CN1020415C

CN1020415C - Boiler flue-gas treater and treating method thereof

Info

Publication number: CN1020415C
Application number: CN 89108829
Authority: CN
Inventors: 李耀庭
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-11-29
Filing date: 1989-11-29
Publication date: 1993-05-05
Anticipated expiration: 2004-11-29
Also published as: CN1044598A

Abstract

The present invention relates to a smoke processing device for boilers, which is composed of a pressure reducing cover, a fog-shaped catching room and a sealing box body; the pressure reducing cover is provided with a smoke inlet and an access hole; the fog-shaped catching room is provided with the devices of a high-pressure water pipe, a water dividing conduit, a jet hole, etc. and a plurality of small pipes are arranged in the sealing box body. The purpose of eliminating powder dust and cleaning sulfur dioxide and nitrous oxides in smoke is achieved through the sufficient contact of water and smoke. The present invention has the advantages of simple structure, easy fabrication, low cost, small occupation of land, high efficiency and long service life.

Description

Boiler flue-gas treater and treating method thereof

The present invention relates to a kind of boiler soot processor.It belongs to environment protection equipment.

At present, the smoke dust-removing equipment efficient of using is low both at home and abroad, can not remove sulfur dioxide contained in the flue dust, sulfur trioxide, oxynitrides and hydrocarbon etc., thereby cause temperature of the earth rising, pernicious gas to spread unchecked acid rain serious environment pollution, deforestation farmland and plant; Harm humans health, tuberculosis, tracheitis and cancer morbidity straight line rise.

Purpose of the present invention is exactly that a kind of high boiler soot processor of sulfur dioxide, carbon dioxide and efficiency of dust collection and processing method thereof removed will be provided.

The present invention is achieved in that boiler soot processor is made up of decompression cover 2, vaporific trap chamber 4 and seal case 9; Decompression cover 2 is umbrella, is positioned at the top of smoke treatment device, and flue dust inlet 1 is established at its top, divides into hand-hole 3; Vaporific trap chamber 4 is positioned under the decompression cover 2, and high-pressure water pipe 5 is located at vaporific trap chamber 4 one sides, and opposite side corresponding with it has to clean is responsible for 11, and being in charge of of high-pressure water pipe 5 traversed in the vaporific trap chamber 4, and being in charge of has many hole for water sprayings; Seal case 9 is communicated with vaporific trap chamber 4, and porous flat plate 11 is established at the top of seal case 9, and its every Kong Douyu one tubule 6 connects.Tubule 6 is a vertical configuration, and a segment distance is arranged at the bottom of end opening and the seal box, about 50 millimeters; The gas of seal case 9 is discharged from exhaust outlet 8, and the water of bottom is then discharged by overflow pipe 10.High-pressure water pipe 5 is " volume " word arrangement with being in charge of, and the hole for water spraying of being in charge of is equidistantly arranged.Hole for water spraying on the subtube can not be too small, and the best is 2 millimeters of φ.

Boiler smoke processing method of the present invention is to adopt wet method, and vaporific seizure, membrane type are caught for it and the foam seizure is grouped together; Flue dust is resolved into some little airflows, water is fully contacted with flue dust, remove dust down, and make dust soluble in water in a large number; In dust water, add the magnesia breeze, formed sulfuric acid, sulfurous acid and carbonic acid such as sulfur dioxide in the water, carbon dioxide and magnesium are reacted, form new inorganic salts, magnesium sulfate and magnesium carbonate; The sewage that adds behind the magnesium is reused through handling again.

Advantage of the present invention:

1. simple in structure, easy to manufacture, small investment, occupation of land less, long service life;

2. the sulfur dioxide clearance rate is 75～85% in the flue dust;

3. nitrogen oxide (mainly being carbon dioxide) reaches more than 50% in the removing flue dust;

4. dust removal efficiency reaches more than 97～98%;

Below in conjunction with accompanying drawing the present invention is elaborated:

Fig. 1 is the vertical figure that partly cuts open of boiler soot processor.

Fig. 2 is that the boiler soot processor horizontal stroke partly cuts open figure.

Fig. 3 is porous flat plate 11 figure.

Fig. 4 is tubule 6 shape figure.

