Deslagging device for furfural production

Abstract

The utility model discloses a furfural production deslagging device which comprises a hydrolysis kettle, a waste gas treatment mechanism, a solid-liquid separation mechanism and a stirring heating mechanism, a waste gas buffer tank is arranged beside one side of the hydrolysis kettle, a waste gas treatment box is fixedly arranged on one side of the waste gas buffer tank, and a combustion bin is arranged on the lower portion in the waste gas treatment box. A gas tank is fixedly arranged on the other side of the waste gas buffer tank, an igniter is fixedly arranged in the combustion bin, a gas pipe is arranged between the igniter and the gas tank in a communicating mode, an activated carbon filter element is inserted into the upper portion in the waste gas treatment box, a solid-liquid separation mechanism is arranged below the hydrolysis kettle in a communicating mode, and a stirring and heating mechanism is arranged in the hydrolysis kettle. Waste gas is collected in a centralized mode through the waste gas buffer tank, then the igniter burns and purifies the waste gas in the combustion bin, then the waste gas is filtered through the activated carbon filter element, the waste gas is effectively purified, and the first motor drives the conical extrusion shaft to rotate in the hollowed-out filter pressing cylinder to be matched with the hollowed-out filter pressing cylinder to convey waste residues and extrude the waste residues at the same time. And the waste liquid is pressed out from the hollow filter pressing cylinder to realize solid-liquid separation.

Description

Technical Field

[0001] The utility model relates to the technical field of furfural production and processing equipment, in particular to a furfural production slag discharge device. Background Art

[0002] Furfural is an important organic chemical raw material, widely used in medicine, pesticides, spices, dyes and other fields. In the production process of furfural, a large amount of waste residue is generated. The waste residue is generally high-temperature wet aldehyde residue. These waste residues contain organic pollutants such as sulfuric acid and acetic acid, and the residues formed by the incomplete conversion of cellulose, hemicellulose and lignin in the raw materials after hydrolysis under high temperature and high pressure. If these waste residues are not handled properly, they will cause serious pollution to the environment;

[0003] The application number 202321825604.0 discloses a slag discharge device for furfural hydrolysis kettle production, which drives the hollow shaft to rotate through a motor, prompting the staggered stirring rollers to mix the materials and improve the hydrolysis effect. The rotating plate is driven to rotate through the hollow shaft, and the scraper can clean the inner wall of the kettle body. At the same time, the water in the water tank can be transported to the nozzle to wash the inner wall of the kettle body. The slag discharge is thorough and convenient for cleaning the inside of the kettle body. The spiral feeding shaft is connected with the discharge pipe, so that the purpose of quickly discharging the residue can be achieved, and the discharge port extends out of the kettle body, which is convenient for collecting and transporting the residue.

[0004] However, the above-mentioned furfural production slag discharge equipment lacks effective treatment for waste gas generated in the furfural production process. The waste gas will be directly discharged through the feed pipe, which may easily cause serious pollution to the environment. The above-mentioned furfural production slag discharge equipment lacks effective treatment for waste water. The waste water will be discharged along the spiral feeding pipe along with the waste slag. It is impossible to effectively separate the solid waste slag and liquid generated in the production, which is inconvenient for subsequent treatment and resource recovery. Therefore, the utility model proposes a furfural production slag discharge device to solve the problems existing in the prior art. Utility Model Content

[0005] In view of the above problems, the purpose of the utility model is to propose a furfural production slag discharge device, which collects waste gas through a waste gas buffer tank, and then uses an igniter to burn and purify the waste gas in a combustion chamber, and then filters it through an activated carbon filter element, thereby effectively purifying the waste gas during production, solving the problem that direct discharge of waste gas is prone to pollute the environment. The conical extrusion shaft is driven by a first motor to rotate in the hollow filter press cartridge and cooperate with the hollow filter press cartridge to transport the waste slag and extrude it at the same time, and the waste liquid is pressed out of the hollow filter press cartridge to achieve solid-liquid separation, which is convenient for subsequent processing and resource recovery.

