External hanging type plate-type evaporation capacity increasing device

Abstract

The utility model discloses an externally-hung plate-type evaporation capacity-increasing device, and particularly relates to the field of sugar manufacturing evaporation systems, the externally-hung plate-type evaporation capacity-increasing device comprises a steam inlet and a sugar juice inlet, the steam inlet and the sugar juice inlet are connected with a first expansion capacity-increasing section through pipelines, the output end of the first expansion capacity-increasing section is connected with a first-effect evaporation tank, and the output end of the first expansion capacity-increasing section is connected with a second-effect evaporation tank. The output end of the first-effect evaporation tank is connected with a second-effect evaporation tank, the bottom end of the second-effect evaporation tank is connected with a second expansion capacity increasing section through a pipeline, the output end of the second expansion capacity increasing section is connected with a third-effect evaporation tank through a pipeline, and the output end of the third-effect evaporation tank is connected with a fourth-effect evaporation tank. And the output end of the quadruple-effect evaporation tank is connected with a quintuple-effect evaporation tank through a pipeline. According to the utility model, the two expansion capacity-increasing sections are arranged, each expansion capacity-increasing section consists of the plate-type evaporator and the separator, and the plate-type evaporator is arranged on the multi-effect evaporator in an external hanging manner, so that the occupied area is smaller, the precious space is saved, and the investment cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sugar-making evaporation systems, and more specifically, to an external plate-type evaporation capacity increasing device. Background Art

[0002] In recent years, it has become popular to supplement the area of the evaporation pan by using the original external plate heat exchanger of the evaporation pan, which is an ideal solution for sugar factories to expand and increase the capacity of the evaporation system. The original external plate heat exchanger started from beet sugar factories. Since the scale formation in the evaporation pans of beet sugar factories is slow and does not need to be washed in rotation, when boiling and washing with alkali twice a sugar-making season, the plate heat exchanger can be boiled and washed together with the original evaporation pan. The evaporation pans of cane sugar factories need to be washed in rotation due to serious scale formation, and the cleaning method of high-pressure water jet is very inconvenient for the external plate heat exchanger, which requires disassembling the plates, consuming labor, and polluting the environment at the same time. Later, the method of boiling alkali was adopted, which greatly reduced the labor. Especially with the addition of rust remover in the alkali solution, the scale was completely removed, and then a small amount of clean water was used for backwashing. The washed plate surface was clean and bright, and there was no need to disassemble it again during the whole sugar-making season. Therefore, the method of using an external plate heat exchanger has been successfully applied in the expansion of cane sugar factories.

[0003] At present, in most domestic sugar factories, it is impossible to increase evaporation pans around the original equipment to expand productivity, resulting in a reduction in the production capacity of sugar-making and inconvenience in popularization and promotion. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides an external plate-type evaporation capacity increasing device. The technical problem to be solved by the utility model is: how to conveniently adjust the head of a patient to make the accuracy higher during radiation examination.

[0005] To achieve the above object, the utility model provides the following technical solution: an external plate-type evaporation capacity increasing device, including a steam inlet and a juice inlet. The steam inlet and the juice inlet are connected to a first expansion and capacity increasing section through pipelines. The output end of the first expansion and capacity increasing section is connected to a first-effect evaporation pan through a pipeline. The output end of the first-effect evaporation pan is connected to a second-effect evaporation pan. The bottom end of the second-effect evaporation pan is connected to a second expansion and capacity increasing section through a pipeline. The output end of the second expansion and capacity increasing section is connected to a third-effect evaporation pan through a pipeline. The output end of the third-effect evaporation pan is connected to a fourth-effect evaporation pan through a pipeline. The output end of the fourth-effect evaporation pan is connected to a fifth-effect evaporation pan through a pipeline.

[0006] In a preferred embodiment, the first expansion and capacity increasing section includes a first plate evaporator and a first separator. The steam inlet and the juice inlet are both connected to the first plate evaporator. The first plate evaporator is connected to the first separator through a pipeline. The output end of the first separator is connected to the first-effect evaporation pan.

[0007] In a preferred embodiment, the second expansion and capacity increase section includes a second plate evaporator and a second separator. The second plate evaporator is connected to the output end of the second-effect evaporation tank. The second plate evaporator is connected to the second separator through a pipeline. The output end of the second separator is connected to the third-effect evaporation tank through a pipeline.

[0008] In a preferred embodiment, the upper end of the five-effect evaporation tank is connected to a condensate vacuum system through a pipeline.

