Oil-containing sludge pyrolysis treatment device

Abstract

This utility model belongs to the field of sludge treatment technology, specifically a pyrolysis treatment device for oily sludge. It includes a reactor capable of holding a certain amount of oily sludge for pyrolysis treatment. A feeding assembly is provided on one side of the reactor to allow external injection of the oily sludge to be treated. A stirring assembly is provided on the reactor to fully stir the oily sludge at a required speed during the pyrolysis process. This utility model facilitates the use of a partition cylinder that separates the internal space of the reactor and a second spiral blade that rotates with a second shaft. This allows the oily sludge to be simultaneously subjected to the separation and stirring of the support rod, the second spiral blade, and the stirring assembly, as well as the conveying by the second spiral blade. This allows the oily sludge to enter the partition cylinder located at the center of the reactor and, after leaving the partition cylinder, to mix again with the oily sludge outside the partition cylinder. This ensures that the oily sludge is fully and evenly heated in a short time, allowing harmful organic components and oil to be fully converted into oil vapor and released.

Description

Technical Field

[0001] This utility model belongs to the field of sludge treatment technology, specifically relating to a pyrolysis treatment device for oily sludge. Background Technology

[0002] Oily sludge is a complex, chemically stable, brownish-black, viscous solid waste, primarily originating from crude oil extraction, oilfield gathering and transportation, and refinery wastewater treatment. Direct discharge of this sludge occupies vast amounts of land, and its toxic substances pollute water, soil, and air, worsening the ecological environment. Anaerobic pyrolysis, however, can harmlessly treat oily sludge and effectively recover the crude oil contained within it.

[0003] Chinese patent document CN221940296U discloses an oily sludge pyrolysis treatment device. By setting a sludge stirring mechanism in a rotating inner cylinder and arranging adjacent sludge stirring mechanisms in an alternating manner and setting the iron cables in opposite directions, the oily sludge is continuously divided and the stirring direction is changed during the movement, thereby improving the tumbling effect.

[0004] However, in the existing technology, although the oily sludge in the tumbling process can be divided and stirred by the sludge stirring mechanism, when a large amount of oily sludge is pyrolyzed in a single treatment device, the flow, tumbling and heating of the oily sludge located in the central area of ​​the inner cylinder will still be hindered by other oily sludge. Moreover, the weight of the oily sludge itself affects the speed at which the treatment device can increase its tumbling speed. All of these factors will make it difficult for the harmful substances inside the oily sludge to fully volatilize in a short period of time. Therefore, an oily sludge pyrolysis treatment device is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a device for the pyrolysis treatment of oily sludge.

[0006] The technical solution adopted in this utility model is as follows:

[0007] An oily sludge pyrolysis treatment device includes a reactor capable of holding a certain amount of oily sludge for pyrolysis treatment. A feeding component is provided on one side of the reactor to inject the oily sludge to be treated from the outside into the reactor. A stirring component is provided on the reactor to fully stir the oily sludge at the required speed during the pyrolysis treatment process.

[0008] The reaction vessel includes a vessel body, and a vessel cover is fixedly connected to the top of the vessel body;

[0009] The stirring assembly includes a lifting component that can convey and divide the oily sludge in the central area of ​​the reactor, a stirring component that can continuously stir the oily sludge, a driving component that can adjust the stirring speed of the sludge in this device, and a loading component that can transmit the power from the driving component to the lifting component and the stirring component.

[0010] The loading component includes a second rotating shaft disposed inside the vessel body;

[0011] The lifting component includes a support rod fixedly connected to the bottom of the vessel lid, a separator cylinder fixedly connected to the bottom of the support rod, and a second spiral blade fixedly connected to the outer side of the second rotating shaft.

[0012] Further equipment: The loading component also includes a frame fixedly connected above the vessel lid. Both the vessel lid and the frame are fixedly mounted with bearing seats, and a second rotating shaft is movably connected between the bearing seats.

[0013] This configuration allows the drive unit to be installed above the reactor, enabling it to operate continuously without affecting material transport.

[0014] Further equipment: The mixing component includes a mixing frame fixedly connected to the lower end of the second rotating shaft, and a mixing rod is fixedly connected to the mixing frame.

[0015] This design allows the sludge located between the vessel body and the partition cylinder to be continuously stirred, ensuring the overall heating effect of the sludge and preventing it from clumping or solidifying.

[0016] Further equipment: The drive unit includes a reducer fixedly installed in the frame, a second motor is provided above the reducer, a first coupling is provided between the output end of the second motor and the input end of the reducer, and a second coupling is provided between the output end of the reducer and the upper end of the second rotating shaft.

