CN112774863A

CN112774863A - Flat plate fog drop trapping device

Info

Publication number: CN112774863A
Application number: CN202011600744.9A
Authority: CN
Inventors: 郑钦臻; 吴刚
Original assignee: Jiangsu Shuangliang Low Carbon Industrial Technology Research Institute Co ltd
Current assignee: Jiangsu Shuangliang Low Carbon Industrial Technology Research Institute Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-05-11

Abstract

The invention provides a flat plate fog drop trapping device, wherein a plurality of trapping units are arranged in a shell; the trapping unit comprises two flat electrodes arranged in parallel and a plurality of driving electrodes which are arranged between the two flat electrodes and are electrically connected with each other; the driving electrode is a metal rod with a smooth surface, the diameter of the metal rod is not more than 5mm, and the metal rod is connected with a high-voltage end of a high-voltage power supply; and the low-voltage end of the high-voltage power supply and the flat plate electrode are both grounded. The driving electrode can generate a strong uneven high-voltage electrostatic field, and after the fog drops enter the catching device from the inlet, because the center of negative charges deviates to oxygen atoms, and meanwhile, the mass of the oxygen atoms is greater than that of hydrogen atoms, the whole water molecules deflect towards the positive pole of the electric field under the dragging action of the oxygen atoms, so that the whole fog drops form dipoles. Under the action of a strong high-voltage electrostatic field, the fog drops are deflected to the driving electrode or the flat electrode to flow, and when the fog drops move to the surface of the driving electrode or the flat electrode, a water film is formed and falls into the water collecting device to be collected.

Description

Flat plate fog drop trapping device

Technical Field

The invention relates to the technical field of smoke emission, in particular to a flat plate fog droplet trapping device.

Background

In the thermal power industry and other industries, the overall level of water resource utilization efficiency is still low, and considerable space is saved. Effective measures are actively taken, the comprehensive utilization rate of water is improved, water is saved, the water-saving water-.

At present, the chimney of various industries often discharges 'white smoke', 'white smoke' is actually water, and 'white smoke' discharge is actually waste of water resources.

Besides the waste of resources, the 'white smoke' also affects the visibility of surrounding residential areas and traffic roads and destroys the urban environment; in addition, the humidity in the downwind area can be increased, and the fog falls on the ground to cause the road surface around the cooling tower to be wet, slippery or frozen, thereby bringing great potential safety hazard to surrounding traffic, influencing the safety production of factories and influencing the safe operation of production equipment around the cooling tower.

How to recover water resources discharged from a chimney with high efficiency and low cost is a problem which needs to be continuously researched.

Disclosure of Invention

The invention aims to provide a flat plate fog drop trapping device which can efficiently and inexpensively complete white elimination and further realize the recovery of water resources in a chimney.

To achieve the above objects, the present invention provides a flat panel droplet catching device, comprising a housing having an inlet and an outlet; a plurality of trapping units are arranged in the shell; the trapping unit comprises two flat electrodes arranged in parallel and a plurality of driving electrodes which are arranged between the two flat electrodes and are electrically connected with each other; the driving electrode is a metal rod with a smooth surface, the diameter of the metal rod is not more than 5mm, and the metal rod is connected with a high-voltage end of a high-voltage power supply; and the low-voltage end of the high-voltage power supply and the flat plate electrode are both grounded.

Preferably, each of the trap units is arranged in parallel, and two adjacent trap units share the same plate electrode.

Preferably, two rows of the driving electrodes electrically connected to each other are provided in any one of the trap units.

Preferably, the drive electrodes in each of the capture cells are electrically connected.

Preferably, each of the drive electrodes is mounted to the housing through an insulating member.

Preferably, the bottom of the shell is also provided with a water collecting device, and the water collecting device is grounded.

