Furfural rectification hydrolysis device

Abstract

The utility model relates to the technical field of hydrolysis devices, and discloses a furfural rectification hydrolysis device which comprises a hydrolysis tank, a preheating mechanism is arranged at the top of the hydrolysis tank, a cleaning mechanism is arranged in the hydrolysis tank, the preheating mechanism comprises a preheating shell, a backflow shell is fixedly connected in the preheating shell, and the backflow shell is provided with a water inlet and a water outlet. A servo motor is fixedly connected to the top of the preheating shell, a driving shaft is installed at the bottom of the servo motor, a spiral blade is installed outside the driving shaft, an electric heating pipe is installed in the preheating shell, a sealing assembly is installed outside the preheating shell, and the sealing assembly comprises a feeding pipe and a discharging pipe. An electromagnetic valve is installed outside the discharging pipe, a sealing cover is clamped to the top of the feeding pipe, and according to the furfural rectification hydrolysis device, materials can be evenly preheated through the preheating mechanism, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrolysis devices, in particular to a furfural distillation and hydrolysis device. Background Art

[0002] Furfural, also known as 2-furancarboxaldehyde, is the same substance as furfural. Its scientific name is α-furfural, which is a derivative in which the hydrogen atom at the 2-position of furan is replaced by an aldehyde group. It was originally obtained by heating rice bran with dilute acid, so it is called furfural. Furfural is produced by the hydrolysis of pentosans under the action of acid to form pentoses, and then by the dehydration and cyclization of pentoses. The main raw materials for its production are agricultural and sideline products such as corn cobs. There are many synthetic methods. Furfural is the most important derivative of the furan ring system. It has active chemical properties and can produce numerous derivatives through oxidation, condensation and other reactions. It is often used as an industrial solvent. It can also be used to prepare furfuryl alcohol, furoic acid, tetrahydrofuran, γ-valerolactone, pyrrole, tetrahydropyrrole, etc. In the processing of furfural, it is often necessary to use a distillation and hydrolysis device to distill and hydrolyze the material.

[0003] According to the "A Corn Cob Hydrolysis Device for Furfural Production" disclosed in Chinese Patent Publication No. CN216296474U, the device includes a hydrolysis tank, a heater is installed at the bottom of the hydrolysis tank, a feed pipe is fixedly connected to the front end of the hydrolysis tank, a rubber plug is movably inserted in the feed pipe, two connecting pipes are fixedly connected to the upper end of the hydrolysis tank, a crushing tank is fixedly connected to the upper ends of the two connecting pipes, a cover plate is detachably connected to the upper end of the crushing tank, a square mounting cylinder is fixedly connected to the cover plate, a crushing mechanism is arranged above the hydrolysis tank, and the crushing mechanism is used to crush the corn cob. The utility model crushes the corn cob by rotating two rollers and a plurality of crushing knives, and then further improves the crushing effect of the corn cob and thus improves the hydrolysis efficiency through the mutual cooperation of the fourth rotating rod and the stirring rod.

[0004] However, the above-mentioned prior art directly inputs the crushed materials into the hydrolysis tank without corresponding preheating, so that a long heating time is required during hydrolysis, which further affects the overall hydrolysis time and reduces the hydrolysis efficiency. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a furfural distillation and hydrolysis device that can complete the preheating operation and achieve the effect of improving work efficiency through preheating.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A furfural distillation and hydrolysis device comprises a hydrolysis tank, a preheating mechanism is arranged on the top of the hydrolysis tank, and a cleaning mechanism is arranged inside the hydrolysis tank;

[0008] The preheating mechanism includes a preheating shell, a reflux shell is fixedly connected to the interior of the preheating shell, a servo motor is fixedly connected to the top of the preheating shell, a drive shaft is installed at the bottom of the servo motor, a spiral blade is installed outside the drive shaft, an electric heating tube is installed inside the preheating shell, and a sealing component is installed outside the preheating shell.

[0009] Preferably, the closing assembly comprises a feed pipe and a discharge pipe, a solenoid valve is installed on the outside of the discharge pipe, and a closing cover is clamped on the top of the feed pipe.

[0010] Preferably, the feed pipe is fixedly connected to the top of the preheating shell, the discharge pipe is fixedly connected to the bottom of the preheating shell, and the bottom of the discharge pipe is fixedly connected to the top of the hydrolysis tank.

[0011] Preferably, a temperature sensor is installed inside the preheating shell, the drive shaft passes through the preheating shell and extends to the inside of the reflux shell, one end of the preheating shell is fixedly connected to an exhaust pipe, an exhaust valve is installed outside the exhaust pipe, and two through holes are opened at one end of the reflux shell.

[0012] Preferably, the cleaning mechanism comprises a connecting ring, a groove is formed at the bottom of the connecting ring, an electric telescopic rod is fixedly connected to the inside of the groove, a sealing plate is fixedly connected to the bottom of the electric telescopic rod, and a scraping ring is fixedly connected to the bottom of the sealing plate.

