Double-tower falling film evaporator set

Abstract

The utility model discloses a double-tower falling-film evaporator set, which belongs to the technical field of evaporator equipment and comprises a heating evaporation tank, a replacement component is arranged at the top of the heating evaporation tank, feed liquid can be fed more uniformly, heat pipes can be replaced and overhauled conveniently, evaporated liquid and steam are separated by a separator, and the heat pipes can be replaced and overhauled conveniently. Steam is introduced into the heating evaporation tank to serve as a heating medium through a secondary steam outlet in the upper portion of the separator, multi-effect operation is achieved, the energy utilization rate is increased, the heating steam inlet is mainly used for providing heat energy needed by evaporation, and the condensate water outlet is used for discharging water formed by condensation of the heating steam after heat transfer. The mounting slots correspond to the bottoms of the partition plates, so that the mounting stability of the partition plates is ensured, and meanwhile, internal media can be discharged in time through the treatment opening and the concentrated solution outlet.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporator equipment, in particular to a double-tower falling film evaporator group. Background Art

[0002] The double-tower falling film evaporator is of great importance in the production processes of chemical, pharmaceutical, food and other industries. It allows the liquid to form a thin film on the heating tube wall, greatly increasing the heat transfer area and thus improving the evaporation efficiency. This design enables the evaporator to process a large amount of liquid in a shorter time, improving production efficiency. With a double-tower structure, the double-tower falling film evaporator can achieve multi-stage utilization of heat, thereby reducing energy consumption.

[0003] In the prior art, the flow direction of the material in the falling film evaporator is fixed, and the area where the concentrated material is located is prone to scaling, which affects the normal use of the falling film evaporator and reduces the service life of the equipment; at the same time, the steam pipeline layout is complicated, the heat exchange efficiency is poor, and the heat loss is large;

[0004] The existing patent (Announcement No.: CN207899002U) is a double-tower falling film evaporator group. This utility model has a simple, compact and reasonable structure. The material can enter the evaporator in horizontal flow or parallel flow. During parallel flow operation, the logistics direction can be changed without stopping the machine, so that the dilute material can flush the evaporator where the concentrated material is located, reducing the risk of scaling and improving the overall heat transfer efficiency. In addition, due to the relatively small number of equipment and pipelines and the compact layout, the secondary steam flow route is the shortest, which reduces the heat loss to a minimum.

[0005] In view of the above problems, existing patents have provided solutions, but most existing falling film evaporators are not convenient for replacing and cleaning the internal heat pipes during use, and steam is often discharged directly during use, which greatly reduces the energy utilization rate.

[0006] To this end, a double-tower falling film evaporator group is proposed. Utility Model Content

[0007] The utility model aims to provide a double-tower falling film evaporator group, which can solve the problem that most existing falling film evaporators are inconvenient to replace and clean the internal heat pipes during use, and often directly discharge steam during use, greatly reducing the energy utilization rate.

[0008] To achieve the above object, the utility model provides the following technical solution: a double-tower falling film evaporator group, comprising a heating evaporation tank, a replacement assembly is provided on the top of the heating evaporation tank;

[0009] The replacement assembly includes a fixing ring, a feed hopper, a fixing plate, a heat pipe, a partition plate and a liquid inlet, wherein the fixing ring is fixedly arranged at one end of the top of the heating evaporator, and the number of the fixing rings is two groups, the feed hopper is arranged at one end of the end of the heating evaporator, the fixing plate is arranged between the two groups of fixing rings, the heat pipe is arranged inside the heating evaporator and one end of the heat pipe is arranged on the fixing plate, the partition plate is fixedly arranged inside the feed hopper, and the liquid inlet is respectively opened on both sides of the feed hopper.

[0010] Preferably, a separator is provided on one side of the heating evaporation tank, a connecting pipe is provided on one side of the separator, and the connecting pipe is connected to one side of the heating evaporation tank.

[0011] Preferably, a heating steam inlet is provided on one side of the heating evaporator, and a condensed water outlet is provided on one side of the bottom of the heating evaporator, and the condensed water outlet is located below the heating steam inlet.

[0012] Preferably, a reflux port is provided on one side of the heating evaporator, a secondary steam outlet is provided on one side of the separator, and the secondary steam outlet and the reflux port are communicated with each other.

[0013] Preferably, a support plate is fixedly provided on the inner side of the heating evaporator, and the number of the support plates is multiple groups, and the support plates fix the position of the heat pipes.

[0014] Preferably, a mounting slot is provided on the surface of the fixing plate, the mounting slot corresponds to the bottom of the partition plate, and a sealing gasket is provided at the connection between the partition plate and the fixing ring.

[0015] Preferably, a processing port is provided at the bottom of the heating evaporator, and a concentrated liquid outlet is provided at the bottom of the separator.

[0016] Preferably, the bottoms of the heating evaporator and the separator are fixedly provided with supporting legs, and the number of the supporting legs is four groups and they are arranged at the same height.

