Furfural refining equipment

Abstract

The utility model discloses furfural refining equipment and relates to the technical field of furfural refining. The device comprises a furfural refining tower, a feed pipe is fixed on the side wall of the furfural refining tower in a penetrating manner, a temperature sensor is fixed on the side wall of the furfural refining tower below the feed pipe in a penetrating manner, an electric heating plate is embedded and fixed in the lower part of the furfural refining tower, and a discharge pipe is fixedly arranged at the bottom of the furfural refining tower; and the top of the furfural refining tower is fixedly connected with an annular cooling tower body. Through the spiral cooling channel, cooling water can be fully subjected to heat exchange with the wall surface of the cooling wall, so that the cooling effect on methanol, ethanol, acetone and the like can be improved, the methanol, the ethanol, the acetone and the like can be condensed into liquid water drops, and a plurality of cooling fins are arranged on the wall surface of the cooling wall, so that the cooling effect is improved. The area of the cooling wall can be extended, and the condensation heat exchange area of gaseous methanol, ethanol, acetone and the like is increased, so that the condensation efficiency of substances such as methanol, ethanol, acetone and the like can be further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of furfural refining, in particular to furfural refining equipment. Background Art

[0002] Furfural is an organic compound, mainly used as an industrial solvent. Furfural refining is a substance that separates the ideal components from the non-ideal components in the lubricating oil fraction, improves the viscosity-temperature performance of the oil, reduces the residual carbon value and acid value, improves the antioxidant stability of the oil and reduces the color of the oil. After searching, the patent with application number 202321457313.0 discloses a furfural refining device, including a refining tower, a supporting mechanism is installed at the bottom of the refining tower, a cooling mechanism is installed at the top of the refining tower, the refining tower includes a main body, a tower top is installed at the top of the main body, and the tower top is a hollow cone structure. The inner wall of the main body is fixedly connected with a guide ring, and the guide ring is located below the tower top. The outer wall of the main body is fixedly connected with a first discharge pipe, and a first control valve is installed inside the first discharge pipe. The first discharge pipe is connected to the guide ring. The cooling mechanism includes a water tank, which is installed on the upper surface of the tower top, and the left wall of the water tank is fixedly connected with a water inlet pipe, and the right wall of the water tank is fixedly connected with a water outlet pipe.

[0003] However, in actual use, the applicant found that when condensing gaseous methanol, ethanol and acetone, cooling is performed by introducing cooling water into the water tank, and the water tank lacks a guiding structure for cooling water, so that the cooling water entering the water tank will flow out quickly and cannot fully exchange heat. In addition, the water far away from the outlet pipe will stay in the water tank for a long time, thereby reducing the condensation effect of gaseous methanol, ethanol and acetone. In view of this, we propose a furfural refining equipment. Utility Model Content

[0004] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0005] The utility model discloses a furfural refining equipment, comprising a furfural refining tower, a feed pipe is fixedly penetrated on the side wall of the furfural refining tower, a temperature sensor is fixedly penetrated on the side wall of the furfural refining tower below the feed pipe, an electric heating plate is embedded and fixedly arranged at the lower part of the furfural refining tower, a discharge pipe is fixedly arranged at the bottom of the furfural refining tower, an annular cooling tower body is fixedly connected to the top of the furfural refining tower, and the annular cooling tower body is communicated with the furfural refining tower, a cooling wall is provided on the inner side wall of the annular cooling tower body, and a spiral cooling wall is provided inside the annular cooling tower body outside the cooling wall. A cooling channel, a water inlet pipe is fixedly connected to the annular cooling tower body at the water inlet end of the spiral cooling channel, a water outlet pipe is fixedly connected to the annular cooling tower body at the water outlet end of the spiral cooling channel, cooling fins are fixedly connected to the cooling wall, an annular guide groove is opened in the annular cooling tower body below the cooling wall, a drain pipe is fixedly connected to the bottom of the annular cooling tower body, and the drain pipe is communicated with the bottom of the annular guide groove, a tower top is fixedly connected to the top of the annular cooling tower body, and the tower top is communicated with the interior of the annular cooling tower body, and an air outlet pipe is fixedly arranged on the top of the tower top.

