Heat exchange system of spiral-plate heat exchanger

Abstract

The utility model belongs to the technical field of malt syrup production and processing, and particularly relates to a heat exchange system of a spiral-plate heat exchanger, which comprises a third-time liquefaction flash tank, a water cooling tower arranged on one side of the third-time liquefaction flash tank and used for cooling malt syrup in the third-time liquefaction flash tank, and a spiral-plate heat exchanger arranged on the other side of the third-time liquefaction flash tank, a saccharification enzyme adding tank for storing malt syrup is arranged on one side of the water cooling tower, a cooling device is arranged between the liquefaction tertiary flash tank and the water cooling tower, and the cooling device comprises a first cooling assembly, a second cooling assembly, a third cooling assembly and a decolorizing assembly; through the cooperation of the first cooling assembly, the second cooling assembly, the third cooling assembly, the decolorizing assembly and other structures, the cooling load of the water cooling tower can be reduced, the stability of the saccharification feeding temperature is improved, the disassembly and washing frequency of the heat exchanger can be reduced, the continuous production time of a workshop is prolonged, and the production efficiency is improved. Meanwhile, heating of the materials before decoloration by using steam can be reduced or avoided, and the production cost of a workshop is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of maltose syrup production and processing, and specifically relates to a heat exchange system of a spiral plate heat exchanger. Background Art

[0002] Maltose syrup is made from high-quality starch through liquefaction, saccharification, decolorization, filtration, and refined concentration. It is a product with maltose as the main ingredient. When processing maltose syrup, a spiral plate heat exchanger system is required to cool the maltose syrup.

[0003] In the existing production and processing of maltose syrup, the temperature of the liquefied liquid of maltose syrup is still relatively high after three flash evaporations, and it is generally cooled by a cooling tower. In summer, due to the high temperature, the circulating cooling water temperature of the cooling tower is relatively high, and it is difficult to cool down the material, which affects the stability of the saccharification feed temperature. In addition, there are many proteins in the liquefied liquid, and the flow channel of the conventional plate heat exchanger is too narrow, and the heat exchanger is easily blocked. The heat exchanger plates need to be disassembled and cleaned many times, which reduces the continuous production time of the workshop. At the same time, the material temperature before the decolorization process of the maltose syrup is relatively low, and the material in the pre-decolorization tank needs to be heated with steam before entering the decolorization tank, resulting in high steam consumption per ton of sugar, which increases the production cost.

[0004] In order to solve the above problems, a spiral plate heat exchanger heat exchange system is proposed in this application. Utility Model Content

[0005] To solve the problems raised in the above background technology. The utility model provides a spiral plate heat exchanger heat exchange system, which can reduce the cooling load of the cooling tower, improve the stability of the saccharification feed temperature, reduce the frequency of heat exchanger disassembly and cleaning, extend the continuous production time of the workshop, and reduce or avoid the use of steam to heat the material before decolorization, thereby reducing the production cost of the workshop.

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

[0007] Spiral plate heat exchanger heat exchange system, including:

[0008] A liquefaction triple flash tank, wherein a cooling tower for cooling the maltose syrup inside the liquefaction triple flash tank is disposed on one side of the liquefaction triple flash tank, and a saccharification enzyme tank for storing the maltose syrup is disposed on one side of the cooling tower;

[0009] A cooling device is provided between the liquefied tertiary flash tank and the cooling tower, wherein the cooling device comprises a first cooling assembly, a second cooling assembly and a third cooling assembly, wherein the third cooling assembly comprises a spiral heat exchanger body, and the maltose syrup inside the liquefied tertiary flash tank flows into the cold flow pipe of the spiral heat exchanger body through a pipeline.

[0010] As a preferred embodiment of the heat exchange system of the spiral plate heat exchanger of the utility model, the first cooling component includes a main plate heat exchanger, the feed pipe of the main plate heat exchanger is connected to the liquefaction tertiary flash tank, and the discharge pipe of the main plate heat exchanger is connected to the feed port of the cold flow pipe inside the spiral heat exchanger body, the main plate heat exchanger and the cooling tower are connected by a first water pipe, the maltose syrup inside the liquefaction tertiary flash tank flows into the main plate heat exchanger for preliminary cooling, and the maltose syrup inside the main plate heat exchanger enters the interior of the spiral heat exchanger body to complete secondary cooling.

