CN217939170U

CN217939170U - Combined demister for evaporation

Info

Publication number: CN217939170U
Application number: CN202222342187.6U
Authority: CN
Inventors: 张小江; 陈帮山; 陈竹林; 周齐; 赵拓
Original assignee: Jiangsu Sunevar Energy Technology Co ltd
Current assignee: Jiangsu Sunevar Energy Technology Co ltd
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2022-12-02
Anticipated expiration: 2032-09-01

Abstract

The utility model provides a combination formula demister is used in evaporation, including barrel, defoaming subassembly, belt cleaning device, business turn over device. The air inlet pipe of the inlet and outlet device penetrates into the cylinder body and penetrates through the defoaming assembly and the cleaning device. The cleaning device comprises a first water pipe arranged at the upper part of the air inlet pipe, a second water pipe is arranged at the lower part of the air inlet pipe, the first water pipe is communicated with at least one first spray head which is vertically downward, and the second water pipe is communicated with at least one second spray head which is vertically upward; the defoaming component comprises a wire mesh demister and a baffle plate demister: the wire mesh demister comprises a wire mesh, the wire mesh is fixedly arranged on the inner wall of the cylinder, and a grid is arranged on the end face of the wire mesh; the baffle plate demister comprises a second supporting device, the second supporting device is fixedly arranged on the inner wall of the cylinder body, and corrugated plates are uniformly distributed and hung on the second supporting device; the silk screen demister is arranged above the baffle plate demister. The utility model discloses can improve defogging efficiency, ensure the secondary steam purity, and set up self-cleaning device and wash the defoaming subassembly.

Description

Combined demister for evaporation

Technical Field

The utility model belongs to the technical field of the vapor-liquid separation of evaporation equipment, concretely relates to combination formula demister is used in evaporation.

Background

In the evaporation crystallization process, the flow speed of secondary steam discharged from an evaporation chamber or a flash evaporation chamber of an evaporation device is generally higher, more entrainment or liquid drops can be taken away, and the risk of material mixing of the whole system and the possibility of water quality pollution of condensed water are increased. Therefore, in order to further capture the mist or liquid droplets in the secondary steam, reduce the liquid droplets from entering the compressor to a greater extent, avoid damage to the compressor impeller, and further reduce the loss of useful products and the pollution to the condensate, a demister is usually arranged at the outlet of the secondary steam such as an evaporation chamber, a flash evaporation chamber, a falling film heat exchanger, a rising film heat exchanger, and the like of the evaporator. The more common demister in the present evaporation apparatus comprises: wire mesh demister, baffle demister, candle demister, etc.

For example, patent document No. CN205913956U discloses a novel combined efficient defoaming assembly, which comprises a housing, wherein the housing has an air inlet and an air outlet, a first-stage gas regulating distribution disc, a first-stage spraying and flushing device, a baffle plate demister, a second-stage gas regulating distribution disc, a second-stage spraying and flushing device and a wire mesh demister are sequentially arranged in the housing from the air inlet to the air outlet, and a first liquid discharge port and a second liquid discharge port are respectively arranged at the bottoms of the baffle plate demister and the wire mesh demister. The utility model adopts two-stage foam destroyers to remove liquid drops with a diameter of 30 μm and more than 5 μm respectively, so that the foam removing efficiency is guaranteed; the gas can be uniformly distributed under the action of the gas regulating distribution disc, so that the uniform washing of the gas flow on the demister can be effectively prevented, and the gas flow speed required by the demister is achieved; through spraying washing unit in grades, can effectively prevent the scale deposit of demister internals, prolong the operating cycle, the device takes up an area of for a short time, and the installation is easy, easy operation, and it is effectual to remove the foam.

However, the defoaming device is complex to install, adopts a horizontal structure, and has the disadvantages that gas is difficult to flow vertically and the working efficiency of the device is general; although the device is additionally provided with the grading spraying and flushing device, the flushing device is started by manual operation, and the convenience is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an evaporation is with combination formula demister, simple structure, the installation is convenient to realize that demisting efficiency improves and ensures the high-purity purpose of secondary steam after the double separation, and reach the automatic cleaning device who sets up and regularly wash the effect of avoiding blockking up to silk screen demister and baffling board demister.

A combined demister for evaporation comprises a cylinder, a defoaming component, a cleaning device and an inlet and outlet device;

the inlet and outlet device comprises an air inlet pipe, and the air inlet pipe penetrates into the cylinder body and penetrates through the defoaming assembly and the cleaning device;

belt cleaning device is including laying the first water pipe on intake pipe upper portion, and the second water pipe has been laid to the lower part of intake pipe, wherein: the first water pipe is communicated with at least one first spray head which is vertically downward, and the second water pipe is communicated with at least one second spray head which is vertically upward;

the defoaming subassembly, defoaming subassembly include silk screen demister and baffling board demister, wherein: the screen mesh demister comprises a screen mesh, the screen mesh is fixedly arranged on the inner wall of the cylinder body, and a grid is arranged on the end face of the screen mesh;

the baffle plate demister comprises a second supporting device, the second supporting device is fixedly arranged on the inner wall of the cylinder body, and corrugated plates are uniformly distributed and hung on the second supporting device; the silk screen demister is arranged above the baffle plate demister.