[0006] Preferably, the feed pipe, discharge pipe, liquid discharge pipe and air outlet pipe are all sleeved and fixed with valves adapted thereto.

[0007] Preferably, a control panel is fixedly mounted on the outer wall of the furfural refining tower, and the control panel is electrically connected to an external power supply via a wire.

[0008] Preferably, the bottom of the furfural refining tower is symmetrically and fixedly connected with supporting legs.

[0009] Preferably, a plurality of cooling fins on the inner wall of the cooling wall are arranged in a ring array along the cooling wall.

[0010] Preferably, the height of the cooling fins is the same as the height of the cooling wall.

[0011] The utility model has the following beneficial effects:

[0012] The utility model discloses furfural refining equipment. By means of a spiral cooling channel, cooling water can fully exchange heat with the wall surface of a cooling wall, thereby improving the cooling effect on methanol, ethanol, acetone and the like, so that they can be condensed into liquid water droplets. By means of a plurality of cooling fins being arranged on the wall surface of the cooling wall, the area of ​​the cooling wall can be extended, and the condensation heat exchange area of ​​gaseous methanol, ethanol, acetone and the like is increased, thereby further improving the condensation efficiency of substances such as methanol, ethanol, acetone and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a schematic diagram of the top view of the structure of a furfural refining device of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of a furfural refining device in a bottom view according to the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of a furfural refining device of the utility model;

[0017] Figure 4 This utility model is a furfural refining equipment Figure 3 A magnified view of the structure in the middle.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1. Furfural refining tower; 11. Feed pipe; 12. Discharge pipe; 13. Support leg; 2. Annular cooling tower body; 21. Water inlet pipe; 22. Water outlet pipe; 23. Drain pipe; 24. Cooling wall; 25. Cooling fins; 26. Annular guide groove; 27. Spiral cooling channel; 3. Tower top; 31. Air outlet pipe; 4. Control panel; 5. Temperature sensor; 6. Electric heating plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 As shown, the utility model provides a technical solution:

