A waste heat recovery device for sucralose

Abstract

This utility model relates to the field of waste heat recovery technology, specifically a waste heat recovery and utilization device for sucralose, including an inlet tank, a heat exchange tank, and an outlet tank. A cool water outlet pipe is connected to the outlet tank. The top and bottom surfaces of the heat exchange tank are respectively connected to a mother liquor inlet pipe and a mother liquor outlet pipe. The mother liquor outlet pipe is vertical and connected to an upper horizontal pipe closed at both ends. The upper horizontal pipe is connected to a first vertical pipe and a second vertical pipe. A filter screen is installed inside the first vertical pipe, and its other end is connected to the reactor inlet pipe. The first vertical pipe is detachably connected between the upper and lower horizontal pipes. Valves are installed on both sides of the mother liquor outlet pipe on the upper horizontal pipe. By using a fixed scraper and a rotatable heat exchange tube, the surface of the heat exchange tube can be cleaned during rotation, removing blockages and ensuring heat exchange efficiency. Simultaneously, after cleaning away the crystals, they can be removed to prevent them from entering the reactor and affecting its normal reaction.

Description

Technical Field

[0001] This utility model belongs to the field of waste heat recovery technology, specifically a waste heat recovery and utilization device for sucralose. Background Technology

[0002] In the food additive industry, sucralose, as a high-performance, calorie-free sweetener, has a crucial crystallization stage in its production process. During this stage, the sucralose solution, after crystallization and separation, produces a large amount of high-temperature mother liquor at 70-85°C. This mother liquor is rich in incompletely converted sucrose ester residues and a small amount of sucralose solute, possessing significant waste heat value. If this heat energy can be efficiently recovered for preheating raw materials or driving other process steps, production energy consumption and operating costs can be significantly reduced.

[0003] The heat exchange process of sucralose involves the sucralose mother liquor flowing out of the reactor and entering the heat exchanger. After heat exchange, it re-enters the reactor, while the hot water in the heat exchanger enters the required heating zone. During heat exchange, the mother liquor (70~85℃) produced in the reactor contains sucrose ester residues, which are prone to crystallization on the heat exchange surface, thus leading to poor heat conduction. Utility Model Content

[0004] This invention provides a waste heat recovery and utilization device for sucralose, which addresses the deficiencies in the prior art.

[0005] This utility model is achieved through the following technical solution:

[0006] A waste heat recovery device for sucralose includes an inlet tank, a heat exchange tank, and an outlet tank arranged sequentially. Multiple heat exchange tubes are arranged in parallel within the heat exchange tank, with both ends of each tube extending out from the corresponding side of the heat exchange tank and entering the corresponding inlet and outlet tanks. The heat exchange tubes are rotatably connected to the inlet, outlet, and heat exchange tanks via sealed bearings. A scraper is fixedly installed inside the heat exchange tank, and the scraper is in contact with the side of the corresponding heat exchange tube. The inlet tank is connected to a cool water inlet pipe, and the outlet tank is connected to cool water. The mother liquor inlet pipe and the mother liquor outlet pipe are connected to the top and bottom surfaces of the heat exchanger, respectively. The mother liquor outlet pipe is vertical and connected to an upper horizontal pipe that is closed at both ends. The upper horizontal pipe is connected to a first vertical pipe and a second vertical pipe. A filter screen is installed inside the first vertical pipe. The first vertical pipe and the second vertical pipe are connected downward to a lower horizontal pipe. One end of the lower horizontal pipe is closed, and the other end is connected to the reactor inlet pipe. The first vertical pipe is detachably connected between the upper horizontal pipe and the lower horizontal pipe. Valves are installed on both sides of the mother liquor outlet pipe on the upper horizontal pipe.

[0007] In operation, cool water enters the inlet tank through the inlet pipe, then flows into the heat exchange tubes. After heat exchange, the water enters the outlet tank and flows into the outlet pipe, which then supplies the required heating. Hot mother liquor enters the heat exchange tank through the mother liquor inlet pipe, exchanges heat, and then enters the mother liquor outlet pipe. From there, it flows into the upper horizontal pipe, the second vertical pipe, and the lower horizontal pipe, eventually entering the reactor from the lower horizontal pipe. After a period of circulation, the valve is controlled to allow all the mother liquor to enter the first vertical pipe. The heat exchange tubes are then rotated, scraping the surface of the rotating tubes within the scraper, thus removing crystals from the tube surface. These crystals then enter the first vertical pipe with the mother liquor and are collected by the filter. After a period of collection, the valve is controlled again to allow the liquid to enter the second vertical pipe. The first vertical pipe is then disassembled, and the crystals are poured out, achieving crystal recovery and preventing them from entering the reactor and affecting its normal reaction.