[0006] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a furfural production slag discharge device, including a hydrolysis kettle, a waste gas treatment mechanism, a solid-liquid separation mechanism and a stirring and heating mechanism, the waste gas treatment mechanism including a waste gas buffer tank, a waste gas treatment box, a combustion bin, a gas tank, an igniter, a gas pipe and an activated carbon filter element, a waste gas buffer tank is arranged next to one side of the hydrolysis kettle, a waste gas treatment box is fixedly arranged on one side of the waste gas buffer tank, a combustion bin is arranged at the bottom of the waste gas treatment box, a gas tank is fixedly arranged on the other side of the waste gas buffer tank, an igniter is fixedly arranged in the combustion bin, a gas pipe is connected between the igniter and the gas tank, an activated carbon filter element is inserted in the upper part of the waste gas treatment box, a solid-liquid separation mechanism is connected to the lower part of the hydrolysis kettle, and a stirring and heating mechanism is arranged in the hydrolysis kettle.

[0007] A further improvement is that: the waste gas buffer tank is connected to the hydrolysis kettle through a pipeline, the waste gas treatment box is connected to the waste gas buffer tank, and the waste gas treatment box has an opening on the top.

[0008] Further improvements are as follows: the solid-liquid separation mechanism includes a separation bin, a hollow filter press, a conical extrusion shaft, a first motor, a discharge port, a waste slag box and a waste liquid tank; a separation bin is fixedly provided below the hydrolysis kettle; a hollow filter press is fixedly provided inside the separation bin; a conical extrusion shaft is rotatably provided inside the hollow filter press; a first motor is fixedly provided on one side outside the separation bin; an output end of the first motor is drivingly connected to the conical extrusion shaft; a discharge port is provided above the other side of the separation bin; a waste slag box is fixedly provided on the other side of the separation bin; and a waste liquid tank is connected below the separation bin.

[0009] A further improvement is that the hollow filter press cylinder is connected to the hydrolysis kettle through a pipeline, and the diameter of the conical extrusion shaft gradually increases from one side to the other.

[0010] Further improvements are: the stirring and heating mechanism includes a second motor, a stirring shaft, a heating bin, an electric heating tube and a heat conducting plate; a second motor is fixedly arranged in the middle of the top of the hydrolysis kettle; a stirring shaft is rotatably arranged inside the hydrolysis kettle; a heating bin is fixedly arranged around the hydrolysis kettle; an electric heating tube is fixedly arranged around the heating bin; and heat conducting plates are arranged and fixedly arranged on the inner side of the heating bin.

[0011] A further improvement is that the output end of the second motor is connected to the stirring shaft driving device, and the electric heating tube is in contact with the heating chamber and the heat conducting plate for heat conduction.

[0012] A further improvement is that a feed pipe is connected to the other side of the hydrolysis kettle, and an on-off valve is installed on the feed pipe.

[0013] The beneficial effects of the utility model are as follows: the utility model collects the waste gas in a waste gas buffer tank, and then the igniter burns and purifies the waste gas in the combustion chamber and then filters it through an activated carbon filter element, thereby effectively purifying the waste gas during production and solving the problem that direct discharge of waste gas easily pollutes the environment. The conical extrusion shaft is driven by the first motor to rotate in the hollow filter press cylinder and cooperates with the hollow filter press cylinder to convey the waste residue and squeeze it at the same time, and the waste liquid is pressed out of the hollow filter press cylinder to realize solid-liquid separation, which is convenient for subsequent processing and resource recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the overall front cross-sectional view of the utility model;

[0015] Figure 2 It is an enlarged schematic diagram of point A of the present utility model.

[0016] Among them: 1. hydrolysis kettle; 2. waste gas buffer tank; 3. waste gas treatment box; 4. combustion chamber; 5. gas tank; 6. igniter; 7. gas pipe; 8. activated carbon filter element; 9. separation chamber; 10. hollow filter press; 11. conical extrusion shaft; 12. first motor; 13. discharge port; 14. waste residue box; 15. waste liquid box; 16. second motor; 17. stirring shaft; 18. heating chamber; 19. electric heating tube; 20. heat conductive sheet; 21. feed pipe; 22. opening and closing valve. DETAILED DESCRIPTION

