CN2699981Y

CN2699981Y - Equipment for removing smoke and dust

Info

Publication number: CN2699981Y
Application number: CN 200420035619
Authority: CN
Inventors: 王长皓; 王鹤
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-16
Filing date: 2004-04-16
Publication date: 2005-05-18
Anticipated expiration: 2014-04-16

Abstract

The utility model relates to the equipment for removing smoke and dust. Spraying drops or particle flows are introduced for the equipment or a system, an electric corona field with opposite polarity is respectively arranged on the path of the polluted air flow, the liquid drop or the particle flows. When the smoke, dust particles or the particle flow pass through the electric corona field, positive charges and negative charges are respectively charged. The positive charge and the negative charge are mutually attracted and impacted; polluted particles are adsorbed on the liquid drop or the particles of the particle flow and falls along the liquid drop or the particles of the particle flow. Clean air is separated out and discharged from dust flow. After general processing, the polluted particles are separated from the liquid drop or the particles of the particle flow; the liquid drop or the particle of the particle flow can be used circularly. The utility model has scientific theory, reasonable design, high cleaning efficiency, small volume of equipments, and low cost. The utility model is the environmental protection equipment with low cost, good application, high efficiency, and good technical performance.

Description

The cleaning equipment of flue dust, dust

Technical field:

The utility model relates to a kind of flue dust in the field of environment protection, the cleaning equipment of dust.

Background technology:

At present, most effective in the purification method of various flue dust and dust with the electrostatic depuration method, move most economical.But the cleaning equipment of various electrostatic methods all is that the different electrode of dependence form removes to adsorb contamination particle, and this has just fundamentally restricted the application and the development of electrostatic depuration method.

(1) purify owing to relying on electrode to adsorb, limited by the migration velocity of electrostatic field, dust-contained airflow speed can only be very low, generally is no more than 2M/s, and the volume of cleaning equipment and floor space are increased, and cost significantly improves, so that a lot of occasions can't be used.

(2) because particle accumulate absorption on pole plate, the thickness of deposits on the pole plate constantly increases, electric-field intensity reduction even disappearance make the contamination particle can't be charged, can't be adsorbed on the pole plate, cause purifying rate sharply to descend, even entirely ineffective.For this reason, people once designed the method and the mechanism of various cleaning pole plates, but effect is little, and what have causes secondary pollution, and what have has introduced new pollution especially, and what have then causes the pole plate distortion and damage, and causes equipment normally not move, even scraps.

The utility model content:

Technical problem to be solved in the utility model is: solve the three big problems that existing electrostatic depuration method exists, 1. the volume of equipment and floor space are quite big, arrive the condition that some unit does not have use greatly; 2. electric-field intensity and purifying rate sharply descend, and very short time promptly lost efficacy most; 3. still do not have good way to clean pole plate at present,, can not work though cause a lot of equipment on the operating position.The problems referred to above reason is a lot, is adsorbed on the electrode by electrostatic field but main cause is a contamination particle.The purpose of this utility model is intended to not rely on the suction-operated of electrode, and the problems referred to above fundamentally are resolved: 1. be not subjected to the influence of electric field migration velocity, dust-contained airflow speed can improve, and the volume of equipment and floor space can reduce naturally; 2. do not adsorb grit on the electrode basically, the purifying rate of fundamentally having stopped to occur because of electrode fouling descends and lost efficacy; 3. do not need frequent cleaning, and clean easily, therefore can keep high purifying rate for a long time, the purifying rate of equipment is reached more than 99%.

The technical solution adopted in the utility model is: the cleaning equipment of this flue dust, dust, its architectural feature is: housing is provided with gas stream of pollution inlet and clean air outlet and drop or particle flux inlet and precipitum outlet, on above-mentioned gas stream of pollution and drop or particle flux path or the porch be respectively equipped with opposite polarity corona field, each corona field all has corona electrode and non-corona electrode, and they all connect high-voltage DC power supply.

In the technique scheme, when contamination particle and drop or particle flux particle process corona field, opposite polarity electric charge on the difference lotus, then, the two attracts each other, collides, contamination particle is adsorbed on drop or the particle flux particle and sedimentation thereupon, and clean air is separated from contaminated air and is discharged from; Handle through general, contamination particle and drop or particle flux separate particles, drop or particle flux particle enter and recycle.

In the technique scheme, the corona field that described direction is opposite, can two places or many places discrete, also can merge into a place.When being combined into a place, the different parts of using electrode is as corona electrode.

In above-mentioned flue dust, the dust purification device, opposite polarity corona field comprises just dizzy electric field and negative dizzy electric field.

In above-mentioned flue dust, the dust purification device, the electrode of the corona field that both direction is opposite can connect same high-voltage DC power supply, also can be connected in different high-voltage DC power supplies.

When corona electrode was negative high voltage, gas generation ionization in the air produced a large amount of anions, and these anions constantly clash into contamination particle on effect of electric field, make negative electrical charge on its lotus; Otherwise, when corona electrode is positive high voltage, positive charge on the contamination particle lotus.Equally, can be by corona electrode by drop or particle flux charge positive charge or negative electrical charge.Thereby, can make the positive opposite electric charge of elecrtonegativity on drop or particle flux and the contamination particle lotus by this method, and make it adsorb the back sinking mutually, clean air is separated from gas stream of pollution, reaches the purpose of purification.

