Single-effect evaporator
By increasing the condensing area and optimizing the condenser structure, the problem of low efficiency of the single-effect evaporator was solved, efficient concentration and energy saving were achieved, and the company's production costs were reduced.
Patent Information
- Application Number
- CN202422828684.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-11-20
AI Technical Summary
The existing single-effect evaporator has a large heating surface and a small condensing surface, resulting in low efficiency, serious energy waste, and increased production costs for enterprises.
A single-effect evaporator is designed. By increasing the condensing area of the plate condenser to more than six times the heating area, a vacuum port is set in the cooler, and the condenser structure is optimized to increase the vacuum degree and lower the vaporization point of the material.
Without changing the volume, it significantly improves condensation efficiency, reduces energy consumption, simplifies operation and maintenance processes, and reduces production costs.
Smart Images
Figure CN223404431U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of solution concentration, and particularly relates to a single-effect evaporator. Background Art
[0002] When a solution evaporates in an evaporator, the secondary steam produced is not reused. This evaporation operation is called single-effect evaporation. An evaporator that uses this method is called a single-effect evaporator. A single-effect evaporator is a common evaporation device that heats and transports the material, evaporating the volatile components to achieve concentration. Single-effect evaporators are used when the material is corrosive, requiring very expensive structural materials, or when the steam is contaminated and cannot be reused.
[0003] The existing single-effect evaporator has a large heating surface and a small condensing surface, resulting in low efficiency, serious energy waste, and increased production costs for enterprises. Therefore, there is an urgent need for a new single-effect evaporator that can increase the ratio of its condensing surface to heating surface and improve condensing efficiency without changing its volume.
[0004] In view of this, the present utility model is proposed. Utility Model Content
[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a single-effect evaporator.
[0006] To achieve the above objectives, the present invention provides the following technical solutions:
[0007] A single-effect evaporator includes a heating chamber whose bottom is connected to a material return port at the bottom of the evaporation chamber; a material exhaust port of the heating chamber is connected to the middle of the evaporation chamber; the top of the evaporation chamber is connected to the top of a plate condenser; the bottom of the plate condenser is connected to the top of a cooler; a cold liquid tank is fixed to the bottom of the cooler for collecting secondary steam condensate; a steam pipe is also provided in the heating chamber for continuously heating the material; a cooling water coil is provided in the cooler for reducing the temperature of the secondary steam condensate; and a vacuum port is also provided at the top of the cooler for extracting air from the single-effect evaporator. The condensing area of the plate condenser and cooler must be at least six times that of the heater area to achieve high-vacuum, high-efficiency concentration. Low-temperature concentration can be achieved, with the lowest temperature reaching 30°C to evaporate moisture from the material, thereby achieving energy conservation.
[0008] Specifically, the plate condenser includes a secondary steam inlet connected to the top of the evaporation chamber, a drain port connected to the top of the cooler, and a plate condensing device, wherein the plate condensing device includes a plurality of vertically arranged and parallel cooling hollow plates, and heat dissipation gaps are left between adjacent cooling hollow plates. The top of each cooling hollow plate is connected to the air inlet of the plate condenser, and the bottom of each cooling hollow plate is connected to the drain port of the plate condenser.
[0009] Furthermore, the plate condenser further comprises two vertical plates for fixing a plurality of cooling hollow plates, and the plurality of cooling hollow plates are fixed between the two vertical plates by long bolts.
[0010] Furthermore, the top of the plate condenser is provided with two air inlets, each of which is connected to the secondary steam exhaust port of the evaporation chamber; the bottom of the plate condenser is provided with two liquid outlets, each of which is connected to the top of the cooler.
[0011] Specifically, a cooling water coil is provided in the cooler, a cooling water inlet connected to the cooling water coil is provided at the bottom of the side wall of the cooler, and a cooling water outlet connected to the cooling water coil is provided at the top; the cooling water coil is spirally arranged in the cooler to increase the contact area with the condensate and better cool the condensate.
