas locking structure to prevent gas of the inner cylinder and the outer cylinder from channeling mutually; the combustor is arranged between the inner barrel kiln tail and the outer barrel kiln tail, and the driving motor and the speed reducer provide power for the double-sleeve rotary kiln through the chain wheel transmission device.

Furthermore, a screw is fixed at one end of the feeding screw conveyor, the length of the screw shaft is smaller than that of the screw outer sleeve, and the outer sleeve is provided with a closing-up gas locking structure to ensure that the inner sleeve is in an oxygen-insulated environment.

Oily sludge is subjected to different reactions in the inner and outer cylinders, the inner cylinder is subjected to a pyrolysis reaction in an oxygen-free environment, and pyrolysis residues are fully incinerated in an oxygen-rich environment of the outer cylinder. Oily sludge generated in an oil field is sent into the inner barrel 1 through the feeding screw conveyor 3, the inner barrel 1 is firstly heated indirectly to generate a pyrolysis reaction under the anaerobic environment, oil gas and pyrolysis residues are generated, the oil gas is discharged from the head of the inner barrel kiln and is cooled in the condenser, a condensable part is condensed and recovered, a non-condensable gas part returns to the combustor to be combusted along with natural gas in the outer barrel 2, the pyrolysis residues are discharged from the tail of the inner barrel kiln and enter the transfer conveying screw conveyor 4, the outer barrel is sent into through the transfer screw conveyor 4, carbon in the pyrolysis residues and undecomposed heavy petroleum hydrocarbon are fully burnt in the outer barrel, and residual tailings after burning are discharged from the head of the outer barrel kiln and enter the slag discharge conveying screw conveyor 5 to be cooled and discharged. The burner 6 is arranged between the inner cylinder and the outer cylinder, adopts two types of long flame and short flame, and is sprayed into an interlayer between the inner cylinder and the outer cylinder from the kiln head cover and the kiln tail cover, so that the inner cylinder is heated, and the carbon in the pyrolysis residue is fully combusted.

The working process of the efficient treatment device integrating the pyrolysis and the incineration of the oily sludge is as follows:

the method comprises the following steps: sequentially starting a rotary kiln driving device, an induced draft fan and a combustion fan, igniting a burner, preheating an inner cylinder and an outer cylinder of the rotary kiln, and heating in steps at a heating rate of 50 ℃/h to 600 ℃;

step two: starting a nitrogen making machine to introduce nitrogen into the inner cylinder to replace air, wherein the operation time of nitrogen replacement is 30min;

step three: starting a feeding screw conveyor to convey the oily sludge into the inner cylinder, and simultaneously starting an air exhaust fan to maintain the negative pressure of the inner cylinder between-150 Pa and-50 Pa; cooling the oil gas pumped by the air exhaust fan through a condenser, condensing and recovering the condensable part, and returning the non-condensable part to the outer cylinder for incineration; the incineration waste gas is further treated by a flue gas purification device and then is discharged after reaching the standard;

step four: starting a transfer screw conveyor and a slag discharge screw conveyor, and conveying the pyrolysis residues in the inner barrel into the outer barrel for incineration through the middle screw conveyor; cooling and discharging the incinerated tailings by a slag spiral conveyor; conveying the discharged slag to a temporary tailing storage room for detection and acceptance;

step five: drying, vaporizing desorption, cracking gasification and carbonization of the oily sludge in turn in an oxygen-free environment of the inner cylinder; sequentially carrying out incineration, cooling and tailing discharge in an oxygen-enriched environment of the outer cylinder.

The utility model provides an interior outer sleeve structural design that equipment adopted burns the looks coupling with anaerobic pyrolysis and aerobic, and material after integrating the equipment treatment can be stable up to standard (petroleum hydrocarbon content is less than 0.3%), and single set of equipment productivity promotes by a wide margin (the handling capacity reaches 10 ~ 15 t/h), has effectively reduced secondary pollution and the extravagant problem of energy. Meanwhile, the whole set of equipment adopts modularized and skid-mounted design, the number of driving devices is small, the structure is compact, the modularized arrangement is easy, the size is moderate, the occupied area is small, and the whole transportation and installation are convenient. The equipment provided by the utility model adopts the structure that the outer cylinder supports the inner cylinder at multiple points, so that a thin-wall common stainless steel cylinder can be used to replace a thick-wall high-temperature resistant stainless steel cylinder, the manufacturing and running cost is reduced, and the problem that the conventional cylinder is distorted and bent under the high-temperature environment is solved; the heat transfer performance is greatly improved, the uniformity of material heating and discharging is good, the volume of the equipment is more compact, the manufacturing cost of the equipment is effectively reduced, the energy consumption is low, the production efficiency is high, the operation is safe and reliable, and the process adjustment operation is flexible and reliable.

