MVR single-effect multi-body evaporator set
By designing the MVR single-effect multi-body evaporator group, steam collection pipelines and separators are used to recover steam, and combining agitating rods and partition plates to optimize material flow, the problems of low thermal energy utilization and high cost of existing MVR evaporators are solved, achieving efficient thermal energy recovery and reducing production costs.
Patent Information
- Application Number
- CN202510625638.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2025-08-01
AI Technical Summary
The existing MVR evaporators have shortcomings in terms of thermal energy utilization and production costs, especially in multi-effect evaporator systems, with a high investment, and a low thermal energy recovery rate of single-effect evaporators, which cannot meet the needs of large-scale production.
The MVR single-effect multi-body evaporator group is designed to recover the steam from multiple MVR evaporators through steam collection pipelines and separators, combine the agitating rod to improve the heat conduction efficiency, and use a partition plate and agitating device to optimize material flow.
It improves the overall utilization efficiency of steam, reduces production costs, and enhances the heat conduction heating effect. It is suitable for efficient thermal energy recovery in chemical, pharmaceutical, food and environmental protection fields.
Smart Images
Figure CN120393449A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of evaporators, and particularly relates to an MVR single-effect multi-body evaporator group. Background Art
[0002] An evaporator is a device that vaporizes the solvent in a solution by heating, thereby achieving the concentration or separation of the solute. It is widely used in fields such as chemical industry, pharmaceuticals, food, and environmental protection. According to the operation mode and structural characteristics, evaporators can be divided into single-effect evaporators, multi-effect evaporators, forced circulation evaporators, falling film evaporators, and rising film evaporators. A single-effect evaporator is the most basic evaporation device, and its core is the combination of a heating chamber and a separation chamber. The solution is heated to the boiling point by steam in the heating chamber, and the solvent vaporizes to form secondary steam. Subsequently, gas-liquid separation is achieved in the separation chamber. The concentrated solution is discharged from the bottom, and the secondary steam enters the condenser or is directly discharged. A single-effect evaporator is suitable for small-scale production or scenarios with low requirements for heat energy recovery. A multi-effect evaporator realizes the step-by-step utilization of secondary steam by connecting multiple evaporators in series. The secondary steam generated in the first effect is used as the heating source for the second effect, and so on for subsequent effect bodies, forming multi-stage heat energy recovery. Its heat energy utilization rate is high, and the steam consumption is significantly reduced. However, the system structure is more complex, and the investment and maintenance costs are higher. It is suitable for large-scale production or scenarios with high energy-saving requirements. A forced circulation evaporator forces the solution to flow at a high speed in the heating tubes through a circulation pump to form a turbulent flow to enhance the heat transfer effect and avoid scaling or crystallization at the same time. It is suitable for solutions with high viscosity, easy scaling, or crystallization. The circulation pump needs to operate continuously, and the energy consumption is relatively high. It is suitable for scenarios of processing materials that are easy to crystallize, scale, or have high viscosity. In a falling film evaporator, the solution is evenly distributed from the top of the heating tube and forms a thin film flowing downward along the inner wall of the tube while being heated and vaporized. The secondary steam and the concentrated liquid are separated in the separation chamber. It is suitable for the concentration of heat-sensitive, high-concentration, or easily crystallizable materials. In a rising film evaporator, the solution enters from the bottom of the heating tube and is driven by the high-speed rising secondary steam to form a thin film, flowing upward along the inner wall of the tube and vaporizing. The concentrated liquid and the secondary steam are separated in the separation chamber. It is suitable for low-concentration, easily foaming solutions. An MVR single-effect evaporator compresses the secondary steam through a steam compressor, raises its temperature and pressure, and then uses it as the heating source again to achieve the recycling of heat energy. Its heat energy recovery rate is as high as over 90%, and the steam consumption is reduced by about 80%, significantly reducing the consumption of steam and cooling water and lowering the energy consumption cost. It is suitable for fields such as chemical industry, pharmaceuticals, food, and environmental protection, especially suitable for the treatment of heat-sensitive, high-concentration, or easily crystallizable materials. Summary of the Invention
[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an MVR single-effect multi-body evaporator group. Through a steam collection pipeline and a separator, the steam of multiple MVR evaporators is recycled and utilized, improving the heat conduction heating efficiency of each evaporator and reducing the overall operation cost.
