CN204593400U - A kind of industry danger waste burning system of multiple physical states - Google Patents
A kind of industry danger waste burning system of multiple physical states Download PDFInfo
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- CN204593400U CN204593400U CN201520288276.4U CN201520288276U CN204593400U CN 204593400 U CN204593400 U CN 204593400U CN 201520288276 U CN201520288276 U CN 201520288276U CN 204593400 U CN204593400 U CN 204593400U
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Abstract
An industry danger waste burning system for multiple physical states, relates to the purification treatment technology field of industry danger refuse.Comprise feed hopper, rotary kiln, dual firing chamber, denitrification apparatus, waste heat boiler, quench tower, half-dried reaction tower, dry type extracting tower, fiber bag precipitator etc.; The utility model process choice rotary kiln incineration, the advantage of this incinerator is the strong adaptability to incinerating waste material, and technology maturation is reliable, and operation is relatively simple, the requirement that various danger is burned in charging, slagged tap, burns completely etc. can be met very well.
Description
Technical field
The utility model relates to the purification treatment technology field of industry danger refuse.
Background technology
More treatment process applied by domestic and international incineration of industry peril waste stove at present fixing and stoker fired grate, Liquid inject stove and pyrolysis gasification furnace etc.Stoker fired grate due to movable part many, maintenance of equipment is comparatively complicated, invests also higher, be used for process house refuse; Liquid inject stove is mainly used in the burning of waste liquid, and charging has limitation; For the incinerator of below 10t/d, pyrolysis gasification furnace application is more, but pyrolysis gasification furnace requires to be less than 300kg/m into stove material density
3, need batching pretreatment be carried out.
For the de-NOx technique of danger waste burning fume treatment, engineering adopts more selective non-catalytic reduction technique (SNCR) and SCR technique (SCR) two kinds.But SCR flue gas needed heating before entering catalysis denitrogenation device, and required catalyst market is mainly overseas brand captures, and system investments is large.
In dangerous waste incineration flue gas purifying technique, say from world wide, wet processing application at most.But wet method water consumption is comparatively large, and produce wastewater flow rate large, system complex, first investment cost is higher and operating cost is high.
Utility model content
The utility model object proposes a kind of industry danger waste burning system being applicable to multiple physical states that can overcome above prior art defect.
The utility model comprises feed hopper, rotary kiln, dual firing chamber, denitrification apparatus, waste heat boiler, quench tower, half-dried reaction tower, dry type extracting tower, fiber bag precipitator; Feed hopper is connected to the kiln hood of rotary kiln, the kiln tail of rotary kiln is connected with the charging aperture of dual firing chamber, the outlet flue of dual firing chamber is connected with the mouth that enters of waste heat boiler, the outlet flue of waste heat boiler is connected with the mouth that enters of quench tower, the outlet flue of quench tower is connected with the mouth that enters of half-dried reaction tower, the outlet flue of half-dried reaction tower is connected with the mouth that enters of dry type extracting tower, and the outlet flue of dry type extracting tower is connected with the mouth that enters of fiber bag precipitator, and the gas outlet of fiber bag precipitator connects air-introduced machine;
The kiln hood of described rotary kiln also connects the first burner and primary air fan;
Described dual firing chamber also connects the second burner and overfire air fan, and dual firing chamber arranges slag-drip opening;
The outlet end of noncorrosive pump is connected on the kiln hood of rotary kiln and a charging aperture of dual firing chamber;
Described waste heat boiler is connected with the delivery port of an intake pump, the water inlet of described intake pump is connected with the delivery port of water oxygen-eliminating device, the water inlet of described water oxygen-eliminating device connects the delivery port of water softener, and waste heat boiler arranges Residual heat removal mouth, and waste heat boiler arranges dreg discharging liquid mouth;
The top of described quench tower inside arranges cool water shower device, and quench tower arranges dreg discharging liquid mouth;
The top of described half-dried reaction tower inside arranges alkali lye spray thrower, and half-dried reaction tower arranges dreg discharging liquid mouth;
Described dry type extracting tower connects pulverized limestone feed bin by charging aperture, and dry type extracting tower arranges dreg discharging liquid mouth;
Described fiber bag precipitator arranges slag-drip opening.
