An apparatus for separating residual catalyst from catalytic cracking slurry oil

Abstract

The utility model belongs to petrochemical equipment technical field, concretely relates to a kind of equipment of separating residual catalyst in catalytic cracking slurry oil. Including filter tank, the filter tank includes cylindrical filter cartridge, the bottom of the cylindrical filter cartridge is equipped with annular groove around, the periphery of the annular groove is equipped with settling tank, the section of the settling tank is V-shaped structure, the annular groove is communicated with the settling tank and is arranged. The way of secondary filtration and sedimentation of the utility model makes the catalyst separation in catalytic cracking slurry oil more complete;The utility model can judge whether the first filter screen needs cleaning or replacement, improve the replacement time accuracy and timeliness of filter screen;The utility model can effectively prevent the phenomenon that catalyst is accumulated in the bottom of filter tank.

Description

Technical Field

[0001] This utility model belongs to the field of petrochemical equipment technology, specifically relating to a device for separating residual catalyst in catalytic cracking slurry. Background Technology

[0002] Catalytic cracking is a petroleum processing technology used to convert heavy petroleum feedstocks into more valuable products, such as gasoline and petrochemical raw materials. In this process, petroleum feedstocks are broken down into lighter hydrocarbon compounds by a catalyst. The slurry oil produced during refining contains residual catalytic cracking catalyst particles.

[0003] Chinese Patent Application No. 201520047978.3 discloses a device for separating residual catalyst particles in catalytic cracking slurry. This device has a convex, symmetrical structure with filters on both sides, forming sealed spaces between the filters and the sides of the device. A telescopic shaft connects the filters to the side walls of the device. Slurry outlets are located at the bottom of both sides of the device, and a sludge outlet is located at the center of the bottom. The slurry inlet is located on the top side wall of the device, and a flushing liquid outlet is located at the top. The filters have sliding plates at both ends, one end connected to the filter and the other extending to the side of the device. An ultrasonic module is mounted on the sliding plate at the bottom of the device. This patent effectively solves the problem of filter clogging through the ultrasonic module and backwashing. The device has a simple, scientifically sound structure, making it easy to promote and use.

[0004] Filtration separation via a filter screen can result in incomplete catalyst filtration, and the aforementioned patented filter screen is inconvenient to replace and maintain. In some separation equipment, separation is achieved through filtration or sedimentation, but over time, the catalyst can accumulate at the bottom of the equipment, requiring a significant amount of time for maintenance, which is inconvenient. Utility Model Content

[0005] To address the aforementioned shortcomings, this invention provides a device for separating residual catalyst from catalytic cracking slurry. This invention achieves more complete catalyst separation through a secondary filtration and sedimentation process. Furthermore, this invention can determine whether the first filter screen needs cleaning or replacement, improving the accuracy and timeliness of filter screen replacement. Finally, this invention effectively prevents catalyst accumulation at the bottom of the filter tank.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An apparatus for separating residual catalyst in catalytic cracking slurry includes a filter tank, the filter tank including a cylindrical filter cylinder, the bottom of the cylindrical filter cylinder being provided with an annular groove around its perimeter, the annular groove being provided with a settling tank having a V-shaped cross-section, and the annular groove and the settling tank being connected.

[0008] A guide rod is fixedly installed in the middle of the bottom of the cylindrical filter cylinder, and a first filter screen is movably inserted on the guide rod, which divides the cylindrical filter cylinder into two spaces. A spring is sleeved on the guide rod, one end of which is fixedly connected to the middle of the bottom of the cylindrical filter cylinder, and the other end of which movably abuts against the first filter screen. A second filter screen is installed inside the end of the settling tank away from the annular groove. Two first oil outlets are symmetrically arranged at the bottom of the settling tank, and valves are installed on the first oil outlets.

[0009] The bottom of the cylindrical filter cartridge is fixedly equipped with a support frame.

[0010] Furthermore, the inner side of the cylindrical filter cylinder is symmetrically provided with limiting grooves, and the two ends of the first filter screen are provided with limiting protrusions, which are correspondingly inserted into the limiting grooves of the cylindrical filter cylinder.

[0011] Furthermore, a top cover is installed on the top of the cylindrical filter cartridge, and fixing rods are connected to both ends of the first filter screen. The fixing rods pass through the top cover, and the two fixing rods are fixedly connected to an abutment plate at one end outside the top cover.

[0012] Furthermore, the top cover is provided with an oil inlet.