[0004] The object of the present invention is achieved as follows: The MVR single-effect multi-body evaporator group includes a separator and multiple MVR evaporators. The housing of the MVR evaporator consists of a feed section, a heating section, and a discharge section. A steam inlet is provided on the side of the upper part of the heating section, and a steam outlet is provided on the side of the lower part of the heating section. A separator steam inlet is provided on the side of the lower part of the separator. The separator steam inlet is connected to a steam transmission pipeline, and the steam transmission pipeline is connected to a steam collection pipeline. The steam outlet is connected to an exhaust pipe, and the exhaust pipe is connected to the steam collection pipeline. A second partition plate is provided in the feed section, a third partition plate is provided in the discharge section, and a material passing pipe is provided in the heating section. The upper end of the material passing pipe passes through the second partition plate and is communicated with the feed section, and the lower end of the material passing pipe passes through the third partition plate and is communicated with the discharge section. A stirring rod is provided in the material passing pipe, and the stirring rod is used for stirring the material entering the material passing pipe.
[0005] Further, a feed inlet is provided on the side of the feed section, a discharge outlet is provided at the bottom of the discharge section, and a drain outlet is provided on the outer side wall of the discharge section. The height of the drain outlet is above the third partition plate. The lower part of the discharge section is a conical section, and the discharge outlet is provided at the bottom of the conical section.
[0006] Further, inner partition plates are provided on the inner wall of the material passing pipe, and the inner partition plates are integrally in an arc shape. Two of the inner partition plates are in a group and are provided on both sides of the stirring rod. A gap is provided between the two inner partition plates in the same group, and multiple groups of the inner partition plates are uniformly provided along the length direction of the material passing pipe.
[0007] Further, upper stirring plates and lower stirring plates are provided on the side of the stirring rod. The upper stirring plates are provided on one side of the stirring rod, and the lower stirring plates are provided on the other side of the stirring rod. One upper stirring plate and one lower stirring plate are in a group and are respectively located above and below one group of the inner partition plates.
[0008] Further, sealing sleeves are provided on both the second partition plate and the third partition plate. The upper end and the lower end of the material passing pipe respectively pass through the corresponding sealing sleeves and are communicated with the feed section and the discharge section.
[0009] Further, support ring plates are provided on the inner walls of both the feed section and the discharge section, and the second partition plate and the third partition plate are respectively connected to the corresponding support ring plates.
[0010] Further, a first partition plate is arranged in the feeding section. The first partition plate is located above the second partition plate. A driving motor is arranged on the first partition plate, and an output shaft of the driving motor is connected to the upper end of the stirring rod. A top sealing plate is arranged at the top of the feeding section.
[0011] Further, a material passing plate is arranged in the discharging section. The material passing plate is located below the third partition plate. A support seat is arranged on the material passing plate, and the lower end of the stirring rod is rotatably connected to the support seat. A plurality of material passing openings are arranged on the material passing plate.
[0012] Further, regulating valves are arranged on both the exhaust pipe and the steam transmission pipeline.
[0013] Beneficial effects of the present invention: The MVR single-effect multi-body evaporator group of the present invention is composed of a separator and a plurality of MVR evaporators. The shell of the MVR evaporator is composed of a feeding section, a heating section, and a discharging section. A steam inlet is arranged on the side surface of the upper part of the heating section, and a steam outlet is arranged on the side surface of the lower part of the heating section. A separator steam inlet is arranged on the side surface of the lower part of the separator. The separator steam inlet is connected to a steam collecting pipeline through a steam transmission pipeline, and the steam outlet is connected to the steam collecting pipeline through an exhaust pipe. The steam discharged from each MVR evaporator through the steam outlet can be collected through the steam collecting pipeline and transported to the separator for treatment, and then further processed by other equipment for recycling, which can enhance the overall utilization efficiency and management of steam and reduce production costs. A second partition plate is arranged in the feeding section, and a third partition plate is arranged in the discharging section. The cavity of the heating section is isolated by the second partition plate and the third partition plate. A material passing pipe is arranged in the heating section. The upper end of the material passing pipe passes through the second partition plate and is communicated with the feeding section, and the lower end passes through the third partition plate and is communicated with the discharging section. Steam enters the heating section and heats the material entering the material passing pipe through the material passing pipe. A stirring rod is arranged in the material passing pipe, and the material entering the material passing pipe can be stirred through the stirring rod to enhance the efficiency of heat conduction heating treatment of the material. The MVR single-effect multi-body evaporator group of the present invention has a reasonable structure and is convenient to operate and use. The steam of multiple MVR evaporators is recycled through the steam collecting pipeline and the separator, the heat conduction heating efficiency of each evaporator is improved, and the overall operation cost is reduced. Description of the Drawings
[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0015] Figure 1 It is a three-dimensional structure schematic diagram of an MVR single-effect multi-body evaporator group.