[0011] As a preferred heat exchange system of the spiral plate heat exchanger of the utility model, the second cooling component includes a sub-plate heat exchanger, the feed end of the sub-plate heat exchanger is connected to the discharge port of the cold flow pipe inside the spiral heat exchanger body, and the discharge end of the sub-plate heat exchanger is connected to the saccharification enzyme tank, the sub-plate heat exchanger and the cooling tower are connected by a second water pipe, the maltose syrup inside the spiral heat exchanger body flows into the interior of the sub-plate heat exchanger for three cooling, and after the maltose syrup inside the sub-plate heat exchanger is cooled, it enters the interior of the saccharification enzyme tank for storage.

[0012] As a preferred heat exchange system of the spiral plate heat exchanger of the utility model, a decolorization tank and a pre-decolorization tank are respectively arranged on both sides of the spiral heat exchanger body, the feed port of the heat flow pipe inside the spiral heat exchanger body is connected to the pre-decolorization tank, and the discharge port of the heat flow pipe inside the spiral heat exchanger body is connected to the decolorization tank, and after the hot flow pipe inside the spiral heat exchanger body performs heat exchange with the cold flow pipe, the material inside the cold flow pipe is heated.

[0013] As a preferred embodiment of the heat exchange system of the spiral plate heat exchanger of the utility model, a mixing device is arranged inside the cooling tower, and the mixing device includes a motor fixed on the cooling tower and a lifting frame arranged inside the cooling tower, a half gear is installed on the output end of the motor, and two transmission gears meshing with the half gears are symmetrically fixed on the outer wall of the transmission rod, and two connecting ropes are arranged between the transmission rod and the lifting frame.

[0014] As a preferred embodiment of the heat exchange system of the spiral plate heat exchanger of the utility model, a cross bar is fixed in the middle of the lifting frame, and one end of the two connecting ropes away from the transmission rod is connected to the cross bar.

[0015] As a preferred embodiment of the heat exchange system of the spiral plate heat exchanger of the utility model, two winding wheels are symmetrically fixed on the transmission rod, two hook rings are symmetrically fixed on the cross bar, a hook adapted to the hook ring is provided at the bottom of the connecting rope, and the end of the connecting rope away from the hook is wound around the winding wheel.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. Through the coordination of the first cooling component, the second cooling component, the third cooling component and the decolorization component, it is possible to reduce the cooling load of the cooling tower, improve the stability of the saccharification feed temperature, reduce the frequency of disassembly and cleaning of the heat exchanger, extend the continuous production time of the workshop, and reduce or avoid the use of steam to heat the material before decolorization, thereby reducing the production cost of the workshop;

[0018] 2. Through the coordination of structures such as the cooling tower and the mixing device, the lifting frame is moved up and down to mix the water inside the cooling tower to avoid the water temperature inside the cooling tower being too high or too low locally, which affects the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is one of the structural diagrams of the utility model;

[0021] Figure 2 This is the second structural diagram of the utility model;

[0022] Figure 3 For this utility model Figure 1 Schematic diagram of the cross-sectional structure of the middle cooling tower;

[0023] Figure 4 For this utility model Figure 3 A schematic diagram of the structure of the mixing device;

[0024] Figure 5 For this utility model Figure 4 Enlarged view of point A in .

[0025] In the figure: 1. Liquefaction triple flash tank; 2. Main plate heat exchanger; 3. Cooling tower; 4. Spiral heat exchanger body; 5. Decolorization tank; 6. Auxiliary plate heat exchanger; 7. Pre-decolorization tank; 8. Saccharification enzyme tank; 9. Mixing device; 901. Motor; 902. Lifting frame; 903. Transmission rod; 904. Half gear; 905. Transmission gear; 906. Winding wheel; 907. Cross bar; 908. Hook; 909. Connecting rope. DETAILED DESCRIPTION

[0026] 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 in 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.

[0027] The utility model provides Figure 1 The spiral plate heat exchanger heat exchange system shown includes:

[0028] A liquefaction triple flash tank 1 is provided on one side of the liquefaction triple flash tank 1 with a cooling tower 3 for cooling the maltose syrup inside the liquefaction triple flash tank 1 , and a saccharification enzyme tank 8 for storing the maltose syrup is provided on one side of the cooling tower 3 .

[0029] As can be seen from the above, when in use, the maltose syrup to be processed is added to the liquefied three-flash tank 1, and the maltose syrup inside the liquefied three-flash tank 1 is cooled by the cooling tower 3 and then enters the saccharification and enzyme tank 8 to complete cooling.

