Improved furfural raffinate recovery kettle

Abstract

The utility model relates to the technical field of furfural processing and production equipment, and discloses an improved furfural raffinate recovery kettle which comprises a recovery mechanism, a purification mechanism and a collection mechanism, the recycling mechanism comprises a tank body, a heating piece is arranged in the tank body, a rotating rod is rotationally connected to the interior of the tank body, scraping plates are fixedly connected to the left side and the right side of the rotating rod, a motor is fixedly connected to the top end of the rotating rod, a feeding pipe is fixedly connected to the left side of the tank body, and supporting legs and a discharging pipe are fixedly connected to the bottom of the tank body; the inner wall of the discharge pipe is fixedly connected with a switch valve; the purification mechanism comprises an exhaust pipe, a first air valve is fixedly connected to the inner wall of the exhaust pipe, a purification frame is in threaded connection with the top end of the exhaust pipe, and a zeolite layer and an activated carbon layer are arranged in the purification frame. According to the improved furfural residual liquid recovery kettle, the recovery quality of furfural residual liquid is improved, the content of harmful substances in waste gas is reduced, the environment-friendly emission standard is met, and pollution to the environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of furfural processing and production equipment, in particular to an improved furfural residual liquid recovery kettle. Background Art

[0002] Furfural is an important organic chemical raw material. It can be used to prepare maleic anhydride, oxalic acid, furfuryl alcohol, tetrahydrofuran, and can also be used to synthesize furfural resin, furan resin, rubber vulcanization accelerator, rubber and plastic antioxidant, preservatives, etc. It is mainly used in medicine, pesticides, veterinary drugs and food industries. The main raw materials for furfural production are agricultural and sideline products such as corn cobs.

[0003] According to the "A Furfural Residual Liquid Recovery Kettle" disclosed in Chinese Patent Publication No. CN218130007U, the invention comprises a bracket, a cleaning structure is fixedly installed on the top of the bracket, which is convenient for operators to clean the furfural mud on the surface of the cleaning plate and the bottom of the cover, thereby reducing the difficulty of the operator to clean the device and increasing the convenience of the device; one side of the cleaning structure is fixedly connected with a furfural recovery structure, and the vaporized furfural is affected by the low temperature of the liquid nitrogen inside the liquid nitrogen tube, so that the temperature of the vaporized furfural is reduced and cannot meet the vaporization temperature requirement, thereby making the vaporized furfural return to a normal state and liquefy inside the collection tank, which not only prevents the residual furfural from being directly discharged into nature and causing damage to the natural environment, but also caters to the concept of green and environmental protection development in today's era, and the residual furfural can be re-extracted, thereby greatly reducing the waste of furfural and improving the production efficiency of furfural.

[0004] When furfural residual liquid is heated, a large amount of waste gas will be generated by the furfural residual liquid. The above-mentioned device does not process the waste gas, which will not only affect the quality of furfural residual liquid recovery, but also cause environmental pollution. Utility Model Content

[0005] In view of the above technical deficiencies, the purpose of the utility model is to provide an improved furfural residual liquid recovery kettle, improve the quality of furfural residual liquid recovery, reduce the content of harmful substances in the exhaust gas, meet environmental emission standards, and reduce pollution to the environment.

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

[0007] An improved furfural residual liquid recovery kettle comprises a recovery mechanism, a purification mechanism is arranged on the top of the recovery mechanism, and a collection mechanism is arranged on the right side of the recovery mechanism;

[0008] The recycling mechanism comprises a tank body, a heating plate is arranged inside the tank body, a rotating rod is rotatably connected inside the tank body, scrapers are fixedly connected to the left and right sides of the rotating rod, a motor is fixedly connected to the top of the rotating rod, a feed pipe is fixedly connected to the left side of the tank body, a support leg and a discharge pipe are fixedly connected to the bottom of the tank body, and a switch valve is fixedly connected to the inner wall of the discharge pipe;

[0009] The purification mechanism comprises an exhaust pipe, the inner wall of which is fixedly connected to a first air valve, the top end of which is threadedly connected to a purification frame, and a zeolite layer and an activated carbon layer are arranged inside the purification frame.

[0010] Specifically, through the above technical scheme, the furfural sludge to be treated is firstly put into the tank body through the feed pipe, and then the motor is started to drive the rotating rod to rotate, and the rotating rod drives the scraper to scrape the inner wall of the tank body to prevent the material from agglomerating or adhering. At the same time, the heating plate starts to work to provide a heat source for the furfural sludge in the tank body, and the first air valve in the exhaust pipe is opened. When the furfural sludge is heated, the exhaust gas generated in the tank body is discharged through the exhaust pipe, and is adsorbed and filtered by the zeolite layer and the activated carbon layer in the purification frame. After the harmful substances are removed, it is discharged into the environment. When the temperature heated by the heating plate is about to reach the boiling point of furfural, the first air valve is closed to improve the quality of furfural residual liquid recovery, reduce the content of harmful substances in the exhaust gas, meet environmental protection emission standards, and reduce pollution to the environment.

