Sorbitol reaction kettle convenient to discharge

Abstract

The utility model provides a sorbitol reaction kettle convenient for blanking, which comprises a reaction kettle main body, a hydrogen buffer tank arranged on one side of the reaction kettle and a pressure swing adsorption raw material gas buffer tank, when hydrogen in the reaction kettle main body is emptied and replaced, the hydrogen in the reaction kettle passes through a pressure stabilizing valve arranged on one side of the reaction kettle, and the pressure swing adsorption raw material gas is fed into the reaction kettle main body. The pressure stabilizing valve plays a role in stabilizing hydrogen pressure so as to avoid the safety problem caused by pressure fluctuation, hydrogen enters the mounting frame, is filtered by the sieve plate arranged on the fixed column and then enters the hydrogen buffer tank, and the hydrogen buffer tank can relieve hydrogen flow fluctuation and ensure the stability of hydrogen supply. Hydrogen enters the reaction kettle main body to be recycled after being adsorbed and purified by the pressure swing adsorption raw material gas buffer tank and boosted by the hydrogen-hydrogen press, and the structure can reduce the flow rate during hydrogen emptying and replacement, reduce the existing potential safety hazard, reduce the consumption of hydrogen to a certain extent, prevent the hydrogen in the reaction kettle from being discharged, and improve the safety of the reaction kettle. And the hydrogen can be recycled.

Description

Technical Field

[0001] The utility model relates to the field of sorbitol processing equipment, in particular to a sorbitol reaction kettle which is convenient for unloading. Background Art

[0002] Sorbitol is a widely used fine chemical, which is widely used in many industries such as medicine, food, cosmetics, tobacco, etc. Different industries have different quality requirements for sorbitol. At present, the production and preparation methods of sorbitol include catalytic hydrogenation, electrolytic reduction, and biological fermentation. For the preparation of industrial-grade products sorbitol with low purity requirements, catalytic hydrogenation has the advantages of simple preparation method and low cost, but the use of catalyst types in catalytic hydrogenation is limited, and the purity of the product needs to be improved. Sorbitol often needs to use a sorbitol reactor in the preparation process. Existing sorbitol reactors are usually designed with discharge ports for convenient unloading. These discharge ports are usually located at the bottom of the reactor, and sorbitol can be easily transferred from the reactor to other containers or equipment for subsequent processing or transportation.

[0003] Now, after a period of sorbitol production, the purity of hydrogen in the reactor will decrease, resulting in a long reaction time. If the hydrogen in the reactor is not properly treated or replaced, it may affect the production efficiency and product quality of sorbitol. The method of venting the hydrogen and replacing it can ensure the purity of hydrogen in the production process, thereby improving production efficiency and product quality. However, in the process of venting the hydrogen in the reactor, since hydrogen is a highly flammable and explosive gas, a hydrogen flow rate that is too fast will cause explosions and static electricity ignition, making the hydrogen replacement process prone to safety hazards and increasing the risk of accidents. Moreover, if the hydrogen flow rate is too fast during the replacement process, the residence time of hydrogen in the reactor or pipeline will be shortened, resulting in insufficient reaction between hydrogen and reactants, increasing hydrogen consumption, and affecting normal production to a certain extent.

[0004] Therefore, it is necessary to provide a new sorbitol reactor that is convenient for unloading to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a sorbitol reaction kettle which is convenient for unloading.

[0006] The utility model provides a convenient unloading sorbitol reactor comprising: a reactor body, a hydrogen buffer tank and a pressure swing adsorption raw gas buffer tank arranged at one side of the reactor, a pressure stabilizing valve is arranged at one side of the reactor body, one end of the pressure stabilizing valve is connected to the gas input port of the filter mechanism through a pipeline, the gas output port of the filter mechanism is connected to the gas input port of the hydrogen buffer tank through a pipeline, the pressure stabilizing valve is connected to the hydrogen buffer tank through a pipeline, the hydrogen buffer tank is connected to the pressure swing adsorption raw gas buffer tank through a pipeline, and a hydrogen compressor is arranged at one side of the pressure swing adsorption raw gas buffer tank;

[0007] The filtering mechanism includes a mounting frame, a fixed column and a sieve plate. A heating element is provided on the inner side wall of the mounting frame. Both ends of the fixed column are respectively fixedly connected to the inner walls on both sides of the mounting frame. A plurality of sieve plates are fixedly connected to the inner side wall of the fixed column. The plurality of sieve plates are filled with honeycomb-shaped molecular sieve particles. The plurality of sieve plates are staggered left and right, and the gaps between the plurality of sieve plates form a channel. An exhaust pipe is provided on the mounting frame. The gas input port of the mounting frame is connected to the pressure regulating valve through a pipeline, and the gas output port of the mounting frame is connected to the air inlet of the hydrogen buffer tank. The gas input port and the gas output port of the mounting frame are respectively provided with a first pipeline valve and a second pipeline valve.

[0008] Preferably, an exhaust port is provided at the upper end of the reactor body, and a discharge port is provided at the bottom end of the reactor body.

