CN102949920A

CN102949920A - Waste incineration tail gas emission purification treatment process and special apparatus thereof

Info

Publication number: CN102949920A
Application number: CN2012104238467A
Authority: CN
Inventors: 钟伏桥
Original assignee: 湘潭闯创环保科技有限公司
Priority date: 2012-10-30
Filing date: 2012-10-30
Publication date: 2013-03-06

Abstract

The invention relates to a waste incineration tail gas emission purification treatment process and a special apparatus thereof, wherein technical problems of difficult treatments on dioxin and heavy metals by the existing tail gas treatment apparatus and the like are mainly solved with the process and the special apparatus. Key points of the technical scheme comprise that: a fan (2) is arranged on a flue channel (3), one end of the flue channel (3) is communicated with a flue emission port of an incineration furnace (1), the other end of the flue channel (3) respectively forms a series connection with a processor (5) and a filter (6), and a flue emission channel (7) is arranged on the filter (6). According to the present invention, tail gas generated by incineration is subjected to five processes such as precipitation dust removing, desulfurization dechlorination, pharmaceutical agent treatment, adsorption purification and high temperature burn back so as to reduce tail gas harmful substance emission, particularly effectively control emissions of highly toxic gas dioxin, decompose heavy metals in tail gas precipitate, and effectively solve the problem of pollution on air and soil by tail gas after incineration.

Description

A kind of purification process technique and special equipment of garbage incinerating tail gas discharging

Technical field

The present invention relates to a kind of purification process technique and special equipment of garbage incinerating tail gas discharging.

Background technology

At present, generally be it to be carried out incendivity partly being sent into incinerator after go-on-go, the screening burn to the burning of house refuse traditionally, its tail gas directly discharges in air by chimney.Because the temperature in burning process in the incinerator only has about 500 degree, and tail gas is without any processing, therefore produce the pernicious gas such as a large amount of De bioxin in the tail gas and directly discharge in air, major polluting atmosphere environment causes significant damage to human body and animals and plants.The a large amount of harmful substances such as heavy metal that contain in the flue dust also not through any processing, cause considerable damage to soil environment.

Summary of the invention

The purpose of this invention is to provide a kind of processing speed is fast, treatment effeciency is high, the garbage incinerating tail gas of energy-conserving and environment-protective discharges purification process technique and special equipment.

The technical solution adopted for the present invention to solve the technical problems is: the tail gas that burn to produce takes off dirt, desulfurization dechlorination, chemicals treatment, adsorption cleaning, high temperature through precipitation and flashes back and discharge behind the five processes; At first, make flue gas send into sealed water tank by heat-resisting air pump, evoke ripples and fog circulation rotating, thereby enter spray column through tank top perlite chad layer after making flue gas take off dirt, dust then is deposited in water tank bottom, then, tail gas enters spray column, under the effect of alkaline emulsion Alevaire spray, decompose sulphur dioxide and hydrogen chloride and sour gas, control bioxin formation condition, again, make tail gas enter processor and disinfect through the confection stirring, cracked ammonium, nitrogen, hydrogen, chlorine and cadmium, lead, mercury He the harmful substances such as bioxin, and clear up blackness of exhaustion; Adsorbent absorption and cleaning of off-gas in the tail gas adsorption tower; At last, tail gas enters the circulation of burner hearth secondary high-temperature through the pipe that flashes back and flashes back, circulation roasting discharging after the process quenching processing more than 2 seconds in the burner hearth of high temperature more than 1000 ℃.Adsorbent in adsorption tower comprises charcoal, bamboo charcoal and active carbon, and mixes by following weight ratio: charcoal 30-40 part, bamboo charcoal 30-40 part, active carbon 25-35 part.The charcoal, bamboo charcoal and the active carbon preferred weight proportioning that consist of adsorbent are as follows: 35 parts in charcoal, 35 parts of bamboo charcoals, 30 parts of active carbons.

Described confection comprises lime, alum, yellow acid, 6501 doses, and mixes by following weight ratio: 2 parts in lime, 0.2 part of alum, 0.15 part, 6501 doses 0.15 part of yellow acid.Lime in the described confection, alum, yellow acid, 6501 doses preferred weight proportioning are as follows: 2 parts in lime, 0.2 part of alum, 0.15 part, 6501 doses 0.15 part of yellow acid.

