Oil sludge pyrolysis treatment oil and gas dust removal device and oil sludge pyrolysis treatment system

Abstract

This invention relates to an oil and gas dust removal device and system for pyrolysis treatment of oily sludge. The device includes a housing, a condensing baffle, a gas distribution chamber, and a sludge discharge valve. The housing is divided into an upper and lower housing by the condensing baffle; the condensing baffle has an air inlet and an air outlet; the gas distribution chamber is located in the lower housing and connected to the air inlet; multiple through holes are provided on the outer wall of the gas distribution chamber; multiple sets of cooling pipe assemblies are installed in the lower housing, passing through the condensing baffle and connecting to the upper housing; the sludge discharge valve is located at the bottom of the lower housing; in operation, condensate is injected into the upper housing, and dust removal liquid is injected into the lower housing. A cavity is left between the surface of the dust removal liquid in the lower housing and the condensing baffle, and the gas distribution chamber is immersed in the dust removal liquid. This device employs a coupled dust removal technology combining gas-liquid mixing dust removal and condensate droplet dust removal, resulting in more thorough dust removal and improved oil and gas dust removal efficiency.

Description

Technical Field

[0001] This invention relates to an oil and gas dust removal device and a pyrolysis treatment system for oily sludge. Background Technology

[0002] Oily sludge, as a hazardous waste, requires harmless and environmentally friendly treatment. Pyrolysis is currently a widely used technology for treating oily sludge. During pyrolysis, the oily sludge reacts in a high-temperature pyrolysis furnace, converting the liquid oil in the solid phase into oil gas, achieving solid-liquid separation and harmless treatment. The oil gas is then condensed and liquefied for recovery, realizing resource utilization. The oil gas produced after pyrolysis contains not only oil and water but also a large amount of dust. If the dust is not removed promptly and effectively, it will reduce the condenser's condensation effect and efficiency, and in severe cases, it will clog the condenser and oil gas pipelines, causing production shutdowns. Therefore, it is necessary to install an oil gas dust removal device to treat the dust in the oil gas.

[0003] Existing oil and gas dust removal devices mainly include cyclone dust collectors and spray dust collectors. Cyclone dust collectors are more effective at removing dust particles with larger diameters and dust contained in dry gas, while spray dust collectors are more effective at removing flue gas with large dust particle sizes and high dust concentrations. Summary of the Invention

[0004] The inventors of this invention discovered that the dust contained in the oil and gas discharged during the pyrolysis of oily sludge mainly consists of fly ash and particulate matter. Furthermore, the oil and gas discharged during the pyrolysis process is moist, making the removal effect of cyclone dust collectors unsatisfactory; the dust mixes with the condensed vapor to form sludge lumps, requiring manual cleaning and shutdown. Spray dust collectors offer better removal, but require a large amount of circulating water during the spraying process. However, spray dust collectors require oil, water, and sludge separation of the sprayed water before obtaining circulating water, resulting in a complex process, high investment, and high operating costs. Therefore, this invention proposes an oil and gas dust removal device and system for treating oily sludge pyrolysis to solve or partially solve the above problems. The technical solution proposed by this invention is as follows:

[0005] As a first aspect of the present invention, the present invention provides an oil and gas dust removal device for pyrolysis treatment of oily sludge, including a housing, a condensation baffle, a gas distribution chamber and a sludge discharge valve, wherein the housing is divided into an upper housing and a lower housing by the condensation baffle;

[0006] The condenser baffle is provided with an air inlet and an air outlet;

[0007] The air distribution chamber is located inside the lower housing and is connected to the air inlet; the outer wall of the air distribution chamber is provided with multiple through holes;

[0008] The lower chamber is equipped with multiple sets of cooling pipe assemblies, which pass through the condensation baffle and are connected to the upper chamber.

[0009] The sludge discharge valve is located at the bottom of the lower housing;

[0010] In use, the upper chamber is filled with condensate, the lower chamber is filled with dust removal liquid, a cavity is left between the surface of the dust removal liquid in the lower chamber and the condensation baffle, and the gas distribution chamber is immersed in the dust removal liquid.

