Novel filtering device for liquid-phase furfuryl alcohol

Abstract

The utility model discloses a novel filtering device for liquid-phase furfuryl alcohol, and relates to the related technical field of furfuryl alcohol production. The crude furfuryl alcohol filter comprises a filter shell, an air inlet pipe fitting, a discharging barrel and a crude furfuryl alcohol storage tank, a filter cavity is fixed to one side of the inner wall of the filter shell, the air inlet pipe fitting is fixed to the outer side of the filter cavity and comprises a forward blowing pipe and a reverse blowing pipe, and the center of the top of the filter shell is fixedly communicated with the forward blowing pipe; one side of the filter shell is fixedly communicated with a back flushing pipe, the back flushing pipe penetrates through one side of the filter shell and is fixedly communicated with the filter cavity, the bottom of the filter shell is fixedly communicated with a concentration hopper, the bottom end of the concentration hopper is fixedly communicated with a discharging barrel, and one side of the filter shell is provided with a crude furfuryl alcohol storage tank. Through the arrangement of the filter shell, the air inlet pipe fitting, the discharging barrel and the crude furfuryl alcohol storage tank, the problems that in furfuryl alcohol production, the sealing performance of a filtering catalyst is poor, furfuryl alcohol volatilization is easily caused, and the furfuryl alcohol filtering efficiency is poor are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of furfuryl alcohol production, and in particular relates to a novel liquid-phase furfuryl alcohol filtration device. Background Technology

[0002] Furfuryl alcohol, as an important and versatile organic chemical raw material, can be effectively converted into various high-value chemicals, such as furfuryl alcohol resin, urea-formaldehyde resin, phenolic resin, fruit acids, plasticizers, and rocket fuel. High-pressure liquid-phase hydrogenation is currently the main method used in China for the hydrogenation of furfuryl alcohol to furfuryl alcohol. This method involves suspending the catalyst in furfuryl alcohol and hydrogenating it at medium or high pressure at 180-220 °C. The equipment used is generally a tubular reactor. The resulting furfuryl alcohol has good quality, high yield, few side reactions, and low process cost. However, it still has the following drawbacks in practical use:

[0003] During operation, copper-based catalysts with a particle size of 20-30 μm are prone to spontaneous combustion when exposed to air. Furfuryl alcohol is volatile, flammable, and has an irritating odor. Currently, most manufacturers use centrifuges to separate furfuryl alcohol catalysts, but centrifuge plants are filled with the irritating odor of furfuryl alcohol, resulting in a poor working environment.

[0004] In the production process of furfuryl alcohol, the catalyst particles are screened out by centrifugal filtration of the corresponding furfuryl alcohol. However, during production, only a fixed volume of furfuryl alcohol can be filtered within a certain period of time, resulting in poor continuous operation and affecting the production efficiency of furfuryl alcohol. Utility Model Content

[0005] The purpose of this utility model is to provide a novel liquid-phase furfuryl alcohol filtration device. By setting up a filter shell, an air inlet pipe, a discharge cylinder, and a crude furfuryl alcohol storage tank, it solves the problems of poor sealing of the filtration catalyst in furfuryl alcohol production, which easily causes furfuryl alcohol volatilization and poor filtration efficiency.

[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 novel liquid-phase furfuryl alcohol filtration device, comprising a filter housing, an inlet pipe, a discharge cylinder, and a crude furfuryl alcohol storage tank. A filter chamber is fixed to one side of the inner wall of the filter housing, and an inlet pipe is fixed to the outer side of the filter chamber. The inlet pipe includes a forward-blowing pipe and a reverse-blowing pipe. A forward-blowing pipe is fixedly connected to the center of the top of the filter housing, and a reverse-blowing pipe is fixedly connected to one side of the filter housing. The reverse-blowing pipe passes through one side of the filter housing and is fixedly connected to the filter chamber. The reverse-blowing pipe is fixedly installed inside the filter housing. A collection hopper is fixedly connected to the bottom of the filter housing, and a discharge cylinder is fixedly connected to the bottom of the collection hopper. A crude furfuryl alcohol storage tank is provided on one side of the filter housing. During operation, the filter chamber is fixed inside the filter housing. When operating through the air inlet pipe, nitrogen is pressurized by being blown into the filter housing through the forward blow pipe, so that the furfuryl alcohol in the filter housing is pressurized and transported through the filter chamber to the output pipe. When operating through the discharge cylinder, the accumulated furfuryl alcohol catalyst particles are discharged. When operating through the crude furfuryl alcohol storage tank, the freshly produced furfuryl alcohol is contained in it.

