A suspended bed hydrogenation device for purifying tire oil feedstock

Abstract

The utility model discloses a kind of dehydration purification devices of suspension bed hydrogenated tyre oil raw materials, it is related to dehydration technical field, specifically a kind of dehydration purification device of suspension bed hydrogenated tyre oil raw materials, including dehydrator, the upper surface of the dehydrator is provided with the filter box that can be communicated with it, the middle part in filter box is provided with the filter drawer that can be pulled out from filter box front side, and the lower side of filter box inboard is fixedly connected with partition plate close to filter drawer, and the lower surface of partition plate is provided with the push-pull plate that can be moved left and right between filter box inner bottom surface, the inner periphery of the filter drawer is provided with replaceable filter screen, by the collaborative setting of filter drawer, hydraulic cylinder, drive rod, push-pull plate and one-way flow component, the speed of tyre oil raw materials passing through filter screen can be accelerated using the negative pressure generated by push-pull plate movement, and the effect of finally improving overall dehydration purification efficiency is achieved, accurately control raw materials from filter box into dehydrator through communicating port.

Description

Technical Field

[0001] This utility model relates to the field of dehydration technology, specifically to a dehydration and purification device for hydrogenated tire oil raw materials in a suspended bed. Background Technology

[0002] With the global energy structure transformation and the continuous improvement of environmental protection requirements, the resource recycling of waste tires has become an important way to solve "black pollution" and supplement energy supply. According to statistics, the total amount of waste tires generated globally each year exceeds 1.5 billion. If they are disposed of by landfill or incineration, they will not only occupy a large amount of land resources, but may also release toxic and harmful substances. However, tire oil extracted from waste tires through pyrolysis has become an important renewable energy source to replace raw materials such as heavy oil and coal tar due to its similar calorific value (about 42-45 MJ / kg) and good processability. It is widely used in industrial boiler combustion, refining and deep processing and other fields, providing key support for the development of the circular economy. In the deep processing technology of tire oil, the suspended bed hydrogenation process has become one of the core technologies for improving tire oil quality and expanding application scenarios due to its unique advantages: Compared with the traditional distillation purification process, which is difficult to remove large molecular impurities and solvent extraction method, which is prone to secondary pollution, the suspended bed hydrogenation process can efficiently convert the sulfur, nitrogen, oxygen and other heteroatoms contained in tire oil into easily separable substances such as H2S, NH3, and H2O through the catalytic action of Ni-Mo, Co-Mo and other catalysts under high pressure of 10-15MPa and high temperature of 350-450℃ (the impurity removal rate can reach more than 95%). At the same time, it cracks heavy hydrocarbon components (such as asphaltenes and gums) into light fuels such as gasoline and diesel fractions, which greatly increases the added value of tire oil, meets the quality requirements of vehicle fuel or chemical raw materials, and promotes the transformation of tire oil from "low-value fuel" to "high-value chemical product". However, the suspended bed hydrotreating process has extremely stringent requirements for the moisture content of tire oil feedstock (usually controlled below 0.5%). Excessive moisture content will have multi-dimensional negative impacts on the entire process chain: From the perspective of reaction efficiency, the moisture in the feedstock will undergo a water-gas shift reaction with the hydrogen in the hydrotreating system, generating inert gases such as CO and CO2. This not only dilutes the concentration of effective hydrocarbon components in the reaction system and reduces the conversion rate of the hydrotreating reaction (the conversion rate can decrease by 3-5% for every 1% increase in moisture), but also increases the energy consumption of subsequent gas separation processes. From the perspective of equipment and catalyst maintenance, moisture will react with active metal components (such as MoS2, NiS, etc.) on the catalyst surface to generate metal oxides that are easily soluble in the oil phase, leading to the loss of catalyst active sites and shortening the service life by 30%-50%, significantly increasing the company's catalyst procurement costs. From the perspective of safe production, under the high temperature and high pressure conditions of the suspended bed hydrotreating process, moisture will exacerbate hydrogen embrittlement corrosion of the inner walls of equipment such as reactors and pipelines. When the moisture content exceeds 1%, the equipment corrosion rate can increase by 2-3%. If the water content is too high, long-term operation can easily lead to safety accidents such as equipment weld leaks and pipeline ruptures, which seriously threaten production safety. Therefore, before the tire oil enters the suspended bed hydrogenation reaction system, it must undergo efficient dehydration and purification treatment to control the water content within the range required by the process. This is a key prerequisite for ensuring the stable operation of the suspended bed hydrogenation process, reducing production costs, and avoiding safety risks. For example, a waste tire pyrolysis oil dehydration device with application number 202122304566.1, although the technology improves dehydration efficiency by optimizing the centrifugal dehydration structure, does not fully adapt to the mechanical impurities commonly found in tire oil raw materials (such as carbon black particles, rubber fragments, trace metal residues, etc.), resulting in significant limitations in practical applications. When tire oil raw materials directly enter the centrifugal dehydration tank, impurities cause multiple problems: First, they easily adhere to the inner wall of the centrifugal drum or clog the filter holes, causing uneven distribution of centrifugal force, which not only directly reduces the dehydration rate but may also cause drum vibration, abnormal noise, and other malfunctions, increasing the frequency of equipment shutdown and maintenance. Second, some fine impurities will form a stable suspension system with the oil phase, encapsulating trace amounts of water, making it difficult to stably control the water content of the dehydrated tire oil, failing to meet the stringent feeding requirements of the suspension bed hydrogenation process. Third, under long-term operation, hard impurities will aggravate the wear of centrifugal components, shorten the service life of core components such as the drum and seals, and cleaning accumulated impurities requires additional manpower and time, significantly increasing the company's operation and maintenance costs. Utility Model Content