This is practical endangers refuse by feed hopper in rotary kiln and dual firing chamber after twice combustion by industry, adopts heat energy in waste heat boiler recovered flue gas and after denitrogenation, through quench tower cooling again in half-dried reaction tower with Ca (OH)
2carry out neutralization reaction, reacted flue gas again with the calcium hydroxide netralizing absorption in dry type extracting tower, then enter and discharge through fiber bag precipitator dedusting, suspended particulate substance (as dust, the heavy metal be tightly held by activated carbon and dioxin-like chemical etc.) in flue gas is tackled by filter bag, discharges with the form of flying dust; Flue gas after sack cleaner drains into air under the effect of air-introduced machine, by chimney is up to standard.
According to the difference of physical aspect, hazardous waste can be subdivided into solid-state hazardous waste, liquid hazardous waste and semi-solid hazardous waste etc.Present invention process selects rotary kiln incineration, and the advantage of this incinerator is the strong adaptability to incinerating waste material, and technology maturation is reliable, and operation is relatively simple, can meet the requirement that various danger is burned in charging, slagged tap, burns completely etc. very well.
The utility model selects SNCR denitration technique, sprays into urea liquid remove NOx in waste heat boiler first lower furnace portion.This technique take burner hearth as reactor, and by realizing the transformation of boiler, the construction period is short, and cost of investment and operating cost are all lower compared with SNCR.
The smoke processing system that the utility model adopts semidry method and dry method to combine.Reach purification of acidic gas (SO
2, HCl, HF etc.) and absorption flue gas in dioxin, mercury object.While flue gas qualified discharge, save cost of investment and operating cost and reduced the complexity of operation.
The slag-drip opening of dual firing chamber described in the utility model is connected to the feed end of water seal scraper slagging machine, and the material slag after process is stored in ash silo, and convenient solidification workshop of regularly delivering to processes.
The slag-drip opening of the slag-drip opening of dual firing chamber, the dreg discharging liquid mouth of waste heat boiler, the dreg discharging liquid mouth of quench tower, the dreg discharging liquid mouth of half-dried reaction tower, the dreg discharging liquid mouth of dry type extracting tower and fiber bag precipitator is connected to the charging aperture of flying dust bucket by conveyer.The slag of discharging in each device above, liquid are cured process after concentrating.
In order to ensure the stable of Incineration circumstances in stove, prevent tempering, the hermatic door being staggered and opening is set respectively at the kiln hood of rotary kiln and kiln tail.
For ensureing that material is to the transmission of kiln tail, described rotary kiln is obliquely installed, and kiln hood is higher than kiln tail, and gradient is 2 °.
In order to ensure that dual firing chamber's flue-gas temperature reaches standard and flue gas has enough disturbances, described second burner is two, and the air outlet of two the second burners is forward same.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, the utility model is at least provided with feed hopper 1, rotary kiln 2, dual firing chamber 3, waste heat boiler 4, quench tower 5, half-dried reaction tower 6, dry type extracting tower 7, fiber bag precipitator 8, denitrogenation (nitre) device 19.
Feed hopper 1 is connected to the kiln hood of rotary kiln 2, the kiln tail of rotary kiln 2 is connected with the charging aperture of dual firing chamber 3, the outlet flue of dual firing chamber 3 is connected with the mouth that enters of waste heat boiler 4, the outlet flue of waste heat boiler 4 is connected with the mouth that enters of quench tower 5, the outlet flue of quench tower 5 is connected with the mouth that enters of half-dried reaction tower 6, the outlet flue of half-dried reaction tower 6 is connected with the mouth that enters of dry type extracting tower 7, the outlet flue of dry type extracting tower 7 is connected with the mouth that enters of fiber bag precipitator 8, the gas outlet of fiber bag precipitator 8 connects air-introduced machine 9, and the exhaust outlet of air-introduced machine 9 connects chimney 10.
The kiln hood of rotary kiln 2 also connects the first burner 11 and primary air fan 12.
Dual firing chamber 3 also connects the second burner 13 and overfire air fan 14, and dual firing chamber 3 arranges slag-drip opening, and slag-drip opening is by water seal scraper slagging machine 15, and water seal scraper slagging machine 15 is connected with an ash silo.
The outlet end of noncorrosive pump 27 is connected on the kiln hood of rotary kiln 2 and a charging aperture of dual firing chamber 3.
Waste heat boiler 4 is a fin panel casing steam boiler.Running water is connected to the inlet end of water oxygen-eliminating device 17 through the delivery port of water softener 16, and the water outlet end of water oxygen-eliminating device 17 taps into the water inlet of water pump 18, and the delivery port of intake pump 18 is connected to above waste heat boiler 4.Waste heat boiler 4 arranges Residual heat removal mouth, and fin panel casing steam boiler arranges dreg discharging liquid mouth.