[0013] Preferably, the connecting ring is screwed to the inner side of the hydrolysis tank, and the diameter of the connecting ring is matched with the diameter of the inner side of the hydrolysis tank.

[0014] Preferably, a plurality of the electric telescopic rods are provided, and the plurality of the electric telescopic rods are distributed in a ring array.

[0015] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0016] First, the material is input into the interior of the preheating shell from the feed pipe at the top of the preheating shell, and then the feed pipe is covered with a closed cover to seal the preheating shell, and then the bottom inside the preheating shell is set to be inclined so that the material can slide into the reflux shell through the inclined bottom after entering the preheating shell, and then the electric heating tube is started to heat the interior of the preheating shell to preheat the material, and at the same time, the servo motor is started to drive the drive shaft to rotate, so that the spiral blade drives the material to move upward evenly, and then the material reaches the through hole at the top of the reflux shell, and from there, it falls back into the preheating shell, thereby avoiding the accumulation of materials in one place and uneven preheating. During preheating, the generated gas is discharged from the exhaust pipe and controlled by the set exhaust valve, and then the preheating temperature is detected by the temperature sensor. After reaching the standard, the solenoid valve is opened, and then the material can be discharged from the discharge pipe into the hydrolysis tank, thereby completing the preheating operation and achieving the effect of improving work efficiency through preheating.

[0017] Second, when the furfural hydrolysis is completed, the sealing plate is pushed down by starting the electric telescopic rod in the groove of the connecting pipe, thereby pushing the scraping ring down. The scraping ring fits against the inner wall of the hydrolysis tank, so that the adhesion on the inner wall of the hydrolysis tank can be scraped off when the scraping ring descends, which is convenient for the subsequent cleaning of the hydrolysis tank. The setting of the sealing plate and the connecting ring can protect the electric telescopic rod and avoid damage to the electric telescopic rod. Then the setting of the screw connection also facilitates the subsequent disassembly of the connecting ring, thereby completing the effect of scraping off the adhesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall stereogram of the utility model;

[0019] Figure 2 It is a three-dimensional diagram of the cleaning mechanism of the utility model;

[0020] Figure 3 It is a cross-sectional view of the utility model;

[0021] Figure 4 This is a cross-sectional view of the cleaning mechanism of the utility model;

[0022] Figure 5 It is an enlarged view of point A of the present utility model.

[0023] Among them: 1. hydrolysis tank; 2. preheating mechanism; 3. cleaning mechanism; 21. preheating shell; 22. servo motor; 23. drive shaft; 24. spiral blade; 25. electric heating tube; 26. closing component; 27. feed pipe; 28. discharge pipe; 29. ​​solenoid valve; 201. closing cover; 202. reflux shell; 31. connecting ring; 32. electric telescopic rod; 33. sealing plate; 34. scraping ring. DETAILED DESCRIPTION

[0024] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings.

[0025] Embodiment 1

[0026] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , a furfural distillation and hydrolysis device, comprising a hydrolysis tank 1, a preheating mechanism 2 is arranged on the top of the hydrolysis tank 1, and a cleaning mechanism 3 is arranged inside the hydrolysis tank 1;

[0027] The preheating mechanism 2 includes a preheating shell 21, a reflux shell 202 is fixedly connected to the interior of the preheating shell 21, a servo motor 22 is fixedly connected to the top of the preheating shell 21, a driving shaft 23 is installed at the bottom of the servo motor 22, a spiral blade 24 is installed outside the driving shaft 23, an electric heating tube 25 is installed inside the preheating shell 21, and a closing component 26 is installed outside the preheating shell 21.

[0028] The closing assembly 26 includes a feed pipe 27 and a discharge pipe 28 . A solenoid valve 29 is installed outside the discharge pipe 28 . A closing cover 201 is clamped on the top of the feed pipe 27 .

[0029] The feed pipe 27 is fixedly connected to the top of the preheating shell 21 , the discharge pipe 28 is fixedly connected to the bottom of the preheating shell 21 , and the bottom of the discharge pipe 28 is fixedly connected to the top of the hydrolysis tank 1 .

[0030] A temperature sensor is installed inside the preheating shell 21, and the drive shaft 23 passes through the preheating shell 21 and extends to the inside of the reflux shell 202. One end of the preheating shell 21 is fixedly connected to an exhaust pipe, and an exhaust valve is installed outside the exhaust pipe. Two through holes are opened at one end of the reflux shell 202.

[0031] According to the above technical solution, the material is fed into the preheating shell 21 from the feed pipe 27 at the top of the preheating shell 21, and then the feed pipe 27 is covered by the closing cover 201 to seal the preheating shell 21. Then, the bottom of the inner side of the preheating shell 21 is set to be inclined so that the material can slide into the reflux shell 202 through the inclined bottom after entering the preheating shell 21. Then, the electric heating tube 25 is started to heat the inside of the preheating shell 21 to preheat the material. At the same time, the servo motor 22 is started to drive the drive shaft 23 to rotate, so that the spiral blade 24 drives the material to move upward evenly, and then the material arrives. The gas reaches the through hole at the top of the reflux shell 202, and falls back into the preheating shell 21 from there, thereby avoiding the accumulation of materials in one place and uneven preheating. During preheating, the generated gas is discharged from the exhaust pipe and controlled by the exhaust valve provided. The preheating temperature is then detected by the temperature sensor. After reaching the standard, the solenoid valve 29 is opened, and then the material can be discharged from the discharge pipe 28 into the hydrolysis tank 1, thereby completing the preheating operation and achieving the effect of improving work efficiency through preheating. The above-mentioned exhaust valve, solenoid valve 29 and temperature sensor are all prior arts, and their working principles are well known to those skilled in the art, so they are not described in detail.