[0008] Furthermore, an output pipe is fixedly connected to the lower part of the filter chamber on the side away from the backflush pipe. The output pipe is fixedly connected to the filter housing on the side away from the backflush pipe. An electric control valve is fixed around the backflush pipe on the outside of the filter housing. When the filter chamber is working, the furfuryl alcohol that has been filtered into it is output to the furfuryl alcohol storage tank through the output pipe. The on / off of the delivery in the output pipe is controlled by the electric control valve.

[0009] Furthermore, the air intake pipe also includes a three-way pipe and an electrically controlled valve II. Both the forward blow pipe and the reverse blow pipe are L-shaped. The ends of the forward blow pipe and the reverse blow pipe away from the filter housing are fixedly connected to the three-way pipe. The two electrically controlled valves are fixed on the outer side of the vertical part of the forward blow pipe and the reverse blow pipe. When the air intake pipe is working, it is connected to the external equipment for supplying high-pressure nitrogen through the three-way pipe, and the nitrogen supply switch of the forward blow pipe and the reverse blow pipe is controlled by the electrically controlled valve II.

[0010] Furthermore, a connecting port is provided at the center of the top of the discharge cylinder, which is connected to the collection hopper. A rotary valve is fixed in the middle of the periphery of the discharge cylinder. When the discharge cylinder is working, it is connected to the collection hopper through the connecting port, and the conveying of the discharge cylinder is controlled by the rotary valve.

[0011] Furthermore, a feed pipe is fixedly connected to the center of the top of the crude furfuryl alcohol storage tank, and a transfer pipe is fixedly connected to the lower periphery of the crude furfuryl alcohol storage tank. A diaphragm pump is fixedly connected to the end of the transfer pipe away from the crude furfuryl alcohol storage tank, so that when working, the diaphragm pump is started to extract the crude furfuryl alcohol in the crude furfuryl alcohol storage tank from the transfer pipe.

[0012] Furthermore, the output end of the diaphragm pump is fixedly connected to an infusion tube, and the end of the infusion tube away from the diaphragm pump is fixedly connected to the filter housing. The infusion tube is located below the filter chamber. After the diaphragm pump extracts crude furfuryl alcohol, it is delivered into the infusion tube and then delivered to the lower part of the filter housing through the infusion tube.

[0013] This utility model has the following beneficial effects:

[0014] This invention solves the problem of poor sealing of the filter catalyst and easy volatilization of furfuryl alcohol in production by setting up a filter shell, discharge cylinder, and crude furfuryl alcohol storage tank. The crude furfuryl alcohol produced is transported into the filter shell through the feed pipe. Then, the crude furfuryl alcohol in the storage tank is transported to the transfer pipe by starting the diaphragm pump. The transfer pipe is then transported to the diaphragm pump, which pumps the crude furfuryl alcohol into the delivery pipe. The delivery pipe then transports the crude furfuryl alcohol liquid to the lower part of the filter shell. This causes the crude furfuryl alcohol entering the filter shell to rise continuously, while impurities in the furfuryl alcohol settle and are filtered by the filter chamber. The liquid is then discharged into the furfuryl alcohol storage tank through the output pipe, realizing a closed-loop filtration operation for furfuryl alcohol. This results in better sealing of the filter catalyst in the production of furfuryl alcohol and less furfuryl alcohol volatilization into the environment.