With reference to Fig. 1, by special-purpose water pump water under high pressure is pressed into trunk line, be in the high-pressure water pipe 5, current advance subtube, then by the hole for water spraying on the subtube, be ejected into water column in the container thick and fast, form the cascade of thick water column, when producing collision between water column and the water column and between water column and the chamber wall, just form a lot of tiny water smokes, the globule, among boiler smoke enters decompression cover 2 from flue dust inlet 1 at this moment, drop in the vaporific trap chamber 4, once more contact takes place in He Shui and mist during by cascade, the mixture of water smoke and flue dust is by the many tubules 6 in the seal case 9 then, the thick air-flow that these tubules 6 will enter decompression cover 2 resolves into several very thin air-flows, because the water yield is bigger, the inwall of tubule 6 forms water membrane naturally, when flue dust contacts with the tubule wall with the mixture of water and mist, just gluing near the dirt in the mist of tubule 6 inwalls, and make sulfur dioxide in the flue dust, pernicious gases such as carbon dioxide are adsorbed onto in the water, these moisture films are constantly being worked owing to the continuous water supply of water pump is brought in constant renewal in.When the mixture of water, mist and flue dust continues to advance in tubule 6, because the frictional resistance between the mixture in tubule 6 inwalls and the motion, make behind the close air-flow of tubule 6 inwalls in the air-flow of tube hub.When mixture is advanced like this, be broken down into thin slice in long tubule 6, just can contact with water to greatest extent, the seizure dust is provided to greatest extent, absorb the sulfur dioxide in the gas, the chance of carbon dioxide.The mixture movement of water and flue dust is to the outlet of tubule 6, because of container bottom is being controlled certain water surface elevation, the end opening of tubule 6 is inserted in the water, when seal case 9 produces negative pressure owing to fan action, the flue dust mixture is just by the control water surface of the bottom half water surface of emerging, at this time, produce a large amount of bubbles, this just washs flue dust again.In dust water, add the magnesia breeze, make formed sulfuric acid, sulfurous acid and carbonic acid such as sulfur dioxide in the water, carbon dioxide and magnesium react formation new inorganic salts, magnesium sulfate and magnesium carbonate; The sewage that adds behind the magnesium is reused through handling again.Because the gas motion between the outlet of tubule 6 and the container bottom between very little, the air water of distance makes the water generates fluidized state of bottom half, thereby container bottom just can not produce the flue dust deposited phenomenon, just need not to be provided with end device clearly yet.

Claims

1, a kind of boiler soot processor is characterized in that it is made up of decompression cover 2, vaporific trap chamber 4 and seal case 9:

(1) decompression cover 2 is umbrella, is positioned at the top of smoke treatment device, and flue dust inlet 1 is established at its top, divides into hand-hole 3;

(2) vaporific trap chamber 4 is positioned under the decompression cover 2, and high-pressure water pipe 5 is located at vaporific trap chamber 4 one sides, and opposite side corresponding with it has to clean is responsible for 11, and being in charge of of high-pressure water pipe 5 traversed in the vaporific trap chamber 4, and being in charge of has many hole for water sprayings;

(3) seal case 9 is communicated with vaporific trap chamber 4, and porous flat plate 11 is established at the top of seal case 9, and its every Kong Douyu one tubule 6 connects, and tubule 6 is a vertical configuration, and a segment distance is arranged at the bottom of end opening and the seal box;

(4) gas of seal case 9 is discharged from exhaust outlet 8, and the water of bottom is then discharged by overflow pipe 10.

2, boiler soot processor as claimed in claim 1 is characterized in that high-pressure water pipe 5 and is in charge of being " volume " word arrangement, and the hole for water spraying of being in charge of is equidistantly arranged.

3, boiler soot processor as claimed in claim 1 is characterized in that the hole for water spraying on the subtube can not be too small, and the best is 2 millimeters of Φ.

4, a kind of boiler smoke processing method is characterized in that adopting wet method:

(1) vaporific seizure, membrane type seizure and foam seizure are grouped together;

(2) flue dust is resolved into some little airflows, water is fully contacted with flue dust, remove dust down, and make dust soluble in water in a large number;

(3) in dust water, add the magnesia breeze, make formed sulfuric acid, sulfurous acid and carbonic acid such as sulfur dioxide in the water, carbon dioxide and magnesium react formation new inorganic salts, magnesium sulfate and magnesium carbonate;

(4) sewage that adds behind the magnesium is reused through handling again.