[0017] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0018] according to Figure 1 , Figure 2As shown, the present embodiment provides a furfural production slag discharge device, including a hydrolysis kettle 1, a waste gas treatment mechanism, a solid-liquid separation mechanism and a stirring and heating mechanism, the waste gas treatment mechanism includes a waste gas buffer tank 2, a waste gas treatment box 3, a combustion chamber 4, a gas tank 5, an igniter 6, a gas pipe 7 and an activated carbon filter element, a waste gas buffer tank 2 is arranged next to the hydrolysis kettle 1, a waste gas treatment box 3 is fixedly arranged on one side of the waste gas buffer tank 2, a combustion chamber 4 is arranged at the bottom of the waste gas treatment box 3, a gas tank 5 is fixedly arranged on the other side of the waste gas buffer tank 2, an igniter 6 is fixedly arranged in the combustion chamber 4, and a gas is connected between the igniter 6 and the gas tank 5. Pipe 7, an activated carbon filter element is inserted into the upper part of the waste gas treatment box 3, and a solid-liquid separation mechanism is connected to the lower part of the hydrolysis kettle 1. A stirring and heating mechanism is arranged in the hydrolysis kettle 1. When waste gas is generated in the production process, the waste gas is guided into the waste gas buffer tank 2 by a pipeline, and the gas tank 5 is opened to release the gas and ignited by the igniter 6 at the same time, so that the formaldehyde-containing waste gas burns at high temperature and is converted into harmless carbon dioxide and water vapor. It is suitable for treating high-concentration waste gas, and the residual gas is filtered again through the activated carbon filter element 8 and then discharged, which solves the problem of lack of effective treatment of the waste gas generated in the production process and direct discharge easily causing serious pollution to the environment.

[0019] The waste gas buffer tank 2 is connected to the hydrolysis kettle 1 through a pipeline, and the waste gas treatment box 3 is connected to the waste gas buffer tank 2. The top of the waste gas treatment box 3 is opened so that the waste gas is discharged from the top of the waste gas treatment box 3 after combustion and filtration purification.

[0020] The solid-liquid separation mechanism includes a separation bin 9, a hollow filter press cartridge 10, a conical extrusion shaft 11, a first motor 12, a discharge port 13, a waste slag box 14 and a waste liquid box 15. The separation bin 9 is fixedly provided below the hydrolysis kettle 1, and a hollow filter press cartridge 10 is fixedly provided in the separation bin 9. The hollow filter press cartridge 10 is connected to the hydrolysis kettle 1 by a pipeline. A conical extrusion shaft 11 is rotatably provided in the hollow filter press cartridge 10. A first motor 12 is fixedly provided on one side outside the separation bin 9. The output end of the first motor 12 is drivingly connected to the conical extrusion shaft 11, and the diameter of the conical extrusion shaft 11 gradually increases from one side to the other. A discharge port 13 is provided above the other side of the separation bin 9, a waste residue box 14 is fixedly connected to the other side of the separation bin 9, and a waste liquid box 15 is connected below the separation bin 9. When the furfural is produced, the residue and waste liquid enter the hollow filter press 10 through the pipeline after the valve is opened, and the first motor 12 drives the conical extrusion shaft 11 to rotate, pushing the residue to move to the other side of the separation bin 9 and squeezing the residue at the same time, so that the waste liquid in the residue is fully squeezed out to realize solid-liquid separation. After extrusion, the coarse residue enters the waste residue box 14 through the discharge port 13, and the extruded waste liquid passes through the hollow filter press 10 and flows into the waste liquid tank 15 for centralized treatment.

[0021] The stirring and heating mechanism includes a second motor 16, a stirring shaft 17, a heating bin 18, an electric heating tube 19 and a heat conducting sheet 20. The second motor 16 is fixedly arranged in the middle of the top of the hydrolysis kettle 1. The stirring shaft 17 is rotatably arranged in the hydrolysis kettle 1. The heating bin 18 is fixedly arranged around the hydrolysis kettle 1. The electric heating tube 19 is fixedly arranged around the heating bin 18. The heat conducting sheet 20 is arranged and fixed inside the heating bin 18. The output end of the second motor 16 is connected to the stirring shaft 17 for driving. The electric heating tube 19 is in contact with the heating bin 18 and the heat conducting sheet 20 for heat conduction. When the hydrolysis kettle 1 is in production, the raw materials and the prepared dilute sulfuric acid are poured into the hydrolysis kettle 1. The second motor 16 drives the stirring shaft 17 to rotate for stirring. At the same time, the electric heating tube 19 is energized for heating to make the heating bin 18 and the heat conducting sheet 20 generate heat to achieve uniform heating of the raw materials.

[0022] A feed pipe 21 is connected to the other side of the hydrolysis kettle 1, and an on-off valve 22 is installed on the feed pipe 21. Materials are fed into the hydrolysis kettle 1 through the feed pipe 21, and the on-off valve 22 is closed during production and processing to prevent exhaust gas from being discharged through the feed pipe 21.