[0013] Furthermore, the abutment plate has an abutment block in the middle, and the top cover has a hydraulic rod installed in the middle of its top, with the hydraulic rod located directly below the abutment block.

[0014] Furthermore, handles are symmetrically installed on the top cover.

[0015] Furthermore, the two ends of the abutment plate are fixedly connected to the fixing rod by screws.

[0016] Furthermore, a second oil outlet is provided on the outside of the settling tank, and a valve is installed on the second oil outlet, which is located above the second filter screen.

[0017] Furthermore, the horizontal height of the end of the settling trough furthest from the annular groove is higher than the horizontal height of the annular groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) This utility model adds oil slurry into a cylindrical filter cylinder, so that the oil slurry is filtered through the first filter screen. The large particles of catalyst remaining are filtered and left above the first filter screen. After the first filtration, the oil slurry enters the settling tank through the annular groove. The catalyst settles in the settling tank. A part of the catalyst remains at the bottom of the V-shaped settling tank. After settling, the oil slurry is filtered through the second filter screen to remove the fine catalyst. Finally, the separated oil slurry is obtained at the port of the settling tank. The catalyst separation in the catalytic cracking oil slurry is more complete by the secondary filtration and settling method of this utility model.

[0020] (2) Through the structural design of the guide rod and spring, when the first filtration is performed, oil slurry is added, the first filter screen descends, and the oil slurry after the first filtration enters the cylindrical filter cylinder. The catalyst is filtered and left above the first filter screen. After the first filtration is completed, the first filter screen rises under the action of the spring. The filtration progress of the oil slurry can be judged by the movement trajectory of the first filter screen, which is descending and then rising. After the equipment is used multiple times, a large amount of residual catalyst will accumulate above the first filter screen. This acts on the spring to make the initial position of the first filter screen continuously descend, thereby judging whether the first filter screen needs to be cleaned or replaced, improving the accuracy and timeliness of the filter screen replacement time.

[0021] (3) The present invention facilitates the cleaning and maintenance of the first filter screen through the structural design of the hydraulic rod and the abutment block. When too much residual catalyst accumulates on the first filter screen, the hydraulic rod extends and acts on the abutment block, thereby raising the first filter screen and facilitating the cleaning and maintenance of the first filter screen.

[0022] (4) Through the structural design of the first oil outlet and the second oil outlet, when the catalyst in the slurry does not need to be deeply removed, only the first oil outlet is opened to obtain a specific slurry; when the catalyst in the slurry finally needs to be deeply removed, only the second oil outlet is opened to obtain a slurry with the catalyst deeply removed; at the same time, the two first oil outlets can be used as cleaning ports. When it is necessary to stop the machine for cleaning, the two first oil outlets are opened at the same time to discharge the residual catalyst in the settling tank, pour cleaning liquid into one of the first oil outlets, and the cleaning liquid flows out from the other first oil outlet after passing through the settling tank, thereby cleaning the settling tank and the bottom of the cylindrical filter cartridge. The cleaning efficiency is high and the cleaning is thorough, which can effectively prevent the accumulation of catalyst at the bottom of the filter tank. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a device for separating residual catalyst in catalytic cracking slurry according to the present invention;

[0024] Figure 2 This is a schematic cross-sectional view of the device for separating residual catalyst in catalytic cracking slurry according to the present invention;

[0025] Figure 3 This is a schematic diagram of the dispersion structure of an apparatus for separating residual catalyst in catalytic cracking slurry according to the present invention.

[0026] The attached diagram is labeled as follows: Filter tank - 100; Cylindrical filter cartridge - 110; Top cover - 120; Settling tank - 130; Second oil outlet - 140; First oil outlet - 150; Guide rod - 160; Spring - 170; Oil inlet - 180; Handle - 190; First filter screen - 210; Fixing rod - 220; Abutment plate - 230; Abutment block - 231; Hydraulic rod - 300; Support frame - 400; Second filter screen - 500. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Example

[0029] like Figures 1-3 As shown, an apparatus for separating residual catalyst in catalytic cracking slurry includes a filter tank 100, the filter tank 100 including a cylindrical filter cylinder 110, the bottom of the cylindrical filter cylinder 110 is provided with an annular groove around its perimeter, and a settling tank 130 is provided around the annular groove. The settling tank 130 has a V-shaped cross-section, and the annular groove and the settling tank 130 are connected.