The purified treatment special equipment of garbage incinerating tail gas discharging of the present invention is at flue 3 blower fan 2 to be installed, flue 3 one ends communicate with the exhaust opening of incinerator 1, the other end of flue 3 is in series with processor 5 and filter 6 respectively, and smokejack 7 is set on the filter 6.Described processor 5 is seal case, is provided with box partition in the casing, and box partition is loaded with water in the bottom of casing, is filled with perlite chad layer on the box partition, is provided with spray equipment on perlite chad layer top.Described filter 6 is tower structure, and is filled with sorbing material in tower.Flue 3 between blower fan 2 and processor 5 arranges heat energy room 4.

The invention has the beneficial effects as follows: it can take off dirt, desulfurization dechlorination, chemicals treatment, adsorption cleaning, the high temperature five processes such as flash back through precipitation to the tail gas that burn to produce and reduce the generation of tail gas harmful substance, particularly can effectively control bioxin severe toxicity gas purging, and the heavy metal in the energy decomposed tail gas sediment, effectively solved the pollution problem of tail gas after incineration to air and soil.

Description of drawings

Fig. 1 is structural representation of the present invention.

Among the figure: 1-incinerator, 2-blower fan, 3-flue, 4-heat energy room, 5-processor, 6-filter, 7-smokejack.

The specific embodiment

Below in conjunction with drawings and Examples the present invention is described in further details.

Embodiment 1, at first, make flue gas send into sealed water tank by heat-resisting air pump, evoke ripples and fog circulation rotating, thereby enter spray column through tank top perlite chad layer after making flue gas take off dirt, dust then is deposited in water tank bottom, thereafter, tail gas enters spray column, under the effect of alkaline emulsion Alevaire spray, decompose sulphur dioxide and hydrogen chloride and sour gas, control bioxin formation condition.Then, making tail gas enter processor disinfects through the confection stirring, described confection comprises lime, alum, yellow acid, 6501 doses, and mix by following weight ratio: 2 parts in lime, 0.2 part of alum, 0.15 part of yellow acid, 6501 doses 0.15 part, preferred weight proportion is as follows: 2 parts in lime, 0.2 part of alum, 0.15 part of yellow acid, 6501 doses 0.15 part, described 6501 refer to cocoanut fatty acid diethanolamide, also can be described as N.N-double hydroxyethyl alkylamide, or lauric acid amide of ethanol, or coconut oil diethanol amide, or alkylolamides, proterties is faint yellow to amber thick liquid, soluble in water, has good foaming, steady bubble, the infiltration decontamination, the functions such as anti-hard water, belong to non-ionic surface active agent, the compatibility thickening effect is obvious especially with it when anion surfactant is acidity, can with kinds of surface activating agent compatibility.Can strengthen cleaning effect, can be used as additive, foam stabilization agent, foaming aids, be mainly used in the manufacturing of shampoo and liquid detergent.In water, form a kind of opaque vaporific solution, can be fully transparent under certain stirring, under finite concentration, can be dissolved in fully in different types of surfactant, in low-carbon (LC) and high-carbon, also can dissolve fully.It is cracked ammonium, nitrogen, hydrogen, chlorine and cadmium, lead, mercury He the harmful substances such as bioxin effectively, and clear up blackness of exhaustion.In adsorption tower, load adsorbent, described adsorbent comprises charcoal, bamboo charcoal and active carbon, and mix by following weight ratio: charcoal 30-40 part, bamboo charcoal 30-40 part, active carbon 25-35 part, the preferred weight proportioning is as follows: 35 parts in charcoal, 35 parts of bamboo charcoals, 30 parts of active carbons; Adsorbent in the tail gas adsorption tower reaches more than the discharge standard tail gas clean-up.At last, tail gas enters the circulation of burner hearth secondary high-temperature through the pipe that flashes back and flashes back, and then the circulation roasting was processed through quenching more than 2 seconds in the burner hearth of high temperature more than 1000 ℃, thoroughly eliminated the pernicious gases such as bioxin.