In addition, the combustor arranges and makes whole set of device kiln tail temperature highest between interior outer tube kiln tail, the interior inner tube temperature all reduces from the kiln tail to the kiln head gradually, oily sludge gets into the inner tube and rises from the kiln head to kiln tail motion process temperature gradually, take place the drying in proper order among the oily sludge heating process, low temperature pyrolysis, medium temperature pyrolysis, high temperature pyrolysis and carbonization, be favorable to in the oily sludge different oils from low temperature to high temperature desorption pyrolysis gradually, oil because of the pyrolysis gasification of high temperature in the oily sludge has effectively been solved, lead to the problem that the oil rate of recovery reduces. Pyrolysis residues enter from the tail of the outer cylinder kiln, and under the oxygen-rich state, combustible substances in the pyrolysis residues can be fully combusted, so that partial heat can be provided for inner cylinder pyrolysis, and residual carbon and residual total petroleum hydrocarbon in the inner cylinder pyrolysis can be further treated; the waste gas and the incineration residue in the outer cylinder flow to the kiln head, are gradually cooled and cooled with the low-temperature oily sludge in the inner cylinder through indirect heat exchange, and finally the incineration residue and the waste gas are discharged from the kiln head of the outer cylinder. The reverse flow of the oily sludge in the inner cylinder, the waste gas in the outer cylinder and the incineration residues utilizes the waste heat in the incineration residues and the waste gas to the maximum extent, realizes the full utilization of heat and plays a role in reducing consumption in a synergic manner.

Drawings

FIG. 1 is a schematic sectional view of an efficient treatment device integrating pyrolysis and incineration of oily sludge, wherein hollow arrows represent oil gas moving routes, and solid arrows represent material moving routes;

FIG. 2 isbase:Sub>A schematic end view of the cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic end view of the cross-sectional view B-B of FIG. 1;

FIG. 4 is a schematic end view of the cross-sectional view C-C of FIG. 1;

FIG. 5 is a schematic end view of the cross-sectional view of FIG. 1 taken at D-D;

description of reference numerals:

the device comprises an inner cylinder-1, an inner cylinder kiln hood cover-11, an inner cylinder kiln hood tail cover-12, an inner cylinder kiln hood oil gas discharge interface-111, an inner cylinder kiln hood temperature and pressure detection interface-112, an inner cylinder kiln tail access hole-121, an inner cylinder kiln tail temperature and pressure detection interface-122 and an inner cylinder kiln tail pyrolysis residue discharge opening-123;

the kiln comprises an outer cylinder-2, an outer cylinder kiln hood cover-21, an outer cylinder kiln tail cover-22, an outer cylinder kiln head waste gas discharge port-211, an outer cylinder kiln head incineration residue discharge port-212, an outer cylinder kiln head temperature and pressure detection interface-213, an outer cylinder kiln head access hole-214, an outer cylinder kiln tail burner interface-221, an outer cylinder kiln tail combustion air interface-222, an outer cylinder kiln tail temperature and pressure detection interface-223, an outer cylinder kiln tail access hole-224 and an outer cylinder kiln tail transfer screw conveyor interface-225;

a feeding screw conveyor-3, a transfer screw conveyor-4, a slag discharge screw conveyor-5, a burner-6, a skid-mounted support-7, a chain wheel transmission device-8 and a supporting riding wheel-9.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the following detailed description is given to the integrated high efficiency treatment apparatus for pyrolysis and incineration of oily sludge provided by the present invention with reference to the accompanying examples. The following examples are intended to illustrate the invention and are not intended to limit the scope of the invention.

Example 1

As shown in figure 1, the utility model provides a pyrolysis of oily sludge and high-efficient processing apparatus who burns integration, including inner tube 1, urceolus 2, inner tube kiln hood cover 11, inner tube kiln hood 12, urceolus kiln hood cover 21, urceolus kiln hood 22, feeding screw conveyor 3, transfer screw conveyor 4, slag tapping screw conveyor 5, combustor 6, sled dress support 7, sprocket gear 8 and support riding wheel 9 etc..