[0011] In one or more alternative embodiments, at least a portion of the condensation baffle has a trapezoidal corrugated structure;

[0012] The lower box is provided with a plurality of first partitions, which are spaced apart.

[0013] There is a first preset gap between the first partition and the upper end face of the trapezoidal corrugated structure;

[0014] When in use, the lower end of the first baffle is below the surface of the dust removal liquid.

[0015] In one or more optional embodiments, the lower housing is provided with a second partition, which divides the lower housing into a first housing and a second housing.

[0016] The gas distribution chamber is located inside the first box;

[0017] When in use, the liquid level of the dust removal fluid in the first chamber is higher than that in the second chamber.

[0018] In one or more optional embodiments, the lower housing is further provided with at least one third partition;

[0019] The third partition and the first partition have a second preset gap;

[0020] When in use, the height of the third baffle is lower than the liquid level of the dust removal liquid.

[0021] In one or more alternative embodiments, the cooling pipe assembly includes multiple sets of U-shaped cooling pipes spaced apart;

[0022] There is a third preset gap between two adjacent U-shaped cooling pipes.

[0023] In one or more alternative embodiments, the opening spacing of the U-shaped cooling pipes in the first housing is greater than the maximum cross-sectional width of the air distribution chamber.

[0024] In one or more optional embodiments, the lower housing is further provided with a fourth partition;

[0025] There is a fourth preset gap between the fourth partition and the box body.

[0026] In one or more optional embodiments, the oil sludge pyrolysis treatment oil and gas dust removal device further includes an overflow port disposed in the lower box, the overflow port being disposed between the fourth partition and the inner wall of the box.

[0027] In one or more optional embodiments, a mud collection trough is provided at the bottom of the lower housing, and the mud discharge valve is located at the bottom of the mud collection trough.

[0028] In one or more alternative embodiments, the sludge collection trough has a V-shaped structure.

[0029] In one or more alternative embodiments, the cross-sectional area of ​​the air distribution chamber is 5 to 10 times the cross-sectional area of ​​the air inlet.

[0030] As a second aspect of the present invention, the present invention provides a pyrolysis treatment system for oily sludge, including the above-mentioned oily sludge pyrolysis treatment oil and gas dust removal device.

[0031] Based on the above technical solution, the beneficial effects of the present invention compared with the prior art are as follows:

[0032] The oil and gas dust removal device for pyrolysis treatment of sludge provided in this invention has a gas distribution chamber that separates the pyrolyzed oil and gas into small bubbles. A cooling pipe assembly cools the oil and gas. The oil and gas fully collide, contact, and condense with the dust removal liquid in the lower chamber. During the ascent of the oil and gas, the dust removal liquid captures and adsorbs the dust contained in the oil and gas, achieving primary dust removal. The oil and gas floating on the surface of the dust removal liquid comes into contact with the condensing baffle. Under the action of the condensing liquid in the upper chamber, the water vapor in the oil and gas forms small condensed droplets on the lower surface of the condensing baffle. When these droplets reach a certain mass, they fall from the condensing baffle into the dust removal liquid in the lower chamber. During condensation and descent, the droplets capture and adsorb the dust in the oil and gas, separating it from the oil and gas, achieving secondary dust removal. The dust in the oil and gas, captured and adsorbed by the liquid, settles to the bottom of the lower chamber due to gravity and is discharged through the sludge discharge valve, completing the oil and gas dust removal process. The oil and gas dust removal process employs a coupled dust removal technology that combines gas-liquid mixing dust removal with condensate droplet dust removal, resulting in more thorough dust removal, cleaner oil and gas, and improved dust removal efficiency. The dust removal process is continuous, eliminating the need for manual cleaning of the mixed sludge, which improves the efficiency of oily sludge removal. Furthermore, water vapor in the oil and gas condenses and flows out through the overflow port, eliminating the need for oil, water, and sludge separation. The process is simple, requires low investment, and has low operating costs.