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

[0018] 1. This application sets a replacement component, and the partition plate divides the interior of the feed hopper into two spaces. The feed liquid is introduced into the interior through the feed liquid inlets on both sides, which can make the feed liquid introduction more uniform and facilitate the replacement and maintenance of the heat pipe.

[0019] 2. The present application separates the evaporated liquid and steam by setting a separator. The steam passes through the secondary steam outlet on the upper part of the separator and enters the heating evaporator as a heating medium, thereby realizing multi-effect operation and improving energy utilization. The main function of the heating steam inlet is to provide the heat energy required for evaporation, and the condensed water outlet is to discharge the water condensed by the heating steam after the heat is transferred. The installation slot is arranged to correspond to the bottom of the partition plate to ensure the stability of the partition plate installation. At the same time, the processing port and the concentrated liquid outlet can discharge the internal medium in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is the overall structural view of the utility model;

[0022] Figure 2 This is an overall cross-sectional structural view of the utility model;

[0023] Figure 3 This is a partial structural view of the separator of the utility model;

[0024] Figure 4 This is a partial structural view of the heating evaporator of the utility model;

[0025] Figure 5 This is a partial structural view of the replacement component of the utility model.

[0026] Description of reference numerals:

[0027] 1. Heating evaporator; 2. Replacement components; 201. Fixing ring; 202. Feed hopper; 203. Fixing plate; 204. Heat pipe; 205. Partition plate; 206. Liquid inlet; 3. Separator; 4. Connecting pipe; 5. Heating steam inlet; 6. Condensate outlet; 7. Reflux port; 8. Secondary steam outlet; 9. Support plate; 10. Mounting slot; 11. Sealing pad; 12. Processing port; 13. Concentrate outlet; 14. Support leg. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figures 1 to 5 , the utility model provides a technical solution:

[0030] A double-tower falling film evaporator group comprises a heating evaporation tank 1, and a replacement component 2 is arranged on the top of the heating evaporation tank 1;

[0031] The replacement component 2 includes a fixing ring 201, a feed hopper 202, a fixing plate 203, a heat pipe 204, a partition plate 205 and a liquid inlet 206. The fixing ring 201 is fixedly arranged at one end of the top of the heating evaporator 1, and the number of the fixing rings 201 is two groups. The feed hopper 202 is arranged at one end of the end of the heating evaporator 1, the fixing plate 203 is arranged between the two groups of fixing rings 201, the heat pipe 204 is arranged inside the heating evaporator 1 and one end of the heat pipe 204 is arranged on the fixing plate 203, the partition plate 205 is fixedly arranged inside the feed hopper 202, and the liquid inlet 206 is respectively opened on both sides of the feed hopper 202.

[0032] By setting up the replacement component 2 including the fixing ring 201, the feed hopper 202, the fixing plate 203, the heat pipe 204, the partition plate 205 and the liquid inlet 206, when in use, the fixing ring 201 is installed on the top end of the heating evaporator 1, and then the feed hopper 202 is installed on the heating evaporator 1 through the two groups of fixing rings 201, and the heat pipe 204 is installed inside the heating evaporator 1, and the heat pipe 204 is fixedly installed through the fixing plate 203, and the partition plate 205 divides the inside of the feed hopper 202 into two parts of space, and the liquid is introduced into the inside through the liquid inlets 206 on both sides, which can make the liquid introduction more uniform, and at the same time facilitate the replacement and maintenance of the heat pipe 204.

[0033] Specifically, Figure 1 As shown, a separator 3 is disposed on one side of the heating evaporation tank 1 , a connecting pipe 4 is disposed on one side of the separator 3 , and the connecting pipe 4 is connected to one side of the heating evaporation tank 1 .

[0034] Specifically, Figure 1 As shown, a heating steam inlet 5 is provided on one side of the heating evaporation tank 1 , and a condensed water outlet 6 is provided on one side of the bottom of the heating evaporation tank 1 . The condensed water outlet 6 is located below the heating steam inlet 5 .

[0035] Specifically, Figure 1As shown, a reflux port 7 is provided on one side of the heating evaporator 1 , and a secondary steam outlet 8 is provided on one side of the separator 3 , and the secondary steam outlet 8 is communicated with the reflux port 7 .

[0036] Specifically, Figure 1 As shown, a support plate 9 is fixedly provided on the inner side of the heating evaporator 1 . The number of the support plates 9 is multiple groups, and the support plates 9 fix the position of the heat pipes 204 .

[0037] Specifically, Figure 5 As shown, a mounting slot 10 is provided on the surface of the fixing plate 203 , and the mounting slot 10 corresponds to the bottom of the partition plate 205 , and a sealing gasket 11 is provided at the connection between the partition plate 205 and the fixing ring 201 .

[0038] Specifically, Figure 1 As shown, a processing port 12 is provided at the bottom of the heating evaporator 1 , and a concentrated liquid outlet 13 is provided at the bottom of the separator 3 .

