CN202740997U - Complete device for processing sludge incineration tail gas by using wet method - Google Patents
Complete device for processing sludge incineration tail gas by using wet method Download PDFInfo
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- CN202740997U CN202740997U CN201220471140.3U CN201220471140U CN202740997U CN 202740997 U CN202740997 U CN 202740997U CN 201220471140 U CN201220471140 U CN 201220471140U CN 202740997 U CN202740997 U CN 202740997U
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Abstract
The utility model relates to a complete device for processing sludge incineration tail gas by using a wet method. The complete device comprises a dry type static deduster, a fume reheater, a cloth bag deduster and a fume washing tower, wherein one end of the dry type static deduster is connected with a sludge incineration tail gas pipeline; the other end of the dry type static deduster is connected with the fume reheater through a pipeline; the part close to the bottom end on the right side wall of the fume reheater is connected with the cloth bag deduster through a pipeline; the top part of the cloth bag deduster is connected with a compressed air tank through another pipeline; the part close to the top end on the right side wall of the cloth bag deduster is connected with the fume washing tower through another pipeline; the part close to the top end on the right side wall of the fume washing tower is connected with the fume reheater through another pipeline; the part close to the top end on the right side wall of the fume reheater is connected with a draft fan through another pipeline; and an on-line monitoring system is arranged on the side wall of a chimney. By utilizing the complete device, the equipment domesticization is completely realized, and the automation and the intelligentization in sludge tail gas purification process control are realized.
Description
Technical field
The utility model belongs to solid waste treatment field, relates in particular to a kind of complexes of wet-treating sludge incineration tail gas.
Background technology
Along with the quickening of China's rapid development of economy and urbanization process, the sludge quantity that China city produces is also in quick increase.In the sludge treatment field, sludge anhydration burning is a kind of technology of present national environmental protection recommendation, and range of application is wider, is fit to process the municipal sludge of China's different qualities.But in the tail gas that the sludge incineration process produces, contain a large amount of pollutants, will certainly cause seriously harm to environment.For Pollutant emission concentration in the assurance tail gas reaches the discharging standards of increasingly stringent, must carry out purified treatment to tail gas.
At present, incineration tail gas process for purifying and the device category of sludge incineration treatment plant are a lot, generally are comprised of acid gas removal system, dust pelletizing system and charcoal absorption system three parts.The acid gas removal technology is the core of tail gas clean-up technology, and tail gas clean-up process system commonly used has three kinds of wet method, semidry method and dry method.Dry purification process equipment is simple, and engineering cost is minimum, but purification efficiency is relatively low, general SO
2Clearance only 30%, HCl only 50%; Semidry method tail gas treatment process purification efficiency is relatively high, and drug dosage is less; The wet method tail gas treatment process then has following advantage: pollutants removal rate is the highest, and flue gas cool-down is rapid, can satisfy strict pollutant emission standard.Therefore, in design, to preferentially select for reaching higher position reason effect.
Need in conjunction with present domestic mud market development, country is setting up and is improving relevant technology, the industrial policy of sludge incineration processing, formulates corresponding standard and laws and regulations in the sludge incineration processing procedure.But domestic sludge incineration tail gas treatment technology is relatively backward, treatment effeciency is low, difficulty up to standard, and China has gone into operation or the many auxiliary facilities as CIU of signatory mud tail gas clean-up device therefor from external import, expensive, and bad to the adaptability of domestic mud.
Therefore, develop one the cover treatment effeciency high, automaticity is high, price is low and the good wet-process tail gas treatment device of the adaptability of domestic mud is become the task of top priority.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of complexes of wet-treating sludge incineration tail gas, can be used as the auxiliary facility of sludge incinerating system, realize home-made equipment fully, realize simultaneously automation, the intellectuality of mud tail gas clean-up technology controlling and process, and by reducing input cost extra earning benefit.
The complexes of wet-treating sludge incineration tail gas of the present utility model, comprise dry electrostatic cleaner, smoke re-heater, sack cleaner and flue gas washing tower, one end of described dry electrostatic cleaner is connected with the sludge incineration tail gas pipeline, the other end of dry electrostatic cleaner connects smoke re-heater by pipeline, connect sack cleaner by positon of near bottom by pipeline on the smoke re-heater right side wall, the top of sack cleaner connects compressed air cylinder by pipeline, connect the flue gas washing tower near top end by pipeline on the sack cleaner right side wall, be connected with smoke re-heater by pipeline near top end on the flue gas washing tower right side wall, connect air-introduced machine near top end by pipeline on the smoke re-heater right side wall, air-introduced machine connects chimney by pipeline, and the sidewall of chimney is provided with on-line monitoring system.