[0023] During production of the furfural production slag discharge device, raw materials are poured into the hydrolysis kettle through a feed pipe, and the electric heating tube is energized to generate heat, driving the heating bin and the heat conducting plate to evenly heat the raw materials. The second motor drives the stirring shaft to rotate for sufficient stirring, and the waste gas generated by the production is transported to the waste gas buffer tank through a pipeline. The gas tank and the igniter are opened to burn and purify the waste gas in the combustion bin, and then filtered by the activated carbon filter element and discharged. After the production is completed, the hydrolysis kettle is opened to extract the furfural stock solution, and then the valve is opened to allow the waste residue and waste liquid to enter the hollow filter press through the pipeline. The first motor drives the conical extrusion shaft to rotate, pushes the waste residue to move to the other side of the separation bin, and cooperates with the hollow filter press to squeeze the waste residue, and squeezes the waste liquid out of the hollow filter press into the waste liquid tank. The waste residue enters the waste residue tank through the discharge port under the push of the conical extrusion shaft, which is convenient for subsequent treatment and resource recovery.

[0024] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A slag discharge device for furfural production, characterized in that: The invention comprises a hydrolysis kettle (1), a waste gas treatment mechanism, a solid-liquid separation mechanism and a stirring and heating mechanism. The waste gas treatment mechanism comprises a waste gas buffer tank (2), a waste gas treatment box (3), a combustion chamber (4), a gas tank (5), an igniter (6), a gas pipe (7) and an activated carbon filter element (8). A waste gas buffer tank (2) is arranged beside one side of the hydrolysis kettle (1). A waste gas treatment box (3) is fixedly arranged on one side of the waste gas buffer tank (2). A combustion chamber (4) is arranged in the lower part of the waste gas treatment box (3). A gas tank (5) is fixedly arranged on the other side of the waste gas buffer tank (2). An igniter (6) is fixedly arranged in the combustion chamber (4). A gas pipe (7) is arranged between the igniter (6) and the gas tank (5). An activated carbon filter element (8) is inserted in the upper part of the waste gas treatment box (3). A solid-liquid separation mechanism is arranged in the lower part of the hydrolysis kettle (1). A stirring and heating mechanism is arranged in the hydrolysis kettle (1).

2. A furfural production slag discharge device according to claim 1, characterized in that: The waste gas buffer tank (2) is connected to the hydrolysis kettle (1) via a pipeline, the waste gas treatment box (3) is connected to the waste gas buffer tank (2), and the waste gas treatment box (3) has an opening at the top.

3. A slag discharge device for furfural production according to claim 1, characterized in that: The solid-liquid separation mechanism comprises a separation chamber (9), a hollow filter press cylinder (10), a conical extrusion shaft (11), a first motor (12), a discharge port (13), a waste residue box (14) and a waste liquid box (15); a separation chamber (9) is fixedly provided below the hydrolysis kettle (1); a hollow filter press cylinder (10) is fixedly provided inside the separation chamber (9); a conical extrusion shaft (11) is rotatably provided inside the hollow filter press cylinder (10); a first motor (12) is fixedly provided on one side outside the separation chamber (9); an output end of the first motor (12) is drivingly connected to the conical extrusion shaft (11); a discharge port (13) is provided above the other side of the separation chamber (9); a waste residue box (14) is fixedly provided on the other side of the separation chamber (9); and a waste liquid box (15) is provided below the separation chamber (9).

4. A furfural production slag discharge device according to claim 3, characterized in that: The hollow filter press cylinder (10) is connected to the hydrolysis kettle (1) via a pipeline, and the diameter of the conical extrusion shaft (11) gradually increases from one side to the other side.

5. A slag discharge device for furfural production according to claim 1, characterized in that: The stirring and heating mechanism comprises a second motor (16), a stirring shaft (17), a heating chamber (18), an electric heating tube (19) and a heat conducting plate (20); the second motor (16) is fixedly arranged in the middle of the top of the hydrolysis kettle (1); a stirring shaft (17) is rotatably arranged in the hydrolysis kettle (1); a heating chamber (18) is fixedly arranged in the hydrolysis kettle (1); an electric heating tube (19) is fixedly arranged in the heating chamber (18); and heat conducting plates (20) are arranged and fixedly arranged on the inner side of the heating chamber (18).

6. A slag discharge device for furfural production according to claim 5, characterized in that: The output end of the second motor (16) is drivingly connected to the stirring shaft (17), and the electric heating tube (19) is in contact with the heating chamber (18) and the heat conducting plate (20) for heat conduction.

7. A slag discharge device for furfural production according to claim 1, characterized in that: The other side of the hydrolysis kettle (1) is connected to a feed pipe (21), and an on-off valve (22) is installed on the feed pipe (21).

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