Gravity settling type furfuryl alcohol catalyst filtering device

Abstract

The utility model discloses a gravity settling type furfuryl alcohol catalyst filtering device and relates to the related technical field of furfural production. The device comprises a filter box, an overflow control plate, a sedimentation hopper and a material plate, two partition plates which are symmetrically distributed are fixed at the upper part of an inner cavity of the filter box, and porous distributors which are distributed at equal intervals up and down are jointly fixed between the opposite surfaces of the two partition plates; an upper group of material plates and a lower group of material plates which are obliquely arranged are fixed in the inner cavity of the filter box below the porous distributor; a settling hopper is fixed at the bottom end of the filter box, and low-frequency vibrators are fixed on two inclined side walls outside the settling hopper; and a pneumatic slag discharge valve is arranged outside the slag discharge port. Through the arrangement of the filter box, the porous distributor, the material plate, the settling hopper, the filter box, the overflow control plate, the low-frequency vibrator, the slag discharge port and the pneumatic slag discharge valve, the problems that centrifugal separation is long in time, large in energy consumption and high in cost, and centrifugal separation is small in amount, troublesome in slag discharge, long in treatment time and low in efficiency are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of furfural production, and in particular relates to a gravity settling type furfural catalyst filtration device. Background Technology

[0002] Furfuryl alcohol, with the chemical formula C5H6O2, is a colorless to pale yellow transparent liquid. It is a chemical and light industrial raw material, mainly used in the production of furan resins, dyes, synthetic resins, solvents, and preservatives. The production of furfuryl alcohol requires the addition of a catalyst, resulting in the presence of a solid catalyst in the reaction solution. This catalyst content reduces the yield of the final product, necessitating the separation of the catalyst using a separation device. However, the following drawbacks exist in the relevant separation operations:

[0003] Currently, the separation device in the furfuryl alcohol production process mainly uses high-speed centrifugation to separate the catalyst. The centrifugation time is long and the energy consumption is high. In order to ensure the separation effect, the centrifuge filter cloth needs to be replaced frequently, which is costly.

[0004] Secondly, centrifugal separation requires high-speed operation, can only separate a small amount each time, and the slag removal after separation is also quite troublesome, which delays a lot of processing time and requires frequent manual operation, so the overall efficiency is not very high. Utility Model Content

[0005] The purpose of this utility model is to provide a gravity settling type furfuryl alcohol catalyst filtration device. By setting up a filter box, a porous distributor, a material plate, a settling hopper, an overflow control plate, a low-frequency vibrator, a slag discharge port, and a pneumatic slag discharge valve, it solves the problems of long time, high energy consumption, high cost, small amount of slag separation, troublesome slag discharge, long processing time, and low efficiency of centrifugal separation.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a gravity settling type furfuryl alcohol catalyst filtration device, comprising a filter box, an overflow control plate, a settling hopper, and material plates. Two symmetrically distributed partitions are fixed to the upper part of the filter box's inner cavity, and a porous distributor with equal vertical spacing is fixed between the opposing surfaces of the two partitions. Two sets of inclined material plates are fixed to the inner cavity of the filter box below the porous distributor. An overflow control plate is inserted into the side wall of the filter box.

[0008] A settling hopper is fixed to the bottom of the filter box, a slag discharge port is fixed to the bottom of the settling hopper, a transparent observation window is fixed to the front side of the settling hopper, and low-frequency vibrators are fixed to the two inclined side walls outside the settling hopper; a pneumatic slag discharge valve is provided outside the slag discharge port.

[0009] Furthermore, a cover is fixed to the upper end of the filter box, a feed pipe is fixed through the top of the cover, a flow control valve is fixed on the feed pipe, and equidistant air grooves are opened through the two inclined side walls of the cover.

[0010] Furthermore, the two sides of the porous distributor adjacent to the partition are fixedly connected to the inner sidewall of the filter box, and the porous distributor has equidistant through holes, and the through holes in two adjacent porous distributors are staggered.

[0011] Furthermore, the material plate is inclined at an angle of 60° to the horizontal plane, and the upper and lower sets of material plates are inclined in opposite directions.

[0012] Furthermore, the pneumatic slag discharge valve includes a U-shaped bracket fixed outside the slag discharge port, a cylinder fixed at the outer end of the bracket, a piston rod at the telescopic end of the cylinder extending into the inner side of the bracket and fixed to a base block, and the pneumatic slag discharge valve also includes a valve plate inserted through the slag discharge port, with one side of the valve plate extending out of the slag discharge port and fixed to the base block.