The utlity model has following advantage and effect.

1, owing to do not rely on the absorption of pole plate in the electrostatic field, so be not subjected to the influence of electric field migration velocity, dust-contained airflow speed can improve, and the volume of equipment can reduce, should be wider, reduce cost cost saving;

2, contamination particle is to be adsorbed in drop or particle flux particle and sedimentation thereupon, and contamination particle can separate by simple method with drop or particle flux particle, the consequence that the purifying rate of fundamentally having stopped to cause because of electrode fouling sharply descends and lost efficacy, thus the problem that present much smoke purifying equipments of units perform practically no function solved.

3, equipment of the present utility model can be widely used in the environmental pollution improvement in industrial production such as boiler, kiln, cooking apparatus, drying plant, cement plant, chemical plant and the people's daily life.

4, the utility model novel, reasonable in design, simple in structure, implement easily, principle science, technical performance advanced person.

Description of drawings:

Fig. 1 is the utility model principle schematic

Fig. 2 is the utility model principle schematic example

Fig. 3 is the utility model embodiment 1 schematic diagram

Fig. 4 is the utility model embodiment 2 schematic diagrames

The specific embodiment:

The accompanying drawing marking explanation

1, housing

2, cleaned air outlet

3, woven hose

4, nozzle

5, contaminated air inlet

6, collecting tank

7, electrode

8, drop or particle flux inlet

9, precipitum outlet

Referring to Fig. 1, Fig. 2, the utility model for to the housing 1 of equipment or system in, introduce spray droplet or diameter greatly, be easy to charged, as to be easy to sedimentation or separation particle flux.Then can if use solid particle, then establish inlet in addition and introduce as if adopting spray droplet by woven hose 3 and nozzle 4 ejections as particle flux.On the path of gas stream of pollution and drop or particle flux or the porch opposite polarity corona field is set respectively, two opposite polarity corona fields can be combined into a place and set up, and also can be divided into two places or many places are set up at different parts.Fig. 1 sets up for two opposite corona fields of direction are combined into a place; Fig. 2 then is that two corona fields divide two different positions to set up, and one is the top in equipment, and another is built up in the porch of flue dust and dust.When flue dust, dust granules and drop or particle flux process corona field, the opposite electric charge of positive-negative polarity on the lotus makes them attract each other, collide then respectively, and contamination particle is adsorbed on drop or the particle flux and sedimentation thereupon, and the clean air after purifying is separated from contaminated air and is discharged from

Referring to Fig. 3, contaminated air enters housing 1 from contaminated air inlet 5 under the effect of blower fan, and by woven hose 3, nozzle 4 sprays in housing 1 liquid under the effect of pump.In the process that they enter, opposite polarity electric charge on the lotus in corona field respectively, then, attract each other, collide, contamination particle is adsorbed in drop and is sunken in the collecting tank 6 up and down or the bottom, and cleaned air is separated from contaminated air, discharges from cleaned air outlet 2 by blower fan.Meanwhile, the contaminated liquid in the collecting tank 6 is carried liquid to woven hose 3 and nozzle 4 by filtering the back circularly by pump; If with other solid particle particle fluxes, then after otherwise processed, recycle.

What more than say is the course of work of embodiment Fig. 3, and the difference of Fig. 4 and Fig. 3 is that the electric charge field of dust-contained airflow is located at air-polluting inlet 5 places, and the electric charge field of drop is located at housing top, and corona field is fitted together unlike Fig. 3.But principle is one, and contamination particle also is the opposite electric charge of positive-negative polarity on the difference lotus with drop, attracts each other then, and contamination particle is adsorbed in drop and is sunken in the collecting tank 6 up and down or bottoms.

Can also see by Fig. 3, Fig. 4, make the charged electrode of dirt stream with make the charged electrode of drop can attach together in, also can separate from two places or many places.Corona electrode and non-corona electrode can be formed on the same electrode, and the part that just produces corona must be the minimum part of radius of curvature, certainly, can also separately make.Should be formed on the same electrode actually, still separately, obviously fixed according to designing arrangement.Above-mentioned non-corona electrode is meant the electrode with the corresponding installation of corona electrode, also claims collecting electrode in the prior art.

Claims

1. the cleaning equipment of a flue dust, dust, it is characterized in that: housing is provided with gas stream of pollution inlet and clean air outlet and drop or particle flux inlet and precipitum outlet, on above-mentioned gas stream of pollution and drop or particle flux path or the porch opposite polarity corona field is housed respectively, each corona field all has corona electrode and non-corona electrode, and they all connect high-voltage DC power supply.

2. the cleaning equipment of flue dust according to claim 1, dust is characterized in that the corona field that described direction is opposite, can two places or many places discrete, also can merge into a place.

3. the cleaning equipment of flue dust according to claim 1, dust is characterized in that the opposite corona field of both direction can be connected in same high-voltage DC power supply, can also be connected in different high-voltage DC power supplies.

4. the cleaning equipment of flue dust according to claim 1, dust is characterized in that opposite polarity corona field comprises just dizzy electric field and negative dizzy electric field.