[0033] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the oil and gas dust removal device for pyrolysis treatment of sludge provided in an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the structure of the oil and gas dust removal device for pyrolysis treatment of sludge provided in an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of the cooling water pipe assembly structure provided in an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of the gas distribution chamber structure provided in an embodiment of the present invention.

[0040] In the diagram: 1. Condensation baffle; 2. Upper housing; 3. Lower housing; 4. Air inlet; 5. Air outlet; 6. Gas distribution chamber; 601. Gas distribution plate; 602. Gas distribution ring; 7. Cooling pipe assembly; 701. Vertical branch pipe; 702. Horizontal branch pipe; 703. Horizontal manifold; 8. Sludge collection trough; 9. Overflow port; 10. Sludge discharge valve; 11. Baffle #1; 12. Second baffle; 13. Baffle #2; 14. Baffle #3; 15. Third baffle; 16. Baffle #4; 17. Fourth baffle; A. Gas phase channel; B. Liquid phase channel. Detailed Implementation

[0041] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0042] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0043] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] Reference Figure 1-4 As shown, this embodiment of the invention provides an oil and gas dust removal device for pyrolysis treatment of oily sludge, including a housing, a condensation baffle 1, a gas distribution chamber 6, and a sludge discharge valve 10. The housing is divided by the condensation baffle 1 to form an upper housing 2 and a lower housing 3.

[0046] The condenser baffle 1 is provided with an air inlet 4 and an air outlet 5;

[0047] The air distribution chamber 6 is located inside the lower housing 3 and is connected to the air inlet 4; the outer wall of the air distribution chamber 6 is provided with multiple through holes;

[0048] The lower housing 3 is provided with multiple sets of cooling pipe assemblies 7, and the cooling pipe assemblies 7 pass through the condensation baffle 1 and are connected to the upper housing 2.

[0049] The mud discharge valve 10 is located at the bottom of the lower housing 3;

[0050] In use, condensate is injected into the upper chamber 2, and dust removal liquid is injected into the lower chamber 3. A cavity is left between the liquid level of the dust removal liquid in the lower chamber 3 and the condensation baffle 1, and the gas distribution chamber 6 is immersed in the dust removal liquid.

[0051] The oil and gas dust removal device for pyrolysis treatment of sludge provided in this embodiment of the invention has a condenser baffle 1 that separates the housing into an upper housing 2 and a lower housing 3. The upper housing 2 is suitable for injecting condensate, and the lower housing 3 is suitable for injecting dust removal liquid. The level of the dust removal liquid injected into the lower housing 3 is higher than the upper surface of the gas distribution chamber 6 and lower than the condenser baffle 1. Thus, in use, the lower housing 3 serves as a dust removal chamber and a medium flow chamber, achieving dust removal of oil and gas within the lower housing 3, and allowing oil and gas to flow in the cavity formed between the surface of the dust removal liquid and the condenser baffle 1 within the lower housing 3. The cooling pipe assembly 7 connects the upper housing 2 and the lower housing 3, thereby introducing the condensate in the upper housing 2 into the lower housing 3 to cool the high-temperature oil and gas after gas separation in the gas distribution chamber 6. Since the dust in the oil and gas is very fine and adheres to water vapor, the water vapor in the oil and gas condenses into small droplets upon cooling, and the dust falls with the droplets, thus achieving separation of dust and water vapor. In this embodiment, both the condensate and the dust removal fluid are water.