[0030] refer to Figure 1 and Figure 2 As shown, a cooling device is provided between the liquefied three-flash tank 1 and the cooling tower 3, and the cooling device includes a first cooling component, a second cooling component and a third cooling component, and the third cooling component includes a spiral heat exchanger body 4, and the maltose syrup inside the liquefied three-flash tank 1 flows into the cold flow pipe of the spiral heat exchanger body 4 through a pipeline;

[0031] The first cooling assembly includes a main plate heat exchanger 2, the feed pipe of the main plate heat exchanger 2 is connected to the liquefied tertiary flash tank 1, and the discharge pipe of the main plate heat exchanger 2 is connected to the feed port of the cold flow pipe inside the spiral heat exchanger body 4, the main plate heat exchanger 2 and the cooling tower 3 are connected through a first water pipe, the maltose syrup inside the liquefied tertiary flash tank 1 flows into the main plate heat exchanger 2 for preliminary cooling, and the maltose syrup inside the main plate heat exchanger 2 enters the inside of the spiral heat exchanger body 4 to complete secondary cooling;

[0032] The second cooling assembly includes an auxiliary plate heat exchanger 6, the feed end of the auxiliary plate heat exchanger 6 is connected to the feed port of the cold flow pipe inside the spiral heat exchanger body 4, and the discharge end of the auxiliary plate heat exchanger 6 is connected to the saccharification enzyme tank 8, the auxiliary plate heat exchanger 6 and the cooling tower 3 are connected through a second water pipe, the maltose syrup inside the spiral heat exchanger body 4 flows into the auxiliary plate heat exchanger 6 for three cooling, and the maltose syrup inside the auxiliary plate heat exchanger 6 enters the saccharification enzyme tank 8 for storage after cooling;

[0033] A decolorizing tank 5 and a pre-decolorizing tank 7 are respectively arranged on both sides of the spiral heat exchanger body 4. The feed port of the heat flow pipe inside the spiral heat exchanger body 4 is connected to the pre-decolorizing tank 7, and the discharge port of the heat flow pipe inside the spiral heat exchanger body 4 is connected to the decolorizing tank 5. After the heat flow pipe inside the spiral heat exchanger body 4 exchanges heat with the cold flow pipe, the material inside the cold flow pipe is heated.

[0034] By adopting the above technical solution:

[0035] When in use, after the maltose syrup in the liquefied three-flash tank 1 enters the interior of the main plate heat exchanger 2 through the pipeline, the cooling water of the cooling tower 3 flows into the interior of the main plate heat exchanger 2 and the auxiliary plate heat exchanger 6, so that the main plate heat exchanger 2 performs the primary cooling on the maltose syrup, and the maltose syrup after the primary cooling enters the cold flow pipe of the spiral heat exchanger body 4 to complete the secondary cooling, and the maltose syrup after the secondary cooling flows into the interior of the auxiliary plate heat exchanger 6, so that the auxiliary plate heat exchanger 6 performs the third cooling on the secondary cooled maltose syrup, and the maltose syrup reaches the specified temperature, and at the same time, when the secondary cooling When the maltose syrup enters the interior of the spiral heat exchanger body 4, the decolorized material in the pre-decolorization tank 7 is added to the heat flow tube of the spiral heat exchanger body 4. After heat exchange inside the spiral heat exchanger body 4, the decolorized material in the spiral heat exchanger body 4 is heated, and the heated decolorized material is output to the decolorization tank 5, thereby not only reducing the cooling load of the cooling tower 3 and improving the stability of the saccharification feed temperature, but also reducing the frequency of disassembly and cleaning of the heat exchanger, extending the continuous production time of the workshop, and at the same time reducing or avoiding the use of steam to heat the pre-decolorization material, thereby reducing the production cost of the workshop.

[0036] In addition, refer to Figure 3-Figure 5 As shown, a mixing device 9 is provided inside the cooling tower 3, and the mixing device 9 includes a motor 901 fixed on the cooling tower 3 and a lifting frame 902 arranged inside the cooling tower 3, a half gear 904 is installed on the output end of the motor 901, two transmission gears 905 meshing with the half gear 904 are symmetrically fixed to the outer wall of the transmission rod 903, and two connecting ropes 909 are provided between the transmission rod 903 and the lifting frame 902; a cross bar 907 is fixed to the middle part of the lifting frame 902, and one end of the two connecting ropes 909 away from the transmission rod 903 is connected to the cross bar 907; two winding wheels 906 are symmetrically fixed on the transmission rod 903, and two hooks 908 are symmetrically fixed on the cross bar 907, and a hook adapted to the hook 908 is provided at the bottom of the connecting rope 909, and the end of the connecting rope 909 away from the hook is wound around the winding wheel 906.