The complexes of wet-treating sludge incineration tail gas of the present utility model, the inside of described dry electrostatic cleaner is provided with corona discharge electrode system and receiving electrode system, dry electrostatic cleaner is removed most of dust in the sludge incineration tail gas by corona discharge electrode system and receiving electrode system, then adopts impact endurance test shock to come dust on the stripping electrode.
The complexes of wet-treating sludge incineration tail gas of the present utility model, described dry electrostatic cleaner are connected the bottom and are all connected grey conveying worm by pipeline with smoke re-heater, grey conveying worm connects ash silo by pipeline.
The complexes of wet-treating sludge incineration tail gas of the present utility model, be connected active carbon warehouse and calcium hydroxide warehouse on the connecting pipe between described smoke re-heater and the sack cleaner, the active carbon warehouse is connected pipeline with the calcium hydroxide warehouse and connects respectively roots blower.
The complexes of wet-treating sludge incineration tail gas of the present utility model, the bottom of described sack cleaner connects grey conveying worm by pipeline, and grey conveying worm connects reject bin by pipeline.
The complexes of wet-treating sludge incineration tail gas of the present utility model, the inside of described sack cleaner is provided with bypass line, so that system's sustainable operation between fault/turn(a)round.
The complete method of wet-treating sludge incineration tail gas may further comprise the steps:
1) sludge incineration tail gas at first enters dry electrostatic cleaner, rely on inner corona discharge electrode system and the receiving electrode system that arranges of dry electrostatic cleaner to remove most of dust with the electrostatic depuration method, then adopt impact endurance test shock to come dust on the stripping electrode, dust removal efficiency can reach more than 99%, and the flying dust that dry electrostatic cleaner is collected is transported to ash silo by grey conveying worm;
2) tail gas enters smoke re-heater subsequently, and with the tail gas heat exchange of passing through after the flue gas washing tower is processed, the ash that smoke re-heater is collected is delivered to grey conveying worm as Ordinary solid waste, is transported to afterwards ash silo;
3) on the flue before entering sack cleaner, spray into active carbon and calcium hydroxide powder by roots blower respectively, then the sour gas in the cleaning of off-gas and other pollutant enter sack cleaner;
When 4) tail gas passed through the filter bag of sack cleaner, the dust in the tail gas was trapped within the filter bag outer surface, thereby is purified; Active carbon in the sack cleaner enters flue by conveying and dosing system again and recycles; Flying dust is collected by the dust collector ash hopper of sack cleaner bottom, and then by the grey conveying worm reject bin of packing into, outward transport is disposed as danger wastes;
5) flue gas after sack cleaner is processed enters in the flue gas washing tower, fully mix with the alkali liquor absorption agent of ejecting, and the sour gas in the flue gas and absorbent generation chemical reaction, thus removed;
6) lower through the flue-gas temperature after the washing of flue gas washing tower, generate for preventing misty rain, flue gas returns smoke re-heater, and the flue gas heat exchange after processing with the process dry electrostatic cleaner is warming up to about 110 ℃;
7) sidewall at chimney is arranged on line monitoring system, in real time flue gas is detected, so that the adjusting process parameter guarantees that flue gas is up to standard; Drawn by air-introduced machine through the flue gas up to standard that purifies, enter the chimney high altitude discharge.
The complete method of wet-treating sludge incineration tail gas, the inside of described sack cleaner is provided with bypass line, so that system's sustainable operation between fault/turn(a)round.
