A three-stage heating non-stick pan oily sludge pyrolysis device

Abstract

A three-stage heating non-stick pan oily sludge pyrolysis device. It is mainly used to solve the problem that the post-treatment emissions of existing treatment devices do not meet the standards when treating oilfield waste. It is characterized in that: a spiral material propulsion sheet (5) is fixed to the outside of the rotating shaft (3), an annular protective wall (10) is fixed to the outside of the cylinder (11), a heating chamber (8) is formed between the cylinder (11) and the protective wall (10), and three smoke inlets are opened at the bottom of the protective wall (10), and a smoke exhaust port (7) is opened at the top. The three-stage heating non-stick pan oily sludge pyrolysis device is also suitable for the treatment of wastes such as oilfield waste liquid, oil-rich oil shale, various waste engine oils, and domestic garbage, and the device will not coke and will not produce polluting emissions after treatment.

Description

Technical Field

[0001] The invention relates to the field of solid organic matter (including solid-liquid mixture) treatment, in particular to a three-stage heating non-stick pan oil-containing sludge pyrolysis device. Background Art

[0002] The waste oil sludge produced by the petroleum, petrochemical and other industries is composed of water, emulsified oil, adsorbed oil, solid mud and sand, etc. It has complex components and is difficult to treat. At present, the treatment methods for this waste oil sludge include water washing method and incineration method, but the above two methods do not meet environmental protection requirements. The water washing method has the following problems: 1. The oil content of the solid mud after treatment is greater than 1%, which cannot be discharged or recycled; 2. New pollutants will be generated after treatment, one of which is the severely emulsified emulsified oil. Due to Na + The content of active agent is high. When it is returned to the joint station and contacts the electric dehydration device, it will cause the device to short-circuit instantly, seriously affecting the normal and safe operation; one is the wastewater containing excessive oil and suspended solids. When it is returned to the sewage treatment station, it is difficult to achieve rapid separation of oil and water; three, continuous operation cannot be achieved; four, strict requirements on the impurities of the front-end feed. When the block is too large or there is a woven fabric, it will seriously affect the operation of the subsequent process equipment. The incineration method has the following problems: 1. The premise of incineration requires two aspects. One is that the liquid that can be burned needs to be atomized to less than 20μm, and the other is that the water content, especially liquid water, cannot exceed 0.5%. Since the water content in various types of waste oil sludge exceeds the standard, the liquid with serious emulsification cannot be atomized to less than 20μm, so it is difficult to burn normally; 2. The device used in the incineration method is seriously coked; 3. If the organic matter contains chlorine components (such as various woven fabrics, plastic cloth, etc.), incomplete combustion is easy to produce harmful components such as dioxins.

[0003] For oil shale and oil sand, the main components are rock and solid oil in the rock pores. At present, the treatment method at home and abroad is the conventional pyrolysis process, the main problem of which is serious coking, which affects safe operation.

[0004] For waste engine oil, waste lubricating oil, waste cooling oil, waste cooking oil, waste plastic, waste rubber, waste textiles, domestic waste, etc., the current treatment methods mainly include incineration and conventional pyrolysis, which also have the problems analyzed above.

[0005] In summary, when the current treatment devices treat the above-mentioned oilfield waste liquid, oil-rich oil shale, various waste engine oils, domestic garbage and other wastes, the emissions after treatment do not meet the standards, and there is no method or device that can be used to treat the above-mentioned various wastes at the same time, and it is impossible to guarantee that the emissions after treatment meet the standards. Summary of the invention

[0006] In order to overcome the deficiency of existing treatment devices that the post-treatment emissions do not meet the standards when treating the above-mentioned wastes, the present invention provides a three-stage heating non-stick pan oil-containing sludge pyrolysis device. The three-stage heating non-stick pan oil-containing sludge pyrolysis device is suitable for the treatment of oilfield waste liquid, oil-rich oil shale, various waste engine oils, domestic garbage and other wastes, and the device will not stick to the pan and will not generate polluting emissions after treatment.

[0007] The technical solution of the present invention is: a three-stage heating non-stick pan oily sludge pyrolysis device, including a cylinder, a rotating shaft is provided at the center of the cylinder, a spiral material propulsion piece is fixed to the outside of the rotating shaft, an annular protective wall is fixed to the outside of the cylinder, a heating chamber is formed between the cylinder and the protective wall, three smoke inlets are opened at the bottom of the protective wall, and a smoke exhaust port is opened at the top.