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a dehydration and purification device for hydrogenated tire oil raw materials in a suspended bed, which solves the problems mentioned in the background section.

[0004] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a dehydration and purification device for hydrogenated tire oil raw materials in a suspended bed, comprising a dehydrator, a filter box that can communicate with the upper surface of the dehydrator, a filter drawer that can be pulled out from the front of the filter box in the middle of the filter box, a partition plate that is fixedly connected to the lower part of the inner side of the filter box near the filter drawer, and a sliding plate that can move left and right between the lower surface of the partition plate and the bottom surface of the filter box, a replaceable filter screen that is provided on the inner circumferential surface of the filter drawer, and multiple unidirectional flow components that are provided on the lower surface of the filter drawer and the lower surface of the filter box.

[0005] Optionally, the upper surface of the filter box is fixedly connected to multiple feed cylinders, and the upper surface of the filter box is provided with a feed port at a position corresponding to each feed cylinder, which enables the filter box to communicate with the feed cylinder.

[0006] Optionally, the front of the filter drawer is fixedly connected with multiple handles.

[0007] Optionally, the upper surface of the partition plate is provided with a slope.

[0008] Optionally, a hydraulic cylinder is fixedly connected to the upper surface of the dewatering device, and a drive rod is fixedly connected to the side of the push-pull plate near the hydraulic cylinder. The end of the drive rod away from the push-pull plate passes through the filter box and is fixedly connected to the drive rod of the hydraulic cylinder.

[0009] Optionally, a fixing ring plate is detachably installed on the upper surface of the filter drawer, and an mounting ring plate is fixedly connected to the outer peripheral surface of the filter screen, with the mounting ring plate clamped between the fixing ring plate and the filter drawer.

[0010] Optionally, the unidirectional flow component includes a sealing plate that snaps onto the lower surface of the filter drawer and the lower surface of the filter box. The lower surface of the filter drawer and the lower surface of the filter box are each provided with a plurality of first discharge ports. A plurality of mounting grooves are provided around the lower surface of the filter drawer and the lower surface of the filter box near the first discharge ports. A plurality of tension springs are fixedly connected to the upper surface of the plurality of sealing plates, and the ends of the plurality of tension springs away from their corresponding sealing plates are respectively fixedly connected to the top surface of the corresponding mounting groove.