[0009] Preferably, the gas outlet of the pressure swing adsorption raw gas buffer tank is connected to the gas inlet of the hydrogen compressor through a pipeline.

[0010] Preferably, the gas outlet of the hydrogen compressor is connected to the gas inlet of the reactor body through a pipeline.

[0011] Preferably, a motor is connected to the middle of the upper end of the reactor body, and a sealing device is sleeved at the connection between the motor and the reactor body.

[0012] Preferably, the sealing device adopts magnetic sealing or mechanical sealing.

[0013] Compared with the related art, the sorbitol reactor provided by the utility model has the following advantages:

[0014] Beneficial effects:

[0015] The utility model provides a sorbitol reactor with convenient material discharge. When the hydrogen in the reactor body is emptied and replaced, the hydrogen in the reactor passes through a pressure-stabilizing valve arranged on one side of the reactor. The pressure-stabilizing valve plays a role in stabilizing the hydrogen pressure and controlling it within a certain range to avoid safety problems caused by pressure fluctuations. The hydrogen enters an installation frame and enters a hydrogen buffer tank after being filtered through a sieve plate arranged on a fixed column. The hydrogen buffer tank is used to store hydrogen, alleviate hydrogen flow fluctuations, and ensure the stability of hydrogen supply, so that the hydrogen enters the reactor body for recycling after being adsorbed and purified by a pressure swing adsorption raw gas buffer tank and pressurized by a hydrogen compressor. The structure can reduce the flow rate when the hydrogen is emptied and replaced, reduces the existing safety hazards, and reduces the consumption of hydrogen to a certain extent, avoids the hydrogen in the reactor from being discharged, and enables the hydrogen to be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structural diagram of the sorbitol reaction kettle provided by the utility model for convenient material discharge;

[0017] Figure 2 A cross-sectional view of the filter mechanism provided by the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the fixed column provided by the utility model.

[0019] Numbers in the figure: 1. Reactor body; 2. Exhaust port; 3. Discharge port; 4. Motor; 5. Sealing device; 6. Hydrogen buffer tank; 7. Pressure swing adsorption raw gas buffer tank; 8. Pressure regulating valve; 9. Installation frame; 10. Fixed column; 11. Hydrogen compressor; 12. Exhaust pipe; 13. Sieve plate; 14. First pipeline valve; 15. Second pipeline valve; 16. Heating element. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0021] Please refer to Figure 1-Figure 3 ,in, Figure 1 The overall structural diagram of the sorbitol reaction kettle provided by the utility model for convenient material discharge; Figure 2 A cross-sectional view of the filter mechanism provided by the utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the fixed column provided by the utility model.

[0022] In the specific implementation process, Figure 1-Figure 3As shown, a sorbitol reactor convenient for unloading includes a reactor body 1, a hydrogen buffer tank 6 arranged on one side of the reactor, and a pressure swing adsorption raw gas buffer tank 7. A pressure-stabilizing valve 8 is arranged on one side of the reactor body 1. One end of the pressure-stabilizing valve 8 is connected to the gas input port of the filter mechanism through a pipeline, and the gas output port of the filter mechanism is connected to the gas input port of the hydrogen buffer tank 6 through a pipeline. The pressure-stabilizing valve 8 is connected to the hydrogen buffer tank 6 through a pipeline. The pressure-stabilizing valve 8 plays a role in stabilizing the hydrogen pressure and controlling it within a certain range to avoid safety problems caused by pressure fluctuations. The hydrogen buffer tank 6 is connected to the pressure swing adsorption raw gas buffer tank 7 through a pipeline. The hydrogen buffer tank 6 is used to store hydrogen, alleviate hydrogen flow fluctuations, and ensure hydrogen supply. Stability, a hydrogen compressor 11 is provided on one side of the pressure swing adsorption raw gas buffer tank 7, the filtering mechanism includes a mounting frame 9, a fixed column 10 and a sieve plate 13, a heating element 16 is provided on the inner wall of the mounting frame 9, both ends of the fixed column 10 are respectively fixedly connected to the inner walls on both sides of the mounting frame 9, a plurality of sieve plates 13 are fixedly connected to the inner wall of the fixed column 10, the plurality of sieve plates 13 are filled with honeycomb-shaped molecular sieve particles, the plurality of sieve plates 13 are staggered left and right, the gaps between the plurality of sieve plates 13 form a channel, an exhaust pipe 12 is provided on the mounting frame 9, the gas input port of the mounting frame 9 is connected to the pressure regulating valve 8 through a pipeline, the gas output port of the mounting frame 9 is connected to the air inlet of the hydrogen buffer tank 6, the gas input port and the gas output port of the mounting frame 9 are separated A first pipeline valve 14 and a second pipeline valve 15 are separately provided. When hydrogen enters the fixed column 10, the staggered arrangement of the sieve plates 13 can make the hydrogen move in the gaps formed between the sieve plates 13. The hydrogen constantly changes direction during the flow, which prolongs the movement path of the hydrogen and slows down the flow rate of the hydrogen, thereby increasing the contact time between the hydrogen and the sieve plate 13 and the molecular sieve on the sieve plate 13. Through the selective adsorption of the molecular sieve, the impurity molecules in the gas can be adsorbed and the flow fluctuation of the hydrogen can be alleviated, so that the pure hydrogen can enter the next step through the molecular sieve. The impurity molecules adsorbed on the molecular sieve can be desorbed from the pores of the molecular sieve by starting the heating element 16, and the impurity molecules are discharged through the exhaust pipe 12. An exhaust port 2 is provided at the upper end of the reactor body 1, and a discharge port 3 is provided at the bottom end of the reactor body 1. The discharge port 3 at the bottom end of the reactor body 1 can conveniently transfer sorbitol from the reactor to other containers or equipment for subsequent processing or transportation, and the discharge through the discharge port 3 can also effectively control the flow rate and flow velocity of sorbitol to avoid unexpected situations during the unloading process. The outlet of the pressure swing adsorption raw gas buffer tank 7 is connected to the air inlet of the hydrogen compressor 11 through a pipeline, and the outlet of the hydrogen compressor 11 is connected to the air inlet of the reactor body 1 through a pipeline. A motor 4 is connected to the middle of the upper end of the reactor body, and a sealing device 5 is sleeved at the connection between the motor 4 and the reactor body. The sealing device 5 adopts a magnetic seal or a mechanical seal.