[0013] Furthermore, a limiting groove is formed in one side wall of the filter box, and through grooves are formed on both sides of the upper part of the limiting groove. An overflow control plate is inserted into the limiting groove.

[0014] Furthermore, an inclined overflow channel is fixed to the upper end of the overflow control plate, and an inverted U-shaped rod is fixed to the upper end of the overflow control plate on both sides of the overflow channel. A limit ball is fixed to the upper part of the vertical part of the U-shaped rod, and the limit ball is located above the filter box. A U-shaped limit block is inserted into the U-shaped rod below the limit ball, and the limit block is placed on the upper end of the filter box above the limit groove.

[0015] This utility model has the following beneficial effects:

[0016] This invention solves the problems of long time, high energy consumption, and high cost associated with centrifugal separation by setting up a filter box, porous distributors, material plates, and a settling hopper. It changes the conventional centrifugal filtration process by adopting gravity settling. The furfural solution to be filtered is introduced into the filter box through a feed pipe, and the liquid is redirected and evenly distributed by numerous porous distributors, reducing feed turbulence and ensuring uniform liquid entry into the settling zone. Two sets of multi-layer material plates are inclined to increase the effective settling area of ​​the settling chamber and shorten the settling path of catalyst particles. A transparent observation window equipped with a liquid level gauge is provided to monitor the settling interface and solid accumulation in real time. A solid-liquid separation zone, i.e., a settling hopper, is set below the settling separation zone. Solid sediment enters the settling hopper along the inclined plate and is discharged from the slag outlet after a certain period. The entire system requires no external power, relying on natural gravity settling, resulting in low operating costs. It is suitable for high solid content, processing slurries with a solid content of 2-17%; particle removal rate ≥95% (particle size >50μm); and energy consumption <0.1 kilowatt-hours. kWh / m³; easy to maintain, no filter cloth or precision filter element required, suitable for catalyst separation containing viscous substances.

[0017] This invention solves the problems of low throughput, cumbersome slag discharge, time-consuming processing, and low efficiency associated with centrifugal separation by incorporating a filter box, overflow control plate, low-frequency vibrator, slag discharge port, and pneumatic slag discharge valve. After settling in the sedimentation hopper, the lower layer consists of sediment, while the area above the material plate is mostly clear liquid. By controlling the height of the overflow control plate, the clear liquid can be discharged. Subsequently, the slag discharge port can be opened via the pneumatic slag discharge valve to allow the precipitated solids to be discharged. Combined with the vibration of the low-frequency vibrator, this facilitates rapid slag discharge and prevents particle bridging from clogging the slag discharge port. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 A perspective view of a gravity settling type furfuryl alcohol catalyst filtration device;

[0020] Figure 2 A cross-sectional view of a gravity settling type furfuryl alcohol catalyst filtration device;

[0021] Figure 3 A front view of a gravity settling type furfuryl alcohol catalyst filtration device;

[0022] Figure 4 This is a connection diagram of the slag discharge port and the pneumatic slag discharge valve.

[0023] Figure 5 This is a cross-sectional view of the filter box;

[0024] Figure 6 for Figure 5Enlarged view of the structure at point A in the image;

[0025] Figure 7 This is a structural diagram of the overflow control board.

[0026] Figure label:

[0027] 1. Filter box; 101. Partition plate; 102. Porous distributor; 1021. Through hole; 103. Limiting groove; 1031. Through groove; 2. Cover; 201. Air groove; 202. Feed pipe; 203. Flow control valve; 3. Overflow control plate; 301. Overflow channel; 302. U-shaped rod; 3021. Limiting ball; 303. Limiting block; 4. Settling hopper; 401. Transparent observation window; 5. Low frequency vibrator; 6. Slag discharge port; 7. Pneumatic slag discharge valve; 701. Support; 702. Cylinder; 703. Valve plate; 704. Base block; 8. Material plate. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] Please see Figure 1-7 As shown, this utility model is a gravity settling type furfuryl alcohol catalyst filtration device, including a filter box 1, an overflow control plate 3, a settling hopper 4, and a material plate 8. Two symmetrically distributed partitions 101 are fixed in the upper part of the inner cavity of the filter box 1, and a porous distributor 102 with equal vertical spacing is fixed between the opposite surfaces of the two partitions 101.

[0030] A cover 2 is fixed to the upper end of the filter box 1. A feed pipe 202 is fixed through the top of the cover 2. A flow control valve 203 is fixed on the feed pipe 202. Air grooves 201 are evenly distributed and opened through the two inclined side walls of the cover 2.

[0031] The two sides of the porous distributor 102 and the partition plate 101 are respectively fixedly connected to the inner side wall of the filter box 1. The porous distributor 102 has through holes 1021 that are evenly distributed, and the through holes 1021 in two adjacent porous distributors 102 are staggered; that is, the through holes 1021 at the top and bottom are not on the same straight line.