[0011] Preferably, the motor is fixedly connected to the top of the tank body, and one side of the scraper is in contact with the inner wall of the tank body.

[0012] Preferably, three supporting legs are provided, and anti-sliding blocks are fixedly connected to the bottoms of the three supporting legs.

[0013] Preferably, the exhaust pipe is fixedly connected to the top of the tank body, and a plurality of exhaust holes are provided on the top of the purification frame.

[0014] Preferably, the collecting mechanism comprises a delivery pipe, a second air valve is fixedly connected to the inner wall of the delivery pipe, a vacuum pump is fixedly connected to the right side of the delivery pipe, a connecting pipe is fixedly connected to the right side of the vacuum pump, a liquid nitrogen pipe is arranged on the outer wall of the connecting pipe, and a collection frame is plugged into the end of the connecting pipe away from the vacuum pump.

[0015] Preferably, the delivery pipe is fixedly connected to the right side of the tank body.

[0016] Preferably, a sealing gasket is provided at the connection between the connecting pipe and the collecting frame.

[0017] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0018] First, the furfural sludge to be treated is put into the tank through the feed pipe, and then the motor is started to drive the rotating rod to rotate. The rotating rod drives the scraper to scrape the inner wall of the tank to prevent the material from caking or adhering. At the same time, the heating plate starts to work to provide a heat source for the furfural sludge in the tank. The first air valve in the exhaust pipe is opened. The exhaust gas generated in the tank when the furfural sludge is heated is discharged through the exhaust pipe, and is adsorbed and filtered by the zeolite layer and the activated carbon layer in the purification frame to remove harmful substances before being discharged into the environment. When the temperature heated by the heating plate is about to reach the boiling point of furfural, the first air valve is closed to improve the quality of furfural residual liquid recovery, reduce the content of harmful substances in the exhaust gas, meet environmental protection emission standards, and reduce pollution to the environment.

[0019] Second, open the second gas valve, and the furfural gas after purification is transmitted to the collecting mechanism through the conveying pipe for further processing or collection. The furfural gas is sucked into the connecting pipe by the vacuum pump, and the furfural gas is cooled by the liquid nitrogen pipe on the outer wall of the connecting pipe. The vaporized furfural is affected by the low temperature of the liquid nitrogen inside the liquid nitrogen pipe, so that the temperature of the vaporized furfural is reduced and cannot meet the vaporization temperature requirement, thereby making the vaporized furfural return to a normal state and liquefy inside the collecting frame. The sealing gasket between the collecting frame and the connecting pipe can effectively prevent gas leakage, ensure the smooth progress of the collection process, and make the treated furfural gas be conveniently and quickly collected and processed, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the recycling mechanism of the utility model;

[0022] Figure 3 This is a schematic diagram of the purification mechanism structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the explosion structure of the purification mechanism of the utility model;

[0024] Figure 5 It is a schematic diagram of the collection mechanism structure of the utility model.

[0025] Wherein: 1. Recovery mechanism; 101. Tank body; 103. Rotating rod; 104. Scraper; 105. Motor; 106. Feed pipe; 107. Support leg; 108. Discharge pipe; 109. Switch valve; 2. Purification mechanism; 201. Exhaust pipe; 202. First air valve; 203. Purification frame; 204. Zeolite layer; 205. Activated carbon layer; 3. Collection mechanism; 301. Delivery pipe; 302. Second air valve; 303. Vacuum pump; 304. Connecting pipe; 305. Liquid nitrogen pipe; 306. Collection frame; 307. Sealing pad. DETAILED DESCRIPTION

[0026] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings.

[0027] An improved furfural residual liquid recovery kettle, please refer to Figure 1-5 , including a recycling mechanism 1, a purification mechanism 2 is arranged on the top of the recycling mechanism 1, and a collection mechanism 3 is arranged on the right side of the recycling mechanism 1;

[0028] The recycling mechanism 1 includes a tank body 101, a heating plate is arranged inside the tank body 101, a rotating rod 103 is rotatably connected inside the tank body 101, scrapers 104 are fixedly connected to the left and right sides of the rotating rod 103, a motor 105 is fixedly connected to the top of the rotating rod 103, a feed pipe 106 is fixedly connected to the left side of the tank body 101, a support leg 107 and a discharge pipe 108 are fixedly connected to the bottom of the tank body 101, and a switch valve 109 is fixedly connected to the inner wall of the discharge pipe 108;

[0029] The purification mechanism 2 comprises an exhaust pipe 201 , the inner wall of which is fixedly connected with a first air valve 202 , the top of which is threadedly connected with a purification frame 203 , and the purification frame 203 is provided with a zeolite layer 204 and an activated carbon layer 205 inside.

