A multi-stage backwash device for diesel hydrogenation feedstock

Abstract

The utility model relates to petroleum processing technical field, concretely is a diesel hydrogenation raw material multistage backflushing device, including the box, the inside of box is provided with filter assembly, filter assembly includes filter bowl, solenoid valve no.

Description

Technical Field

[0001] This utility model relates to the field of petroleum processing technology, specifically to a multi-stage backwashing device for diesel hydrotreating feedstock. Background Technology

[0002] The multi-stage backwashing unit for diesel hydrotreating feedstock is a device used in the diesel hydrotreating process to filter and automatically backwash the feedstock oil. It can effectively remove solid impurities from the feedstock oil, ensure the smooth progress of subsequent hydrotreating reactions, and extend the service life of the catalyst.

[0003] Current multi-stage backwashing units for diesel hydrotreating feedstock require shutdown for maintenance during backwashing, leading to production interruptions. Furthermore, they cannot perform localized backwashing, reducing production efficiency and increasing energy consumption during backwashing. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-stage backwashing device for diesel hydrotreating feedstock, to solve the problems mentioned in the background art, such as the need for machine shutdown for maintenance during backwashing, leading to production interruption, and the inability to perform localized backwashing alone, resulting in reduced production efficiency and increased energy consumption for backwashing. To achieve the above objective, this utility model provides the following technical solution: A multi-stage backwashing device for diesel hydrotreating feedstock, comprising a housing, an internal filter assembly including a filter cartridge, a first solenoid valve, filter holes, a partition, a fixing plate, a first arc plate, and a second arc plate; an internal connecting assembly including a tee pipe, a second solenoid valve, a bend, a collection box, and a second connecting pipe; and several filter cartridges inside the housing, each filter cartridge having a first solenoid valve fixedly connected to both ends, and several filter holes formed on the side surface of the filter cartridge. The filter cartridge has several partitions fixedly connected to its side surface. The filter assembly also includes a fixing plate, with two fixing plates fixedly connected to the side surface of the filter cartridge. An arc plate one is fixedly connected to one side of the fixing plate, and an arc plate two is movably connected to one side of the fixing plate. The outer diameter of the arc plate two is smaller than the inner diameter of the arc plate one. Several limiting grooves are formed on the side surface of the arc plate two. Several limiting blocks are fixedly connected inside the arc plate one, and the limiting blocks are adapted to the limiting grooves. A rotary motor is fixedly connected inside the fixing plate, and a gear is fixedly connected to the transmission end of the rotary motor. The inner part of the second arc plate is fixedly connected with several toothed blocks, and the gear meshes with the toothed blocks. This multi-stage backwashing device for diesel hydrotreating feedstock, by adding a filter assembly, adopts a design where several filter cartridges work in parallel, significantly increasing the filtration area and improving the feedstock throughput per unit time. During the multi-stage backwashing process, when a single filter cartridge is being cleaned, the switching control between solenoid valve two and solenoid valve one ensures that the remaining filter cartridges operate normally, avoiding production interruptions caused by shutdown cleaning in traditional devices. The concentric design of the first and second arc plates, combined with the rotation adjustment structure, and the limiting block and... The limiting groove ensures rotational precision, allowing for accurate control of the rinsing area and pressure, forming a directional high-pressure water flow. The baffles on the side surface of the filter cartridge enhance water flow disturbance, effectively removing stubborn impurities adhering to the inner wall of the filter cartridge, reducing the risk of filter clogging, and extending the service life of the filter cartridge. Through precise switching between solenoid valve one and solenoid valve two, the filtration or backwashing status of each filter cartridge can be controlled individually, achieving targeted cleaning and reducing unnecessary media consumption. The design of the three-way pipe and connecting pipe one optimizes the media flow path and reduces pressure loss, while connecting pipe two ensures efficient discharge of clean raw materials, reducing energy consumption.

[0005] Further preferably, the connecting assembly also includes a connecting pipe 1, which is disposed on the top of the housing. Several tee pipes are fixedly connected inside the connecting pipe 1, and each of the opposite ends of the tee pipes is fixedly connected to a solenoid valve 2. This type of multi-stage backwashing device for diesel hydrotreating feedstock, by adding the connecting assembly, ensures stable backwashing distribution through the backwashing system composed of the connecting pipe 1, the tee pipes, and the bend pipes, significantly improving overall work efficiency.