[0017] This configuration allows for stable rotation of the second shaft, enabling it to drive the lifting and mixing components to operate stably.

[0018] Further equipment: The vessel body is a hollow structure.

[0019] This setup allows the entire vessel to be heated while still being able to hold the sludge for pyrolysis.

[0020] Further equipment: The bearing seat is rotatably connected to the second rotating shaft.

[0021] This configuration limits the range of motion of the second shaft, allowing it to rotate relative to the bearing only under the action of the drive component.

[0022] Further equipment: The height of the second spiral blade is greater than that of the separator cylinder.

[0023] With this configuration, the second spiral blade can transport the sludge from below the separator cylinder into its interior after it rotates, and then from its interior to the top.

[0024] The beneficial effects of this utility model are as follows: the separation cylinder that can separate the internal space of the vessel body and the second spiral blade that can rotate with the second rotating shaft make it easy for the oily sludge to be simultaneously divided and stirred by the support rod, the second spiral blade and the stirring element, as well as transported by the second spiral blade. This allows the oily sludge to enter the separation cylinder set in the center of the vessel body, and after leaving the separation cylinder, it is mixed with the oily sludge outside the separation cylinder again, so that the oily sludge can be fully and evenly heated in a short time, and the harmful organic components and oil can be fully converted into oil gas and released. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the pyrolysis treatment device for oily sludge described in this utility model;

[0027] Figure 2 This is a schematic diagram of the main structure of the pyrolysis treatment device for oily sludge described in this utility model;

[0028] Figure 3 yes Figure 1 A proportionally enlarged structural diagram of some components;

[0029] Figure 4 This is a schematic diagram of some components of the stirring assembly of the oily sludge pyrolysis treatment device described in this utility model;

[0030] Figure 5 This is a cross-sectional view of the vessel body and vessel cover of the oily sludge pyrolysis treatment device described in this utility model;

[0031] Figure 6 yes Figure 4 A schematic diagram of the structure of some components from another perspective.

[0032] The annotations in the attached figures are explained as follows:

[0033] 1. Reactor; 101. Reactor body; 102. Reactor cover; 103. Feed pipe; 104. First shut-off valve; 105. Discharge pipe; 106. Second shut-off valve; 107. First heat medium pipe; 108. Second heat medium pipe; 109. Discharge pipe; 110. Injection pipe; 111. Check valve; 2. Feed assembly; 201. Feed pipe; 202. End seat; 203. First rotating shaft; 204. First motor; 205. First spiral vane; 3. Stirring assembly; 301. Frame; 302. Shaft seat; 303. Second rotating shaft; 304. Support rod; 305. Divider cylinder; 306. Second spiral vane; 307. Stirring frame; 308. Stirring rod; 309. Reducer; 310. Second motor; 311. First coupling; 312. Second coupling. Detailed Implementation

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0036] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0037] like Figures 1-6As shown, an oily sludge pyrolysis treatment device includes a reactor 1 that can hold a certain amount of oily sludge for pyrolysis treatment. A feeding component 2 is provided on one side of the reactor 1 to inject the oily sludge to be treated from the outside into the reactor 1. A stirring component 3 is provided on the reactor 1 to fully stir the oily sludge at the required speed during the pyrolysis treatment process.

[0038] In this embodiment: the reactor 1 includes a reactor body 101, a reactor cover 102 is fixedly connected to the top of the reactor body 101, a feed pipe 103 is provided on one side of the reactor body 101, a first shut-off valve 104 is fixedly connected to one side of the feed pipe 103, a discharge pipe 105 is provided below the reactor body 101, a second shut-off valve 106 is fixedly connected below the discharge pipe 105, a first heat medium pipe 107 is provided below the feed pipe 103, a second heat medium pipe 108 is provided on the side of the reactor body 101 away from the feed pipe 103, a discharge pipe 109 is provided on one side of the reactor cover 102, a filling pipe 110 is provided on the other side of the reactor cover 102, and a one-way valve 111 is fixedly connected above the filling pipe 110;

[0039] The vessel body 101 is a hollow structure. The feed pipe 103 and the discharge pipe 105 both penetrate from the outer layer of the vessel body 101 to the inner layer of the vessel body 101. The first heat medium pipe 107 and the second heat medium pipe 108 only penetrate the outer layer of the vessel body 101.