[0009] In a preferred embodiment, the condensate water of the first plate evaporator and the bottom end of the first-effect evaporation tank are discharged through a first drainage pipeline. The condensate water of the second-effect evaporation tank and the second plate evaporator are discharged through a second drainage pipeline. The condensate water of the third-effect evaporation tank is discharged through a third drainage pipeline. The condensate water of the fourth-effect evaporation tank is discharged through a fourth drainage pipeline. The condensate water of the five-effect evaporation tank is discharged through a fifth drainage pipeline.

[0010] Compared with the prior art, the technical effects and advantages of the present utility model are as follows:

[0011] By providing two expansion and capacity increase sections, the expansion and capacity increase sections are composed of a plate evaporator and a separator. The plate evaporator is arranged on the multi-effect evaporator in an external hanging form, which not only occupies less floor area, thus saving valuable space, but also greatly reduces the investment cost, reduces the maintenance, and does not require sacrificing reliability and safety. In terms of energy conservation, the plate evaporator and the condenser can perform countercurrent heat transfer evaporation, greatly reducing the temperature difference between the two ends, while the shell and tube type can only perform cross heat transfer, thereby reducing the consumption of heating steam. This greatly increases the productivity of sugar production. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0013] Figure 2 It is a schematic diagram of the structure of the first expansion and capacity increase section of the present utility model.

[0014] Figure 3 It is a schematic diagram of the structure of the second expansion and capacity increase section of the present utility model.

[0015] The reference numerals are: 1. Steam inlet; 2. Juice inlet; 3. First expansion and capacity increase section; 31. First plate evaporator; 32. First separator; 4. First-effect evaporation tank; 5. Second-effect evaporation tank; 6. Second expansion and capacity increase section; 61. Second plate evaporator; 62. Second separator; 7. Third-effect evaporation tank; 8. Fourth-effect evaporation tank; 9. Five-effect evaporation tank; 10. Condensate vacuum system. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0017] According to Figures 1-3 An external plate-type evaporation capacity increasing device as shown, comprising a steam inlet 1 and a juice inlet 2. The steam inlet 1 and the juice inlet 2 are connected to a first extended capacity increasing section 3 through pipelines. The output end of the first extended capacity increasing section 3 is connected to a first-effect evaporation tank 4 through a pipeline. The output end of the first-effect evaporation tank 4 is connected to a second-effect evaporation tank 5. The bottom end of the second-effect evaporation tank 5 is connected to a second extended capacity increasing section 6 through a pipeline. The output end of the second extended capacity increasing section 6 is connected to a third-effect evaporation tank 7 through a pipeline. The output end of the third-effect evaporation tank 7 is connected to a fourth-effect evaporation tank 8 through a pipeline. The output end of the fourth-effect evaporation tank 8 is connected to a fifth-effect evaporation tank 9 through a pipeline.

[0018] In a preferred embodiment, the first extended capacity increasing section 3 includes a first plate evaporator 31 and a first separator 32. The steam inlet 1 and the juice inlet 2 are both connected to the first plate evaporator 31. The first plate evaporator 31 is connected to the first separator 32 through a pipeline. The output end of the first separator 32 is connected to the first-effect evaporation tank 4.

[0019] In a preferred embodiment, the second extended capacity increasing section 6 includes a second plate evaporator 61 and a second separator 62. The second plate evaporator 61 is connected to the output end of the second-effect evaporation tank 5. The second plate evaporator 61 is connected to the second separator 62 through a pipeline. The output end of the second separator 62 is connected to the third-effect evaporation tank 7 through a pipeline.

[0020] In a preferred embodiment, the upper end of the fifth-effect evaporation tank 9 is connected to a decondensing vacuum system 10 through a pipeline.

[0021] In a preferred embodiment, the condensate water is discharged from the bottom ends of the first plate evaporator 31 and the first-effect evaporation tank 4 through a first drainage pipeline. The condensate water is discharged from the bottom ends of the second-effect evaporation tank 5 and the second plate evaporator 61 through a second drainage pipeline. The condensate water is discharged from the bottom end of the third-effect evaporation tank 7 through a third drainage pipeline. The condensate water is discharged from the bottom end of the fourth-effect evaporation tank 8 through a fourth drainage pipeline. The condensate water is discharged from the bottom end of the fifth-effect evaporation tank 9 through a fifth drainage pipeline.