[0011] (III) Beneficial Effects This invention provides a dehydration and purification device for hydrogenated tire oil feedstock in a suspension bed, which has the following beneficial effects: 1. The dehydration and purification device for hydrogenated tire oil raw materials in this suspended bed, through the coordinated arrangement of filter drawer, hydraulic cylinder, drive rod, push-pull plate and unidirectional flow components, can achieve the effect of using the negative pressure generated by the movement of the push-pull plate to accelerate the speed of tire oil raw materials passing through the filter screen, and precisely control the raw materials to enter the dehydrator from the filter box through the connecting port, ultimately improving the overall dehydration and purification efficiency.

[0012] 2. The dehydration and purification device for hydrogenated tire oil raw materials in this suspended bed, through the matching configuration of filter drawers, handles, fixing ring plates, internal hex bolts and mounting ring plates, enables operators to easily pull out the filter drawers, quickly disassemble the fixing ring plates and replace the filter screen after long-term use of the filter screen, reducing the difficulty and time consumption of equipment maintenance and ensuring the continuous and stable operation of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a right-side cross-sectional view of the dehydrator of this utility model. Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0014] In the diagram: 1. Dehydrator; 2. Filter box; 3. Feed cylinder; 4. Filter drawer; 5. Handle; 6. Hydraulic cylinder; 7. Drive rod; 8. Feed inlet; 9. Push-pull plate; 10. Mounting ring plate; 11. Tension spring; 12. Fixing ring plate; 13. Filter screen; 14. Divider plate; 15. Sealing plate; 16. First discharge port; 17. Mounting groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Please see Figures 1 to 3This utility model provides a technical solution: a dehydration and purification device for hydrogenated tire oil raw materials in a suspended bed, including a dehydrator 1. The upper surface of the dehydrator 1 is provided with a filter box 2 that can communicate with it. The upper surface of the dehydrator 1 has a communication port at a position corresponding to the filter box 2. The tire oil raw materials flowing out of the filter box 2 can enter the dehydrator 1 through the communication port. The middle part of the filter box 2 is provided with a filter drawer 4 that can be pulled out from the front side of the filter box 2. A partition plate 14 is fixedly connected to the lower part of the inner side of the filter box 2 near the filter drawer 4. A push-pull plate 9 that can move left and right is provided between the lower surface of the partition plate 14 and the inner bottom surface of the filter box 2. A replaceable filter screen 13 is provided on the inner circumferential surface of the filter drawer 4. Multiple unidirectional flow components are provided on the lower surface of the filter drawer 4 and the lower surface of the filter box 2. Multiple feed cylinders 3 are fixedly connected to the upper surface of the filter box 2, and each feed cylinder 3 has a feed port 8 at a position on the upper surface of the filter box 2 that enables the filter box 2 to communicate with the feed cylinder 3. Therefore, the operator can inject tire oil raw material into the filter box 2 through the feed cylinder 3. Multiple handles 5 are fixedly connected to the front of the filter drawer 4. Through the handles 5, the operator can easily pull the filter drawer 4 out of the filter box 2. At the same time, a sealing ring is provided at the connection between the filter drawer 4 and the filter box 2 to ensure the sealing effect.