[0015] This invention solves the problem of poor furfuryl alcohol filtration efficiency in production by setting up a filter housing and an air inlet pipe. A diaphragm pump pumps furfuryl alcohol from the crude furfuryl alcohol storage tank into the filter housing. Then, the first solenoid valve and the second solenoid valve on the forward blow pipe are opened. Nitrogen gas is then delivered through a three-way pipe to the forward blow pipe, and then to the filter housing, pressurizing it. This pressurizes the furfuryl alcohol, which is then delivered to the output pipe and output to the connected furfuryl alcohol storage tank. After a certain period of operation, the second solenoid valve on the forward blow pipe is closed, and the second solenoid valve on the backflush pipe is opened. Simultaneously, the first solenoid valve is closed. High-pressure nitrogen gas is then delivered through the three-way pipe to the backflush pipe, and then to the filter chamber, filling the filter chamber. The high-pressure nitrogen blows away the furfuryl alcohol catalyst particles adhering to the surface of the filter chamber, completing surface cleaning, allowing furfuryl alcohol filtration to continue. This results in better continuity and higher filtration efficiency for furfuryl alcohol filtration. Attached Figure Description

[0016] 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. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional view of the assembly structure of a novel liquid-phase furfuryl alcohol filtration device;

[0018] Figure 2 This is a three-dimensional view of a half-section of the filter housing.

[0019] Figure 3 This is a 3D view of the intake manifold structure.

[0020] Figure 4 This is a 3D view of the discharge cylinder structure;

[0021] Figure 5 This is a three-dimensional structural diagram of a crude furfuryl alcohol storage tank.

[0022] Figure label:

[0023] 1. Filter housing; 101. Filter chamber; 102. Output pipe; 103. Solenoid valve one; 104. Concentrated hopper; 2. Air inlet fittings; 201. T-connector; 202. Forward blow pipe; 203. Backflush pipe; 204. Solenoid valve two; 3. Discharge cylinder; 301. Connecting port; 302. Rotary valve; 4. Crude furfuryl alcohol storage tank; 401. Feed pipe; 402. Transfer pipe; 403. Diaphragm pump; 404. Infusion pipe. Detailed Implementation

[0024] 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. Specific Implementation Example 1

[0025] Please see Figure 1-4This utility model relates to a novel liquid-phase furfuryl alcohol filtration device, comprising a filter housing 1, an inlet pipe 2, a discharge cylinder 3, and a crude furfuryl alcohol storage tank 4. A filter chamber 101 is fixed to one side of the inner wall of the filter housing 1. During operation, the crude furfuryl alcohol liquid entering the filter housing 1 is filtered through the filter chamber 101. An inlet pipe 2 is fixed to the outer side of the filter chamber 101, through which nitrogen gas is supplied to the filter housing 1. The inlet pipe 2 includes a forward blow pipe 202 and a reverse blow pipe 203. The forward blow pipe 202 is fixedly connected to the center of the top of the filter housing 1, and the reverse blow pipe 203 is fixedly connected to one side of the filter housing 1. The reverse blow pipe 203 extends through... A backflush pipe 203 passes through one side of the filter housing 1 and is fixedly connected to the filter chamber 101. During operation, nitrogen gas is delivered to the filter housing 1 through the forward blow pipe 202 to pressurize the filter housing 1. When the filter housing 1 is pressurized, liquid furfuryl alcohol is squeezed into the filter housing 1. A collection hopper 104 is fixedly connected to the bottom of the filter housing 1. A discharge cylinder 3 is fixedly connected to the bottom end of the collection hopper 104. The furfuryl alcohol catalyst collected in the filter housing 1 is collected through the collection hopper 104 and discharged through the discharge cylinder 3. A crude furfuryl alcohol storage tank 4 is provided on one side of the filter housing 1 to contain crude furfuryl alcohol.

[0026] Specifically, an output pipe 102 is fixedly connected to the lower part of the side of the filter chamber 101 away from the backflush pipe 203. The output pipe 102 is fixedly connected to the side of the filter housing 1 away from the backflush pipe 203. An electric control valve 103 is fixed around the backflush pipe on the outside of the filter housing 1. When the filter chamber 101 is working, the end of the output pipe 102 away from the filter housing 1 is connected to the equipment for collecting purified furfuryl alcohol, and the air in the reactor housing is discharged through the output pipe 102.