[0030] A guide rod 160 is fixedly provided at the bottom center of the cylindrical filter cylinder 110. A first filter screen 210 is movably inserted on the guide rod 160, which divides the cylindrical filter cylinder 110 into two spaces. A spring 170 is sleeved on the guide rod 160. One end of the spring 170 is fixedly connected to the bottom center of the cylindrical filter cylinder 110, and the other end of the spring 170 is movably abutting against the first filter screen 210. A second filter screen 500 is installed inside the settling tank 130 at the end away from the annular groove. Two first oil outlets 150 are symmetrically arranged at the bottom of the settling tank 130, and valves are installed on the first oil outlets 150.

[0031] The bottom of the cylindrical filter cartridge 110 is fixedly provided with a support frame 400.

[0032] This invention involves adding oil slurry into a cylindrical filter cartridge 110, allowing the oil slurry to undergo primary filtration through a first filter screen 210. Large residual catalyst particles are filtered out and remain above the first filter screen 210. After primary filtration, the oil slurry enters a settling tank 130 through an annular groove, where the catalyst settles. A portion of the catalyst remains at the bottom of the V-shaped settling tank 130. After settling, the oil slurry undergoes secondary filtration through a second filter screen 500, removing fine catalyst particles. Finally, the separated oil slurry is obtained at the port of the settling tank 130. This invention achieves more complete catalyst separation in catalytic cracking oil slurry through secondary filtration and settling.

[0033] This invention utilizes the structural design of the guide rod 160 and the spring 170. During the first filtration, oil slurry is added, and the first filter screen 210 descends. The filtered oil slurry enters the cylindrical filter cylinder 110, while the catalyst is filtered and remains above the first filter screen 210. After the first filtration is complete, the first filter screen 210 rises under the action of the spring 170. The filtration progress of the oil slurry can be judged by the movement trajectory of the first filter screen 210, which first descends and then rises. After multiple uses of the equipment, a large amount of residual catalyst will accumulate above the first filter screen 210. This causes the spring 170 to continuously descend from its initial position, thus allowing for the determination of whether the first filter screen 210 needs cleaning or replacement, improving the accuracy and timeliness of filter screen replacement.

[0034] Furthermore, the cylindrical filter cylinder 110 has symmetrically provided limiting grooves on its inner side, and the first filter screen 210 has limiting protrusions at both ends, with the limiting protrusions of the first filter screen 210 correspondingly inserted into the limiting grooves of the cylindrical filter cylinder 110.

[0035] Furthermore, a top cover 120 is installed on the top of the cylindrical filter cartridge 110, and fixing rods 220 are connected to both ends of the first filter screen 210. The fixing rods 220 pass through the top cover 120, and the ends of the two fixing rods 220 located outside the top cover 120 are fixedly connected to an abutment plate 230. The fixing rods 220 also facilitate the determination of the current height of the first filter screen 210 within the cylindrical filter cartridge 110.

[0036] Furthermore, the top cover 120 is provided with an oil inlet 180. The oil inlet 180 is used to add the oil slurry to be filtered.

[0037] Furthermore, the abutment plate 230 has an abutment block 231 in the middle, and the top cover 120 has a hydraulic rod 300 installed in the middle of its top, with the hydraulic rod 300 located directly below the abutment block 231.

[0038] This utility model, through the structural design of the hydraulic rod 300 and the abutment block 231, facilitates the cleaning and maintenance of the first filter screen 210. When too much residual catalyst accumulates on the first filter screen 210, the hydraulic rod 300 extends and acts on the abutment block 231, thereby causing the first filter screen 210 to rise, which facilitates the cleaning and maintenance of the first filter screen 210.

[0039] Furthermore, handles 190 are symmetrically mounted on the top cover 120. The handles 190 facilitate the installation and removal of the top cover 120.

[0040] Furthermore, both ends of the abutment plate 230 are fixedly connected to the fixing rod 220 by screws. The fixed connection between the abutment plate 230 and the fixing rod 220 by screws makes the abutment plate 230 easy to disassemble, thereby facilitating the disassembly of the top cover 120 and the maintenance and cleaning of the inside of the cylindrical filter cartridge 110.

[0041] Furthermore, a second oil outlet 140 is provided on the outer side of the settling tank 130, and a valve is installed on the second oil outlet 140. The second oil outlet 140 is located above the second filter screen 500.