[0030] Through the above technical scheme, the furfural sludge to be treated is firstly put into the tank body 101 through the feed pipe 106, and then the motor 105 is started to drive the rotating rod 103 to rotate, and the rotating rod 103 drives the scraper 104 to scrape the inner wall of the tank body 101 to prevent the material from agglomerating or adhering. At the same time, the heating plate starts to work to provide a heat source for the furfural sludge in the tank body 101, and the first air valve 202 in the exhaust pipe 201 is opened. When the furfural sludge is heated, the exhaust gas generated in the tank body 101 is discharged through the exhaust pipe 201, and is adsorbed and filtered by the zeolite layer 204 and the activated carbon layer 205 in the purification frame 203. The harmful substances therein are removed and then discharged into the environment. When the temperature heated by the heating plate is about to reach the boiling point of furfural, the first air valve 202 is closed to improve the quality of furfural residual liquid recovery, reduce the content of harmful substances in the exhaust gas, meet environmental protection emission standards, and reduce pollution to the environment.

[0031] Specifically, the motor 105 is fixedly connected to the top of the tank body 101 , and one side of the scraper 104 is in contact with the inner wall of the tank body 101 .

[0032] Through the above technical solution, by fixing the motor 105 at the top of the tank body 101, the motor 105 can drive the rotating rod 103 to rotate, and the outer sides of the two scrapers 104 are in contact with the inner wall of the tank body 101, so that the scrapers 104 can scrape off the materials attached to the inner wall of the tank body 101.

[0033] Specifically, three supporting legs 107 are provided, and anti-sliding blocks are fixedly connected to the bottoms of the three supporting legs 107 .

[0034] Through the above technical solution, the three supporting legs 107 are located at the bottom of the tank body 101 to form a triangular supporting structure, which supports and stabilizes the tank body 101 to prevent it from shaking or tipping over during use. The anti-sliding block increases the friction with the ground and improves stability.

[0035] Specifically, the exhaust pipe 201 is fixedly connected to the top of the tank body 101 , and a plurality of exhaust holes are opened on the top of the purification frame 203 .

[0036] Through the above technical solution, the exhaust pipe 201 is a metal pipe connected to the top of the tank body 101, which is used to discharge the exhaust gas generated during the heating process. The multiple exhaust holes opened on the top of the purification frame 203 are convenient for discharging the filtered exhaust gas.

[0037] Specifically, the collecting mechanism 3 includes a delivery pipe 301, a second air valve 302 is fixedly connected to the inner wall of the delivery pipe 301, an air pump 303 is fixedly connected to the right side of the delivery pipe 301, a connecting pipe 304 is fixedly connected to the right side of the air pump 303, a liquid nitrogen pipe 305 is arranged on the outer wall of the connecting pipe 304, and a collecting frame 306 is inserted into the end of the connecting pipe 304 away from the air pump 303.

[0038] Through the above technical solution, the second air valve 302 is opened, and the furfural gas after purification is transmitted to the collecting mechanism 3 through the conveying pipe 301 for further processing or collection. The furfural gas is sucked into the connecting pipe 304 by the vacuum pump 303, and the furfural gas is cooled by the liquid nitrogen pipe 305 on the outer wall of the connecting pipe 304. The vaporized furfural is affected by the low temperature of the liquid nitrogen inside the liquid nitrogen pipe 305, so that the temperature of the vaporized furfural is reduced and cannot meet the vaporization temperature requirement, thereby making the vaporized furfural return to a normal state and liquefy inside the collecting frame 306. The sealing gasket 307 between the collecting frame 306 and the connecting pipe 304 can effectively prevent gas leakage, ensure the smooth progress of the collection process, and make the treated furfural gas be conveniently and quickly collected and processed, thereby improving work efficiency.

[0039] Specifically, the delivery pipe 301 is fixedly connected to the right side of the tank body 101 .

[0040] Through the above technical solution, the delivery pipe 301 is fixed on the right side of the tank body 101 to facilitate the steam generated when the furfural inside the furfural sludge in the tank body 101 reaches the boiling point to be transported to the collection frame 306 through the delivery pipe 301.

[0041] Specifically, a sealing gasket 307 is provided at the connection between the connecting pipe 304 and the collecting frame 306 .