[0052] The oil and gas dust removal device for pyrolysis treatment of sludge provided in this embodiment of the invention introduces high-temperature oil and gas into the dust removal liquid in the lower chamber 3 through the air inlet 4 connected to the air inlet pipe that passes through the condenser baffle 1. The high-temperature oil and gas is split into small bubbles through the gas distribution chamber 6, so that the oil and gas are fully mixed, contacted, cooled and washed with the dust removal liquid in the lower chamber 3. The dust removal liquid captures and adsorbs the dust contained in the oil and gas, realizing the first-stage dust removal of the oil and gas. The oil and gas flows in the cavity between the surface of the dust removal liquid in the lower chamber 3 and the condenser baffle 1, and comes into contact with the condenser baffle 1 located below the upper chamber 2. Under the action of the condenser in the upper chamber 2, a temperature difference is generated between the condenser baffle 1 and the oil and gas. The oil and gas form small droplets of condensation on the lower surface of the condenser baffle 1. When they reach a certain mass, they fall from the condenser baffle 1 into the dust removal liquid. During the condensation and falling process, the small droplets capture and adsorb the dust in the oil and gas, separating the dust from the oil and gas, realizing the second-stage dust removal of the oil and gas.

[0053] The oil and gas dust removal device for pyrolysis treatment of sludge provided in this embodiment of the invention allows non-condensable gases in the oil and gas to flow out through the outlet 5, dust in the oil and gas to settle to the bottom of the lower box 3 and be discharged by the sludge discharge valve 10, and water vapor in the oil and gas to be cooled by the cooling pipe assembly 7 and then condensed and flowed into the dust removal liquid.

[0054] In this embodiment of the invention, the upper housing 2 can be connected to external cooling equipment such as a cooling tower to cool the condensate in the upper housing 2 and then recycle it, thus saving energy. The specific structure and implementation of the cooling equipment described in this embodiment of the invention can be found in the detailed descriptions in the prior art by those skilled in the art; therefore, this embodiment of the invention does not impose specific limitations on these aspects.

[0055] In one specific embodiment, the gas distribution chamber 6 is located 20mm to 500mm below the surface of the dust removal liquid. By positioning the gas distribution chamber 6 below the surface of the dust removal liquid, oil and gas containing dust must pass through the dust removal liquid to overflow, thereby capturing and adsorbing the dust contained in the oil and gas.

[0056] In one specific embodiment, the gas distribution chamber 6 may include a gas distribution plate 601 and a gas distribution ring 602. The gas distribution plate 601 is connected to the air inlet 4, and the gas distribution ring 602 is disposed below the gas distribution plate 601 and connected to the gas distribution plate 601. Both the gas distribution plate 601 and the gas distribution ring 602 are provided with multiple through-holes. The gas distribution holes can split the oil and gas into small bubbles, increasing the contact area between the oil and gas and the dust removal liquid.

[0057] In this embodiment of the invention, reference is made to Figure 4 As shown, the air distribution plate 601 can be a circular plate, and the air distribution ring 602 can be a circular cylindrical structure. The diameter of the air distribution ring 602 is equal to the diameter of the air distribution plate.

[0058] In one specific embodiment, the diameter of the air distribution holes provided on the air distribution plate 601 and the air distribution ring 602 is 2mm to 10mm.

[0059] In this embodiment of the invention, reference is made to Figure 1 and Figure 2 As shown, at least a portion of the condenser baffle 1 has a trapezoidal corrugated structure;

[0060] The lower housing 3 is provided with a plurality of first partitions, which are spaced apart.

[0061] There is a first preset gap between the first partition and the upper end face of the trapezoidal corrugated structure;

[0062] When in use, the lower end of the first partition is below the level of the dust removal liquid.

[0063] In this embodiment of the invention, a first preset gap is formed between the first baffle and the upper surface of the trapezoidal corrugated structure to form a gas phase channel A. The multiple first baffles and the condensation baffle 1 arranged within the lower housing 3 cause the gas phase channel A to be S-shaped. During the flow of oil and gas, the flow direction and velocity continuously change, increasing the residence time of the oil and gas within the lower housing 3. This increases the contact opportunity between the oil and gas and the condensate droplets, improving the effect of condensate droplets in capturing and adsorbing dust.

[0064] In this embodiment of the invention, the condensation baffle 1 is configured as a trapezoidal corrugated structure, which can increase the contact area for oil and gas condensation heat exchange, and at the same time increase the structural strength of the box.