[0042] This invention, through the structural design of the first oil outlet 150 and the second oil outlet 140, allows for the following: when the catalyst in the slurry does not require deep removal, only the first oil outlet 150 is opened to obtain a specific slurry; when the catalyst in the slurry ultimately requires deep removal, only the second oil outlet 140 is opened to obtain a slurry with the catalyst deeply removed. Simultaneously, the two first oil outlets 150 can also serve as cleaning ports. When cleaning is required, both first oil outlets 150 are opened simultaneously to discharge residual catalyst from the settling tank 130. Cleaning fluid is then poured into one of the first oil outlets 150, and after passing through the settling tank 130, it flows out from the other first oil outlet 150, thereby cleaning the settling tank 130 and the bottom of the cylindrical filter cartridge 110. This cleaning efficiency is high and thorough, effectively preventing catalyst accumulation at the bottom of the filter tank 100.

[0043] Furthermore, the horizontal level of the end of the settling tank 130 furthest from the annular groove is higher than the horizontal level of the annular groove. This horizontal design facilitates cleaning of the bottom of the settling tank 130 and the cylindrical filter cartridge 110.

[0044] The above description is a further detailed explanation of the present utility model in conjunction with specific implementation examples. It should not be considered that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art to which the present utility model pertains, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the protection scope of the present utility model.

[0045] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An apparatus for separating residual catalyst from fluid catalytic cracking slurry oil, characterized by, The filter includes a filter tank (100), which includes a cylindrical filter cylinder (110). The bottom of the cylindrical filter cylinder (110) is provided with an annular groove, and a settling trough (130) is provided around the annular groove. The settling trough (130) has a V-shaped cross-section, and the annular groove and the settling trough (130) are connected. A guide rod (160) is fixedly provided in the middle of the bottom of the cylindrical filter cylinder (110). A first filter screen (210) is movably inserted on the guide rod (160). The first filter screen (210) isolates the cylindrical filter cylinder (110) into two spaces. A spring (170) is sleeved on the guide rod (160). One end of the spring (170) is fixedly connected to the middle of the bottom of the cylindrical filter cylinder (110), and the other end of the spring (170) is movably abutting against the first filter screen (210). A second filter screen (500) is installed inside the end of the settling tank (130) away from the annular groove. Two first oil outlets (150) are symmetrically arranged at the bottom of the settling tank (130). A valve is installed on the first oil outlet (150). The bottom of the cylindrical filter cartridge (110) is fixedly provided with a support frame (400).

2. The apparatus for separating residual catalyst in catalytic cracking slurry as claimed in claim 1, wherein, The cylindrical filter cylinder (110) has symmetrically provided limiting grooves on its inner side, and the first filter screen (210) has limiting protrusions at both ends. The limiting protrusions of the first filter screen (210) are inserted into the limiting grooves of the cylindrical filter cylinder (110).

3. The apparatus for separating residual catalyst from catalytic cracking slurry oil according to claim 2, wherein The top of the cylindrical filter cartridge (110) is fitted with a top cover (120), and the two ends of the first filter screen (210) are connected to fixing rods (220). The fixing rods (220) pass through the top cover (120), and the two fixing rods (220) are fixedly connected to an abutment plate (230) at one end outside the top cover (120).

4. The apparatus for separating residual catalyst from catalytic cracking slurry oil according to claim 3, wherein The top cover (120) is provided with an oil inlet (180).

5. The apparatus for separating residual catalyst from fluid catalytic cracking slurry oil according to claim 3, wherein The abutment plate (230) has an abutment block (231) in the middle, and the top cover (120) has a hydraulic rod (300) installed in the middle of the top, with the hydraulic rod (300) located directly below the abutment block (231).

6. The apparatus for separating residual catalyst from catalytic cracking slurry oil according to claim 3, wherein Handles (190) are symmetrically installed on the top cover (120).

7. The apparatus for separating residual catalyst from catalytic cracking slurry oil according to claim 3, wherein The two ends of the abutment plate (230) are fixedly connected to the fixing rod (220) by screws.

8. The apparatus for separating residual catalyst from fluid catalytic cracking slurry oil according to claim 1, wherein The settling tank (130) is provided with a second oil outlet (140) on its outer side. A valve is installed on the second oil outlet (140), and the second oil outlet (140) is located above the second filter screen (500).

9. The apparatus for separating residual catalyst from fluid catalytic cracking slurry oil according to claim 1, wherein The horizontal height of the end of the settling trough (130) away from the annular groove is higher than the horizontal height of the annular groove.

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