[0022] A furfural refining device comprises a furfural refining tower 1, a feed pipe 11 is fixedly penetrated on the side wall of the furfural refining tower 1, a temperature sensor 5 is fixedly penetrated on the side wall of the furfural refining tower 1 below the feed pipe 11, an electric heating plate 6 is embedded and fixed in the lower part of the furfural refining tower 1, a discharge pipe 12 is fixedly arranged at the bottom of the furfural refining tower 1, an annular cooling tower body 2 is fixedly connected to the top of the furfural refining tower 1, and the annular cooling tower body 2 is connected to the furfural refining tower 1, a cooling wall 24 is provided on the inner side wall of the annular cooling tower body 2, and the inner side wall of the annular cooling tower body 2 is provided with a cooling wall 24. There is a spiral cooling channel 27. Through the spiral cooling channel 27, the cooling water can fully exchange heat with the wall surface of the cooling wall 24, so as to improve the cooling effect on methanol, ethanol and acetone, so that they can be condensed into liquid water droplets. The annular cooling tower body 2 at the water inlet end of the spiral cooling channel 27 is fixedly connected with an inlet pipe 21, and the annular cooling tower body 2 at the water outlet end of the spiral cooling channel 27 is fixedly connected with an outlet pipe 22. The inlet pipe 21 and the outlet pipe 22 are connected to the supply equipment of the external circulating cooling water through the connecting water pipe. The annular cooling tower body 2 below the cooling wall 24 is fixedly connected with an outlet pipe 22. An annular guide groove 26 is provided in the cooling tower body 2, a drain pipe 23 is fixedly connected to the bottom of the annular cooling tower body 2, and the drain pipe 23 is communicated with the bottom of the annular guide groove 26, a tower top 3 is fixedly connected to the top of the annular cooling tower body 2, and the tower top 3 is communicated with the inside of the annular cooling tower body 2, an air outlet pipe 31 is fixedly provided on the top of the tower top 3, and valves adapted thereto are fixedly sleeved on the feed pipe 11, the discharge pipe 12, the drain pipe 23 and the air outlet pipe 31, a control panel 4 is fixedly installed on the outer wall of the furfural refining tower 1, and the control panel 4 is electrically connected to an external power supply through a wire The temperature sensor 5, the electric heating plate 6 and the valves on the equipment are electrically connected to the control panel 4 through wires. The bottom of the furfural refining tower 1 is symmetrically fixedly connected with a support leg 13. When in use, the valve at the feed pipe 11 is opened, and the solution to be separated is added to the furfural refining tower 1 through the feed pipe 11, and the valve at the feed pipe 11 is closed. Then, the solution inside the furfural refining tower 1 is heated by the electric heating plate 6. Since the boiling points of methanol, ethanol, acetone, and furfural in the solution are 64.8°C, 78.3°C, 56.53°C, and 161.7℃, when the temperature rises to about 80℃-85℃, methanol, ethanol, acetone, etc. will evaporate into gaseous state, at this time, cooling water is transported from the water inlet pipe 21 to the inside of the spiral cooling channel 27 to reduce the temperature of the cooling wall 24. At this time, high-temperature gases such as methanol, ethanol, acetone, etc. will condense into liquid water droplets on the surface of the cooling wall 24 when encountering the low-temperature cooling wall 24, and flow into the annular guide groove 26 along the cooling wall 24. The valve at the drain pipe 23 is opened to discharge the solution in the annular guide groove 26 through the drain pipe 23. In this process, the cooling water after heat exchange It can be exported through the outlet pipe 22. After a period of low temperature environment, the content of methanol, ethanol, acetone and other substances in the furfural refining tower 1 will decrease. Then close the valve at the drain pipe 23 and drain the cooling water in the water tank 301. Then continue to heat the furfural refining tower 1 to raise the solution temperature to about 170°C, and open the valve at the outlet pipe 31. The furfural in the solution will evaporate into gaseous state due to the heat and be discharged through the outlet pipe 31. After most of the furfural is discharged, open the valve at the discharge pipe 12 to discharge the remaining solution through the discharge pipe 12. .

[0023] Cooling fins 25 are fixedly connected to the cooling wall 24. A number of cooling fins 25 on the inner wall of the cooling wall 24 are arranged in a circular array along the cooling wall 24. The cooling fins 25 can extend the area of ​​the cooling wall 24 to increase the condensation heat exchange area of ​​gaseous methanol, ethanol, acetone, etc., thereby further improving the condensation efficiency of substances such as methanol, ethanol, acetone, etc. The height of the cooling fins 25 is the same as the height of the cooling wall 24. During the condensation of gaseous methanol, ethanol, acetone, etc., heat exchange can also occur on the surface of the cooling fins 25, and condense into water droplets that drip along the cooling fins 25 into the annular guide groove 26.