[0017] Please see Figures 1 to 3 A hydraulic cylinder 6 is fixedly connected to the upper surface of the dehydrator 1. Both the hydraulic cylinder 6 and the dehydrator 1 are existing technologies, and their working principles will not be described in detail here. A drive rod 7 is fixedly connected to the side of the push-pull plate 9 near the hydraulic cylinder 6. The end of the drive rod 7 away from the push-pull plate 9 passes through the filter box 2 and is fixedly connected to the drive rod of the hydraulic cylinder 6. A sealing ring is provided at the connection between the drive rod 7 and the filter box 2. Therefore, when the hydraulic cylinder 6 is working, the movement of its internal drive rod will drive the drive rod 7 to move synchronously, and then the drive rod 7 will drive the push-pull plate 9 to move. When the push-pull plate 9 moves, a push-pull effect will be formed in the space between the lower surface of the partition plate 14 and the bottom surface of the filter box 2: the push-pull plate 9 can draw tire oil raw material when it moves to the right, and push-pull plate 9 can push the tire oil raw material that has just been drawn in when it moves to the left.

[0018] Please see Figures 1 to 3A fixing ring plate 12 is detachably installed on the upper surface of the filter drawer 4. The upper surface of the fixing ring plate 12 is threaded with multiple hexagonal bolts, one end of each hexagonal bolt extending into the filter drawer 4. An mounting ring plate 10 is fixedly connected to the outer circumference of the filter screen 13, and the mounting ring plate 10 is clamped between the fixing ring plate 12 and the filter drawer 4. Therefore, after the filter drawer 4 is pulled out of the filter box 2, the hexagonal bolts can be rotated to release the limiting position of the fixing ring plate 12 and the filter drawer 4. Then the fixing ring plate 12 is removed, and the mounting ring plate 10 is taken out from the filter drawer 4 and replaced with a mounting ring plate 10 with a new filter screen 13. Finally, the fixing ring plate 12 is repositioned on the filter drawer 4 by the hexagonal bolts. Therefore, after the filter screen 13 has been used for a long time, the personnel can easily replace it with a new filter screen 13 for continued use.

[0019] Please see Figures 1 to 3 The unidirectional flow component includes a sealing plate 15 that is snapped onto the lower surface of the filter drawer 4 and the lower surface of the filter box 2. The lower surface of the filter drawer 4 and the lower surface of the filter box 2 are provided with multiple first discharge ports 16. Multiple mounting grooves 17 are provided around the lower surface of the filter drawer 4 and the lower surface of the filter box 2 near the first discharge ports 16. Multiple tension springs 11 are fixedly connected to the upper surface of the multiple sealing plates 15. The ends of the multiple tension springs 11 away from the corresponding sealing plates 15 are respectively fixedly connected to the top surface of the corresponding mounting grooves 17. The upper surface of the partition plate 14 is provided with a slope. The filter drawer 4 divides the interior of the filter box 2 into two spaces: the upper part is the filtration space and the lower part is the sliding space. When the push-pull plate 9 moves to the right, a negative pressure is generated in the sliding space. At this time, the sealing plate 15 on the filter drawer 4 will stretch the tension spring 11 due to the negative pressure, opening the first discharge port 16, thereby accelerating the speed at which the tire oil raw material passes through the filter screen 13. When the push-pull plate 9 moves to the left, it will push the tire oil raw material in the sliding space, causing the raw material to push open the sealing plate 15 from the first discharge port 16 of the filter box 2 and finally enter the dehydrator 1.