[0065] In this embodiment of the invention, the intake pipe connected to the air inlet 4 is installed on the upper end face of the trapezoidal corrugated structure, and the upper end of the cooling pipe assembly 7 is connected to the lower end face of the condenser baffle 1. Both the upper and lower end faces of the trapezoidal corrugated structure are horizontal planes, facilitating the installation of the intake pipe and the cooling pipe assembly 7. As a specific embodiment, the width of the horizontal plane is 100mm to 1000mm.

[0066] As a specific embodiment, refer to Figure 1 and Figure 2 As shown, the plurality of first baffles may include baffle 1#11, baffle 2#13, baffle 3#14, and baffle 4#16. Baffle 1#11, baffle 2#13, baffle 3#14, and baffle 4#16 are disposed below the upper surface of the trapezoidal corrugated structure and have a first preset gap with the upper surface of the trapezoidal corrugated structure. Baffle 1#11, baffle 2#13, baffle 3#14, and baffle 4#16 form an S-shaped gas phase channel with the condensation baffle 1 for oil and gas to pass through. In this embodiment of the invention, the number of the first baffles is not limited to four; those skilled in the art can set the number of first baffles according to actual usage.

[0067] In this embodiment of the invention, the lower box 3 is provided with a second partition 12, and the lower box 3 is divided into a first box and a second box by the second partition 12;

[0068] The gas distribution chamber 6 is disposed inside the first box;

[0069] In operation, the liquid level of the dust collector in the first chamber is higher than that in the second chamber. The second baffle 12, together with the first baffle and the cooling pipe assembly, forms an S-shaped liquid phase channel. The liquid level difference between the dust collectors in the first and second chambers ensures a relatively stable "micro-positive pressure" operating environment within the pyrolysis furnace connected to the air inlet 4, which is crucial for the safety of the pyrolysis furnace operation and the material processing efficiency.

[0070] In this embodiment of the invention, the lower housing 3 is further provided with at least one third partition 15;

[0071] The third partition 15 has a second preset gap with the first partition;

[0072] When in use, the height of the third partition 15 is lower than the liquid level of the dust removal liquid.

[0073] In this embodiment of the invention, the lengths of the multiple first partitions are not equal, and there is a second preset gap between the third partition 15 and at least one first partition, so that the liquid phase channel B in the lower box 3 is S-shaped, reducing the disturbance caused by the horizontal flow of liquid in the lower box 3 and thus preventing the sludge from settling.

[0074] In this embodiment of the invention, the cooling pipe assembly 7 includes multiple sets of U-shaped cooling pipes arranged at intervals;

[0075] There is a third preset gap between two adjacent U-shaped cooling pipes.

[0076] The U-shaped cooling pipe serves as a flow channel for condensate; there is a third preset gap between two adjacent U-shaped cooling pipes, allowing oil and gas and dust removal liquid to flow in the gas phase channel A and liquid phase channel B formed between the two adjacent U-shaped cooling pipes.

[0077] In this embodiment of the invention, the center distance between two adjacent U-shaped cooling pipes is 35mm to 200mm, and the diameter of the U-shaped cooling pipe is 25mm to 100mm.

[0078] In this embodiment of the invention, the opening spacing of the U-shaped cooling pipes in the first housing is greater than the maximum cross-sectional width of the air distribution chamber 6. (Refer to...) Figure 2 As shown, the gas distribution chamber 6 is located inside the first chamber of the lower chamber 3. The size of the U-shaped cooling pipe in the first chamber is larger than the size of the gas distribution chamber 6, which allows the gas distribution chamber 6 to be located in the U-shaped cooling pipe, thereby fully cooling the high-temperature oil and gas coming out of the gas distribution chamber 6.