[0012] Specifically, a vacuum gauge for displaying the vacuum degree in the evaporation chamber is further provided on the top of the evaporation chamber.
[0013] Specifically, the steam inlet of the steam pipe is located on the outer wall of the heating chamber and is lower than the material exhaust port of the heating chamber, and the steam outlet of the steam pipe is set on the outer wall of the heating chamber and is higher than the material reflux port.
[0014] Specifically, a cold liquid tank drain port is provided on the circumference of the arched top of the cold liquid tank, a plurality of secondary drain ports for releasing secondary steam condensate are provided in the middle of the cold liquid tank, and a main drain port for discharging secondary steam condensate is provided on the circumference of the bottom of the cold liquid tank.
[0015] Specifically, the bottom of the plate condenser is flush with the top of the evaporation chamber.
[0016] Specifically, the heating chamber and the evaporation chamber, the evaporation chamber and the plate condenser, and the plate condenser and the cooler are all connected through pipelines, and the cooler is directly connected to the cold liquid tank.
[0017] Specifically, outer walls of the heating chamber and the evaporation chamber are both provided with heat insulation cotton.
[0018] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:
[0019] The plate condenser of the present invention consists of multiple vertically arranged and parallel cooling hollow plates, with heat dissipation gaps between adjacent cooling hollow plates. This design significantly increases the condensation area, thereby improving condensation efficiency. In other words, through rational design, the entire evaporation system achieves higher condensation efficiency without changing its volume. This compact structural design facilitates installation and maintenance, saving space. Furthermore, the condensation area of the device, before the improvement, was twice the heating area; after the improvement, it is more than six times the heating area. Furthermore, a vacuum port is provided in the cooler, significantly increasing the vacuum level within the single-effect evaporator, thereby lowering the vaporization point of the water in the material and achieving water vaporization at a low temperature of 30°C. This significantly reduces energy consumption and achieves high-vacuum, efficient concentration. In summary, the single-effect evaporator provided by the present invention optimizes the condenser design through vacuuming, significantly improving condensation efficiency, reducing resource waste, saving energy, significantly reducing production costs for enterprises, and simplifying operation and maintenance. This design has high practical value and promotion prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The accompanying drawings are incorporated into and constitute a part of this specification and, together with the description, are used to explain the principles of the present invention.
[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0022] Figure 1 It is a structural diagram of the utility model;
[0023] Figure 2 for Figure 1 A top view of
[0024] Figure 3 This is a structural diagram of the plate condenser of the utility model.
[0025] Among them: 1 is the heating chamber; 11 is the material exhaust port; 12 is the steam inlet; 13 is the steam outlet; 14 is the paste inlet and outlet; 2 is the evaporation chamber; 21 is the material reflux port; 22 is the secondary steam exhaust port; 3 is the plate condenser; 31 is the secondary steam inlet; 32 is the drain port; 33 is the cooling hollow plate; 34 is the vertical plate; 35 is the long bolt; 4 is the cooler; 41 is the cooling water inlet; 42 is the cooling water outlet; 43 is the vacuum port; 5 is the cooling liquid tank; 51 is the cooling liquid tank vent; 52 is the secondary drain port; 53 is the main drain port. DETAILED DESCRIPTION
[0026] Exemplary embodiments will now be described in detail, with examples shown in the accompanying drawings. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present invention. Instead, they are merely examples consistent with certain aspects of the present invention as detailed in the appended claims.
[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
[0028] Example
[0029] See also Figure 1-3 As shown, a single-effect evaporator includes a heating chamber 1 whose bottom is connected to the material reflux port 21 at the bottom of the evaporation chamber 2, the material exhaust port 11 of the heating chamber 1 is connected to the middle of the evaporation chamber 2, the top of the evaporation chamber 2 is connected to the top of the plate condenser 3, the bottom of the plate condenser 3 is connected to the top of the cooler 4, and the bottom of the cooler 4 is fixed with a cold liquid tank 5 for collecting secondary steam condensate; the heating chamber 1 is also provided with a steam pipe for continuously heating the material, and the cooler 4 is provided with a cooling water coil for reducing the temperature of the secondary steam condensate; the top of the cooler 4 is also provided with a vacuum port 43 for extracting air from the single-effect evaporator.