[0022] The specific implementation method is as follows: After the syrup is heated to a temperature close to the boiling point of 102°C by the preheater in the front section, it then preferentially enters the first plate evaporator 31 for further heating and boiling. The heat transfer area of the first plate evaporator 31 is set to 150 m², where the syrup is vaporized and evaporated. The vaporized syrup and the vaporized juice steam enter the pre-prepared first separator 32 simultaneously. The syrup flows downward according to the gravity factor and converges into the discharge pipeline of the first-effect evaporation tank 4 to be mixed with the syrup discharged from the first-effect evaporation tank 4, and then continues to flow to the second-effect evaporation tank 5 for further evaporation and concentration. At the same time, the juice steam flowing into the first separator 32 from the first plate evaporator 31 will rise, enter the "U"-shaped steam pipeline, and then enter the connection port above the syrup liquid level of the first-effect evaporation tank 4 by 20 cm. After the juice steam in the first-effect evaporation tank 4 is mixed and the syrup entrained by the foam is intercepted by the juice trap, it enters the heating section of the second-effect evaporation tank 5 as the heat source for the second-effect evaporation tank. The condensed water of the first plate evaporator 31 flows into the condensed water tank of the first-effect evaporation tank 4, and the generated flash steam converges into the juice steam of the first-effect evaporation tank 4 and enters the second-effect heating section. And so on, the juice steam of the second effect serves as the heat source for the third-effect evaporation tank 7, the juice steam of the third effect serves as the heat source for the fourth-effect evaporation tank 8, and the juice steam of the fourth effect serves as the heat source for the fifth-effect evaporation tank 9. In order to reuse the excess juice steam of the second-effect evaporation tank 5, we add a second plate evaporator 61 at the front end of the third-effect evaporation tank 7. The heat transfer area of the second plate evaporator 61 is set to 200 m². Using the sufficient juice steam heat of the second effect as the heat source, the syrup is concentrated one more level again. The syrup with increased sag is concentrated by the third-effect evaporation tank 7, the fourth-effect evaporation tank 8, and the fifth-effect evaporation tank 9 to reach 60 BX - 70 BX, and then enters the sugar boiling tank for evaporation and crystallization.

[0023] Finally, several points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0024] Second: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0025] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An external plate-type evaporation capacity increasing device, comprising a steam inlet (1) and a sugar juice inlet (2), characterized in that: The steam inlet (1) and the sugar juice inlet (2) are connected to a first expansion and capacity increasing section (3) through a pipeline; the output end of the first expansion and capacity increasing section (3) is connected to a first-effect evaporation tank (4) through a pipeline; the output end of the first-effect evaporation tank (4) is connected to a second-effect evaporation tank (5); the bottom end of the second-effect evaporation tank (5) is connected to a second expansion and capacity increasing section (6) through a pipeline; the output end of the second expansion and capacity increasing section (6) is connected to a third-effect evaporation tank (7) through a pipeline; the output end of the third-effect evaporation tank (7) is connected to a fourth-effect evaporation tank (8) through a pipeline; and the output end of the fourth-effect evaporation tank (8) is connected to a fifth-effect evaporation tank (9) through a pipeline.

2. The external plate-type evaporation capacity increasing device according to claim 1 is characterized in that: The first expansion and capacity increasing section (3) comprises a first plate evaporator (31) and a first separator (32); the steam inlet (1) and the sugar juice inlet (2) are both connected to the first plate evaporator (31); the first plate evaporator (31) and the first separator (32) are connected via a pipeline; and the output end of the first separator (32) is connected to a first-effect evaporation tank (4).

3. The external plate-type evaporation capacity increasing device according to claim 1 is characterized in that: The second expansion and capacity increasing section (6) comprises a second plate evaporator (61) and a second separator (62); the second plate evaporator (61) is connected to the output end of the second-effect evaporation tank (5); the second plate evaporator (61) is connected to the second separator (62) via a pipeline; and the output end of the second separator (62) is connected to the third-effect evaporation tank (7) via a pipeline.

4. The external plate-type evaporation capacity increasing device according to claim 1, characterized in that: The upper end of the five-effect evaporation tank (9) is connected to a decondensation vacuum system (10) via a pipeline.

5. The external plate-type evaporation capacity increasing device according to claim 2 is characterized in that: The bottom ends of the first plate evaporator (31) and the first-effect evaporation tank (4) discharge condensed water through a first drainage pipe, the bottom ends of the second-effect evaporation tank (5) and the second plate evaporator (61) discharge condensed water through a second drainage pipe, the bottom end of the third-effect evaporation tank (7) discharges condensed water through a third drainage pipe, the bottom end of the fourth-effect evaporation tank (8) discharges condensed water through a fourth drainage pipe, and the bottom end of the fifth-effect evaporation tank (9) discharges condensed water through a fifth drainage pipe.

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