[0079] As a specific embodiment, refer to Figure 2 As shown, the U-shaped cooling pipe may include two vertical branch pipes 701, one horizontal branch pipe 702, and two horizontal manifolds 703. The vertical branch pipes 701 and the horizontal branch pipes 702 are arranged in a vertical direction. The vertical branch pipes 701 are connected to the horizontal manifolds 703, and the two horizontal manifolds 703 are connected through the horizontal branch pipes 702.

[0080] In this embodiment of the invention, the lower housing 3 is further provided with a fourth partition 17;

[0081] The fourth partition 17 has a fourth preset gap with the box body.

[0082] In this embodiment of the invention, the oil and gas dust removal device for pyrolysis treatment of sludge further includes an overflow port 9 disposed in the lower chamber 3, which is located between the fourth partition 17 and the inner wall of the chamber. The overflow port 9 serves to maintain the level of the dust removal liquid in the lower chamber 3. After the high-temperature pyrolysis oil and gas are introduced into the device, due to the large amount of water vapor contained in the oil and gas, the water vapor condenses, causing the level of the dust removal liquid to rise. When the level of the dust removal liquid is higher than the height of the fourth partition 17, the excess dust removal liquid can flow out through the overflow port 9, thereby ensuring that the level of the dust removal liquid always maintains a cavity with the condensation partition 1. The dust removal liquid overflowing from the overflow port 9 can be introduced into the lower chamber 3 through the inlet (not shown in the figure) for continued recycling as dust removal liquid.

[0083] In this embodiment of the invention, a sludge collection trough 8 is provided at the bottom of the lower housing 3, and a sludge discharge valve 10 is disposed at the bottom of the sludge collection trough 8. Dust captured and adsorbed by the dust removal liquid settles into the sludge collection trough 8 by gravity and is discharged through the sludge discharge valve 10. The specific structure and implementation of the sludge discharge valve 10 described in this embodiment of the invention can be found in the detailed descriptions in the prior art by those skilled in the art; however, no specific limitations are imposed in this embodiment of the invention.

[0084] In this embodiment of the invention, the sludge collection tank 8 adopts a V-shaped structure. The V-shaped structure can collect the sludge deposited at the bottom of the lower box 3, making it convenient for the sludge discharge valve 10 to discharge the sludge.

[0085] As a specific embodiment, there are multiple sludge collection tanks 8, which are arranged sequentially at the bottom of the lower box 3. Each sludge collection tank 8 is separated from the others by a first partition and a second partition 12 to form multiple V-shaped sedimentation spaces, thereby reducing the disturbance caused by the horizontal flow of liquid in the lower box 3 and preventing the sludge from settling.

[0086] As a specific embodiment, the included angle of the mud collection trough 8 is 30 degrees to 90 degrees.

[0087] In this embodiment of the invention, the cross-sectional area of ​​the gas distribution chamber 6 is 5 to 10 times that of the cross-sectional area of ​​the air inlet 4. After the oil and gas enter the gas distribution chamber 6 through the air inlet 4, the gas distribution chamber 6 breaks the oil and gas into small bubbles. The cross-sectional area of ​​the gas distribution chamber 6 is 5 to 10 times that of the air inlet 4, which can break the oil and gas into smaller bubbles, increase the contact area between the oil and gas and the dust removal liquid, and thus improve the dust removal effect.

[0088] Based on the same inventive concept, embodiments of the present invention also provide a pyrolysis treatment system for oily sludge, including the above-mentioned oily sludge pyrolysis treatment oil and gas dust removal device.

[0089] In this embodiment of the invention, the high-temperature pyrolysis equipment is connected to the above-mentioned oily sludge pyrolysis treatment oil and gas dust removal device, which performs oil and gas dust removal on the high-temperature hot gas coming out of the high-temperature pyrolysis equipment.

[0090] The specific implementation of the pyrolysis treatment system for oily sludge provided in this embodiment of the invention can be referred to in the detailed description of the oil and gas dust removal device for pyrolysis treatment of oily sludge in the above embodiment. Where the description is repeated, it will not be repeated.