[0023] The working principle provided by the utility model is as follows: when the hydrogen in the reactor body 1 is vented and replaced, the hydrogen in the reactor passes through the pressure-stabilizing valve 8 arranged on one side of the reactor, enters the installation frame 9 through the pipeline, and enters the hydrogen buffer tank 6 after being filtered through the sieve plate 13 arranged on the fixed column 10. The hydrogen enters the pressure swing adsorption raw gas buffer tank 7 from the hydrogen buffer tank 6. The hydrogen enters the hydrogen compressor 11 after being adsorbed and purified by the pressure swing adsorption raw gas buffer tank 7. After the hydrogen is pressurized, it enters the reactor body 1 through the pipeline for recycling. After the processing is completed, the sorbitol in the reactor body 1 can be discharged through the discharge port 3 at the bottom of the reactor.

[0024] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0025] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A sorbitol reactor convenient for unloading, characterized in that: include: A reactor body (1), a hydrogen buffer tank (6) arranged on one side of the reactor, and a pressure swing adsorption raw gas buffer tank (7), wherein a pressure stabilizing valve (8) is arranged on one side of the reactor body (1), one end of the pressure stabilizing valve (8) is connected to a gas input port of a filter mechanism through a pipeline, a gas output port of the filter mechanism is connected to a gas input port of the hydrogen buffer tank (6) through a pipeline, the pressure stabilizing valve (8) is connected to the hydrogen buffer tank (6) through a pipeline, the hydrogen buffer tank (6) is connected to the pressure swing adsorption raw gas buffer tank (7) through a pipeline, and a hydrogen compressor (11) is arranged on one side of the pressure swing adsorption raw gas buffer tank (7); The filtering mechanism comprises a mounting frame (9), a fixing column (10) and a sieve plate (13); a heating element (16) is provided on the inner side wall of the mounting frame (9); two ends of the fixing column (10) are respectively fixedly connected to the inner walls on both sides of the mounting frame (9); a plurality of sieve plates (13) are fixedly connected to the inner side wall of the fixing column (10); the plurality of sieve plates (13) are filled with honeycomb-shaped molecular sieve particles; the plurality of sieve plates (13) are staggered left and right; the gaps between the plurality of sieve plates (13) form a channel; an exhaust pipe (12) is provided on the mounting frame (9); a gas input port of the mounting frame (9) is connected to the pressure regulating valve (8) through a pipeline; a gas output port of the mounting frame (9) is connected to the gas inlet of the hydrogen buffer tank (6); a first pipeline valve (14) and a second pipeline valve (15) are respectively provided on the gas input port and the gas output port of the mounting frame (9).

2. The sorbitol reaction kettle with convenient unloading according to claim 1, characterized in that: The upper end of the reactor body (1) is provided with an exhaust port (2), and the bottom end of the reactor body (1) is provided with a discharge port (3).

3. The sorbitol reaction kettle convenient for unloading according to claim 2, characterized in that: The gas outlet of the pressure swing adsorption raw gas buffer tank (7) is connected to the gas inlet of the hydrogen compressor (11) through a pipeline.

4. The sorbitol reaction kettle with convenient unloading according to claim 3, characterized in that: The gas outlet of the hydrogen compressor (11) is connected to the gas inlet of the reactor body (1) through a pipeline.

5. The sorbitol reaction kettle with convenient unloading according to claim 4, characterized in that: A motor (4) is connected to the middle of the upper end of the reactor body, and a sealing device (5) is sleeved at the connection between the motor (4) and the reactor body.

6. The sorbitol reaction kettle with convenient unloading according to claim 5, characterized in that: The sealing device (5) adopts magnetic sealing or mechanical sealing.

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