[0042] Through the above technical solution, the sealing gasket 307 provided at the connection between the connecting tube 304 and the collecting frame 306 can allow the connecting tube 304 to be inserted into the collecting frame 306 and then fit the sealing gasket 307 against the outer wall of the connecting tube 304 to prevent the collecting frame 306 from leaking.

[0043] When in use, the furfural mud to be treated is firstly put into the tank body 101 through the feed pipe 106. The heating plate is connected with the internal circuits of the motor 105 and the vacuum pump 303, which are all prior art and will not be described in detail here. Then, the motor 105 is started to drive the rotating rod 103 to rotate. The rotating rod 103 drives the scraper 104 to scrape the inner wall of the tank body 101 to prevent the material from agglomerating or adhering. At the same time, the heating plate starts to work to provide a heat source for the furfural mud in the tank body 101. The first air valve 202 and the second air valve 302 are both prior art and will not be described in detail here. The first air valve 202 in the exhaust pipe 201 is opened. The exhaust gas generated in the tank body 101 when the furfural mud is heated is discharged through the exhaust pipe 201, and is adsorbed and filtered by the zeolite layer 204 and the activated carbon layer 205 in the purification frame 203 to remove harmful substances therein. After being purified, the furfural is discharged into the environment. When the temperature heated by the heating plate is about to reach the boiling point of furfural, the first air valve 202 is closed and the second air valve 302 is opened. The furfural gas after purification is transmitted to the collecting mechanism 3 through the conveying pipe 301 for further processing or collection. The furfural gas is sucked into the connecting pipe 304 by the air pump 303, and the furfural gas is cooled by the liquid nitrogen pipe 305 on the outer wall of the connecting pipe 304. The vaporized furfural is affected by the low temperature of the liquid nitrogen in the liquid nitrogen pipe 305, so that the temperature of the vaporized furfural is reduced and cannot meet the temperature requirement of vaporization, thereby making the vaporized furfural return to a normal state and liquefy in the collecting frame 306. The sealing pad 307 between the collecting frame 306 and the connecting pipe 304 can effectively prevent gas leakage, ensure the smooth progress of the collection process, and complete the recovery of the furfural residual liquid.

[0044] Although specific embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An improved furfural residual liquid recovery kettle, comprising a recovery mechanism (1), characterized in that: A purification mechanism (2) is arranged on the top of the recovery mechanism (1), and a collection mechanism (3) is arranged on the right side of the recovery mechanism (1); The recycling mechanism (1) comprises a tank body (101), a heating plate is arranged inside the tank body (101), a rotating rod (103) is rotatably connected inside the tank body (101), scrapers (104) are fixedly connected to the left and right sides of the rotating rod (103), a motor (105) is fixedly connected to the top of the rotating rod (103), a feed pipe (106) is fixedly connected to the left side of the tank body (101), a supporting leg (107) and a discharge pipe (108) are fixedly connected to the bottom of the tank body (101), and a switch valve (109) is fixedly connected to the inner wall of the discharge pipe (108); The purification mechanism (2) comprises an exhaust pipe (201), the inner wall of the exhaust pipe (201) being fixedly connected to a first air valve (202), the top end of the exhaust pipe (201) being threadedly connected to a purification frame (203), and a zeolite layer (204) and an activated carbon layer (205) being arranged inside the purification frame (203).

2. The improved furfural residual liquid recovery kettle according to claim 1, characterized in that: The motor (105) is fixedly connected to the top of the tank body (101), and one side of the scraper (104) is in contact with the inner wall of the tank body (101).

3. The improved furfural residual liquid recovery kettle according to claim 1, characterized in that: Three supporting legs (107) are provided, and anti-sliding blocks are fixedly connected to the bottoms of the three supporting legs (107).

4. The improved furfural residual liquid recovery kettle according to claim 1, characterized in that: The exhaust pipe (201) is fixedly connected to the top of the tank body (101), and a plurality of exhaust holes are provided on the top of the purification frame (203).

5. The improved furfural residual liquid recovery kettle according to claim 1, characterized in that: The collecting mechanism (3) comprises a conveying pipe (301), the inner wall of the conveying pipe (301) being fixedly connected to a second gas valve (302), the right side of the conveying pipe (301) being fixedly connected to an air pump (303), the right side of the air pump (303) being fixedly connected to a connecting pipe (304), the outer wall of the connecting pipe (304) being provided with a liquid nitrogen pipe (305), and the end of the connecting pipe (304) away from the air pump (303) being plugged with a collecting frame (306).

6. The improved furfural residual liquid recovery kettle according to claim 5, characterized in that: The delivery pipe (301) is fixedly connected to the right side of the tank body (101).

7. The improved furfural residual liquid recovery kettle according to claim 5, characterized in that: A sealing gasket (307) is provided at the connection between the connecting pipe (304) and the collecting frame (306).

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