The discharge end of denitrogenation (nitre) device 19 is connected on the fume inlet passage of waste heat boiler 4.
The top of quench tower 5 inside arranges cool water shower device 20, and the water inlet of cool water shower device 20 is connected on the water supply pump 21 outside quench tower 5, and quench tower 5 arranges dreg discharging liquid mouth.
The top of half-dried reaction tower 6 inside arranges alkali lye spray thrower 22, and alkali lye spray thrower 22 is connected on the lye pump 23 outside half-dried reaction tower 6, and half-dried reaction tower 6 arranges dreg discharging liquid mouth.
Dry type extracting tower 7 is connected to the discharge end of pulverized limestone feed bin 24 by charging aperture, and dry type extracting tower 7 arranges dreg discharging liquid mouth.
Fiber bag precipitator 8 arranges slag-drip opening.
The slag-drip opening of the dreg discharging liquid mouth of the slag-drip opening of dual firing chamber 3, the dreg discharging liquid mouth of waste heat boiler 4, quench tower 5, the dreg discharging liquid mouth of half-dried reaction tower 6, the dreg discharging liquid mouth of dry type extracting tower 7 and fiber bag precipitator 8 is connected to the charging aperture of flying dust bucket 26 by conveyer 25.
The kiln hood hermatic door 2-1 and kiln tail hermatic door 2-2 that are staggered and open are set respectively at the kiln hood of rotary kiln 2 and kiln tail.
Utility model works principle:
Rubbish enters rotary kiln 2 front end through feed hopper 1.In order to ensure the stable of Incineration circumstances in rotary kiln 2 stove, preventing tempering, being respectively equipped with kiln hood hermatic door 2-1 and kiln tail hermatic door 2-2 at the kiln hood of rotary kiln 2 and kiln tail place, twice gas-tight door is staggered the time unlatching.Liquid wastes are sent to rotary kiln 2 respectively by noncorrosive pump 27 and dual firing chamber 3 burns respectively.The general waste liquid that incinerating combustion value is higher in rotary kiln 2, partly or entirely replaces auxiliary fuel, saves operating cost; Other low heat value waste liquids that rotary kiln should not burn can be burned in dual firing chamber 3.
Hazardous waste is sent in rotary kiln 2 body by feeding mechanism and is carried out high temperature incineration, through 60min(45 ~ 75min) left and right high temperature incineration, material is thoroughly burned into high-temperature flue gas and lime-ash, its operating temperature should control at about 850 DEG C, high-temperature flue gas enters dual firing chamber 3 from the kiln tail of rotary kiln 2, incineration residue enters water seal scraper slagging machine 15 from the slag-drip opening of dual firing chamber 3, water-cooled laggard enter ash silo, regularly deliver to solidification workshop process.
Rotary kiln 2 adopts downflow type, comprises several parts such as kiln hood, body, kiln tail, transmission mechanism.The Main Function of kiln hood be material smooth and easy charging, arrange a multi fuel burner and the conveying of combustion air and the sealing of rotary kiln and kiln hood.For ensureing that material transmits smoothly to kiln tail, rotary kiln 2 is installed with the gradient of 2 °, and kiln hood is higher than kiln tail.
In order to avoid radiation and dual firing chamber 3 shell overheated, dual firing chamber 3 is designed to the cylindrical tube be made up of steel plate and refractory material.The air outlet introducing two the second burners, 13, two the second burners 13 in dual firing chamber 3 is forward same.During burning, flame is tangent upwards forms eddy current, increases disturbance and reaches the object of fully decomposing harmful components.The gas do not burnt completely on a small quantity in rotary kiln 2 is fully burned in dual firing chamber 3, and improve dual firing chamber 3 temperature, in dual firing chamber 3, temperature maintains more than 1100 DEG C all the time, flue gas time of staying in dual firing chamber will be greater than 2s, and in flue gas, bioxin will be broken off with more than 99.99% of other harmful components.
The waste heat boiler 4 of vertical is entered from the high-temperature flue gas of dual firing chamber 3 outlet flue discharge.Waste heat boiler adopts fin panel casing steam boiler, major parameter: feed temperature 104 DEG C, steam pressure 1.0Mpa, vapor (steam) temperature 184 DEG C.Partial heat energy in flue gas reclaims by waste heat boiler 4, and the steam of generation is used for the Secondary Air of dual firing chamber 3, thermal deaerator and heat supply user and uses.