[0032] A section is isolated inside the filter box 1 by a partition 101. Multiple porous distributors 102 are installed between the two partitions 101 and distributed vertically. The furfural solution to be filtered is introduced into the filter box 1 through the feed pipe 202. A flow control valve 203 is set to adjust the feed speed to avoid disturbing the settling area due to excessive flow rate and to ensure that the material enters the settling and separation area at a stable flow rate. Subsequently, the liquid passes through the porous distributor 102 and is evenly distributed through a large number of through holes 1021 on its surface, which reduces feed turbulence. The staggered through holes 1021 can slow down the discharge speed and reduce disturbance.

[0033] Two sets of inclined material plates 8 are fixed in the inner cavity of the filter box 1 below the porous distributor 102; the inclination angle of the material plates 8 with the horizontal plane is 60°, and the inclination directions of the upper and lower sets of material plates 8 are opposite; the two sets of multi-layer material plates 8 are inclined to increase the effective settling area of ​​the settling chamber and shorten the settling path of the catalyst particles.

[0034] An overflow control plate 3 is inserted into the side wall of the filter box 1;

[0035] A settling hopper 4 is fixed at the bottom of the filter box 1. A slag discharge port 6 is fixed at the bottom of the settling hopper 4. A transparent observation window 401 is fixed at the front of the settling hopper 4. Low-frequency vibrators 5 are fixed on the two inclined side walls outside the settling hopper 4. A pneumatic slag discharge valve 7 is installed outside the slag discharge port 6.

[0036] A solid-liquid separation zone, namely settling hopper 4, is set below the settling separation zone. Solid sediments enter the settling hopper 4 along the material plate 8 and are discharged from the slag discharge port 6 after a certain period of time. The whole process does not require external power and relies on gravity to settle naturally.

[0037] The pneumatic slag discharge valve 7 includes a U-shaped bracket 701 fixed outside the slag discharge port 6. A cylinder 702 is fixed to the outer end of the bracket 701. The piston rod of the telescopic end of the cylinder 702 extends into the inner side of the bracket 701 and is fixed to a base block 704. The pneumatic slag discharge valve 7 also includes a valve plate 703 that penetrates and is inserted into the slag discharge port 6. One side of the valve plate 703 extends out of the slag discharge port 6 and is fixed to the base block 704.

[0038] During slag discharge, the cylinder 702 on the end face of the support 701 operates, pulling the valve plate 703 out of the slag discharge port 6. At this time, the settled solids will be discharged from the slag discharge port 6. Simultaneously, the low-frequency vibrator 5 will vibrate to facilitate rapid slag discharge and prevent particle bridging from clogging the slag discharge port 6.

[0039] A limiting groove 103 is provided in one side wall of the filter box 1. Through grooves 1031 are provided on both sides of the upper part of the limiting groove 103. An overflow control plate 3 is inserted into the limiting groove 103.

[0040] An inclined overflow channel 301 is fixed to the upper end of the overflow control plate 3. An inverted U-shaped rod 302 is fixed to the upper end of the overflow control plate 3 on both sides of the overflow channel 301. A limit ball 3021 is fixed to the upper part of the vertical part of the U-shaped rod 302, and the limit ball 3021 is located above the filter box 1. A U-shaped limit block 303 is inserted into the U-shaped rod 302 below the limit ball 3021, and the limit block 303 is placed on the upper end of the filter box 1 above the limit groove 103.

[0041] The overflow control plate 3 is inserted into the limiting groove 103. The through grooves 1031 on both sides are designed to form a passage inside and outside the filter box 1, which facilitates the discharge of clarified liquid. Pulling the U-shaped rod 302 moves the overflow control plate 3 and changes its height. Then, an appropriate number of limiting blocks 303 are placed on the upper end of the filter box 1 and support the limiting ball 3021, so that the limiting ball 3021 has a certain height, thereby changing the height of the overflow control plate 3 and the overflow channel 301, which can be easily adjusted according to the height of the clarified liquid. After settling in the settling hopper 4, the lower layer is sediment, and the area above the material plate 8 is mostly clarified liquid. At this time, by controlling the height of the overflow control plate 3, the clarified liquid is discharged from the overflow channel 301.