[0016] Figure 2 It is a three-dimensional structure schematic diagram of the MVR evaporator in the MVR single-effect multi-body evaporator group.
[0017] Figure 3 It is a sectional structure schematic diagram of the MVR evaporator in the MVR single-effect multi-body evaporator group.
[0018] Figure 4 It is an internal structure schematic diagram of the MVR evaporator in the MVR single-effect multi-body evaporator group.
[0019] Figure 5 It is a structure schematic diagram of the feed pipe arrangement in the MVR single-effect multi-body evaporator group.
[0020] Figure 6 It is a structure schematic diagram of the connection of the feed pipes in the MVR single-effect multi-body evaporator group.
[0021] Figure 7 It is an internal structure schematic diagram of the feed pipes in the MVR single-effect multi-body evaporator group.
[0022] Figure 8 It is a structure schematic diagram of the connection of the internal partitions in the MVR single-effect multi-body evaporator group. Detailed implementation manners
[0023] The following further describes the present invention with reference to the drawings.
[0024] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0026] It should be noted that all directional indications (such as up-down-left-right-front-back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly. The connections described can be direct connections or indirect connections.
[0027] As Figure 1-8 shown, the MVR single-effect multi-body evaporator group of the present invention includes a separator 2 and a plurality of MVR evaporators 1. The housing of the MVR evaporator 1 is composed of a feed section 9, a heating section 10, and a discharge section 12. A steam inlet 3 is provided on the side of the upper part of the heating section 10, and a steam outlet 4 is provided on the side of the lower part of the heating section 10; a separator steam inlet 7 is provided on the side of the lower part of the separator 2. The separator steam inlet 7 is connected to a steam transmission pipeline 6, the steam transmission pipeline 6 is connected to a steam collection pipeline 8, the steam outlet 4 is connected to an exhaust pipe 5, and the exhaust pipe 5 is connected to the steam collection pipeline 8; A second partition plate 19 is provided in the feed section 9, a third partition plate 16 is provided in the discharge section 12, and a material passing pipe 17 is provided in the heating section 10. The upper end of the material passing pipe 17 passes through the second partition plate 19 and communicates with the feed section 9, and the lower end of the material passing pipe 17 passes through the third partition plate 16 and communicates with the discharge section 12; a stirring rod 18 is provided in the material passing pipe 17, and the stirring rod 18 is used to stir the material entering the material passing pipe 17.
[0028] Further, in one embodiment, a feed inlet 11 is provided on the side of the feed section 9, a discharge outlet 14 is provided at the bottom of the discharge section 12, and a drain outlet 13 is provided on the outer side wall of the discharge section 12. The height of the drain outlet 13 is above the third partition plate 16; the lower part of the discharge section 12 is a conical section, and the discharge outlet 14 is provided at the bottom of the conical section. The material enters the feed section 9 from the feed inlet 11, enters the material passing pipe 17 in the heating section 10 from the feed section 9, enters the discharge section 12 after heat treatment, and is finally discharged through the discharge outlet 14 and enters other process equipment through corresponding pipelines; the water liquefied and accumulated on the third partition plate 16 can be discharged through the drain outlet 13.
[0029] Further, in one embodiment, an inner partition plate 27 is provided on the inner wall of the material passing pipe 17, and the inner partition plate 27 is integrally arcuate; two of the inner partition plates 27 are in a group and are arranged on both sides of the stirring rod 18, and there is a gap between the two inner partition plates 27 in the same group; a plurality of groups of the inner partition plates 27 are uniformly arranged along the length direction of the material passing pipe 17; after the material enters the feeding section 9, it can flow downward in sequence through the gaps in each group of the inner partition plates 27, not only being distributed on the inner wall of the material passing pipe 17, but also wrapping the inner partition plate 27, thereby increasing the heat conduction area and efficiency of the material through the inner partition plate 27, and enhancing the working efficiency and quality of the evaporator.
