CN108295585A

CN108295585A - Coal-burning boiler flue dust stirs clarifier

Info

Publication number: CN108295585A
Application number: CN201710024285.6A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-01-13
Filing date: 2017-01-13
Publication date: 2018-07-20

Abstract

A kind of coal-burning boiler flue dust stirring clarifier, is made of air pump, purifying vessel, gas-guide tube, aqueous solution, motor, stirring blade.For the fume gases that air pump generates coal-burning boiler through gas-guide tube, positive pressure imports purifying vessel bottom, then through the countless needlepoint type micropores on gas-guide tube, becomes countless tiny bubbles, into clarifier aqueous solution.Stirring motor high speed rotation, further bubble crushing make gas come into full contact with, mix with aqueous solution, absorb smokeshade；So that the calcium carbonate reaction in the sulfur dioxide and aqueous solution in flue dust is generated calcium sulfite and calcium sulfate (gypsum), be deposited to purifying vessel bottom, to reach the purpose of purification flue dust.It, can first dedusting, then the precipitated silica sulphur in another container in a vessel to obtain pure gypsum.The solvent and deep matter, the system replaced in purifying vessel can be used for the purification and recycling of other toxic and harmful gas.The method does not generate fog, and no unloading water reduces primary pollution up to 95 or more, polluted without second.Water and electric saving, it is easy to be cheap.

Description

Coal-burning boiler flue dust stirs clarifier

Technical field

The present invention relates to a kind of cleaning equipments carrying out cleaning treatment to coal-burning boiler flue dust, are mainly used for various coal-fired pots The dedusting of stove flue dust, desulfurization process, cut-out primary air pollution, prevent secondary pollution.

Background technology

Coal-burning boiler be widely used in steel-making, power generation, heating etc. industry and civilian projects, burning after discharge flue dust, Sulfur dioxide (SO2) etc., just serious dirty air, forms the haze of slight-severe, seriously destroys natural environment, significantly affects people Body health.

Used coal-burning boiler smoke treatment device is all to use water mist (film) dedusting on the market at present, is deposited great both ways Problem.On the one hand it is that operating cost is high, power consumption, water consumption, sewage is discharged always and generates secondarily polluted water.On the other hand it is processing Device discharges a large amount of fog particle, not recovered sulfate after untreated and desulfurization is carried, into low latitude, it is difficult to expand It dissipates.Droplet, which provides, reacts miniature device, and then photochemical reaction occurs with vehicle exhaust etc., generates new pollutant ----secondary sky Gas pollutes.Especially northern, winter drying, if inartificial fog, pollutant can rapidly be spread to high-altitude, not seen, Influence to ground is also little.Here it is over the years, government continually strengthens enterprise's emission reduction, and the original that haze is increasingly severe Cause.This is not that this several years discharge capacity significantly increases, but caused by bad atomization emission-reduction technology.Foreign countries are similar to be set Standby to carry out heat treatment (80-90 degree) to fog, with the fog that dissipates, but the country lacks this link.

Invention content

The purpose of the present invention is carrying out non-atomized purified treatment to the flue dust of coal-burning boiler, substantially reduce smokeshade and its Primary pollution and secondary pollution of the interior compound to air.

The technical solution adopted by the present invention to solve the technical problems is：With air pump fire coal boiler fume through gas-guide tube Purifying vessel is inputted, calcium carbonate aqueous solution is housed in container.Gas-guide tube is coiled in container bottom, and dense distribution countless on pipeline Needlepoint type aperture, flue gas enters through aperture in aqueous solution, is dispersed into countless minute bubbles.Blender is stretched into above container, it is high Speed rotation makes to enter the minute bubbles in water and is further crushed dispersion, come into full contact with water, mixes, removes smokeshade.Meanwhile Calcium carbonate reacts with the sulfur dioxide in flue dust in water, generates calcium sulfite and calcium sulfate, deposits to container bottom.It is this Method abbreviation bubble agitation method.