[0008] The cylinder body is provided with a plurality of injection devices outside, the injection devices are provided with injection pipes, the injection pipes are connected to the delivery pipes, the delivery pipes are connected to a plurality of delivery branches, and nozzles are fixed at the ends of the delivery branches.

[0009] The outer wall of the cylinder is respectively connected with a rotating motor and a micro-vibration device.

[0010] A blade-shaped body perpendicular to the cylinder wall is fixed on the top of the material pushing piece. The blade-shaped body is arranged along the axial direction of the cylinder, and there is a gap between the front end of the blade-shaped body and the inner wall of the cylinder.

[0011] One end of the material pushing piece is connected to the feeding device, and a feeding air locking device is provided between the feeding device and the cylinder body. An air vent is fixed on the upper part of the end of the cylinder body opposite to the feeding device, and a discharge pipe is fixed on the lower end.

[0012] The upper end of the discharge pipe is provided with a discharge air locking device, one side of the discharge pipe is connected to a large particle release pipe, the lower end of the discharge pipe is connected to a discharge screening device, and the bottom of the discharge screening device is provided with a solid powder outlet.

[0013] The present invention has the following beneficial effects: due to the adoption of the above scheme, the three-stage heating non-stick pan oily sludge pyrolysis device is not easy to stick to the pan, will not produce unsafe factors such as local heating bulging and cracking, will not produce polluting effluents, does not contain secondary pollutants, can operate safely and economically, and saves operating costs. At the same time, the effluents processed by the device are harmless and resource-based, which can be legally discharged and utilized as resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the structure of the present invention with an injection device;

[0016] Figure 3 is along Figure 2 Sectional view of AA.

[0017] In the figure, 1-material pushing motor, 2-bearing seat, 3-rotating shaft, 4-venting port, 5-material pushing plate, 6-sealing device, 7-smoke exhaust port, 8-heating chamber, 9-pyrolysis chamber, 10-protective wall, 11-cylinder, 12-feeding air locking device, 13-feeding device, 14-first flue gas inlet, 15-discharging pipe, 16-discharging air locking device, 17-discharging screening device, 18-solid powder outlet, 19-large particle release pipe, 20-injection device, 21-injection pipe, 22-conveying pipe, 23-conveying branch pipe, 24-micro-vibration device, 25-rotating motor, 26-transmission, 27-gear, 28-nozzle, 29-blade, 30-second flue gas inlet, 31-third flue gas inlet, I-first pyrolysis section, II-second pyrolysis section, III-third pyrolysis section. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings:

[0019] Depend on Figures 1 to 3 As shown, a three-stage heating non-stick pan oily sludge pyrolysis device includes a barrel 11, a rotating shaft 3 is provided at the center of the barrel 11, both ends of the rotating shaft 3 are supported by a bearing seat 2, and a material pushing motor 1 is connected to the end of the rotating shaft 3. A spiral material pushing piece 5 is fixed to the outside of the rotating shaft 3, one end of the material pushing piece 5 is connected to a feeding device 13, and a feeding air locking device 12 is provided between the feeding device 13 and the barrel 11, so that the material can be fed into the barrel 11 through the feeding device 13. A venting port 4 is fixed to the upper part of the end of the barrel 11 opposite to the feeding device 13, and a discharge pipe 15 is fixed to the lower end. A discharge air locking device 16 is provided at the upper end of the discharge pipe 15, a large particle release pipe 19 is connected to one side of the discharge pipe 15, and a discharge screening device 17 is connected to the lower end of the discharge pipe 15. The large particle release pipe 19 is fixed to one side of the upper part of the discharge screening device 17, and a solid powder outlet 18 is opened at the bottom of the discharge screening device 17.