Preferably, the inlet and outlet device further comprises a pipe cover, an air inlet, an air outlet cover, a valve and a liquid outlet; the pipe cover is arranged on the air inlet, the air inlet is communicated with the air inlet pipe, the air outlet is arranged on the outer wall of the barrel and is communicated with the interior of the barrel, the position of the air outlet is higher than that of the first water pipe, the air outlet cover is arranged on the air outlet, the valve is arranged on the liquid discharge port, and the liquid discharge port is communicated with the bottom of the barrel.

Preferably, the first water pipe is also communicated with a first water inlet; the second water pipe is also communicated with a second water inlet.

Preferably, the first water pipe and the second water pipe are both annular water pipes provided with four branch water pipes.

The utility model has the advantages that: the utility model discloses set up combination formula demister in evaporation equipment's secondary steam exit, combination formula demister includes the barrel, removes foam subassembly, belt cleaning device, business turn over device. The defoaming component is arranged in the cylinder body and comprises a wire mesh demister and a baffle plate demister; gas-liquid mixture with certain flow velocity enters the bottom of the cylinder body through the gas inlet pipe of the inlet and outlet device and then is upwards contacted with the baffle plate demister, the flow direction of the fluid is changed rapidly, so that liquid drops and solid particles with larger inertia collide with the wall of the corrugated plate to be separated from the flowing gas, and the gas flows upwards from a channel between the corrugated plates, so that the purpose of primary gas-liquid separation is achieved; the gas then passes upwardly through the wire mesh of the wire mesh demister, which further separates the remaining liquid droplets in the gas, which is a second gas-liquid separation.

After the double separation, the gas is substantially free of entrainment and the high purity of the gas is ensured. Meanwhile, the utility model is of a vertical structure, the installation is simple and convenient, and the vertical structure ensures the vertical flow of gas, increases the working capacity and improves the working efficiency of the device; the cleaning device arranged in the cylinder body can automatically clean the defoaming component by means of air pressure change under the condition that the defoaming component is blocked.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of a part of the structure of the cleaning device of the present invention;

FIG. 3 is a schematic view of the structure of the wire mesh demister of the present invention;

fig. 4 is a schematic structural view of the baffle plate demister of the present invention.

Labeled as: 1. a barrel; 2. a cylinder cover; 3. an air inlet; 4. an air inlet pipe; 5. a wire mesh demister; 6. a wire mesh; 7. a grid; 8. a first support device; 9. a baffle demister; 10. a corrugated plate; 11. a second supporting means; 12. a first water inlet; 13. a first water pipe; 14. a first nozzle; 15. a second water inlet; 16. a second water pipe; 17. a second nozzle; 18. an air outlet; 19. an air outlet cover; 20. a valve; 21. and a liquid outlet.

Detailed Description

As shown in fig. 1 to 4, a combined demister for evaporation comprises a cylinder 1, an air inlet pipe 4, a wire mesh demister 5 and a baffle demister 9.

The in-and-out device comprises an air inlet pipe 4, and the air inlet pipe 4 penetrates into the barrel body 1 and penetrates through the defoaming assembly and the cleaning device.

The cleaning device comprises a first water pipe 13 arranged at the upper part of the air inlet pipe 4, a second water pipe 16 is arranged at the lower part of the air inlet pipe 4, and the first water pipe 13 and the second water pipe 16 are both annular water pipes provided with four branch water pipes; wherein: the first water pipe 13 is communicated with at least one vertically downward first spray head 14, preferably, four side-by-side first spray heads 14 are arranged on each branch water pipe of the first water pipe 13, and other numbers and positions are also possible; the second water pipe 16 is connected to at least one second nozzle 17 extending vertically upward, and preferably, four second nozzles 17 are installed side by side on each branch water pipe of the second water pipe 16, or other numbers and positions are also possible. First water pipe 13 communicates first water inlet 12 and first water inlet 12 installs on the outer wall of barrel 1, and second water pipe 16 communicates second water inlet 15 and second water inlet 15 installs on the outer wall of barrel 1.

The defoaming assembly comprises a wire mesh demister 5 and a baffle demister 9, wherein: the screen demister 5 comprises a screen 6, the screen 6 is fixedly installed on the inner wall of the cylinder body 1, a grid 7 is installed on the end face of the screen 6, the screen 6 and the grid 7 are welded on a first supporting device 8 to form the screen demister 5, and the screen demister 5 is integrally welded on the inner wall of the cylinder body 1. The wire mesh demister 5 is arranged below the first water pipe 13.