In the first backhaul of waste heat boiler 4, nitrogen rejection facility 19 is set.On the fume inlet passage of waste heat boiler 4, spray reaction raw materials by the discharge end of denitrogenation (nitre) device 19, denitrification process adopts on-catalytic method reduction (SNCR method) control NOx.Then after the heat recovery of waste heat boiler 4, quench tower 5 is entered from waste heat boiler 4 exiting flue gas, chilling cooling in quench tower 5.The exiting flue gas of quench tower 5 in half-dried reaction tower 6 with the Ca (OH) of sprayed into by atomizer 20%
2slurries mix fully, the sour gas such as SOx, HCl in flue gas and Ca (OH)
2be removed after carrying out neutralization reaction; Flue gas enters dry type extracting tower 7 again.
In dry type extracting tower 7, heavy metal in the sour gas in flue gas and calcium hydroxide generation neutralization, flue gas etc. and active carbon generation suction-operated, all removal to a certain extent; Dry type extracting tower 7 exiting flue gas enters fiber bag precipitator 8, and in fiber bag precipitator, the suspended particulate substance (as dust, the heavy metal be tightly held by activated carbon and dioxin-like chemical etc.) in flue gas is tackled by filter bag, discharges with the form of flying dust; Flue gas after sack cleaner 8 drains into air under the effect of air-introduced machine 9, by chimney 10 is up to standard.
Claims (6)
1. an industry danger waste burning system for multiple physical states, it is levied and is to comprise feed hopper, rotary kiln, dual firing chamber, denitrification apparatus, waste heat boiler, quench tower, half-dried reaction tower, dry type extracting tower, fiber bag precipitator; Feed hopper is connected to the kiln hood of rotary kiln, the kiln tail of rotary kiln is connected with the charging aperture of dual firing chamber, the outlet flue of dual firing chamber is connected with the mouth that enters of waste heat boiler, the outlet flue of waste heat boiler is connected with the mouth that enters of quench tower, the outlet flue of quench tower is connected with the mouth that enters of half-dried reaction tower, the outlet flue of half-dried reaction tower is connected with the mouth that enters of dry type extracting tower, and the outlet flue of dry type extracting tower is connected with the mouth that enters of fiber bag precipitator, and the gas outlet of fiber bag precipitator connects air-introduced machine;
The kiln hood of described rotary kiln also connects the first burner and primary air fan;
Described dual firing chamber also connects the second burner and overfire air fan, and dual firing chamber arranges slag-drip opening;
The outlet end of noncorrosive pump is connected on the kiln hood of rotary kiln and a charging aperture of dual firing chamber;
Described waste heat boiler is connected with the delivery port of an intake pump, the water inlet of described intake pump is connected with the delivery port of water oxygen-eliminating device, the water inlet of described water oxygen-eliminating device connects the delivery port of water softener, and waste heat boiler arranges Residual heat removal mouth, and waste heat boiler arranges dreg discharging liquid mouth;
The discharge end of denitrification apparatus is connected on the fume inlet passage of waste heat boiler;
The top of described quench tower inside arranges cool water shower device, and quench tower arranges dreg discharging liquid mouth;
The top of described half-dried reaction tower inside arranges alkali lye spray thrower, and half-dried reaction tower arranges dreg discharging liquid mouth;
Described dry type extracting tower connects pulverized limestone feed bin by charging aperture, and dry type extracting tower arranges dreg discharging liquid mouth;
Described fiber bag precipitator arranges slag-drip opening.
2. the industry danger waste burning system of multiple physical states according to claim 1, it is levied and is: the slag-drip opening of described dual firing chamber is connected to the feed end of water seal scraper slagging machine.
3. the industry danger waste burning system of multiple physical states according to claim 1, it is levied and is: the slag-drip opening of the slag-drip opening of dual firing chamber, the dreg discharging liquid mouth of waste heat boiler, the dreg discharging liquid mouth of quench tower, the dreg discharging liquid mouth of half-dried reaction tower, the dreg discharging liquid mouth of dry type extracting tower and fiber bag precipitator is connected to the charging aperture of flying dust bucket by conveyer.
4. the industry danger waste burning system of multiple physical states according to claim 1 or 2 or 3, it is levied and is: arrange at the kiln hood of rotary kiln and kiln tail the hermatic door being staggered and opening respectively.
5. the industry danger waste burning system of multiple physical states according to claim 1, it is levied and is: described rotary kiln is obliquely installed, and kiln hood is higher than kiln tail, and gradient is 2 °.