[0020] An annular protective wall 10 is fixed to the outside of the cylinder 11, and a sealing device 6 is provided between the two ends of the protective wall 10 and the cylinder 11, so that a heating chamber 8 is formed between the cylinder 11 and the protective wall 10, and the interior of the cylinder 11 opposite to the heating chamber 8 is a pyrolysis chamber 9. For the convenience of description, the pyrolysis chamber 9 is divided into three sections along the axial direction, from left to right, the first pyrolysis section I, the second pyrolysis section II, and the third pyrolysis section III. The bottom of the protective wall 10 is provided with three flue gas inlets, namely the first flue gas inlet 14, the second flue gas inlet 30, and the third flue gas inlet 31, which correspond to the positions of the first pyrolysis section I, the second pyrolysis section II, and the third pyrolysis section III, respectively. A smoke exhaust port 7 is provided at the top of the right end of the protective wall 10.

[0021] The cylinder 11 is provided with a plurality of injection devices 20 on the outside. The injection devices 20 are fixed on the rotating shaft 3 through a rotating joint, so that when the rotating shaft 3 rotates, the injection devices 20 can remain stationary. The injection device 20 is provided with an injection pipe 21, the bottom of the injection pipe 21 is connected to a delivery pipe 22, the delivery pipe 22 is located inside the rotating shaft 3, and the delivery pipe 22 is connected to a plurality of delivery branches 23, which extend out of the rotating shaft 3, and a nozzle 28 is fixed at the end thereof. There are four injection devices 20, two of which are fixed at both ends of the cylinder 11, and each injection device 20 is connected to a separate delivery pipe 22. Each injection device 20 can inject different liquids according to needs, such as catalytic thermal storage liquid, light liquid, fracture agent, destabilizing agent, etc. When the rotating shaft 3 rotates, the delivery pipe 22 and the delivery branch pipe 23 can rotate together, so that the liquid is sprayed all around the outside along the circumferential direction through the nozzle 28.

[0022] The outer wall of the cylinder 11 is connected to a rotating motor 25 and a micro-vibration device 24, respectively. The output end of the rotating motor 25 is connected to a transmission 26, and the transmission 26 drives the cylinder 11 to rotate through a gear 27 fixed to the outside of the cylinder 11. When the micro-vibration device 24 is started through the gear, the cylinder 11 can generate micro-vibration as a whole, thereby reducing the phenomenon of the cylinder wall sticking to the pot.

[0023] A blade 29 perpendicular to the cylinder wall is fixed on the top of the material pushing piece 5. The blade 29 is arranged along the axial direction of the cylinder 11. The front end of the blade 29 is a sharp blade, and there is a gap between the sharp blade and the inner wall of the cylinder 11. Multiple blades 29 can be arranged along the circumferential direction and evenly distributed along the circumferential direction. When the device is working, the rotation direction of the cylinder 11 is opposite to the rotation direction of the rotating shaft 3, so that the sharp edge of the blade 29 can scrape off the material stuck on the cylinder wall. As the cylinder rotates, the spiral material in the cylinder to be pyrolyzed can be lifted by the blade 29 for full pyrolysis.

[0024] When the three-stage heating non-stick pan oily sludge pyrolysis device is working, the material to be pyrolyzed is fed into the pyrolysis chamber 9 through the feeding device 13, and the rotation of the rotating shaft 3 drives the material pushing plate 5 to rotate, thereby conveying the material forward. High-temperature flue gas is input into the heating chamber 8 through three flue gas inlets, and the flue gas temperatures input from the three flue gas inlets are different, so that the temperature in the first pyrolysis section I is ≤350°C, the temperature in the second pyrolysis section II is 350~550°C, and the temperature in the third pyrolysis section III is 550~750°C. Due to the partition of the cylinder 11, only heat is transmitted between the heating chamber 8 and the pyrolysis chamber 9, and the media are not mixed with each other. At the same time, according to the different media to be pyrolyzed, different liquids are injected into the pyrolysis chamber by different injection devices 20, such as liquids with catalytic heat storage (release) function, light liquids for blocking the accumulation of impurities on the heated surface of the pyrolysis side, chain breakers for cracking the molecular chains of macromolecular organic matter, destabilizing agents for promoting the rapid pyrolysis of macromolecular chain organic matter, etc. As the rotating shaft 3 rotates, these liquids are sprayed to the outside in all directions through the nozzle 28 to promote the pyrolysis of the medium. During the pyrolysis of the medium, the blade 29 can lift the material, combined with the vibration effect of the micro-vibration device 24, thereby greatly reducing the occurrence of coking, carbonization, scaling and other sticking to the pot.