Embodiment 2, and blower fan 2 is installed on the flue 3 of the present invention, and flue 3 one ends communicate with the exhaust opening of incinerator 1, and the other end of flue 3 is in series with processor 5 and filter 6 respectively, and smokejack 7 is set on the filter 6.Consult Fig. 1, all the other are with embodiment 1.

Embodiment 3, and processor 5 of the present invention is designed to seal case, and is provided with box partition in casing, and box partition is loaded with water in the bottom of casing, are filled with perlite chad layer on the box partition, are provided with spray equipment on perlite chad layer top.

Embodiment 4, and filter 6 of the present invention is tower structure, and is filled with sorbing material in tower.Consult Fig. 1, all the other are with above-mentioned embodiment.

Embodiment 5, and the flue 3 of the present invention between blower fan 2 and processor 5 arranges heat energy room 4, mainly are to take full advantage of heat energy in the flue 3 by the heat energy room, and make flue gas cool-down.Consult Fig. 1, all the other are with above-mentioned embodiment.

Claims

1. the purification process technique of garbage incinerating tail gas discharging is characterized in that: burn the tail gas that produces and take off dirt, desulfurization dechlorination, chemicals treatment, adsorption cleaning, high temperature through precipitation and flash back and discharge behind the five processes; At first, make flue gas send into sealed water tank by heat-resisting air pump, evoke ripples and fog circulation rotating, thereby enter spray column through tank top perlite chad layer after making flue gas take off dirt, dust then is deposited in water tank bottom, then, tail gas enters spray column, under the effect of alkaline emulsion Alevaire spray, decompose sulphur dioxide and hydrogen chloride and sour gas, control bioxin formation condition, again, make tail gas enter processor and disinfect through the confection stirring, cracked ammonium, nitrogen, hydrogen, chlorine and cadmium, lead, mercury He the harmful substances such as bioxin, and clear up blackness of exhaustion; Adsorbent absorption and cleaning of off-gas in the tail gas adsorption tower; At last, tail gas enters the circulation of burner hearth secondary high-temperature through the pipe that flashes back and flashes back, circulation roasting discharging after the process quenching processing more than 2 seconds in the burner hearth of high temperature more than 1000 ℃.

2. the purification process technique of described garbage incinerating tail gas discharging according to claim 1, it is characterized in that: the adsorbent in adsorption tower comprises charcoal, bamboo charcoal and active carbon, and mixes by following weight ratio: charcoal 30-40 part, bamboo charcoal 30-40 part, active carbon 25-35 part.

3. the purification process technique of described garbage incinerating tail gas discharging according to claim 2, it is characterized in that: the charcoal, bamboo charcoal and the active carbon that consist of adsorbent mix by following weight ratio: 35 parts in charcoal, 35 parts of bamboo charcoals, 30 parts of active carbons.

4. the purification process technique of described garbage incinerating tail gas discharging according to claim 1, it is characterized in that: described confection comprises lime, alum, yellow acid, 6501 doses, and mixes by following weight ratio: 2 parts in lime, 0.2 part of alum, 0.15 part, 6501 doses 0.15 part of yellow acid.

5. the purification process technique of described garbage incinerating tail gas discharging according to claim 4 is characterized in that: the lime in the described confection, alum, yellow acid, 6501 doses mix by following weight ratio: 2 parts in lime, 0.2 part of alum, 0.15 part, 6501 doses 0.15 part of yellow acid.

6. the purified treatment special equipment of garbage incinerating tail gas discharging, it is characterized in that: the upper blower fan (2) of installing of flue (3), flue (3) one ends communicate with the exhaust opening of incinerator (1), the other end of flue (3) is in series with processor (5) and filter (6) respectively, and smokejack (7) is set on the filter (6).

7. the purified treatment special equipment of described garbage incinerating tail gas discharging according to claim 6, it is characterized in that: described processor (5) is seal case, be provided with box partition in the casing, box partition is loaded with water in the bottom of casing, be filled with perlite chad layer on the box partition, be provided with spray equipment on perlite chad layer top.

8. the purified treatment special equipment of described garbage incinerating tail gas discharging according to claim 6, it is characterized in that: described filter (6) is tower structure, and is filled with sorbing material in tower.

9. the purified treatment special equipment of described garbage incinerating tail gas discharging according to claim 6, it is characterized in that: the flue (3) between blower fan (2) and processor (5) arranges heat energy room (4).