Compared with prior art the beneficial effects of the utility model are:
1) good dedusting effect is provided with dry electrostatic cleaner in the system, its efficiency of dust collection is more than 99%; In addition, dry electrostatic cleaner deashing employing impact shock comes the dust on the stripping electrode, the flying dust (identifying through national authority mechanism) that guarantees the electrostatic precipitator generation is disposed as Ordinary solid waste, to avoid producing the expensive treatment cost of a large amount of hazardous wastes;
2) clearance of sour gas and heavy metal is high, the sludge incineration tail gas cleaning system mainly is to sour gas (HCl, HF, SOx), nitrogen oxide (NOx), particle and heavy metal etc. are controlled, the flue gas washing tower also can reach more than 90% to the clearance of sour gas in the tail gas, general organic pollution and heavy metal also had good removal efficient, arrange in pairs or groups electrostatic precipitator and the sack cleaner of high clearance, then particulate pollutant and removal efficiency of heavy metals can reach except the 99%(Hg) more than;
3) energy consumption is low, economic benefit is high, the flying dust that dry electrostatic cleaner can guarantee to produce in dedusting time the (identifying through national authority mechanism) is disposed as Ordinary solid waste, avoid producing the expensive treatment cost of a large amount of hazardous wastes, active carbon in the sack cleaner enters flue by conveying and dosing system again and recycles, reduced the consumption of active carbon, so the cost of this technique is low, economic benefit is high;
4) design of whole system, device fabrication, the supply of material, installation, debugging degree domestic are high; This system equipment all can be produced by domestic manufacturer, carries out investment cost low, and purification efficiency is high, satisfies national solid incineration tail gas discharge standard.
Description of drawings
Fig. 1 is the structural representation of the complexes of the described a kind of wet-treating sludge incineration tail gas of the utility model embodiment;
Fig. 2 is a kind of process chart of complete method of wet-treating sludge incineration tail gas.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
Embodiment 1
As shown in Figure 1, a kind of complexes of wet-treating sludge incineration tail gas, comprise dry electrostatic cleaner 1, smoke re-heater 2, sack cleaner 3 and flue gas washing tower 4, one end of described dry electrostatic cleaner 1 is connected with the sludge incineration tail gas pipeline, the other end of dry electrostatic cleaner 1 connects smoke re-heater 2 by pipeline, connect sack cleaner 3 by positon of near bottom by pipeline on smoke re-heater 2 right side walls, the top of sack cleaner 3 connects compressed air cylinder 5 by pipeline, connect flue gas washing tower 4 near top end by pipeline on sack cleaner 3 right side walls, be connected with smoke re-heater 2 by pipeline near top end on flue gas washing tower 4 right side walls, connect air-introduced machine 6 near top end by pipeline on smoke re-heater 2 right side walls, air-introduced machine 6 connects chimney 7 by pipeline, and the sidewall of chimney 7 is provided with on-line monitoring system 8.
The complexes of wet-treating sludge incineration tail gas of the present utility model, the inside of described dry electrostatic cleaner 1 is provided with corona discharge electrode system and receiving electrode system, dry electrostatic cleaner 1 is removed most of dust in the sludge incineration tail gas by corona discharge electrode system and receiving electrode system, then adopts impact endurance test shock to come dust on the stripping electrode.
The complexes of wet-treating sludge incineration tail gas of the present utility model, the bottom that described dry electrostatic cleaner 1 is connected with smoke re-heater all connects grey conveying worm 9 by pipeline, and grey conveying worm 9 connects ash silo 10 by pipeline.
The complexes of wet-treating sludge incineration tail gas of the present utility model, be connected active carbon warehouse 11 and calcium hydroxide warehouse 12 on the connecting pipe between described smoke re-heater 2 and the sack cleaner 3, active carbon warehouse 11 is connected with the calcium hydroxide warehouse and is connected respectively roots blower 13 by pipeline.
The complexes of wet-treating sludge incineration tail gas of the present utility model, the bottom of described sack cleaner 3 connects grey conveying worm 14 by pipeline, and grey conveying worm 14 connects reject bin 15 by pipeline.
The complexes of wet-treating sludge incineration tail gas of the present utility model, the inside of described sack cleaner 3 is provided with bypass line, so that system's sustainable operation between fault/turn(a)round.