[0042] The specific working principle of this utility model is as follows: First, the furfural solution to be filtered is introduced into the filter box 1 through the feed pipe 202. A flow control valve 203 is set to adjust the feed speed. The liquid passes through the porous distributor 102 and is evenly distributed through a large number of through holes 1021 on its surface, reducing feed turbulence. Then it enters the material plate 8 area, i.e., the settling chamber. The two sets of multi-layer material plates 8 are set at an angle to increase the effective settling area of ​​the settling chamber and shorten the settling path of the catalyst particles. Subsequently, the solid sediment enters the settling hopper 4 along the material plate 8 to settle. The settling interface and solid accumulation are monitored through the transparent observation window 401. Finally, after a certain period of time, the sediment needs to be discharged. After the material settles in the settling hopper 4, the lower layer is sediment, and the area above the material plate 8 is mostly clear liquid. At this time, first pull the U-shaped rod 302 to move the overflow control plate 3 and change its height. Then, select an appropriate number of limit blocks 303 to place on the upper end of the filter box 1 and support the limit ball 3021 so that the limit ball 3021 has a certain height. Adjust according to the height of the clear liquid to discharge the clear liquid from the overflow channel 301. Then, the slag is discharged. The cylinder 702 on the end face of the bracket 701 works to pull the valve plate 703 out of the slag discharge port 6. At this time, the settled solids will be discharged from the slag discharge port 6. At the same time, the low frequency vibrator 5 will vibrate to carry out the rapid slag discharge operation.

[0043] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A gravity settling type furfuryl alcohol catalyst filtration device, comprising a filter box (1), an overflow control plate (3), a settling hopper (4), and a material plate (8), characterized in that: The upper part of the inner cavity of the filter box (1) is fixed with two symmetrically distributed partitions (101), and a multi-hole distributor (102) is fixed between the opposite surfaces of the two partitions (101) at equal intervals; two sets of inclined material plates (8) are fixed in the inner cavity of the filter box (1) below the multi-hole distributor (102); an overflow control plate (3) is inserted into the side wall of the filter box (1). The bottom of the filter box (1) is fixed with a settling hopper (4), the bottom of the settling hopper (4) is fixed with a slag discharge port (6), the front side of the settling hopper (4) is fixed with a transparent observation window (401), and low frequency vibrators (5) are fixed on the two inclined side walls outside the settling hopper (4); a pneumatic slag discharge valve (7) is provided outside the slag discharge port (6).

2. The gravity settling type furfuryl alcohol catalyst filtration device according to claim 1, characterized in that: The filter box (1) is fixed with a cover (2) at the top. A feed pipe (202) is fixed through the top of the cover (2). A flow control valve (203) is fixed on the feed pipe (202). The cover (2) has two inclined side walls with equally spaced air grooves (201) through it.

3. The gravity settling type furfuryl alcohol catalyst filtration device according to claim 1, characterized in that: The two sides of the porous distributor (102) adjacent to the partition (101) are fixedly connected to the inner sidewall of the filter box (1), and the porous distributor (102) is provided with equidistant through holes (1021), and the through holes (1021) in two adjacent porous distributors (102) are staggered.

4. The gravity settling type furfuryl alcohol catalyst filtration device according to claim 1, characterized in that: The material plate (8) is inclined at an angle of 60° to the horizontal plane, and the upper and lower material plates (8) are inclined in opposite directions.

5. The gravity settling type furfuryl alcohol catalyst filtration device according to claim 1, characterized in that: The pneumatic slag discharge valve (7) includes a U-shaped bracket (701) fixed outside the slag discharge port (6). A cylinder (702) is fixed at the outer end of the bracket (701). The piston rod of the telescopic end of the cylinder (702) extends into the inner side of the bracket (701) and is fixed with a base block (704). The pneumatic slag discharge valve (7) also includes a valve plate (703) that penetrates and is inserted into the slag discharge port (6). One side of the valve plate (703) extends out of the slag discharge port (6) and is fixed with the base block (704).

6. The gravity settling type furfuryl alcohol catalyst filtration device according to claim 1, characterized in that: A limiting groove (103) is provided in one side wall of the filter box (1), and through grooves (1031) are provided on both sides of the upper part of the limiting groove (103). An overflow control plate (3) is inserted into the limiting groove (103).

7. A gravity settling type furfuryl alcohol catalyst filtration device according to claim 6, characterized in that: An inclined overflow channel (301) is fixed at the upper end of the overflow control plate (3). An inverted U-shaped rod (302) is fixed at the upper end of the overflow control plate (3) on both sides of the overflow channel (301). A limit ball (3021) is fixed at the upper part of the vertical part of the U-shaped rod (302), and the limit ball (3021) is located above the filter box (1). A U-shaped limit block (303) is inserted into the U-shaped rod (302) below the limit ball (3021), and the limit block (303) is placed at the upper end of the filter box (1) above the limit groove (103).

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