According to the flat plate fog drop trapping device provided by the invention, the driving electrode is a metal rod with a smooth surface, and the diameter of the metal rod is not more than 5 mm; this is completely different from the needle-toothed discharge electrode. The needles, teeth, prickles and the like on the discharge electrode are used for promoting the point discharge phenomenon and further generating a large amount of ionic charges; the charged fog drops are charged due to the fact that the fog drops adsorb ion charges, the charged fog drops move radially under the action of electric field force, a liquid film is formed when the charged fog drops move to the surface of the white-removing electrode, and the charged fog drops flow back to the chimney under the action of gravity, so that the fog drops are collected.

However, the metal rod in the invention is a metal rod with smooth surface, and the diameter of the metal rod is not more than 5mm, so that after the fog drops enter the catching device from the inlet, a high-voltage power supply can be started, and an extremely strong uneven high-voltage electrostatic field can be generated between the driving electrode and the flat plate electrode; because the center of the negative charge is deviated to oxygen atoms, and meanwhile, the mass of the oxygen atoms is larger than that of the hydrogen atoms, the whole water molecules are deflected to the positive electrode of the electric field under the dragging action of the oxygen atoms, so that the whole fog drops form dipoles. Under the action of a strong high-voltage electrostatic field, the fog drops flow in a manner of being deflected to the driving electrode or the flat electrode, when the fog drops move to the surface of the driving electrode or the flat electrode, a water film is formed and falls into the water collecting device under the action of gravity, and the fog is collected.

Therefore, the completely different white elimination principles are adopted, the droplets are not required to be combined with charges generated by discharge, the droplets are excited into a dipole state through an uneven electric field generated by a smooth metal rod with a small diameter under high pressure, and the droplets are driven by the electric field to move so as to be collected; therefore, the fog drops are collected, the white elimination of the chimney is further realized, and the recovery of water resources discharged by the chimney is finally completed in a high-efficiency and low-cost mode.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of a flat panel droplet trap according to one embodiment of the present invention;

FIG. 2 is a schematic top view of the structure of FIG. 1;

FIG. 3 is a schematic top view of a flat panel droplet trap in accordance with another embodiment;

FIG. 4 is a schematic diagram showing the structural distribution of water molecules in the mist droplets under natural conditions;

FIG. 5 is a schematic diagram showing the structural distribution of water molecules in the mist droplets under a strong non-uniform electric field.

The reference numerals in fig. 1 to 3 are as follows:

1-inlet, 2-shell, 3-trapping unit, 4-water-collecting device;

3.1-driving electrode, 3.2-plate electrode, 3.3-high voltage power supply, 3.4-insulating component.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the invention is to provide a flat plate fog drop trapping device which can efficiently and inexpensively complete white elimination so as to realize the recovery of water resources in a chimney.

Please refer to fig. 1-3; FIG. 1 is a schematic diagram of a flat panel droplet trap according to one embodiment of the present invention; FIG. 2 is a schematic top view of the structure of FIG. 1; fig. 3 is a schematic top view of a flat plate droplet trap in accordance with another embodiment.

In a specific embodiment, the main structure of the flat plate droplet collecting device provided by the invention is a shell 2, the shell 2 can be made of metal materials, and the overall shape of the shell can be a square box body; along the flue gas flow direction, casing 2 still is equipped with import 1 and export, and both can locate casing 2's relative both sides respectively. The housing 2 is grounded.

A plurality of trap units 3 are provided in the casing 2. Each trap unit 3 comprises two plate electrodes 3.2 arranged substantially parallel and parallel to the direction of gas flow.

A plurality of driving electrodes 3.1 are arranged in the space between the two flat electrodes 3.2, and the driving electrodes are electrically connected with each other and are connected with a high-voltage power supply 3.3. The high-voltage end of the high-voltage power supply 3.3 is connected with the driving electrode 3.1, and the low-voltage end is grounded.

The driving electrode 3.1 is a metal rod with a smooth surface; the "smooth" is referred to as a structure of needle-punching on the outer surface of the discharge electrode, so as to avoid the occurrence of the point discharge phenomenon. The diameter of the drive electrode 3.1 is not more than 5mm, so that it is possible to ensure that there is a large unevenness in the generated electric field.