[0020] In summary, when using this suspended bed hydrogenated tire oil raw material dehydration and purification device, the operator first injects the tire oil raw material into the filter box 2 through the feed cylinder 3 and the corresponding feed port 8. The raw material first enters the upper filtration space where the filter drawer 4 is located, and is filtered by the filter screen 13 inside the filter drawer 4. At the same time, the hydraulic cylinder 6 on the dehydrator 1 is activated, and its internal drive rod drives the drive rod 7 to move synchronously, thereby pulling the push-pull plate 9 to move in the space between the lower surface of the partition plate 14 and the inner bottom surface of the filter box 2. When the push-pull plate 9 moves to the right, a negative pressure is generated in the sliding space. The negative pressure causes the sealing plate 15 on the lower surface of the filter drawer 4 to stretch the tension spring 11 and open the first outlet. The feed inlet 16 accelerates the passage of tire oil raw materials through the filter screen 13 into the suction space. When the push-pull plate 9 moves to the left, it pushes the raw materials in the suction space, causing the raw materials to push open the sealing plate 15 from the first discharge port 16 on the lower surface of the filter box 2, and finally enter the dehydrator 1 through the connecting port on the dehydrator 1 to complete the dehydration and purification. If the filter screen 13 needs to be replaced after long-term use, the operator can easily pull out the filter drawer 4 through the handle 5, turn the hex bolt to release the limit of the fixing ring plate 12, remove the old mounting ring plate 10 and replace it with the mounting ring plate 10 with the new filter screen 13, and then reconnect the fixing ring plate 12 with the hex bolt to resume continuous operation.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dehydration and purification apparatus for hydrotreated tire oil feedstock in a suspended bed, comprising a dehydrator (1), characterized in that: The upper surface of the dehydrator (1) is provided with a filter box (2) that can communicate with it. The middle part of the filter box (2) is provided with a filter drawer (4) that can be pulled out from the front side of the filter box (2). A partition plate (14) is fixedly connected to the lower part of the inner side of the filter box (2) near the filter drawer (4). A push-pull plate (9) that can move left and right is provided between the lower surface of the partition plate (14) and the inner bottom surface of the filter box (2). A replaceable filter screen (13) is provided on the inner circumferential surface of the filter drawer (4). Multiple unidirectional flow components are provided on the lower surface of the filter drawer (4) and the lower surface of the filter box (2).

2. The dehydration and purification apparatus for hydrotreated tire oil feedstock according to claim 1, characterized in that: The upper surface of the filter box (2) is fixedly connected with multiple feed cylinders (3), and the upper surface of the filter box (2) and each feed cylinder (3) are provided with feed inlets (8) that enable the filter box (2) to communicate with the feed cylinder (3).

3. The dehydration and purification apparatus for hydrogenated tire oil feedstock in a suspended bed according to claim 1, characterized in that: The front of the filter drawer (4) is fixedly connected with multiple handles (5).

4. The dehydration and purification apparatus for suspended bed hydrogenated tire oil feedstock according to claim 1, characterized in that: The upper surface of the partition plate (14) is provided with a slope.

5. The dehydration and purification apparatus for hydrotreated tire oil feedstock according to claim 1, characterized in that: A hydraulic cylinder (6) is fixedly connected to the upper surface of the dehydrator (1). A drive rod (7) is fixedly connected to the side of the push-pull plate (9) near the hydraulic cylinder (6). The end of the drive rod (7) away from the push-pull plate (9) passes through the filter box (2) and is fixedly connected to the drive rod of the hydraulic cylinder (6).

6. The dehydration and purification apparatus for hydrotreated tire oil feedstock according to claim 1, characterized in that: The upper surface of the filter drawer (4) is detachably fitted with a fixing ring plate (12), and the outer circumferential surface of the filter screen (13) is fixedly connected with a mounting ring plate (10), and the mounting ring plate (10) is clamped between the fixing ring plate (12) and the filter drawer (4).

7. The dehydration and purification apparatus for hydrotreated tire oil feedstock according to claim 1, characterized in that: The unidirectional flow component includes a sealing plate (15) that is snapped onto the lower surface of the filter drawer (4) and the lower surface of the filter box (2). The lower surface of the filter drawer (4) and the lower surface of the filter box (2) are provided with multiple first discharge ports (16). Multiple mounting grooves (17) are provided around the lower surface of the filter drawer (4) and the lower surface of the filter box (2) near the first discharge ports (16). Multiple tension springs (11) are fixedly connected to the upper surface of the multiple sealing plates (15). The ends of the multiple tension springs (11) away from the corresponding sealing plates (15) are respectively fixedly connected to the top surface of the corresponding mounting grooves (17).

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