[0040] The vessel body 101 and vessel cover 102 form a sealed container to hold oily sludge for pyrolysis treatment. The oily sludge, injected through the feeding assembly 2 and the first shut-off valve 104, is introduced into the vessel body 101 via the feed pipe 103. The discharge pipe 105 guides the oily sludge to the second shut-off valve 106 when it needs to be discharged from the device. The sludge is connected to an external heat medium supply device via the first heat medium pipe 107 and the second heat medium pipe 108, allowing the supplied heat medium, having a certain temperature, to form a heat exchanger between the vessel body 101 and the heat medium supply device. The oil flows continuously in the circuit to continuously heat the oily sludge in the reactor body 101. The oil vapor volatilized from the pyrolysis of the oily sludge is directed to an external gas treatment device through the discharge pipe 109, so that the gas treatment device can condense the released oil vapor and separate its different components. The oily sludge treatment liquid or diluent injected by the one-way valve 111 is introduced into the reactor body 101 through the injection pipe 110. The sealing effect of the reactor 1 is improved by the first shut-off valve 104, the second shut-off valve 106, and the one-way valve 111.

[0041] In this embodiment: the feeding assembly 2 includes a feed pipe 201 fixedly connected to one side of the first shut-off valve 104, an end seat 202 fixedly connected to one side of the feed pipe 201, a first rotating shaft 203 movably connected inside the end seat 202, a first motor 204 fixedly connected to one end of the first rotating shaft 203, and a first spiral blade 205 fixedly connected to the outer side of the first rotating shaft 203.

[0042] The end seat 202 is rotatably connected to the first rotating shaft 203; the open feed pipe 201 allows the oily sludge to be treated from the outside to be easily injected into this device. The end seat 202 closes the end of the feed pipe 201 away from the vessel body 101, and the first rotating shaft 203 is installed inside the feed pipe 201. The rotation of the output end of the first motor 204 is transmitted to the first spiral blade 205 through the first rotating shaft 203, so that the first spiral blade 205 can rotate around the axis of the first rotating shaft 203, so as to transport the oily sludge falling into the feed pipe 201 to the first shut-off valve 104.

[0043] In this embodiment: the stirring assembly 3 includes a lifting member for conveying and dividing the oily sludge in the central area of ​​the reactor 1, a stirring member for continuously stirring the oily sludge, a driving member for adjusting the stirring speed of the sludge, and a loading member for transmitting power from the driving member to the lifting member and the stirring member. The loading member includes a second rotating shaft 303 disposed inside the reactor body 101. The lifting member includes a support rod 304 fixedly connected to the bottom of the reactor cover 102. A separator cylinder 305 is fixedly connected to the bottom of the support rod 304. A second spiral blade 306 is fixedly connected to the outer side of the second rotating shaft 303. The loading member also includes a fixed connection above the reactor cover 102. The frame 301, the lid 102, and the frame 301 are all fixedly mounted with bearing seats 302. A second rotating shaft 303 is movably connected between the bearing seats 302. The stirring component includes a stirring frame 307 fixedly connected to the lower end of the second rotating shaft 303. A stirring rod 308 is fixedly connected to the stirring frame 307. The driving component includes a reducer 309 fixedly mounted in the frame 301. A second motor 310 is arranged above the reducer 309. A first coupling 311 is arranged between the output end of the second motor 310 and the input end of the reducer 309. A second coupling 312 is arranged between the output end of the reducer 309 and the upper end of the second rotating shaft 303.

[0044] The bearing seat 302 is rotatably connected to the second rotating shaft 303, and the height of the second spiral blade 306 is greater than that of the separator cylinder 305;

[0045] The frame 301 provides mounting positions for the reducer 309, the second motor 310, and one of the bearing seats 302. The second rotating shaft 303 is installed inside the vessel body 101 through the vessel cover 102 via the bearing seat 302. The partition cylinder 305 is installed inside the vessel body 101 via the support rod 304, which separates the internal space of the vessel body 101. The rotation of the output end of the second motor 310 is reduced and increased in torque via the first coupling 311, the reducer 309, and the second coupling 312, and then transmitted to the second rotating shaft 303. This allows the second rotating shaft 303 to drive the second spiral blade 306 and the stirring frame 307 to rotate. The rotating second spiral blade 306 lifts the oily sludge from the bottom area of ​​the vessel body 101 into the partition cylinder 305 and lifts the oily sludge in the partition cylinder 305 upwards. The rotating stirring frame 307 drives the stirring rod 308 to stir the oily sludge together.