As shown in Figure 2, the complete method of wet-treating sludge incineration tail gas may further comprise the steps:
1) sludge incineration tail gas at first enters dry electrostatic cleaner 1, rely on dry electrostatic cleaner 1 inner corona discharge electrode system and the receiving electrode system that arranges to remove most of dust with the electrostatic depuration method, then adopt impact endurance test shock to come dust on the stripping electrode, dust removal efficiency can reach more than 99%, and the flying dust that dry electrostatic cleaner is collected is transported to ash silo by grey conveying worm;
2) tail gas enters smoke re-heater 2 subsequently, and with the tail gas heat exchange of passing through after flue gas washing tower 4 is processed, the ash that smoke re-heater 2 is collected is delivered to grey conveying worm 9 as Ordinary solid waste, is transported to afterwards ash silo 10;
3) on the flue before entering sack cleaner 3, spray into active carbon and calcium hydroxide powder by roots blower 13 respectively, sour gas in the cleaning of off-gas and other pollutant (mainly being dioxins materials, heavy metal Hg etc.) then enter sack cleaner 3;
When 4) tail gas passed through the filter bag of sack cleaner 3, the dust in the tail gas was trapped within the filter bag outer surface, thereby is purified; Active carbon in the sack cleaner 3 enters flue by conveying and dosing system again and recycles; Flying dust is collected by the dust collector ash hopper of sack cleaner 3 bottoms, and then by grey conveying worm 14 reject bin 15 of packing into, outward transport is disposed as danger wastes;
5) flue gas after sack cleaner 3 is processed enters in the flue gas washing tower 4, fully mix with the alkali liquor absorption agent of ejecting, and the sour gas in the flue gas and absorbent generation chemical reaction, thus removed;
6) lower through the flue-gas temperature after 4 washings of flue gas washing tower, generate for preventing misty rain, flue gas returns smoke re-heater 2, and the flue gas heat exchange after processing with process dry electrostatic cleaner 1 is warming up to about 110 ℃;
7) be arranged on line monitoring system 8 at chimney 7 sidewalls, in real time flue gas detected, so that the adjusting process parameter guarantees that flue gas is up to standard; Drawn by air-introduced machine 6 through the flue gas up to standard that purifies, enter chimney 7 high altitude discharges.
The complete method of wet-treating sludge incineration tail gas, the inside of described sack cleaner 3 is provided with bypass line, so that system's sustainable operation between fault/turn(a)round.
Rely on Shanghai bamboo plantation Treatment of Sludge project, the complexes of this wet-treating sludge incineration tail gas mainly comprise: dry electrostatic cleaner removes dust; Sack cleaner to dust, activated carbon granule and on adhere to the removal of pollutants such as De bioxin, heavy metal; Active Carbon in Organic (bioxin) and the absorption of heavy metal; Calcium hydroxide and flue gas washing tower remove sour gas (HCl, HF, SOx), contain following steps:
(1) sludge incineration tail gas (temperature is 230 ℃) at first enters dry electrostatic cleaner, rely on corona discharge electrode and two systems of receiving electrode absorption dust of deduster, and the employing impact endurance test shock comes the dust on the stripping electrode, be used for removing most of dust, produce general solid waste, be transported to ash silo, efficiency of dust collection can reach more than 99%; Export exhaust temperature this moment is 226 ℃, and whole process drag losses is not more than 200Pa;
(2) tail gas enters smoke re-heater subsequently, with finish flue gas washing and process after temperature be 50 ℃ tail gas heat exchange, be cooled to 170 ℃ by 226 ℃, the ash that smoke re-heater is collected is transported to ash silo as Ordinary solid waste; Smoke re-heater adopts the high heat-pipe heat exchanger of gas-gas heat exchange efficient;
(3) subsequently on the flue of tail gas before entering sack cleaner, spray into active carbon and calcium hydroxide powder, in flue, fully mix with tail gas, by the pollutant in the charcoal absorption tail gas (mainly Shi dioxins materials, heavy metal Hg etc.), then enter next treating apparatus-sack cleaner;
Temperature when (4) tail gas enters sack cleaner is 170 ℃, drag losses is not more than 1500Pa, active carbon in the sack cleaner enters flue by conveying and dosing system again and recycles, flying dust is collected by the dust collector ash hopper of sack cleaner bottom, be transported to reject bin by conveying worm, outward transport is disposed as danger wastes.Sack cleaner is established bypass line, when starting or system in service when breaking down, when occurring overtemperature (〉=220) or low temperature (≤150 ℃) before the sack cleaner, automatically open the bypass line valve, tail gas without sack cleaner directly by bypass line by smoke stack emission, prevent burning bag or stick with paste bag, effectively protected cloth bag;
(4) tail gas after sack cleaner is processed enter in the flue gas washing tower lower the temperature, depickling processes.Scrubbing tower is respectively depickling section and temperature descending section from bottom to top, and the depickling section adopts NaOH solution as absorbent, absorbs the HCl in the tail gas, and the sour gas such as SOx, water during the temperature descending section cooling water adopts, tail gas are finished cooling during from bottom to top by filler;
(5) exhaust temperature is lower after the washing, is about 50 ℃, generates for preventing misty rain, and tail gas heat exchange after tail gas returns flue gas heat-exchange unit and processes through dry electrostatic cleaner is warming up to about 110 ℃;
Drawn by air-introduced machine through the tail gas up to standard that purifies, enter the chimney high altitude discharge.Be arranged on line monitoring system on the sidewall of chimney, in real time tail gas detected, so that the adjusting process parameter guarantees that tail gas is up to standard.