[0008] Preferably, the upper and lower parts of the first vertical pipe are detachably and fixedly connected to the upper and lower horizontal pipes via flanges, thus enabling better detachable connection of the first vertical pipe through flanges.

[0009] Preferably, a filter screen is horizontally arranged inside the first vertical tube, and a vertical rod is vertically connected to the filter screen. A horizontal rod is vertically connected to the lower end of the vertical rod, and the horizontal rod is located at the lower edge of the first vertical tube and bends downward to form a connecting rod. The connecting rod is connected to the first vertical tube by bolts. The bolts allow the horizontal rod to be removed from the first vertical tube, thereby enabling the filter screen to be disassembled and cleaned.

[0010] Preferably, multiple partitions are arranged in parallel inside the heat exchange box, and through holes are provided on the partitions. The through holes between adjacent partitions are respectively located at the upper and lower parts of the partition. Through the design of the partitions and through holes, the mother liquor can be retained for a longer time, achieving better heat exchange.

[0011] Preferably, a driven gear is fitted onto the heat exchange tube, and the driven gears mesh with each other. A drive motor is fixedly installed on the outlet tank, and a drive gear is fitted onto the drive motor shaft. The drive gear meshes with any of the driven gears. The rotation of the drive motor shaft drives the drive gear to rotate, which in turn drives the corresponding driven gear to rotate, and thus all the driven gears rotate, thereby realizing the rotation of the heat exchange tube.

[0012] The beneficial effects of this utility model are as follows: By setting a fixed scraper and a rotatable heat exchange tube, the surface of the heat exchange tube can be cleaned when the heat exchange tube rotates, and the blockage on the surface of the heat exchange tube can be removed, thereby ensuring its heat exchange effect. At the same time, after cleaning the crystals, the crystals can be removed to prevent them from entering the reactor and affecting its normal reaction. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] As shown in the figure:

[0016] 1. Inlet tank, 2. Heat exchanger, 3. Outlet tank, 4. Heat exchanger tube, 5. Upper horizontal tube, 6. Lower horizontal tube, 7. First vertical tube, 8. Second vertical tube, 9. Valve, 10. Filter screen, 11. Baffle, 12. Drive gear, 13. Driven gear, 14. Drive motor, 15. Scraper. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] A waste heat recovery device for sucralose, such as Figure 1 As shown. It includes an inlet tank 1, a heat exchange tank 2, and an outlet tank 3 arranged sequentially. Multiple heat exchange tubes 4 are arranged in parallel inside the heat exchange tank 2. The two ends of each heat exchange tube 4 extend out from the corresponding side of the heat exchange tank 2 and enter the corresponding inlet tank 1 and outlet tank 3. The heat exchange tubes 4 are rotatably connected to the inlet tank 1, outlet tank 3, and heat exchange tank 2 via sealed bearings. A scraper 15 is fixedly installed inside the heat exchange tank 2, and the scraper 15 is in contact with the side of the corresponding heat exchange tube 4. The inlet tank 1 is connected to a cool water inlet pipe, and the outlet tank 3 is connected to a cool water outlet pipe. The top and bottom surfaces of the heat exchange tank 2 are respectively... The system connects the mother liquor inlet pipe and the mother liquor outlet pipe. The mother liquor outlet pipe is vertical and connected to an upper horizontal pipe 5, which is closed at both ends. The upper horizontal pipe 5 is connected to a first vertical pipe 7 and a second vertical pipe 8. A filter screen 10 is installed inside the first vertical pipe 7. The first vertical pipe 7 and the second vertical pipe 8 are connected downwards to a lower horizontal pipe 6, which is closed at one end and connected to the reactor inlet pipe at the other end. The upper and lower parts of the first vertical pipe 7 are detachably and fixedly connected to the upper horizontal pipe 5 and the lower horizontal pipe 6 via flanges. The flanges on the first vertical pipe 7 enable better detachable connection. Valves 9 are installed on both sides of the mother liquor outlet pipe on the upper horizontal pipe 5.

[0019] In use, cool water enters the inlet tank 1 through the inlet pipe, then enters the heat exchange tube 4, exchanges heat with the tube, and enters the outlet tank 3. From the outlet tank 3, water flows into the outlet pipe, which then flows to the desired heating point. Meanwhile, the hot mother liquor enters the heat exchange tank 2 through the mother liquor inlet pipe, exchanges heat, and then enters the mother liquor outlet pipe. From the mother liquor outlet pipe, it flows into the upper horizontal pipe 5, the second vertical pipe 8, and the lower horizontal pipe 6, and finally into the reactor through the lower horizontal pipe 6. After a period of circulation, valve 9 is controlled to allow all the mother liquor to enter the first vertical pipe 7. Then, the heat exchange tube 4 is rotated. This rotation scrapes the surface of the rotating tube within the scraper 15, clearing the crystals from the surface of the heat exchange tube 4. The crystals then enter the first vertical pipe 7 with the mother liquor and are collected by the filter screen 10. After a period of collection, valve 9 is controlled again to allow the liquid to enter the second vertical pipe 8. The first vertical pipe 7 is then disassembled, and the crystals are poured out, achieving crystal recovery and preventing them from entering the reactor and affecting its normal reaction.

