CN205650074U - Domestic waste burns combination deacidification dust pelletizing system of flue gas - Google Patents
Domestic waste burns combination deacidification dust pelletizing system of flue gas Download PDFInfo
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- CN205650074U CN205650074U CN201620476486.0U CN201620476486U CN205650074U CN 205650074 U CN205650074 U CN 205650074U CN 201620476486 U CN201620476486 U CN 201620476486U CN 205650074 U CN205650074 U CN 205650074U
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Abstract
The utility model provides a domestic waste burns combination deacidification dust pelletizing system of flue gas, pours into subsystem, spraying reaction tower subsystem, reaction auxiliary agent injection subsystem and one -level sack reaction subsystem into including the sodium bicarbonate who connects gradually, sodium bicarbonate injects the subsystem into and accomplishes the reaction of deacidification for the first time with the flue gas input pipeline that sodium bicarbonate sent into before the spraying reaction tower subsystem, for the first time deacidification reacted flue gas gets into spraying reaction tower subsystem, its top spout into niter mortar droplet and domestic waste in the spraying reaction tower burn the flue gas and fully contact and accomplish the reaction of deacidification for the second time, export through the reacted of deacidification for the second time flue gas one -level sack reaction subsystem, reaction auxiliary agent injection subsystem will react the auxiliary agent and send into one -level sack reactor, the flue gas carries out the deacidification reaction third time in sack reaction subsystem chinese side and reaction auxiliary agent. Tertiary deacidification reaction makes the acid gas's in the flue gas emission further reduce, the emission requirement that reaches or even surpass the higher standard.
Description
Technical field
This utility model relates to general method or apparatus physically or chemically, particularly relates to the separation of gas or steam, relates to the chemical cleaning method of incineration flue gas of household garbage, particularly relates to the combination deacidification dust pelletizing system of incineration flue gas of household garbage.
Background technology
Prior art generally uses semidry method and dry method to carry out the fume treatment of burning domestic garbage, eliminates and burns acid flue dust, the nitrogen oxides NO producedxDeng, reduce two English and heavy metal pollution and PM2.5 fine dust.
The semidry method incineration flue gas of household garbage deacidification of prior art, is to utilize the principle being spray-dried to spray in spraying reaction tower by Sal Nitri mortar, on the one hand utilizes the heat of flue gas that the droplet moisture sprayed into evaporation is formed the mealy solid particle being dried and collects；On the other hand in incineration flue gas of household garbage, sour gas and slaked lime serosity occur chemical absorbing to react simultaneously, reach the purpose of deacidification.The product formed after completing deacidification reaction in tower, part is by bottom cone outlet discharge in tower, and another part discharges in entering fiber bag precipitator with flue gas after activated carbon powder adsorption cleaning.The shortcoming of semidry process is, coagulation is the most only taked in the absorption of deacidification dedusting and heavy metal two English, Sal Nitri mortar and the flue gas response time in spraying reaction tower is short, sour gas and noxious substance can not be removed for a full due, effectively acid removal rate only has about 85%, it is impossible to meet higher environmental requirement.
The dry method incineration flue gas of household garbage deacidification of prior art, it is to utilize two-fluid spray gun by water high-pressure atomization, spray in spraying reaction tower with flue gas sufficient heat exchange, to reach atomization cooling, make flue gas reach optimal temperature and humidity, then carry out chemical deacidification and adsorption reaction through pipeline with slaked lime, the activated carbon powder sprayed into simultaneously.But removing noxious substance and dedusting is the most all carried out inside cloth bag reactor, after purification, flue gas is through smoke stack emission.The shortcoming of dry process is, it is dry powder Calx due to spray at flue, it and smoke reaction are inefficient, deacidification efficiency only has 70-80%, obtain higher reaction effect and must put into more lime reaction agent, the running resistance that simultaneously can cause cloth bag reactor is at a relatively high, it is impossible to meet higher environment protection emission requirement.In order to make the harmless treatment of incineration flue gas of household garbage can reach the national standard of requirements at the higher level, it is necessary to improve processing system and the process of above-mentioned prior art incineration flue gas of household garbage.
In China, it is the highest that the domestic garbage burning electricity generation project in the above city of provincial capital has brought up to EU criteria to standard limit of smog release, incineration flue gas of household garbage treating method and apparatus involved by this utility model is that combination type deacidification dedusting integration process is, semidry method+dry method+cloth bag deacidification dust collecting process, it is to take the flue dust produced for burning and poisonous, harmful gas etc. to process according to incineration flue gas characteristic, reduces the gas cleaning process technique of two English and heavy metal pollution and the discharge of PM2.5 fine dust.Flue gas after so processing fully meets the environment protection emission requirement of latest national standards, and primary discharge index is also advantageous over EU criteria.