Furthermore, each drive electrode 3.1 may be mounted on the housing 2 by means of an insulating member 3.4.

The trap units 3 are also arranged in parallel as a whole, and the same plate electrode 3.2 can be used for two adjacent trap units 3. Each plate electrode 3.2 is grounded.

As shown in fig. 3, two rows of drive electrodes 3.1 electrically connected to each other may also be provided in the capture unit 3.

Of course, electrical connections are also maintained between all the drive electrodes 3.1 in each capture cell 3.

In order to facilitate the liquid recovery, a water collecting device 4 may be provided at the bottom of the housing 2 and grounded.

According to the flat plate fog drop trapping device provided by the invention, the driving electrode is a metal rod with a smooth surface, and the diameters of the driving electrode and the metal rod are not more than 5 mm; this is completely different from the needle-toothed discharge electrode.

The needles, teeth, prickles and the like on the discharge electrode are used for promoting the point discharge phenomenon and further generating a large amount of ionic charges; the charged fog drops are charged due to the fact that the fog drops adsorb ion charges, the charged fog drops move radially under the action of electric field force, a liquid film is formed when the charged fog drops move to the surface of the white-removing electrode, and the charged fog drops flow back to the chimney under the action of gravity, so that the fog drops are collected.

However, the metal rod in the invention is a metal rod with smooth surface, and the diameter of the metal rod is not more than 5mm, so that after the fog drops enter the catching device from the inlet, a high-voltage power supply can be started, and an extremely strong uneven high-voltage electrostatic field can be generated between the driving electrode and the flat plate electrode; because the center of the negative charge is deviated to oxygen atoms, and meanwhile, the mass of the oxygen atoms is larger than that of hydrogen atoms, the whole water molecules are deflected to the positive electrode of the electric field under the dragging action of the oxygen atoms, so that the whole fog drops form dipoles; reference may be made to fig. 4 and 5.

Under the action of a strong high-voltage electrostatic field, the fog drops flow in a manner of being deflected to the driving electrode or the flat electrode, when the fog drops move to the surface of the driving electrode or the flat electrode, a water film is formed and falls into the water collecting device under the action of gravity, and the fog is collected.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The flat plate droplet collecting device provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A flat panel droplet trap comprising a housing (2) having an inlet (1) and an outlet; a plurality of trapping units (3) are arranged in the shell (2); the trapping unit (3) comprises two flat electrodes (3.2) which are arranged in parallel, and a plurality of driving electrodes (3.1) which are arranged between the two flat electrodes (3.2) and are electrically connected with each other; the driving electrode (3.1) is a metal rod with a smooth surface, the diameter of the metal rod is not more than 5mm, and the metal rod is connected with a high-voltage end of a high-voltage power supply (3.3); the low-voltage end of the high-voltage power supply (3.3) and the flat plate electrode (3.2) are both grounded.

2. The flat plate droplet catching device of claim 1, wherein each catching unit (3) is arranged in parallel, and two adjacent catching units (3) share the same flat plate electrode (3.2).

3. The flat plate droplet catching device of claim 2, characterized in that each catching unit (3) is arranged in parallel, and two adjacent catching units (3) share the same flat plate electrode (3.2).

4. A flat panel droplet trap device according to any of claims 1-3, wherein two rows of said drive electrodes (3.1) are arranged in each of said trap cells (3) and electrically connected to each other.

5. A flat panel droplet trap device according to claim 4, wherein the drive electrodes (3.1) in each of the trap cells (3) are electrically connected.

6. The flat panel droplet trap of claim 5, wherein each of the drive electrodes (3.1) is mounted to the housing (2) through an insulating member (3.4).

7. The flat plate mist trap device according to claim 6, wherein the bottom of the housing (2) is further provided with a water collecting device (4), and the water collecting device (4) is grounded.