[0006] More preferably, the other end of the second solenoid valve is fixedly connected to a bend, and the other end of the bend is fixedly connected to a filter cartridge.

[0007] More preferably, a collection box is fixedly connected to the inner wall of each opposite side of the box, and a plurality of solenoid valves are fixedly connected to one side of the collection box.

[0008] More preferably, a connecting pipe is fixedly connected to the other side of the box, and a sewage drain is provided on the bottom inner wall of the box.

[0009] More preferably, a drain pipe is fixedly connected to the bottom of the box, and a support frame is fixedly connected to the bottom of the box.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] In this invention, the multi-stage backwashing device for diesel hydrotreating feedstock significantly increases the filtration area and improves the feedstock throughput per unit time by adding a filter assembly and employing a design where several filter cartridges operate in parallel. During the multi-stage backwashing process, when a single filter cartridge is being cleaned, the remaining filter cartridges operate normally while the other cartridges are being switched via solenoid valve one and solenoid valve two, avoiding production interruptions caused by shutdowns for cleaning in traditional devices. The concentric design of arc plate one and arc plate two, combined with the rotation adjustment structure, limit blocks, and limit grooves ensure rotational accuracy, allowing precise control of the rinsing area and pressure to form a directional high-pressure water flow. The baffles on the side surface of the filter cartridge enhance water flow disturbance, effectively removing stubborn impurities adhering to the inner wall of the filter cartridge, reducing the risk of filter clogging, and extending the service life of the filter cartridge. Through precise switching of solenoid valve one and solenoid valve two, the filtration or backwashing status of each filter cartridge can be controlled individually, achieving targeted cleaning and reducing unnecessary media consumption. The design of the three-way pipe and connecting pipe one optimizes the media flow path and reduces pressure loss, while connecting pipe two ensures efficient discharge of clean feedstock and reduces energy consumption.

[0012] In this utility model, the multi-stage backwashing device for diesel hydrotreating feedstock, by adding connecting components, ensures stable backwashing distribution through a backwashing system composed of connecting pipe 1, tee pipe and bend pipe, which significantly improves the overall working efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0015] Figure 3 This is a schematic diagram of a partial structure of the present invention. Figure 1 ;

[0016] Figure 4 This is a schematic diagram of a partial structure of the present invention. Figure 2 ;

[0017] Figure 5 This is a schematic diagram of a partial structure of the present invention. Figure 3 ;

[0018] Figure 6 This is a schematic diagram of a partial structure of the present invention. Figure 4 .

[0019] In the diagram: 1. Housing; 2. Filter assembly; 201. Filter cartridge; 202. Solenoid valve one; 203. Filter eyelet; 204. Partition plate; 205. Fixing plate; 206. Arc plate one; 207. Arc plate two; 208. Limiting block; 209. Limiting groove; 210. Tooth block; 211. Rotary motor; 212. Gear; 3. Connecting assembly; 301. Connecting pipe one; 302. T-pipe; 303. Solenoid valve two; 304. Bend; 305. Collection box; 306. Connecting pipe two; 4. Sewage tank; 5. Sewage pipe; 6. Support frame. Detailed Implementation

[0020] 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, and 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.