The inner cylinder 1 is supported and fixed in the outer cylinder 2 through a plurality of sliding limiting components, the inner cylinder 1 rotates together with the outer cylinder 2 under the drive of the chain wheel transmission device when in work, and the inner wall of the inner cylinder 1 is provided with a plurality of chain anti-coking devices; the inner cylinder kiln hood cover 11 and the inner cylinder kiln tail cover 12 are respectively sealed with the outer wall of the inner cylinder by a fish scale surface seal and a spring compression seal and do not rotate along with the inner cylinder. The inner cylinder kiln hood cover 11 is provided with a feeding screw conveyor interface, an oil gas discharge interface and a temperature and pressure detection interface. The inner cylinder kiln tail cover is provided with a transfer screw conveyor interface, an inner cylinder kiln tail access hole and a temperature and pressure detection interface. Feeding screw conveyer 3 is fixed in on inner tube kiln hood cover 11 with the bolt, and feeding screw conveyer 3 discharge gate is provided with binding off airlock for prevent that air from getting into the inner tube and ensure that the inner tube is in oxygen-insulated environment when feeding.

The outer cylinder 2 is provided with a plurality of supporting riding wheels and a chain wheel transmission device 8, and is arranged on the skid-mounted support 7 in a certain inclined angle. The inner wall of the outer barrel 2 is provided with a refractory castable heat insulation layer in a pouring mode, and the inner surface of the refractory castable heat insulation layer is provided with a guide plate. The outer cylinder kiln hood cover 21 and the outer cylinder kiln tail cover 22 are fixed on the skid-mounted support 7, and are sealed with the outer wall of the outer cylinder 2 by a fish scale surface seal and a spring pressing seal and do not rotate along with the inner cylinder. The outer cylinder kiln hood cover 21 is provided with a slag tapping screw conveyor interface, an access hole, a waste gas discharge interface, a temperature and pressure detection interface and an inner cylinder installation interface. The outer cylinder kiln tail cover 22 is provided with a transfer screw conveyor interface, a burner interface, a combustion-supporting air interface, a temperature and pressure detection interface and an inner cylinder installation interface. The transfer conveying screw machine 4 is fixed on the inner cylinder kiln tail cover and the outer cylinder kiln tail cover by bolts and conveys the pyrolysis residues of the inner cylinder to the outer cylinder for incineration; the discharge port of the transfer conveying screw machine 4 is provided with a closing-up gas locking structure to prevent the gas of the inner cylinder and the gas of the outer cylinder from channeling each other. The combustor 6 is arranged between the inner cylinder kiln tail and the outer cylinder kiln tail, and the driving motor and the speed reducer provide power for the double-sleeve rotary kiln through the chain wheel transmission device. A screw is fixed at one end of the feeding screw conveyor 3, the length of the screw shaft is smaller than that of the screw outer sleeve, and the outer sleeve is provided with a closing-up air locking structure to ensure that the inner sleeve is in an oxygen-insulated environment.

When the set of integrated equipment is in formal operation, the chain wheel transmission device, the draught fan and the combustion fan are sequentially started, the burner is started to ignite, the preheating of the inner cylinder and the outer cylinder of the rotary kiln is started, the temperature is increased by adopting steps, the temperature increase rate is kept at 50 ℃/h, and the temperature is increased to 600 ℃ by adopting steps. And then, starting the nitrogen making machine to introduce nitrogen into the inner cylinder to replace air, wherein the operation time of nitrogen replacement is 30min.

The method is characterized in that the initial oil content is tested to be 20-25% and the initial water content is tested to be 20-30% aiming at the oily sludge generated in a certain oil field of Qinghai, the oily sludge in an oil sludge temporary storage pool is taken out and then sent to a weighing system, the weighing system is provided with a mass sensor and a motor rotating speed sensor, the set value of the feeding amount can be adjusted according to production requirements in a local control cabinet and a central control room, and the rotating speed of a belt weigher can be automatically adjusted according to the set value by a program to realize the stable control of the feeding amount.

The oily sludge is conveyed to an oily sludge feeding bin through a feeding belt and conveyed to the inner cylinder through a feeding screw conveyor. Starting a feeding screw conveyor to feed the oily sludge into the inner cylinder, and simultaneously starting an air exhaust fan to maintain the negative pressure of the inner cylinder between-150 Pa and-50 Pa. The oil gas that air extractor took out is cooled through the condenser, and the part that can congeal condenses and retrieves, and the part that can not congeal returns the urceolus and burns, burns the waste gas and discharges up to standard after flue gas purification device further handles.