The baffle plate demister 9 comprises a corrugated plate 10, the corrugated plates 10 are welded on a second supporting device 11 at certain intervals to form the baffle plate demister 9, the baffle plate demister 9 is integrally welded on the inner wall of the barrel body 1, and the wire mesh demister 5 is arranged above the baffle plate demister 9. The baffle demister 9 is arranged above the second water pipe 16.

The in-out device also comprises a pipe cover 2, an air inlet 3, an air outlet 18, an air outlet cover 19, a valve 20 and a liquid outlet 21; the pipe cover 2 is arranged on the air inlet 3, the air inlet 3 is communicated with the air inlet pipe 4, the air outlet 18 is arranged on the outer wall of the barrel body 1 and is communicated with the interior of the barrel body 1, the position of the air outlet 18 is higher than that of the first water pipe 13, the air outlet cover 19 is arranged on the air outlet 18, the valve 20 is arranged on the liquid discharge port 21, and the liquid discharge port 21 is communicated with the bottom of the barrel body 1.

The combined demister for evaporation provided by the application has the working process that: the gas-liquid mixture with certain flow rate discharged from the secondary steam outlet of the evaporation device enters the communicated gas inlet pipe 4 through the gas inlet 3, the gas-liquid mixture firstly contacts with the baffle plate demister 9 at the lower part of the cylinder 1 when flowing upwards, liquid drops and solid particles with larger inertia in the gas-liquid mixture collide with the corrugated plate 10 and then are separated from flowing gas, and the gas with residual mist after primary separation continuously flows upwards through the channel of the corrugated plate 10 with gaps. The gas with mist is contacted with the wire mesh demister 5, the mist is attached to the surface of the wire mesh 6 after colliding with the wire mesh 6 due to the rising inertia effect, the mist on the surface of the wire mesh 6 is continuously diffused and is gathered after gravity sedimentation to form larger liquid drops which fall from the wire mesh 6, the gas after double separation flows upwards through the wire mesh 6 and is discharged from the gas outlet 18, the liquid drops and solid particles obtained by the two times of separation are discharged from the liquid discharge port 21 at the lower part of the cylinder body 1, and the discharge speed can be controlled by a valve on the liquid discharge port 21. When the silk screen demister 5 and the baffle plate demister 9 in the barrel 1 are blocked, the air pressure in the barrel 1 is changed, a water source is respectively connected to the first water pipe 13 and the second water pipe 16 from the first water inlet 12 and the second water inlet 15, and the automatic cleaning function is realized by utilizing the pressure difference: the first spray head 14 sprays the wire mesh demister 5 downward, the second spray head 17 sprays the baffle demister 9 upward, and the sewage is also discharged from the liquid discharge port 21.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined demister for evaporation is characterized by comprising a cylinder, a defoaming assembly, a cleaning device and an inlet and outlet device;

the inlet and outlet device comprises an air inlet pipe (4), and the air inlet pipe (4) penetrates into the barrel body (1) and penetrates through the defoaming assembly and the cleaning device;

belt cleaning device is including laying first water pipe (13) on intake pipe (4) upper portion, and second water pipe (16) have been laid to the lower part of intake pipe (4), wherein: the first water pipe (13) is communicated with at least one first spray head (14) which vertically faces downwards, and the second water pipe (16) is communicated with at least one second spray head (17) which vertically faces upwards;

the defoaming component comprises a wire mesh demister (5) and a baffle plate demister (9), wherein: the screen demister (5) comprises a screen (6), the screen (6) is fixedly arranged on the inner wall of the barrel body (1), and a grid (7) is arranged on the end face of the screen (6);

the baffle plate demister (9) comprises a second supporting device (11), the second supporting device (11) is fixedly arranged on the inner wall of the cylinder body (1), and the second supporting device (11) is uniformly provided with corrugated plates (10) in a penetrating and hanging manner; the wire mesh demister (5) is arranged above the baffle plate demister (9).

2. The combined demister for evaporation according to claim 1, wherein the inlet and outlet device further comprises a pipe cover (2), an air inlet (3), an air outlet (18), an air outlet cover (19), a valve (20) and a liquid outlet (21); the pipe cover (2) is arranged on the air inlet (3), the air inlet (3) is communicated with the air inlet pipe (4), the air outlet (18) is arranged on the outer wall of the barrel body (1) and is communicated with the interior of the barrel body (1), the position of the air outlet (18) is higher than that of the first water pipe (13), the air outlet cover (19) is arranged on the air outlet (18), the valve (20) is arranged on the liquid discharge port (21), and the liquid discharge port (21) is communicated with the bottom of the barrel body (1).

3. The combined demister for evaporation according to claim 1, wherein the first water pipe (13) is further communicated with a first water inlet (12); the second water pipe (16) is also communicated with a second water inlet (15).

4. The combined demister for evaporation according to claim 1, wherein the first water pipe (13) and the second water pipe (16) are both annular water pipes provided with four branch water pipes.