The beneficial effects of the invention are as follows：Fume gases are resolved into small bubble, are contacted with water, allow flue dust humidifying, are melted Enter in water, reaches dedusting purpose.When high-speed stirred rotates, not only further bubble crushing, but also increase microbubble and water It contact surface and time of contact, realizes coming into full contact with, mixing for flue gas and water, removes smokeshade and wherein harmful gas well Body.The equipment cost is low, simple to install, economizes on electricity, is water-saving, being discharged without fog, without sewage discharge, to block auxiliary air Pollution reaction, without secondarily polluted water.Wherein, the pump gas amount of air pump is adjustable, and the abundant burning with boiler is adapted.Motor Rotating speed is adjustable, with the flue gas discharge that is invisible to the naked eye for target.The alterable height of solution coordinates, it is ensured that fully remove cigarette with motor Dirt.In short, 95% or more purification efficiency may be implemented in the technology.

Description of the drawings

Present invention will be further explained below with reference to the attached drawings and examples.

Fig. 1 is the structural model figure of the present invention.1. boiler in figure, 2. air pumps, 3. motors, 4. purifying vessels, 5. is water-soluble Liquid, 6. stirring blades, 7. gas-guide tube micropores, 8. gas-guide tubes.

Specific implementation mode

Fig. 1 is coal-burning boiler flue dust stirring clarifier ideograph, the fume gases that the coal that burns in boiler (1) generates, through leading Tracheae (8) enters air pump (2).Fume gases positive pressure is imported purifying vessel (4) by air pump.Aqueous solution is housed in purifying vessel (5), wherein containing calcium carbonate.After gas-guide tube (8) enters purifying vessel (4), coils in bottom, there are countless needlepoint type air guides thereon Pipe micropore (7).Gas through micropore dispersion at countless minute bubbles, into aqueous solution (5).Motor (3) drives stirring blade (6) high Speed rotation, further bubble crushing, and rotated with bubble, it comes into full contact with, mix with aqueous solution (5), smokeshade is made to incorporate In water, make sulfur dioxide therein and calcium carbonate reaction in aqueous solution, generates calcium sulfite and calcium sulfate, deposit to purifying vessel Bottom.Clean air is discharged into above purifying vessel (4) in air.The deposit of bottom is periodically removed, and can be used as gypsum It uses.

If it is desired to obtaining pure gypsum, dedusting and deposition sulfur dioxide can be separated, first in a purifying vessel Smoke abatement, then deposit sulfur dioxide in next container and generate gypsum, in order to avoid flue dust impurity is mixed into gypsum.

If replacing the solvent and solute in purifying vessel, this bubble agitation method is adaptable to other toxic and harmful gas Purification and recycling.

Claims

1. a kind of coal-burning boiler flue dust stirs clarifier, by air pump, purifying vessel, gas-guide tube, aqueous solution, motor, paddle Piece is constituted.

2. coal-burning boiler flue dust stirs clarifier according to claim 1, with air pump by coal-burning boiler fume gases positive pressure It imports in purifying vessel, the pump gas amount of air pump is adjustable.

3. coal-burning boiler flue dust stirs clarifier according to claim 1, aqueous stock solution in purifying vessel, contain in aqueous solution There is calcium carbonate, reacted with the sulfur dioxide in flue dust, generates calcium sulfite and calcium sulfate precipitation (gypsum).

4. coal-burning boiler flue dust stirs clarifier according to claim 1, purifying vessel bottom plate is wound with gas-guide tube, gas-guide tube On needlepoint type micropore is distributed with.

5. coal-burning boiler flue dust stirs clarifier according to claim 1, motor drives stirring blade high speed rotation, further Bubble crushing makes water be come into full contact with gas, mixes, reacts, and removes smokeshade and sulfur dioxide.

6. aqueous solution according to claim 3 can replace solvent and deep matter, be used for the purification of other toxic and harmful gas And recycling.

7. coal-burning boiler flue dust stirs the aqueous solution described in clarifier and claim 3 according to claim 1, can first exist Flue dust is removed with water in one purifying vessel, then with calcium carbonate aqueous solution work precipitated silica in next same purifying vessel Sulphur generates pure gypsum.