[0091] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. The terms "upper," "lower," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0092] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. This invention is not limited to any single aspect, nor to any single embodiment, nor to any combination and / or substitution of these aspects and / or embodiments. Each aspect and / or embodiment of this invention can be used alone, or in combination with one or more other aspects and / or other embodiments.

[0093] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A device for treating oily sludge through pyrolysis and removing oil and gas dust, characterized in that, It includes a housing, a condenser baffle (1), a gas distribution chamber (6), and a mud discharge valve (10). The housing is divided by the condenser baffle (1) to form an upper housing (2) and a lower housing (3). The condenser baffle (1) is provided with an air inlet (4) and an air outlet (5); The air distribution chamber (6) is located inside the lower housing (3) and is connected to the air inlet (4); the outer wall of the air distribution chamber (6) is provided with multiple through holes; The lower housing (3) is provided with multiple sets of cooling pipe assemblies (7), and the cooling pipe assemblies (7) pass through the condensation baffle (1) and are connected to the upper housing (2); The sludge discharge valve (10) is located at the bottom of the lower housing (3); In use, condensate is injected into the upper chamber (2), dust removal liquid is injected into the lower chamber (3), a cavity is left between the surface of the dust removal liquid in the lower chamber (3) and the condensation baffle (1), and the gas distribution chamber (6) is immersed in the dust removal liquid, and the lower end of the multiple cooling pipe assemblies (7) is lower than the surface of the dust removal liquid. The condensation baffle (1) has at least a trapezoidal corrugated structure in a portion of its area; The lower box (3) is provided with multiple first partitions of different lengths, and the multiple first partitions are spaced apart; There is a first preset gap between the first partition and the upper end face of the trapezoidal corrugated structure; In use, the lower end of the first baffle is below the liquid level of the dust removal liquid; an S-shaped gas phase channel is formed between the multiple first baffles and the condensation baffle; The lower box (3) is provided with a second partition (12), and the lower box (3) is divided into a first box and a second box by the second partition (12); The gas distribution chamber (6) is located inside the first box; When in use, the liquid level of the dust removal liquid in the first chamber is higher than that in the second chamber; The lower housing (3) is also provided with at least one third partition (15); The third partition (15) is in the same vertical plane as the first partition, and there is a second preset gap between them; In use, the height of the third partition (15) is lower than the liquid level of the dust removal liquid; The lower box (3) is also provided with a fourth partition (17); There is a fourth preset gap between the fourth partition (17) and the condensation partition; The lower chamber (3) is provided with an overflow port (9), which is located between the fourth partition (17) and the inner wall of the chamber. The dust removal liquid flows in an S-shape within the lower chamber.

2. The oil and gas dust removal device for pyrolysis treatment of oily sludge according to claim 1, characterized in that, The cooling pipe assembly (7) includes multiple sets of U-shaped cooling pipes spaced apart; There is a third preset gap between two adjacent U-shaped cooling pipes.

3. The oil and gas dust removal device for pyrolysis treatment of oily sludge according to claim 2, characterized in that, The opening spacing of the U-shaped cooling pipes in the first housing is greater than the maximum cross-sectional width of the air distribution chamber (6).

4. The oil and gas dust removal device for pyrolysis treatment of oily sludge according to claim 1, characterized in that, The bottom of the lower box (3) is provided with a mud collection trough (8), and the mud discharge valve (10) is located at the bottom of the mud collection trough (8).

5. The oil and gas dust removal device for pyrolysis treatment of oily sludge according to claim 4, characterized in that, The mud collection trough (8) adopts a V-shaped structure.

6. The oil and gas dust removal device for pyrolysis treatment of oily sludge according to any one of claims 1-5, characterized in that, The cross-sectional area of ​​the air distribution chamber (6) is 5 to 10 times that of the cross-sectional area of ​​the air inlet (4).

7. A pyrolysis treatment system for oily sludge, characterized in that, The device includes the oil and gas dust removal apparatus for pyrolysis treatment of oily sludge as described in any one of claims 1-6.

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