The oily sludge is subjected to anaerobic pyrolysis reaction in the inner cylinder, and the oily sludge is dried → vaporized and desorbed → cracked and gasified → carbonized in turn under the anaerobic environment of the inner cylinder. The total petroleum hydrocarbon content of the material passing through the inner cylinder is reduced to about 2 percent, the discharging temperature is only 200-250 ℃, and the discharging temperature is greatly reduced compared with 400-450 ℃ when the pyrolysis technology is singly used to reach the standard of 0.3 percent, so that the comprehensive energy consumption in the pyrolysis process is favorably reduced. The residue from the inner cylinder is transported into the outer cylinder for incineration through the transfer screw conveyor, the pyrolysis residue enters from the tail of the outer cylinder kiln, and under the condition of oxygen enrichment, combustible substances in the pyrolysis residue can be fully combusted, so that partial heat can be provided for inner cylinder pyrolysis, and residual carbon and residual total petroleum hydrocarbon in the pyrolysis residue can be further treated; the waste gas and the incineration residue in the outer cylinder flow to the kiln head, are gradually cooled and cooled with the low-temperature oily sludge in the inner cylinder through indirect heat exchange, and finally the incineration residue and the waste gas are discharged from the kiln head of the outer cylinder. The burned tailings are cooled and discharged through a slag discharge screw conveyor, and the slag is discharged and conveyed to a tailing temporary storage room for detection and acceptance. After the equipment stably operates, the total petroleum hydrocarbon content in the final discharge is detected to be lower than 0.3 percent, the treatment capacity is stabilized at about 12t/h, and the treatment efficiency and the treatment capacity of the equipment are obviously superior to those of the existing equipment.

The pyrolysis and incineration coupling combined technology can overcome the defects that the energy consumption of the existing oily sludge is too high by independently adopting a pyrolysis technology, and the resource recovery cannot be carried out by independently adopting an incineration technology, but if the pyrolysis and the incineration are simply connected in series, although the oil resource recovery and the tailing harmlessness in the oily sludge can also be realized, the pyrolysis and the incineration are two sets of independent equipment, the incineration cannot directly provide heat for the pyrolysis, so that the energy consumption of the two sets of equipment is high, and the multiple operation and maintenance quantity of the two sets of independent equipment parts is large. The utility model discloses in advancing one set of equipment that integrates with the coupling of burning pyrolysis, in this set of equipment, the petroleum hydrocarbon of easy pyrolysis desorption takes place the pyrolysis desorption process in the inner tube among the oily sludge, and the petroleum hydrocarbon that wherein is difficult to the pyrolysis burns in the urceolus and deals with, consequently this device can realize retrieving oil resource and tailings innoxious from oily sludge, realizes the advantage of high-efficient utilization tailings of utilization and waste gas waste heat simultaneously.

The present invention is not limited to the above-described examples, and various changes can be made without departing from the spirit of the present invention within the knowledge range of those skilled in the art.

Claims

1. The utility model provides an oily sludge pyrolysis and burn high-efficient processing apparatus who integrates, includes: inner tube, urceolus, inner tube kiln hood cover, inner tube kiln hood tail, urceolus kiln hood cover, urceolus kiln hood tail, feeding screw conveyer, transfer screw conveyer, the screw conveyer of slagging tap, combustor, sled dress support, sprocket feed and support riding wheel, its characterized in that:

the outer barrel is provided with a plurality of supporting riding wheels and a chain wheel transmission device, the supporting riding wheels and the chain wheel transmission device are arranged on the skid-mounted support in an inclined mode at a certain angle, a refractory castable heat insulation layer is arranged on the inner wall of the outer barrel in a pouring mode, and a guide plate is arranged on the inner surface of the refractory castable heat insulation layer; the outer cylinder kiln hood cover and the outer cylinder kiln tail cover are fixed on the skid-mounted support, and are in fish scale sheet surface sealing and spring pressing sealing with the outer wall of the outer cylinder and do not rotate along with the inner cylinder; the outer cylinder kiln hood is provided with a slag tapping screw conveyor interface, an access hole, a waste gas discharge interface, a temperature and pressure detection interface and an inner cylinder installation interface; the tail cover of the outer cylinder kiln is provided with a transfer screw conveyor interface, a burner interface, a combustion-supporting air interface, a temperature and pressure detection interface and an inner cylinder installation interface; the transferring conveying screw is fixed on the inner cylinder kiln tail cover and the outer cylinder kiln tail cover by bolts and conveys the pyrolysis residue of the inner cylinder to the outer cylinder for incineration; a closing-up gas locking structure is arranged at a discharge port of the transfer conveyor screw machine to prevent gas of the inner cylinder and the outer cylinder from channeling each other; the combustor is arranged between the inner barrel kiln tail and the outer barrel kiln tail, and the driving motor and the speed reducer provide power for the double-sleeve rotary kiln through the chain wheel transmission device.

2. The oily sludge pyrolysis and incineration integrated high-efficiency treatment device according to claim 1, characterized in that: and a screw is fixed at one end of the feeding screw conveyor, the length of the screw shaft is less than that of the outer screw sleeve, and the outer screw sleeve is provided with a closing-up air-locking structure to ensure that the inner screw sleeve is in an oxygen-insulated environment.