[0025] The scope of application of the three-stage heating non-stick pan oily sludge pyrolysis device: 1. It is suitable for harmless, resource-based, and reduced treatment of drilling waste liquid involved in oil fields or petrochemical fields, dirty oil sludge and aged oil after dredging in tanks and pools in various stations in oil fields or petrochemicals, dirty oil sludge generated in underground operation wells, dirty oil sludge generated by pipeline leakage, and dirty oil sludge generated by oil tanks on land and ships at sea. 2. It is suitable for front-end treatment in the refining process of oil-rich oil shale and oil sands, and can harmlessly treat the solids therein, remove the generated water and non-condensable gases and recycle them, and the remaining high-purity oil has no harmful effect on the refining process. 3. Harmless and resource-based treatment of various waste engine oils, waste lubricating oils, waste cooling oils, and kitchen waste oils. 4. Harmless and resource-based treatment of various solid organic matter: such as waste plastics, waste rubber, and waste woven fabrics. 5. Harmless and resource-based treatment of domestic garbage containing organic matter.

[0026] Compared with water washing equipment, this three-stage heating non-stick pan oily sludge pyrolysis device does not produce polluting effluents and does not contain secondary pollutants that affect the normal and safe operation of other process flows. Compared with the incineration method, it does not produce harmful gases such as dioxins, can operate safely and economically, save investment, save operating costs, and have resource output. Compared with the existing conventional pyrolysis furnace, it will not coke, will not produce unsafe factors such as local heating bulging and cracking, has a short processing time and low operating costs. It can also operate continuously, safely, economically, closed and environmentally friendly. Since the feeding requirements are not harsh, it can save investment in front-end sorting equipment when building a site. Since it can operate continuously, it saves investment in pools and tanks for material storage. After treatment, the equipment has four types of harmless and resource-based outputs: the first is powdered solids containing less than 0.2% organic matter, which can be legally discharged and recycled; the second is light liquid, mainly oil, which can be recycled; the third is heavy liquid, mainly water, with oil content less than 10ppm, suspended solids less than 10ppm, and mineralization less than 100mg / l, Ca 2+ +Mg 2+ <2mg / l, which can be discharged legally and utilized as resources; the fourth type is non-condensable combustible gas, which can be used as fuel.

Claims

1. A three-stage heating non-stick pan oily sludge pyrolysis device, comprising a cylinder (11), a rotating shaft (3) is provided at the center of the cylinder (11), and is characterized in that: A spiral material propulsion sheet (5) is fixed to the outside of the rotating shaft (3); the rotation direction of the cylinder (11) is opposite to that of the rotating shaft (3); an annular protective wall (10) is fixed to the outside of the cylinder (11); a heating chamber (8) is formed between the cylinder (11) and the protective wall (10); three smoke inlets are provided at the bottom of the protective wall (10); and a smoke exhaust port (7) is provided at the top; a plurality of injection devices (20) are provided on the outside of the cylinder (11); an injection pipe (21) is provided on the injection device (20); the injection pipe (21) is connected to a conveying pipe (22); a plurality of conveying branch pipes (23) are connected to the conveying pipe (22); a nozzle (28) is fixed to the end of the conveying branch pipe (23); a rotating motor (25) and a micro-seismic device (24) are respectively connected to the outer wall of the cylinder (11); A blade-shaped body (29) perpendicular to the cylinder wall is fixed on the top of the material pushing piece (5), the blade-shaped body (29) is arranged along the axial direction of the cylinder (11), and a gap is formed between the front end of the blade-shaped body (29) and the inner wall of the cylinder (11); one end of the material pushing piece (5) is connected to the feeding device (13), and a feeding air locking device (12) is provided between the feeding device (13) and the cylinder (11); an air release port (4) is fixed on the upper part of the end of the cylinder (11) opposite to the feeding device (13), and a discharge pipe (15) is fixed on the lower end; a discharge air locking device (16) is provided on the upper end of the discharge pipe (15), a large particle release pipe (19) is connected to one side of the discharge pipe (15), a discharge screening device (17) is connected to the lower end of the discharge pipe (15), and a solid powder outlet (18) is provided at the bottom of the discharge screening device (17).

Images