[0030] Specifically, the plate condenser 3 includes a secondary steam inlet 31 connected to the top of the evaporation chamber 2, a drain port 32 connected to the top of the cooler 4, and a plate condensing device, the plate condensing device includes a plurality of vertically arranged and parallel cooling hollow plates 33, and heat dissipation gaps are left between adjacent cooling hollow plates 33. The top of each cooling hollow plate 33 is connected to the secondary steam inlet 31 of the plate condenser 3, and the bottom of each cooling hollow plate 33 is connected to the drain port 32 of the plate condenser 3; see Figure 3 shown.
[0031] Furthermore, the plate condenser 3 further includes two vertical plates 34 for fixing a plurality of cooling hollow plates 33 , and the plurality of cooling hollow plates 33 are fixed between the two vertical plates 34 by long bolts 35 .
[0032] Furthermore, two secondary steam inlets 31 are provided at the top of the plate condenser 3, and each of the secondary steam inlets 31 is connected to the secondary steam exhaust port 22 of the evaporation chamber 2; two drain ports 32 are provided at the bottom of the plate condenser 3, and each of the drain ports 32 is connected to the top of the cooler 4.
[0033] Specifically, a cooling water coil is provided in the cooler 4, a cooling water inlet 41 connected to the cooling water coil is provided at the bottom of the side wall of the cooler 4, and a cooling water outlet 42 connected to the cooling water coil is provided at the top; the cooling water coil is spirally arranged in the cooler 4 to increase the contact area with the condensate and better cool the condensate.
[0034] Specifically, a vacuum gauge for displaying the vacuum degree in the evaporation chamber 2 is further provided on the top of the evaporation chamber 2 .
[0035] Specifically, the steam inlet 12 of the steam pipe is located on the outer wall of the heating chamber 1 and lower than the material exhaust port 11 of the heating chamber, and the steam outlet 13 of the steam pipe is set on the outer wall of the heating chamber 1 and higher than the material reflux port 21.
[0036] Specifically, a cold liquid tank drain port 51 is provided on the circumference of the arched top of the cold liquid tank 5, a plurality of secondary drain ports 52 for releasing secondary steam condensate are provided in the middle of the cold liquid tank 5, and a main drain port 53 for discharging secondary steam condensate is provided on the circumference of the bottom of the cold liquid tank 5.
[0037] Specifically, the bottom of the plate condenser 3 is flush with the top of the evaporation chamber 2 .
[0038] Specifically, the heating chamber 1 and the evaporation chamber 2 , the evaporation chamber 2 and the plate condenser 3 , and the plate condenser 3 and the cooler 4 are all connected through pipelines, and the cooler 4 and the cold liquid tank 5 are directly connected.
[0039] This embodiment also provides an operating method of a single-effect evaporator, which is as follows:
[0040] High-temperature steam is continuously introduced into the steam pipe. After the concentrated material enters from the paste inlet and outlet 15 at the bottom of the heating chamber 1, the vacuum degree in the single-effect evaporator is evacuated to 0.09 MPa. The concentrated material flows upward through the steam pipe. As the vacuum degree in the single-effect evaporator increases, the water in the concentrated material (gasified at 30°C) is more easily heated and vaporized, thereby forming secondary steam and residual material. The secondary steam and residual material enter the evaporation chamber 2 through the material exhaust port 11. The residual material continues to flow downward through the material reflux port 21 to the heating chamber 1 for concentration. The secondary steam then passes through the secondary steam exhaust port 22 and the secondary steam inlet 31 in sequence and enters the plate condenser 3. After condensation by the cooling hollow plate 33, the secondary steam becomes condensate and flows from the drain port 32 to the cooler 4. In addition, cooling water is continuously passed through the cooling water coil to cool the condensate flowing through the cooler 4. The cooled condensate is collected in the cold liquid tank 5 for subsequent processing.