[0021] Please see Figure 1 - Figure 6A multi-stage backwashing device for diesel hydrotreating feedstock includes a housing 1. Inside the housing 1 is a filter assembly 2, which includes filter cartridges 201, a first solenoid valve 202, filter holes 203, partitions 204, a fixed plate 205, an arc plate 206, and a second arc plate 207. Inside the housing 1 is a connecting assembly 3, which includes a three-way pipe 302, a second solenoid valve 303, a bend 304, a collection box 305, and a second connecting pipe 306. Inside the housing 1 are several filter cartridges 201, both ends of which are fixedly connected to the first solenoid valve 202. Several filter holes 203 are formed on the side surface of each filter cartridge 201, and several partitions 204 are fixedly connected to the side surface of each filter cartridge 201. The filter assembly 2 also includes a fixed plate 205. A fixed disk 205 is fixedly connected to the side surface of the filter cartridge 201. An arc plate 206 is fixedly connected to one side of the fixed disk 205, and an arc plate 207 is movably connected to the other side of the fixed disk 205. The outer diameter of the arc plate 207 is smaller than the inner diameter of the arc plate 206. Several limiting grooves 209 are formed on the side surface of the arc plate 207. Several limiting blocks 208 are fixedly connected inside the arc plate 206, and the limiting blocks 208 are adapted to the limiting grooves 209. A rotary motor 211 is fixedly connected inside the fixed disk 205, and a gear 212 is fixedly connected to the transmission end of the rotary motor 211. Several toothed blocks 210 are fixedly connected inside the arc plate 207, and the gear 212 meshes with the toothed blocks 210. During the raw material filtration stage, the diesel hydrotreating feedstock to be processed passes through… Connecting pipe 2 306 enters the device and is distributed to each filter cartridge 201 via collecting box 305. At this time, solenoid valve 1 202 at both ends of filter cartridge 201 is open, and solenoid valve 2 303 connected to tee pipe 302 is closed. The raw material flows into the filter cartridge 201 through collecting box 305. Under pressure, the raw material seeps out through the filter holes 203 on the side surface of filter cartridge 201, and impurities are trapped inside filter cartridge 201. The filtered clean raw material enters the housing 1 and is finally discharged through collecting box 305 and connecting pipe 2 306 at the other end, completing the filtration process. When backwashing is required, the device starts a multi-stage cleaning mechanism. First, the feed solenoid valve 1 202 at both ends of the filter cartridge 201 to be cleaned is closed, while solenoid valve 2 303 remains open. The others... The filter cartridge 201 operates normally to ensure continuous filtration. The rotary motor 211 drives the gear 212 to rotate, which in turn rotates the arc plate 207 by meshing with the toothed block 210 inside the arc plate 207. Stable rotation is achieved by the cooperation of the limiting block 208 inside the arc plate 206 and the limiting groove 209 on the side surface of the arc plate 207. The relative position change between the arc plate 207 and the arc plate 206 creates a local high-pressure zone. Combined with the backwashing medium transported by the bend pipe 304, the impurities inside the filter cartridge 201 are impacted from one end. Under the guidance of the water flow and the baffle 204 on the side surface of the filter cartridge 201, the impurities are flushed to the sewage tank 4 on the bottom inner wall of the housing 1 and finally discharged through the sewage pipe 5. By controlling the backwashing sequence of different filter cartridges 201, multi-stage alternating cleaning is achieved.The support frame 6 at the bottom of the housing 1 ensures stable operation of the device and guarantees continuous and efficient overall work.

[0022] In this embodiment, as Figure 1 , Figure 2 and Figure 5 As shown, the connecting assembly 3 also includes a connecting pipe 301, which is located on the top of the housing 1. Several tee pipes 302 are fixedly connected inside the connecting pipe 301. Solenoid valves 303 are fixedly connected to the opposite ends of the tee pipes 302. The backwashing system composed of the connecting pipe 301, the tee pipes 302 and the bend pipe 304 ensures stable flushing distribution and significantly improves the overall working efficiency.

[0023] In this embodiment, as Figure 1 , Figure 2 and Figure 5 As shown, the other end of the solenoid valve 303 is fixedly connected to the bend 304, and the other end of the bend 304 is fixedly connected to the filter cartridge 201.

[0024] In this embodiment, as Figure 1 , Figure 2 and Figure 5 As shown, a collection box 305 is fixedly connected to the inner wall of the opposite side of the box 1, and a number of solenoid valves 202 are fixedly connected to one side of the collection box 305.

[0025] In this embodiment, as Figure 1 , Figure 2 and Figure 5 As shown, a connecting pipe 306 is fixedly connected to the other side of the box 1, and a sewage tank 4 is provided on the bottom inner wall of the box 1.

[0026] In this embodiment, as Figure 1 , Figure 2 and Figure 6 As shown, a drain pipe 5 is fixedly connected to the bottom of the box 1, and a support frame 6 is fixedly connected to the bottom of the box 1.

[0027] The usage and advantages of this utility model: The working process of this multi-stage backwashing device for diesel hydrotreating feedstock is as follows:

[0028] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, during the feedstock filtration stage, the diesel hydrotreating feedstock to be treated enters the unit through connecting pipe 2 306 and is distributed to each filter cartridge 201 via collecting box 305. At this time, solenoid valve 1 202 at both ends of filter cartridge 201 is open, while solenoid valve 2 303 connected to tee pipe 302 is closed. The feedstock flows into the filter cartridge 201 through collecting box 305. Under pressure, the feedstock seeps out through the filter holes 203 on the side surface of filter cartridge 201, and impurities are trapped inside the filter cartridge 201. The filtered clean feedstock enters the housing 1 and is finally discharged through collecting box 305 and connecting pipe 2 306 at the other end, completing the filtration process. When backwashing is required, the unit activates a multi-stage cleaning mechanism. First, the feed solenoid valve 1 202 at both ends of the filter cartridge 201 to be cleaned is closed, while solenoid valve 2 303 remains open. The other filter cartridges 201... 1. Normal operation ensures continuous filtration. The rotary motor 211 drives the gear 212 to rotate. Through meshing with the toothed block 210 inside the arc plate 207, the arc plate 207 rotates. Stable rotation is achieved by the cooperation of the limiting block 208 inside the arc plate 1 and the limiting groove 209 on the side surface of the arc plate 207. The relative position change between the arc plate 207 and the arc plate 1 creates a local high-pressure zone. Combined with the backwashing medium transported by the bend pipe 304, it impacts the internal impurities from one end of the filter cartridge 201. The impurities are flushed to the sewage tank 4 on the bottom inner wall of the box 1 by the water flow and the guiding action of the baffle 204 on the side surface of the filter cartridge 201. Finally, they are discharged through the sewage pipe 5. By controlling the backwashing sequence of different filter cartridges 201, multi-stage alternating cleaning is achieved. The support frame 6 at the bottom of the box 1 ensures stable operation of the device and ensures continuous and efficient operation of the whole.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage backwash device for diesel hydroprocessing feedstocks comprising a housing (1), characterised in that: The housing (1) is equipped with a filter assembly (2), which includes a filter cartridge (201), a solenoid valve (202), a filter eye (203), a partition (204), a fixing plate (205), an arc plate (206), and an arc plate (207). The housing (1) is also equipped with a connecting assembly (3), which includes a three-way pipe (302), a solenoid valve (303), a bend (304), a collection box (305), and a connecting pipe (306). The box (1) is equipped with several filter cylinders (201). Both ends of the filter cylinder (201) are fixedly connected to a solenoid valve (202). Several filter holes (203) are opened on the side surface of the filter cylinder (201). Several partitions (204) are fixedly connected to the side surface of the filter cylinder (201).

2. A multi-stage backwash device for diesel hydroprocessing feedstocks according to claim 1, characterized in that: The filter assembly (2) also includes a fixed plate (205). Two fixed plates (205) are fixedly connected to the side surface of the filter cartridge (201). An arc plate (206) is fixedly connected to one side of the fixed plate (205), and an arc plate (207) is movably connected to one side of the fixed plate (205). The outer diameter of the arc plate (207) is smaller than the inner diameter of the arc plate (206). Several limiting grooves (209) are provided on the side surface of the arc plate (207). Several limiting blocks (208) are fixedly connected inside the arc plate (206). The limiting blocks (208) are adapted to the limiting grooves (209).

3. A multi-stage backwash device for diesel hydroprocessing feedstocks according to claim 1, characterized in that: A rotary motor (211) is fixedly connected inside the fixed disk (205), and a gear (212) is fixedly connected to the transmission end of the rotary motor (211). Several tooth blocks (210) are fixedly connected inside the arc plate (207), and the gear (212) meshes with the several tooth blocks (210).

4. A multi-stage backwash device for diesel hydroprocessing feedstocks according to claim 1, characterized in that: The connecting assembly (3) also includes a connecting pipe (301), which is located on the top of the housing (1). Several tee pipes (302) are fixedly connected inside the connecting pipe (301), and a solenoid valve (303) is fixedly connected to one end of each tee pipe (302) opposite to the other.

5. A multi-stage backwash device for diesel hydroprocessing feedstocks according to claim 1, characterized in that: The other end of the solenoid valve (303) is fixedly connected to a bend (304), and the other end of the bend (304) is fixedly connected to a filter cartridge (201).

6. A multi-stage backwash device for diesel hydroprocessing feedstocks according to claim 1, characterized in that: The inner wall of the opposite side of the box (1) is fixedly connected to a collection box (305), and a number of solenoid valves (202) are fixedly connected to one side of the collection box (305).

7. A multi-stage backwash device for diesel hydroprocessing feedstocks according to claim 1, characterized in that: The other side of the box (1) is fixedly connected to the connecting pipe 2 (306), and the bottom inner wall of the box (1) is provided with a sewage tank (4).

8. A multi-stage backwash device for diesel hydroprocessing feedstocks according to claim 1, characterized in that: The bottom of the box (1) is fixedly connected to a sewage pipe (5), and the bottom of the box (1) is fixedly connected to a support frame (6).

Images