[0027] Furthermore, the intake pipe 2 also includes a three-way pipe 201 and an electric control valve 204. The forward blow pipe 202 and the reverse blow pipe 203 are both L-shaped. The ends of the forward blow pipe 202 and the reverse blow pipe 203 away from the filter housing 1 are fixedly connected to the three-way pipe 201. The outer side of the vertical part of the forward blow pipe 202 and the reverse blow pipe 203 are both fixedly equipped with the electric control valve 204. The intake pipe 2 is fixedly connected to the pipeline for conveying high-pressure nitrogen through the three-way pipe 201, and the conveying of the forward blow pipe 202 and the reverse blow pipe 203 is controlled by the electric control valve 204.

[0028] Furthermore, a connecting port 301 is provided at the center of the top of the discharge cylinder 3, and the bottom of the discharge cylinder 3 is connected to the equipment for collecting copper-based catalysts. The connecting port 301 is connected to the collection hopper 104. A rotary valve 302 is fixed in the middle of the periphery of the discharge cylinder 3. When the discharge cylinder 3 is working, it is connected to the collection hopper 104 through the connecting port 301. The rotary valve 302 is rotated to open and close during operation to control the conveying of the discharge cylinder 3.

[0029] The operation process of this embodiment is as follows: During operation, the diaphragm pump 403 pumps the furfuryl alcohol in the crude furfuryl alcohol storage tank 4 into the filter housing 1. Then, the solenoid valve 103 and the solenoid valve 204 on the positive blow pipe 202 are opened. At this time, nitrogen gas is delivered to the positive blow pipe 202 through the three-way pipe 201, and then to the filter housing 1 through the positive blow pipe 202, pressurizing the filter housing 1. This causes the furfuryl alcohol inside to be pressurized and delivered to the output pipe 102, and then output to the furfuryl alcohol connected to it through the output pipe 102. In the storage tank, after working for a certain period of time, close the second electric control valve 204 on the forward blow pipe 202, open the second electric control valve 204 on the backflush pipe 203, and close the first electric control valve 103 at the same time. At this time, high-pressure nitrogen is delivered to the backflush pipe 203 through the three-way pipe 201, and then to the filter chamber 101 through the backflush pipe 203 to purge the filter chamber 101. The furfuryl alcohol catalyst particles attached to the surface of the filter chamber 101 are blown away by the high-pressure nitrogen, completing the surface cleaning, and the furfuryl alcohol filtration process can continue. Specific Implementation Example 2

[0030] Please see Figure 1-5 Based on the first specific embodiment, a feed pipe 401 is fixedly connected to the center of the top of the crude furfuryl alcohol storage tank 4. The top of the feed pipe 401 is connected to the equipment for producing crude furfuryl alcohol. A transfer pipe 402 is fixedly connected to the lower periphery of the crude furfuryl alcohol storage tank 4. A diaphragm pump 403 is fixedly connected to the end of the transfer pipe 402 away from the crude furfuryl alcohol storage tank 4. When the crude furfuryl alcohol storage tank 4 is working, the crude furfuryl alcohol produced is transported into it through the feed pipe 401. Then, by starting the diaphragm pump 403, the crude furfuryl alcohol in the crude furfuryl alcohol storage tank 4 is transported into the transfer pipe 402 and then into the diaphragm pump 403.

[0031] Specifically, the output end of the diaphragm pump 403 is fixedly connected to the infusion tube 404. The end of the infusion tube 404 away from the diaphragm pump 403 is fixedly connected to the filter housing 1. The infusion tube 404 is located below the filter chamber 101. The diaphragm pump 403 pumps crude furfuryl alcohol into the infusion tube 404, and the crude furfuryl alcohol liquid is transported to the lower part of the filter housing 1 through the infusion tube 404, so that the crude furfuryl alcohol entering the filter housing 1 rises continuously, the impurities in the furfuryl alcohol settle down, and are filtered by the filter chamber 101.