[0041] The above description is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention.
[0042] It should be understood that the present invention is not limited to the above description and that various modifications and changes can be made without departing from the scope of the present invention. The scope of the present invention is limited only by the appended claims.
Claims
1. A single-effect evaporator, characterized in that: The invention comprises a heating chamber (1) whose bottom is connected to a material return port (21) at the bottom of an evaporation chamber (2); a material exhaust port (11) of the heating chamber (1) is connected to the middle of the evaporation chamber (2); the top of the evaporation chamber (2) is connected to the top of a plate condenser (3); the bottom of the plate condenser (3) is connected to the top of a cooler (4); a cold liquid tank (5) for collecting secondary steam condensate is fixedly provided at the bottom of the cooler (4); a steam pipe for continuously heating the material is also provided in the heating chamber (1); a cooling water coil for reducing the temperature of the secondary steam condensate is provided in the cooler (4); and a vacuum port (43) for extracting air from the single-effect evaporator is also provided at the top of the cooler (4).
2. The single-effect evaporator according to claim 1, characterized in that: The plate condenser (3) comprises a secondary steam inlet (31) connected to the top of the evaporation chamber (2), a drain port (32) connected to the top of the cooler (4), and a plate condensing device, wherein the plate condensing device comprises a plurality of cooling hollow plates (33) arranged vertically and in parallel, with heat dissipation gaps being left between adjacent cooling hollow plates (33), the top of each cooling hollow plate (33) being connected to the secondary steam inlet (31) of the plate condenser (3), and the bottom of each cooling hollow plate (33) being connected to the drain port (32) of the plate condenser (3).
3. The single-effect evaporator according to claim 2, characterized in that: The plate condenser (3) further comprises two vertical plates (34) for fixing a plurality of cooling hollow plates (33), and the plurality of cooling hollow plates (33) are fixed between the two vertical plates (34) by long bolts (35).
4. The single-effect evaporator according to claim 2, characterized in that: The top of the plate condenser (3) is provided with two secondary steam inlets (31), and each of the secondary steam inlets (31) is connected to the secondary steam exhaust port (22) of the evaporation chamber (2); the bottom of the plate condenser (3) is provided with two drain ports (32), and each of the drain ports (32) is connected to the top of the cooler (4).
5. The single-effect evaporator according to claim 1, characterized in that: A cooling water coil is provided in the cooler (4), a cooling water inlet (41) connected to the cooling water coil is provided at the bottom of the side wall of the cooler (4), and a cooling water outlet (42) connected to the cooling water coil is provided at the top.
6. The single-effect evaporator according to claim 1, characterized in that: A vacuum gauge for displaying the vacuum degree in the evaporation chamber (2) is also provided on the top of the evaporation chamber (2).
7. The single-effect evaporator according to claim 1, characterized in that: The steam inlet (12) of the steam pipe is located on the outer wall of the heating chamber (1) and is lower than the material exhaust port (11) of the heating chamber, and the steam outlet (13) of the steam pipe is arranged on the outer wall of the heating chamber (1) and is higher than the material reflux port (21).
8. The single-effect evaporator according to claim 1, characterized in that: A cold liquid tank drain port (51) is also provided on the circumference of the arched top of the cold liquid tank (5), a plurality of secondary drain ports (52) for releasing secondary steam condensate are provided in the middle of the cold liquid tank (5), and a main drain port (53) for discharging secondary steam condensate is provided on the circumference of the bottom of the cold liquid tank (5).
9. The single-effect evaporator according to claim 1, characterized in that: The bottom of the plate condenser (3) is flush with the top of the evaporation chamber (2).
10. The single-effect evaporator according to claim 1, characterized in that: The heating chamber (1) and the evaporation chamber (2), the evaporation chamber (2) and the plate condenser (3), and the plate condenser (3) and the cooler (4) are all connected through pipelines, and the cooler (4) and the cold liquid tank (5) are directly connected.