[0030] Further, in one embodiment, upper stirring plates 29 and lower stirring plates 28 are provided on the side surface of the stirring rod 18, the upper stirring plates 29 are arranged on one side of the stirring rod 18, and the lower stirring plates 28 are arranged on the other side of the stirring rod 18; one upper stirring plate 29 and one lower stirring plate 28 are in a group and are respectively located above and below a group of the inner partition plates 27; when the stirring rod 18 rotates, it drives the upper stirring plates 29 and the lower stirring plates 28 to rotate, thereby stirring the material entering the material passing pipe 17 to make it more evenly distributed in the material passing pipe 17, and wrapping the inner partition plate 27, thereby increasing the heat conduction efficiency of the material.
[0031] Further, in one embodiment, sealing sleeves 23 are provided on both the second partition plate 19 and the third partition plate 16, and the upper end and the lower end of the material passing pipe 17 respectively pass through the corresponding sealing sleeves 23 and are communicated with the feeding section 9 and the discharging section 12; the sealing sleeves 23 are used to seal the end joints of the material passing pipe 17 to prevent leakage of the material.
[0032] Further, in one embodiment, support ring plates 25 are provided on the inner walls of both the feeding section 9 and the discharging section 12, and the second partition plate 19 and the third partition plate 16 are respectively connected to the corresponding support ring plates 25; the support ring plates 25 are used to install and seal the second partition plate 19 and the third partition plate 16, the structure is simple and reasonable, the connection is stable and convenient, and at the same time, the corresponding connection can be sealed by a sealing gasket to prevent leakage of the material.
[0033] Further, in one embodiment, a first partition plate 20 is disposed in the feeding section 9. The first partition plate 20 is located above the second partition plate 19. A driving motor 21 is disposed on the first partition plate 20. An output shaft of the driving motor 21 is connected to an upper end of the stirring rod 18. A top sealing plate 22 is disposed at the top of the feeding section 9. The stirring rod 18 can be driven by the driving motor 21, and at the same time, the rotation speed of the stirring rod 18 can be controlled according to the operation requirements, so as to improve the operation efficiency and controllability of the evaporator.
[0034] Further, in one embodiment, a material passing plate 15 is disposed in the discharging section 12. The material passing plate 15 is located below the third partition plate 16. A support seat 26 is disposed on the material passing plate 15. A lower end of the stirring rod 18 is rotatably connected to the support seat 26. A plurality of material passing openings 24 are formed in the material passing plate 15. The corresponding stirring rod 18 can be supported by the support seat 26 to ensure its stability during the working process. The material heated by the stirring rod 18 flows out and enters the discharging port 14 below through the material passing openings 24 in the material passing plate 15, thereby discharging from the discharging section 12.
[0035] Further, in one embodiment, regulating valves are disposed on both the exhaust pipe 5 and the steam transmission pipeline 6. The flow rate of the corresponding pipeline can be regulated through the regulating valve according to the operation requirements, and the operation is simple and fast, and the control is stable and efficient.
[0036] In summary, the MVR single-effect multi-body evaporator group of the present invention is composed of a separator 2 and multiple MVR evaporators 1. The housing of the MVR evaporator 1 is composed of a feed section 9, a heating section 10, and a discharge section 12. The steam inlet 3 is arranged on the side of the upper part of the heating section 10, and the steam outlet 4 is arranged on the side of the lower part of the heating section 10. The separator steam inlet 7 is arranged on the side of the lower part of the separator 2, and the separator steam inlet 7 is connected to the steam collecting pipe 8 through a steam conveying pipe 6. The steam outlet 4 is connected to the steam collecting pipe 8 through an exhaust pipe 5. The steam discharged from each MVR evaporator 1 through the steam outlet 4 can be collected and conveyed to the separator 2 through the steam collecting pipe 8 for treatment and then further processed by other equipment for recycling, which can enhance the overall utilization efficiency and management of steam and reduce production costs. A second partition plate 19 is arranged in the feed section 9, and a third partition plate 16 is arranged in the discharge section 12. The cavity of the heating section 10 is isolated by the second partition plate 19 and the third partition plate 16. A material passing pipe 17 is arranged in the heating section 10. The upper end of the material passing pipe 17 passes through the second partition plate 19 and is communicated with the feed section 9, and the lower end passes through the third partition plate 16 and is communicated with the discharge section 12. Steam enters the heating section 10 and heats the material entering the material passing pipe 17 through the material passing pipe 17. A stirring rod 18 is arranged in the material passing pipe 17, and the material entering the material passing pipe 17 can be stirred through the stirring rod 18 to enhance the efficiency of heat conduction heating treatment of the material. The MVR single-effect multi-body evaporator group of the present invention has a reasonable structure and is convenient to operate and use. The steam of multiple MVR evaporators is recycled through a steam collecting pipe and a separator, the heat conduction heating efficiency of each evaporator is improved, and the overall operation cost is reduced.