[0032] The operation process of this embodiment is as follows: the produced crude furfuryl alcohol is transported into the feed pipe 401, and then the diaphragm pump 403 is started to transport the crude furfuryl alcohol in the crude furfuryl alcohol storage tank 4 to the transfer pipe 402. The transfer pipe 402 is then transported to the diaphragm pump 403, and the diaphragm pump 403 pumps the crude furfuryl alcohol into the delivery pipe 404. The delivery pipe 404 transports the crude furfuryl alcohol liquid to the lower part of the filter housing 1, so that the crude furfuryl alcohol entering the filter housing 1 rises continuously, the impurities in the furfuryl alcohol settle down and are filtered by the filter chamber 101, and is output to the furfuryl alcohol storage tank through the output pipe 102, realizing the closed-loop filtration operation of furfuryl alcohol.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A novel liquid-phase furfuryl alcohol filtration device, comprising a filter housing (1), an inlet pipe (2), a discharge cylinder (3), and a crude furfuryl alcohol storage tank (4), characterized in that: A filter chamber (101) is fixed on one side of the inner wall of the filter housing (1). An air inlet pipe (2) is fixed on the outer side of the filter chamber (101). The air inlet pipe (2) includes a forward blow pipe (202) and a reverse blow pipe (203). The forward blow pipe (202) is fixedly connected to the center of the top of the filter housing (1). The reverse blow pipe (203) is fixedly connected to one side of the filter housing (1). The reverse blow pipe (203) passes through one side of the filter housing (1) and is fixedly connected to the filter chamber (101). The reverse blow pipe (203) is fixedly connected inside the filter housing (1). A collection hopper (104) is fixedly connected to the bottom of the filter housing (1). A discharge cylinder (3) is fixedly connected to the bottom end of the collection hopper (104). A crude furfuryl alcohol storage tank (4) is provided on one side of the filter housing (1).

2. The novel liquid-phase furfuryl alcohol filtration device according to claim 1, characterized in that: The lower part of the filter chamber (101) away from the backflush pipe (203) is fixedly connected to the output pipe (102). The output pipe (102) is fixedly connected to the filter housing (1) away from the backflush pipe (203). An electric control valve (103) is fixed around the backflush pipe on the outside of the filter housing (1).

3. The novel liquid-phase furfuryl alcohol filtration device according to claim 1, characterized in that: The intake pipe (2) also includes a three-way pipe (201) and an electric control valve (204). The forward blow pipe (202) and the reverse blow pipe (203) are both L-shaped. The ends of the forward blow pipe (202) and the reverse blow pipe (203) away from the filter housing (1) are fixedly connected to the three-way pipe (201). The outer side of the vertical part of the forward blow pipe (202) and the reverse blow pipe (203) are both fixed with the electric control valve (204).

4. The novel liquid-phase furfuryl alcohol filtration device according to claim 1, characterized in that: The top center of the discharge cylinder (3) is provided with a connecting port (301), which is connected to the collection hopper (104). A rotary valve (302) is fixed in the middle of the periphery of the discharge cylinder (3).

5. A novel liquid-phase furfuryl alcohol filtration device according to claim 1, characterized in that: The top center of the crude furfuryl alcohol storage tank (4) is fixedly connected to a feed pipe (401), and the lower part of the periphery of the crude furfuryl alcohol storage tank (4) is fixedly connected to a transfer pipe (402). The end of the transfer pipe (402) away from the crude furfuryl alcohol storage tank (4) is fixedly connected to a diaphragm pump (403).

6. A novel liquid-phase furfuryl alcohol filtration device according to claim 5, characterized in that: The output end of the diaphragm pump (403) is fixedly connected to the infusion tube (404), and the end of the infusion tube (404) away from the diaphragm pump (403) is fixedly connected to the filter housing (1). The infusion tube (404) is located below the filter chamber (101).

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