6. the industry danger waste burning system of multiple physical states according to claim 1, it is levied and is: described second burner is two, and the air outlet of two the second burners is forward same.
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Cited By (12)
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| CN106215664A (en) * | 2016-08-31 | 2016-12-14 | 重庆赛迪热工环保工程技术有限公司 | Danger waste burning system flue gas combination method of denitration and device |
| CN106500105A (en) * | 2016-09-30 | 2017-03-15 | 江西东江环保技术有限公司 | The incineration treatment method of waste |
| CN108800139A (en) * | 2018-05-03 | 2018-11-13 | 陕西理工大学 | A kind of house refuse full-automation processing system and method |
| CN108905615A (en) * | 2018-08-31 | 2018-11-30 | 江苏绿景环保设备有限公司 | Smoke processing system and method after a kind of dangerous waste incineration |
| CN109059005A (en) * | 2018-07-17 | 2018-12-21 | 福建兴业东江环保科技有限公司 | A kind of hazardous waste processing system |
| CN109237486A (en) * | 2018-09-28 | 2019-01-18 | 新中天环保股份有限公司 | A kind of incineration of waste technique |
| CN109896790A (en) * | 2019-03-01 | 2019-06-18 | 天津诚天环境工程有限公司 | A kind of integrated technique of industry hazardous waste sludge production environmental protection brick |
| CN110553273A (en) * | 2019-09-26 | 2019-12-10 | 上海博士高环保科技有限公司 | Hazardous waste incineration double-dry-method flue gas treatment system and treatment method |
| CN110848699A (en) * | 2019-10-28 | 2020-02-28 | 福建龙兰环保科技有限公司 | Garbage pyrolysis incineration system |
| CN111928263A (en) * | 2020-07-10 | 2020-11-13 | 山东东顺环保科技有限公司 | System for utilize rotary kiln to burn burning furnace and handle hazardous waste |
| CN114177760A (en) * | 2022-02-16 | 2022-03-15 | 浙江百能科技有限公司 | System and method for oxidizing active oxygen in hazardous waste incineration flue gas and integrally discharging hazardous waste incineration flue gas in ultralow emission mode |
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| CN106215664A (en) * | 2016-08-31 | 2016-12-14 | 重庆赛迪热工环保工程技术有限公司 | Danger waste burning system flue gas combination method of denitration and device |
| CN106500105A (en) * | 2016-09-30 | 2017-03-15 | 江西东江环保技术有限公司 | The incineration treatment method of waste |
| CN108800139A (en) * | 2018-05-03 | 2018-11-13 | 陕西理工大学 | A kind of house refuse full-automation processing system and method |
| CN108800139B (en) * | 2018-05-03 | 2020-07-14 | 陕西理工大学 | Full-automatic treatment system and method for household garbage |
| CN109059005A (en) * | 2018-07-17 | 2018-12-21 | 福建兴业东江环保科技有限公司 | A kind of hazardous waste processing system |
| CN108905615A (en) * | 2018-08-31 | 2018-11-30 | 江苏绿景环保设备有限公司 | Smoke processing system and method after a kind of dangerous waste incineration |
| CN109237486B (en) * | 2018-09-28 | 2020-05-22 | 新中天环保股份有限公司 | Waste incineration process |
| CN109237486A (en) * | 2018-09-28 | 2019-01-18 | 新中天环保股份有限公司 | A kind of incineration of waste technique |
| CN109896790A (en) * | 2019-03-01 | 2019-06-18 | 天津诚天环境工程有限公司 | A kind of integrated technique of industry hazardous waste sludge production environmental protection brick |
| CN110553273A (en) * | 2019-09-26 | 2019-12-10 | 上海博士高环保科技有限公司 | Hazardous waste incineration double-dry-method flue gas treatment system and treatment method |
| CN110848699A (en) * | 2019-10-28 | 2020-02-28 | 福建龙兰环保科技有限公司 | Garbage pyrolysis incineration system |
| CN111928263A (en) * | 2020-07-10 | 2020-11-13 | 山东东顺环保科技有限公司 | System for utilize rotary kiln to burn burning furnace and handle hazardous waste |
| CN114177760A (en) * | 2022-02-16 | 2022-03-15 | 浙江百能科技有限公司 | System and method for oxidizing active oxygen in hazardous waste incineration flue gas and integrally discharging hazardous waste incineration flue gas in ultralow emission mode |
| CN114177761A (en) * | 2022-02-16 | 2022-03-15 | 浙江百能科技有限公司 | Ultralow emission system and method for hazardous waste incineration flue gas pollutants |
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