[0024] Working principle: When in use, open the valve at the feed pipe 11, add the solution to be separated into the furfural refining tower 1 through the feed pipe 11, and close the valve at the feed pipe 11, and then heat the solution inside the furfural refining tower 1 through the electric heating plate 6. Since the boiling points of methanol, ethanol, acetone and furfural in the solution are 64.8°C, 78.3°C, 56.53°C and 161.7°C, when the temperature rises to about 80°C-85°C, methanol, ethanol, acetone and the like will evaporate into a gaseous state. At this time, cooling water is transported from the water inlet pipe 21 to the inside of the spiral cooling channel 27 to reduce the temperature of the cooling wall 24. At this time, high-temperature gases such as methanol, ethanol and acetone will encounter the low-temperature cooling wall 24 and condense into liquid water droplets on the surface of the cooling wall 24, and flow into the annular guide groove 26 along the cooling wall 24. In the cold gaseous methanol, ethanol, acetone and the like, the liquid water droplets will be condensed into liquid water droplets. During the condensation process, heat exchange can also occur on the surface of the cooling fins 25, and condensed water droplets drip along the cooling fins 25 into the annular guide groove 26. The valve at the drain pipe 23 is opened, and the solution in the annular guide groove 26 can be discharged through the drain pipe 23. In this process, the cooling water after heat exchange can be discharged through the outlet pipe 22. After a period of low temperature environment, the content of substances such as methanol, ethanol, and acetone in the furfural refining tower 1 will decrease. Then, the valve at the drain pipe 23 is closed, and the cooling water in the water tank 301 is drained. Then, the furfural refining tower 1 is continued to be heated to increase the solution temperature to about 170°C, and the valve at the outlet pipe 31 is opened. The furfural in the solution will be evaporated into a gaseous state by heat and discharged through the outlet pipe 31. After most of the furfural is discharged, the valve at the discharge pipe 12 is opened, and the remaining solution can be discharged through the discharge pipe 12.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0026] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions described in the aforementioned embodiments and any equivalent replacement of some of the technical features therein are within the protection scope of the present invention.

Claims

1. A furfural refining device, comprising a furfural refining tower (1), characterized in that: A feed pipe (11) is fixedly passed through the side wall of the furfural refining tower (1), a temperature sensor (5) is fixedly passed through the side wall of the furfural refining tower (1) below the feed pipe (11), an electric heating plate (6) is embedded and fixedly provided at the lower part of the furfural refining tower (1), a discharge pipe (12) is fixedly provided at the bottom of the furfural refining tower (1), an annular cooling tower body (2) is fixedly connected to the top of the furfural refining tower (1), and the annular cooling tower body (2) is communicated with the furfural refining tower (1), a cooling wall (24) is provided on the inner side wall of the annular cooling tower body (2), a spiral cooling channel (27) is provided inside the annular cooling tower body (2) outside the cooling wall (24), and water is fed into the spiral cooling channel (27) The annular cooling tower body (2) at the end thereof is fixedly connected to a water inlet pipe (21); the annular cooling tower body (2) at the water outlet end of the spiral cooling channel (27) is fixedly connected to a water outlet pipe (22); the cooling wall (24) is fixedly connected to a cooling fin (25); an annular guide groove (26) is provided in the annular cooling tower body (2) below the cooling wall (24); a drain pipe (23) is fixedly connected to the bottom of the annular cooling tower body (2), and the drain pipe (23) is communicated with the bottom of the annular guide groove (26); the top of the annular cooling tower body (2) is fixedly connected to a tower top (3), and the tower top (3) is communicated with the inside of the annular cooling tower body (2); and an air outlet pipe (31) is fixedly provided at the top of the tower top (3).

2. A furfural refining equipment according to claim 1, characterized in that, The feed pipe (11), the discharge pipe (12), the liquid discharge pipe (23) and the air outlet pipe (31) are all sleeved and fixed with valves that match them.

3. A furfural refining equipment according to claim 2, characterized in that, A control panel (4) is fixedly mounted on the outer wall of the furfural refining tower (1), and the control panel (4) is electrically connected to an external power supply via a wire.

4. A furfural refining equipment according to claim 1, characterized in that, Support legs (13) are symmetrically and fixedly connected to the bottom of the furfural refining tower (1).

5. A furfural refining equipment according to claim 1, characterized in that, A plurality of cooling fins (25) are arranged on the inner wall of the cooling wall (24) in a ring array along the cooling wall (24).

6. A furfural refining equipment according to claim 5, characterized in that: The height of the cooling fins (25) is the same as the height of the cooling wall (24).

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