[0037] By adopting the above technical solution:

[0038] When in use, the output shaft of motor 901 drives half gear 904 to rotate. When half gear 904 is meshed with one of transmission gears 905, one of transmission gears 905 rotates clockwise, and transmission gear 905 drives transmission rod 903 to rotate clockwise, and transmission rod 903 drives two winding wheels 906 to rotate clockwise, so that the connecting rope 909 on winding wheel 906 is loosened, and lifting frame 902 moves downward under gravity. When half gear 904 is meshed with another transmission gear 905, the other transmission gear 905 rotates counterclockwise, and transmission gear 905 drives transmission rod 903 to rotate counterclockwise, and transmission rod 903 drives two winding wheels 906 to rotate counterclockwise, so that the connecting rope 909 is wound around winding wheel 906, and then the lifting frame 902 is pulled to move upward, so as to mix the water inside cooling tower 3, so as to avoid the water temperature inside cooling tower 3 being too high or too low locally, thereby affecting the cooling effect.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. Spiral plate heat exchanger heat exchange system, characterized in that: include: A liquefaction triple flash tank (1), wherein a cooling tower (3) for cooling the maltose syrup inside the liquefaction triple flash tank (1) is disposed on one side of the liquefaction triple flash tank (1), and a saccharification enzyme tank (8) for storing the maltose syrup is disposed on one side of the cooling tower (3); A cooling device is provided between the liquefied tertiary flash tank (1) and the cooling tower (3), wherein the cooling device comprises a first cooling component, a second cooling component, a third cooling component and a decolorizing component, wherein the third cooling component comprises a spiral heat exchanger body (4), and the maltose syrup inside the liquefied tertiary flash tank (1) flows into a cold flow pipe inside the spiral heat exchanger body (4) through a pipeline.

2. The spiral plate heat exchanger heat exchange system according to claim 1, characterized in that: The first cooling component comprises a main plate heat exchanger (2), the feed pipe of the main plate heat exchanger (2) is connected to the liquefaction tertiary flash tank (1), and the discharge pipe of the main plate heat exchanger (2) is connected to the feed port of the cold flow pipe inside the spiral heat exchanger body (4), and the main plate heat exchanger (2) and the cooling tower (3) are connected via a first water pipe.

3. The spiral plate heat exchanger heat exchange system according to claim 2, characterized in that: The second cooling component comprises an auxiliary plate heat exchanger (6), the feed end of the auxiliary plate heat exchanger (6) is connected to the discharge port of the cold flow pipe inside the spiral heat exchanger body (4), and the discharge end of the auxiliary plate heat exchanger (6) is connected to the saccharification enzyme tank (8), and the auxiliary plate heat exchanger (6) and the cooling tower (3) are connected via a second water pipe.

4. The spiral plate heat exchanger heat exchange system according to claim 1, characterized in that: The decolorization component comprises a decolorization tank (5) and a pre-decolorization tank (7) respectively arranged on both sides of a spiral heat exchanger body (4), a feed inlet of a heat flow pipe inside the spiral heat exchanger body (4) is connected to the pre-decolorization tank (7), and a discharge outlet of the heat flow pipe inside the spiral heat exchanger body (4) is connected to the decolorization tank (5).

5. The spiral plate heat exchanger heat exchange system according to claim 1, characterized in that: A mixing device (9) is arranged inside the cooling tower (3), and the mixing device (9) comprises a motor (901) fixed on the cooling tower (3) and a lifting frame (902) arranged inside the cooling tower (3); a half gear (904) is installed on the output end of the motor (901); two transmission gears (905) meshing with the half gears (904) are symmetrically fixed on the outer wall of the transmission rod (903); and two connecting ropes (909) are arranged between the transmission rod (903) and the lifting frame (902).

6. The spiral plate heat exchanger heat exchange system according to claim 5, characterized in that: A cross bar (907) is fixed in the middle of the lifting frame (902), and one end of two connecting ropes (909) away from the transmission rod (903) is connected to the cross bar (907).

7. The spiral plate heat exchanger heat exchange system according to claim 6, characterized in that: Two winding wheels (906) are symmetrically fixed on the transmission rod (903), two hooks (908) are symmetrically fixed on the cross bar (907), and a hook matched with the hook (908) is arranged at the bottom of the connecting rope (909).

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