[0032] Embodiment 2

[0033] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 On the basis of the first embodiment, it is further obtained that the cleaning mechanism 3 includes a connecting ring 31, a groove is provided at the bottom of the connecting ring 31, an electric telescopic rod 32 is fixedly connected inside the groove, a sealing plate 33 is fixedly connected to the bottom of the electric telescopic rod 32, and a scraping ring 34 is fixedly connected to the bottom of the sealing plate 33.

[0034] The connecting ring 31 is screwed to the inner side of the hydrolysis tank 1 , and the diameter of the connecting ring 31 matches the diameter of the inner side of the hydrolysis tank 1 .

[0035] A plurality of electric telescopic rods 32 are provided, and the plurality of electric telescopic rods 32 are arranged to be distributed in a ring array.

[0036] Through the above technical solution, the connecting ring 31 is connected to the filling cover of the hydrolysis tank 1 by screws. When the furfural hydrolysis is completed, the electric telescopic rod 32 in the groove of the connecting pipe 31 is started to push the sealing plate 33 down, thereby pushing the scraping ring 34 down. The scraping ring 34 fits the inner wall of the hydrolysis tank 1, so that the scraping ring 34 can scrape off the adhesion on the inner wall of the hydrolysis tank 1 when it descends, which is convenient for the subsequent cleaning of the hydrolysis tank 1. The setting of the sealing plate 33 and the connecting ring 31 can protect the electric telescopic rod 32 and avoid damage to the electric telescopic rod 32. Then the setting of the screw connection also facilitates the subsequent disassembly of the connecting ring, thereby completing the effect of scraping off the adhesion.

[0037] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit thereof, and the scope of these changes, modifications, substitutions and variations is defined by the appended claims and their equivalents.

Claims

1. A furfural distillation and hydrolysis device, comprising a hydrolysis tank (1), characterized in that: The top of the hydrolysis tank (1) is provided with a preheating mechanism (2), and the interior of the hydrolysis tank (1) is provided with a cleaning mechanism (3); The preheating mechanism (2) comprises a preheating shell (21), the interior of the preheating shell (21) is fixedly connected to a reflux shell (202), the top of the preheating shell (21) is fixedly connected to a servo motor (22), the bottom of the servo motor (22) is installed with a driving shaft (23), the outside of the driving shaft (23) is installed with a spiral blade (24), the interior of the preheating shell (21) is installed with an electric heating tube (25), and the outside of the preheating shell (21) is installed with a sealing component (26).

2. A furfural distillation and hydrolysis device according to claim 1, characterized in that: The sealing component (26) comprises a feed pipe (27) and a discharge pipe (28), a solenoid valve (29) is installed outside the discharge pipe (28), and a sealing cover (201) is clamped on the top of the feed pipe (27).

3. A furfural distillation and hydrolysis device according to claim 2, characterized in that: The feed pipe (27) is fixedly connected to the top of the preheating shell (21), the discharge pipe (28) is fixedly connected to the bottom of the preheating shell (21), and the bottom of the discharge pipe (28) is fixedly connected to the top of the hydrolysis tank (1).

4. A furfural distillation and hydrolysis device according to claim 1, characterized in that: A temperature sensor is installed inside the preheating shell (21); the driving shaft (23) passes through the preheating shell (21) and extends to the inside of the reflux shell (202); one end of the preheating shell (21) is fixedly connected to an exhaust pipe; an exhaust valve is installed outside the exhaust pipe; and one end of the reflux shell (202) is provided with two through holes.

5. A furfural distillation and hydrolysis device according to claim 1, characterized in that: The cleaning mechanism (3) comprises a connecting ring (31), the bottom of the connecting ring (31) is provided with a groove, the interior of the groove is fixedly connected to an electric telescopic rod (32), the bottom of the electric telescopic rod (32) is fixedly connected to a sealing plate (33), and the bottom of the sealing plate (33) is fixedly connected to a scraping ring (34).

6. A furfural distillation and hydrolysis device according to claim 5, characterized in that: The connecting ring (31) is screwed to the inner side of the hydrolysis tank (1), and the diameter of the connecting ring (31) is adapted to the diameter of the inner side of the hydrolysis tank (1).

7. A furfural distillation and hydrolysis device according to claim 5, characterized in that: A plurality of the electric telescopic rods (32) are provided, and the plurality of the electric telescopic rods (32) are arranged to be distributed in a ring array.

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