[0037] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.
Claims
1. The MVR single-effect multi-body evaporator group is characterized in that, It includes a separator (2) and multiple MVR evaporators (1). The housing of the MVR evaporator (1) consists of a feed section (9), a heating section (10), and a discharge section (12). A steam inlet (3) is provided on the side of the upper part of the heating section (10), and a steam outlet (4) is provided on the side of the lower part of the heating section (10); a separator steam inlet (7) is provided on the side of the lower part of the separator (2). The separator steam inlet (7) is connected to a steam transmission pipeline (6), and the steam transmission pipeline (6) is connected to a steam collection pipeline (8). The steam outlet (4) is connected to an exhaust pipe (5), and the exhaust pipe (5) is connected to the steam collection pipeline (8). A second partition plate (19) is provided in the feed section (9), a third partition plate (16) is provided in the discharge section (12), and a material passing pipe (17) is provided in the heating section (10). The upper end of the material passing pipe (17) passes through the second partition plate (19) and communicates with the feed section (9), and the lower end of the material passing pipe (17) passes through the third partition plate (16) and communicates with the discharge section (12); a stirring rod (18) is provided in the material passing pipe (17), and the stirring rod (18) is used to stir the material entering the material passing pipe (17).
2. The MVR single-effect multi-body evaporator group according to claim 1, characterized in that: A feed inlet (11) is provided on the side of the feed section (9), a discharge outlet (14) is provided at the bottom of the discharge section (12), and a drain outlet (13) is provided on the outer side wall of the discharge section (12). The height of the drain outlet (13) is above the third partition plate (16).
3. The MVR single-effect multi-body evaporator group according to claim 1, characterized in that: Inner partition plates (27) are provided on the inner wall of the material passing pipe (17), and the inner partition plates (27) are integrally bow-shaped; two of the inner partition plates (27) are in a group and are provided on both sides of the stirring rod (18). A gap is provided between the two inner partition plates (27) in the same group, and multiple groups of the inner partition plates (27) are evenly provided along the length direction of the material passing pipe (17).
4. The MVR single-effect multi-body evaporator group according to claim 3, wherein: Upper stirring plates (29) and lower stirring plates (28) are provided on the side of the stirring rod (18). The upper stirring plates (29) are provided on one side of the stirring rod (18), and the lower stirring plates (28) are provided on the other side of the stirring rod (18); one upper stirring plate (29) and one lower stirring plate (28) are in a group and are respectively located above and below a group of the inner partition plates (27).
5. The MVR single-effect multi-body evaporator group according to claim 1, characterized in that: Sealing sleeves (23) are provided on both the second partition plate (19) and the third partition plate (16). The upper end and the lower end of the material passing pipe (17) respectively pass through the corresponding sealing sleeves (23) and communicate with the feed section (9) and the discharge section (12).
6. The MVR single-effect multi-body evaporator group according to claim 1, characterized in that: Support ring plates (25) are provided on the inner walls of both the feed section (9) and the discharge section (12), and the second partition plate (19) and the third partition plate (16) are respectively connected to the corresponding support ring plates (25).
7. The MVR single-effect multi-body evaporator group according to claim 1, characterized in that: A first partition plate (20) is arranged in the feeding section (9). The first partition plate (20) is located above the second partition plate (19). A driving motor (21) is arranged on the first partition plate (20). An output shaft of the driving motor (21) is connected to an upper end of the stirring rod (18). A top sealing plate (22) is arranged at the top of the feeding section (9).
8. The MVR single-effect multi-body evaporator group according to claim 1, characterized in that: A material passing plate (15) is arranged in the discharging section (12). The material passing plate (15) is located below the third partition plate (16). A support seat (26) is arranged on the material passing plate (15). A lower end of the stirring rod (18) is rotatably connected to the support seat (26). A plurality of material passing openings (24) are arranged on the material passing plate (15).
9. The MVR single-effect multi-body evaporator group according to claim 1, characterized in that: Regulating valves are arranged on both the exhaust pipe (5) and the steam transmission pipeline (6).