The above only is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (6)
1. the complexes of a wet-treating sludge incineration tail gas, comprise dry electrostatic cleaner (1), smoke re-heater (2), sack cleaner (3) and flue gas washing tower (4), it is characterized in that: an end of dry electrostatic cleaner (1) is connected with the sludge incineration tail gas pipeline, the other end of dry electrostatic cleaner (1) connects smoke re-heater (2) by pipeline, connect sack cleaner (3) by positon of near bottom by pipeline on smoke re-heater (2) right side wall, the top of sack cleaner (3) connects compressed air cylinder (5) by pipeline, connect flue gas washing tower (4) near top end by pipeline on sack cleaner (3) right side wall, be connected with smoke re-heater (2) by pipeline near top end on flue gas washing tower (4) right side wall, connect air-introduced machine (6) near top end by pipeline on smoke re-heater (2) right side wall, air-introduced machine (6) connects chimney (7) by pipeline, and the sidewall of chimney (7) is provided with on-line monitoring system (8).
2. according to claim 1 the complexes of wet-treating sludge incineration tail gas, it is characterized in that: the inside of dry electrostatic cleaner (1) is provided with corona discharge electrode system and receiving electrode system.
3. according to claim 1 the complexes of wet-treating sludge incineration tail gas, it is characterized in that: dry electrostatic cleaner (1) is connected 2 with smoke re-heater) the bottom all connect grey conveying worm (9) by pipeline, grey conveying worm (9) connects ash silo (10) by pipeline.
4. according to claim 1 the complexes of wet-treating sludge incineration tail gas, it is characterized in that: be connected active carbon warehouse (11) and calcium hydroxide warehouse (12) on the connecting pipe between smoke re-heater (2) and the sack cleaner (3), active carbon warehouse (11) is connected 12 with the calcium hydroxide warehouse) connect respectively roots blower (13) by pipeline.
5. according to claim 1 the complexes of wet-treating sludge incineration tail gas, it is characterized in that: the bottom of sack cleaner (3) connects grey conveying worm (14) by pipeline, and grey conveying worm (14) connects reject bin (15) by pipeline.
6. according to claim 1 the complexes of wet-treating sludge incineration tail gas, it is characterized in that: the inside of sack cleaner (3) is provided with bypass line.
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| CN201220471140.3U CN202740997U (en) | 2012-09-14 | 2012-09-14 | Complete device for processing sludge incineration tail gas by using wet method |
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| CN201220471140.3U CN202740997U (en) | 2012-09-14 | 2012-09-14 | Complete device for processing sludge incineration tail gas by using wet method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824837A (en) * | 2012-09-14 | 2012-12-19 | 北京机电院高技术股份有限公司 | Complete equipment and method for wet processing of sludge incineration offgas |
| CN111569636A (en) * | 2020-05-12 | 2020-08-25 | 江苏泽龙环保科技有限公司 | Integrated tail gas treatment equipment for sludge incineration |
-
2012
- 2012-09-14 CN CN201220471140.3U patent/CN202740997U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824837A (en) * | 2012-09-14 | 2012-12-19 | 北京机电院高技术股份有限公司 | Complete equipment and method for wet processing of sludge incineration offgas |
| CN111569636A (en) * | 2020-05-12 | 2020-08-25 | 江苏泽龙环保科技有限公司 | Integrated tail gas treatment equipment for sludge incineration |
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Owner name: BMEI CO., LTD. Free format text: FORMER NAME: HIGH TECHNOLOGIES CO., LTD., BEIJING ELECTROMECHANICAL ACADEMY |
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| CP01 | Change in the name or title of a patent holder |
Address after: 100027 Beijing city Chaoyang District Gongti North Road No. 4 Patentee after: BMEI CO.,LTD. Address before: 100027 Beijing city Chaoyang District Gongti North Road No. 4 Patentee before: BMEI CO.,LTD. |
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Granted publication date: 20130220 |