[0020] Preferably, a filter screen 10 is horizontally arranged inside the first vertical tube 7. A vertical rod is vertically connected to the filter screen 10, and a horizontal rod is vertically connected to the lower end of the vertical rod. The horizontal rod is located at the lower edge of the first vertical tube 7 and bends downward to form a connecting rod. The connecting rod is connected to the first vertical tube 7 by bolts. The bolts allow the horizontal rod to be removed from the first vertical tube 7, thereby enabling the filter screen 10 to be disassembled and cleaned.

[0021] Multiple partitions 11 are arranged in parallel inside the heat exchange box 2. Each partition 11 has a through hole, with the through holes between adjacent partitions 11 located at the top and bottom of the partition 11, respectively. The design of the partitions 11 and the through holes enables a longer retention time of the mother liquor and achieves better heat exchange.

[0022] A driven gear 13 is sleeved on the heat exchange tube 4, and the driven gears 13 mesh with each other. A drive motor 14 is fixedly installed on the water outlet tank 3, and a drive gear 12 is sleeved on the shaft of the drive motor 14. The drive gear 12 meshes with any of the driven gears 13. The rotation of the drive motor 14 shaft drives the drive gear 12 to rotate, and the rotation of the drive gear 12 drives the corresponding driven gear 13 to rotate, thereby rotating all the driven gears 13 and realizing the rotation of the heat exchange tube 4.

[0023] The use of this application, by setting a fixed scraper 15 and a rotatable heat exchange tube 4, enables the surface of the heat exchange tube 4 to be cleaned when the heat exchange tube 4 rotates, thereby removing the blockages on the surface of the heat exchange tube 4 and ensuring its heat exchange effect. At the same time, after cleaning off the crystals, the crystals can be removed to prevent them from entering the reactor and affecting its normal reaction.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sucralose waste heat recovery and utilization device, characterized in that: The system includes an inlet tank, a heat exchange tank, and an outlet tank arranged sequentially. Multiple heat exchange tubes are arranged in parallel within the heat exchange tank, with both ends of each tube extending from the corresponding side of the tank and entering the corresponding inlet and outlet tanks. The heat exchange tubes are rotatably connected to the inlet, outlet, and heat exchange tanks via sealed bearings. A scraper is fixedly installed inside the heat exchange tank, fitting snugly against the side of the corresponding heat exchange tube. A cool water inlet pipe connects to the inlet tank, and a cool water outlet pipe connects to the outlet tank. The top and bottom surfaces of the heat exchange tank are connected to a mother liquor inlet pipe and a mother liquor outlet pipe, respectively. The mother liquor outlet pipe is vertical and connected to an upper horizontal pipe that is closed at both ends. The upper horizontal pipe connects to a first vertical pipe and a second vertical pipe. A filter screen is installed inside the first vertical pipe. The first and second vertical pipes connect downwards to a lower horizontal pipe, which is closed at one end and connected to the reactor inlet pipe at the other end. The first vertical pipe is detachably connected between the upper and lower horizontal pipes. Valves are installed on both sides of the mother liquor outlet pipe on the upper horizontal pipe.

2. The sucralose waste heat recovery and utilization device according to claim 1, characterized in that: The upper and lower parts of the first vertical pipe are detachably and fixedly connected to the upper and lower horizontal pipes via flanges.

3. The sucralose waste heat recovery and utilization device according to claim 2, characterized in that: A filter screen is horizontally installed inside the first vertical tube. A vertical rod is vertically connected to the filter screen. A horizontal rod is vertically connected to the lower end of the vertical rod. The horizontal rod is located at the lower edge of the first vertical tube and is bent downward to form a connecting rod. The connecting rod is connected to the first vertical tube by bolts.

4. The sucralose waste heat recovery and utilization device according to claim 1, characterized in that: The heat exchange box has multiple partitions arranged in parallel inside, and the partitions have through holes. The through holes between two adjacent partitions are respectively located at the upper and lower parts of the partition.

5. The sucralose waste heat recovery and utilization device according to claim 1, characterized in that: A driven gear is sleeved on the heat exchange tube, and the driven gears mesh with each other. A drive motor is fixedly installed on the water outlet tank, and a drive gear is sleeved on the shaft of the drive motor. The drive gear meshes with any of the driven gears.

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