[0046] Working principle: When this device is installed for the pyrolysis treatment of oily sludge, with the first shut-off valve 104 open and the second shut-off valve 106 closed, the first motor 204 drives the first rotating shaft 203 to rotate. Then, the oily sludge to be treated is continuously injected into the feed pipe 201. Since the first spiral blade 205 can rotate continuously with the first rotating shaft 203, the oily sludge entering the feed pipe 201 will be horizontally conveyed to the first shut-off valve 104. After an appropriate amount of oily sludge enters the reactor body 101 through the first shut-off valve 104 and the feed pipe 103, the first shut-off valve 104 can be closed and the first motor 204 can be stopped. Then, the pyrolysis treatment of the oily sludge begins.

[0047] During the process of continuously heating oily sludge by continuously flowing the heat medium through the first heat medium pipe 107 and the second heat medium pipe 108 in the hollow area between the inner and outer layers of the vessel body 101, the second motor 310 can be activated to drive the second rotating shaft 303 to rotate. The second spiral blade 306, which rotates with the second rotating shaft 303, can continuously transport the oily sludge from the bottom area of ​​the vessel body 101 to the partition cylinder 305 and lift it upwards. The oily sludge transported to the upper opening of the partition cylinder 305 will be mixed with the oily sludge outside the partition cylinder 305 again after passing through the gap between the support rods 304. Simultaneously, the stirring frame 307 and stirring rod 308, which rotate with the second rotating shaft 303, will continuously stir the oily sludge outside the partition cylinder 305, thereby improving the uniformity and fullness of heating of the oily sludge in the vessel body 101. During this process, the oil and gas precipitated from the oily sludge will continuously leave the device through the discharge pipe 109 and be further processed by other equipment.

[0048] When the oily sludge is pyrolyzed to the point where no more oil or gas is released, the second shut-off valve 106 can be opened and the second motor 310 can be reversed, so that the oily sludge can quickly leave the reactor body 101 along the discharge pipe 105 and the second shut-off valve 106 under the action of gravity and the reverse-rotating second spiral blade 306.

[0049] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A pyrolysis treatment device for oily sludge, characterized in that: The reactor (1) is capable of holding a certain amount of oily sludge for pyrolysis treatment. A feeding assembly (2) is provided on one side of the reactor (1) to inject the oily sludge to be treated from the outside into the reactor (1). A stirring assembly (3) is provided on the reactor (1) to fully stir the oily sludge at the required speed during the pyrolysis treatment. The reaction vessel (1) includes a vessel body (101), and a vessel cover (102) is fixedly connected to the top of the vessel body (101); The stirring assembly (3) includes a lifting member that can convey and divide the oily sludge in the central area of ​​the reactor (1), a stirring member that can continuously stir the oily sludge, a driving member that can adjust the stirring speed of the sludge, and a loading member that can transmit the power from the driving member to the lifting member and the stirring member. The loading component includes a second rotating shaft (303) disposed within the vessel body (101); The lifting component includes a support rod (304) fixedly connected below the vessel cover (102), a separator cylinder (305) fixedly connected below the support rod (304), and a second spiral blade (306) fixedly connected to the outer side of the second rotating shaft (303).

2. The pyrolysis treatment device for oily sludge according to claim 1, characterized in that: The loading component also includes a frame (301) fixedly connected above the vessel cover (102). A bearing seat (302) is fixedly installed on both the vessel cover (102) and the frame (301). A second rotating shaft (303) is movably connected between the bearing seats (302).

3. The pyrolysis treatment device for oily sludge according to claim 2, characterized in that: The stirring component includes a stirring frame (307) fixedly connected to the lower end of the second rotating shaft (303), and a stirring rod (308) is fixedly connected to the stirring frame (307).

4. The pyrolysis treatment device for oily sludge according to claim 3, characterized in that: The driving component includes a reducer (309) fixedly installed in the frame (301), a second motor (310) is provided above the reducer (309), a first coupling (311) is provided between the output end of the second motor (310) and the input end of the reducer (309), and a second coupling (312) is provided between the output end of the reducer (309) and the upper end of the second rotating shaft (303).

5. The pyrolysis treatment device for oily sludge according to claim 1, characterized in that: The vessel body (101) is a hollow structure.

6. The pyrolysis treatment device for oily sludge according to claim 2, characterized in that: The bearing seat (302) is rotatably connected to the second rotating shaft (303).

7. The pyrolysis treatment device for oily sludge according to claim 1, characterized in that: The height of the second spiral blade (306) is greater than that of the separator cylinder (305).

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