[0039] Specifically, Figure 1 As shown, support legs 14 are fixedly provided at the bottom of the heating evaporator 1 and the separator 3 . The number of the support legs 14 is four groups and they are arranged at the same height.

[0040] By setting up the separator 3, the evaporated liquid and steam are separated, and the steam passes through the secondary steam outlet 8 at the upper part of the separator 3 and enters the heating evaporator 1 as a heating medium, thereby realizing multi-effect operation and improving the energy utilization rate. The liquid part passes through the interface at the lower part of the separator 3 and is discharged from the separation chamber. The main function of the heating steam inlet 5 is to provide the heat energy required for evaporation, and the condensed water outlet 6 is to discharge the water formed by the condensation of the heating steam after the heat is transferred. The installation slot 10 is arranged to correspond to the bottom of the partition plate 205 to ensure the stability of the installation of the partition plate 205. At the same time, the processing port 12 and the concentrated liquid outlet 13 can discharge the internal medium in time.

[0041] By adopting the above technical solution, the problem that most existing falling film evaporators are inconvenient to replace and clean the internal heat pipe 204 during use, and the steam is often directly discharged during use, which greatly reduces the energy utilization rate is solved.

[0042] Working principle: When the present application is in use, the fixing ring 201 is first installed on one end of the top of the heating evaporator 1, and then the feed hopper 202 is installed on the heating evaporator 1 through two sets of fixing rings 201, and the heat pipe 204 is installed inside the heating evaporator 1 at the same time, and the heat pipe 204 is fixedly installed through the fixing plate 203. At the same time, the partition plate 205 divides the inside of the feed hopper 202 into two spaces, and the feed liquid is introduced into the inside through the feed liquid inlet 206 on both sides. The feed liquid is added from the heating evaporator 1, and is evenly distributed to each heat pipe 204 through the liquid distribution and film forming device. Under the action of gravity, vacuum induction and airflow, the feed liquid flows from top to bottom in a uniform film shape, and is heated and vaporized by the heating medium at the same time. The generated steam and liquid phase enter the separation chamber together. In the separation chamber, the steam and liquid are fully contacted and separated, and the steam enters the heating evaporator 1 as a heating medium to achieve multi-effect operation, and the liquid part is discharged from the separation chamber.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A double-tower falling film evaporator group, comprising a heating evaporation tank (1), characterized in that: A replacement component (2) is provided on the top of the heating evaporation tank (1); The replacement component (2) comprises a fixing ring (201), a feed hopper (202), a fixing plate (203), a heat pipe (204), a partition plate (205) and a liquid feed inlet (206); the fixing ring (201) is fixedly arranged at one end of the top of the heating evaporator (1), and the fixing ring (201) is provided in two groups; the feed hopper (202) is provided at one end of the end of the heating evaporator (1); the fixing plate (203) is provided between the two groups of fixing rings (201); the heat pipe (204) is provided inside the heating evaporator (1), and one end of the heat pipe (204) is provided on the fixing plate (203); the partition plate (205) is fixedly arranged inside the feed hopper (202); and the liquid feed inlet (206) is respectively provided on both sides of the feed hopper (202).

2. The double-tower falling film evaporator group according to claim 1, characterized in that: A separator (3) is provided on one side of the heating evaporation tank (1), a connecting pipe (4) is provided on one side of the separator (3), and the connecting pipe (4) is connected to one side of the heating evaporation tank (1).

3. The double-tower falling film evaporator group according to claim 1, characterized in that: A heating steam inlet (5) is provided on one side of the heating evaporator (1), and a condensed water outlet (6) is provided on one side of the bottom of the heating evaporator (1), wherein the condensed water outlet (6) is located below the heating steam inlet (5).

4. The double-tower falling film evaporator group according to claim 2, characterized in that: A reflux port (7) is provided on one side of the heating evaporator (1), and a secondary steam outlet (8) is provided on one side of the separator (3); the secondary steam outlet (8) and the reflux port (7) are in communication with each other.

5. The double-tower falling film evaporator group according to claim 1, characterized in that: A support plate (9) is fixedly arranged on the inner side of the heating evaporator (1), the support plates (9) being provided in a plurality of groups, and the support plates (9) fix the position of the heat pipe (204).

6. The double-tower falling film evaporator group according to claim 1, characterized in that: A mounting slot (10) is provided on the surface of the fixing plate (203), the mounting slot (10) and the bottom of the partition plate (205) correspond to each other, and a sealing gasket (11) is provided at the connection between the partition plate (205) and the fixing ring (201).

7. The double-tower falling film evaporator group according to claim 2, characterized in that: The bottom of the heating evaporator (1) is provided with a processing port (12), and the bottom of the separator (3) is provided with a concentrated liquid outlet (13).

8. The double-tower falling film evaporator group according to claim 2, characterized in that: Support legs (14) are fixedly arranged at the bottom of the heating evaporator (1) and the separator (3), and the number of the support legs (14) is four groups and they are arranged at the same height.

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