Utility model content
The technical problems to be solved in the utility model is that the fume emission after avoiding prior art incineration flue gas of household garbage processing system to process can not meet the weak point of requirements at the higher level discharge standard and propose the combination deacidification dust pelletizing system of one way of life flue gas of refuse burning, incineration flue gas of household garbage after using the method and system to process fully meets the environment protection emission requirement of latest national standards, and primary discharge index is also advantageous over EU criteria.
This utility model is to solve described technical problem to employed technical scheme comprise that the combination deacidification dust pelletizing system of one way of life flue gas of refuse burning, injects subsystem, spraying reaction tower subsystem, reaction promoter injection subsystem and one-level cloth bag reaction subsystem including the sodium bicarbonate being sequentially connected with；Described sodium bicarbonate injects in subsystem flue before spraying reaction tower subsystem and sprays into sodium bicarbonate；Incineration flue gas of household garbage completed the first time deacidification reaction with sodium bicarbonate before entering spraying reaction tower subsystem；The reacted incineration flue gas of household garbage of deacidification for the first time completes second time deacidification in entering spraying reaction tower subsystem, with described spraying reaction tower subsystem and reacts；Described reaction promoter injects subsystem and reaction promoter is sent into one-level cloth bag reaction subsystem；The reacted incineration flue gas of household garbage of deacidification for the second time enters described one-level cloth bag reaction subsystem and carries out third time deacidification reaction with its internal reaction promoter.
Described sodium bicarbonate injects subsystem, including sodium bicarbonate storehouse and sodium bicarbonate blower；Sodium bicarbonate in sodium bicarbonate storehouse is sent into the incineration flue gas of household garbage input channel before spraying reaction tower subsystem by sodium bicarbonate blower；Described spraying reaction tower subsystem includes spraying reaction tower and is arranged on the Sal Nitri mortar atomizer at its top；Described Sal Nitri mortar is got rid of the microdroplet that nebulizes and sheds in spraying reaction tower cavity by this atomizer high speed rotating；Complete the deacidification reacted incineration flue gas of household garbage flue gas input interface from spraying reaction tower side for the first time to input in spraying reaction tower；Sal Nitri mortar droplet and the incineration flue gas of household garbage in spraying reaction tower be fully contacted, completes second time deacidification reacts；Described one-level cloth bag reaction subsystem is exported from the flue gas output interface of spraying reaction tower side through the reacted incineration flue gas of household garbage of second time deacidification；Described reaction promoter injects subsystem and includes the first Sal Nitri ash silo and slaked lime blower；Reaction promoter in first Sal Nitri ash silo is sent into one-level cloth bag reactor via one-level cloth bag input channel by slaked lime blower；Described one-level cloth bag reaction subsystem includes one-level cloth bag reactor and one-level cloth bag input channel；The described input of one-level cloth bag input channel is connected with the flue gas output interface of spraying reaction tower subsystem.
The combination deacidification dust pelletizing system of described incineration flue gas of household garbage also includes that activated carbon powder injects subsystem, including activated carbon powder cabin, activated carbon powder blower；Activated carbon powder in activated carbon powder cabin is sent into one-level cloth bag reactor by one-level cloth bag input channel by activated carbon powder blower.
Described reaction promoter injects subsystem and also includes at least one controllable reaction auxiliary agent Flour blending machine, exports the amount of one-level cloth bag reactor for controlling reaction promoter.
Described sodium bicarbonate injects subsystem and also includes that at least one controlled sodium bicarbonate Flour blending machine exports the amount of one-level cloth bag reactor for controlling sodium bicarbonate.
Described activated carbon powder injects subsystem and also includes at least one controlled activated carbon powder Flour blending machine, exports the amount of one-level cloth bag reactor for controlling activated carbon powder.
The combination deacidification dust pelletizing system of described incineration flue gas of household garbage also includes that subsystem prepared by Sal Nitri mortar；This subsystem includes water tank, the second Sal Nitri ash silo, Sal Nitri mortar pulping tank, Sal Nitri mortar storage tank, Sal Nitri mortar dosing pump；Second Sal Nitri ash silo and water tank are connected with Sal Nitri mortar pulping tank respectively, Calx in second Sal Nitri ash silo and the water in water tank are mixed to form Sal Nitri mortar in Sal Nitri mortar pulping tank, the Sal Nitri mortar prepared is stored in the Sal Nitri mortar storage tank being connected with Sal Nitri mortar pulping tank, and the Sal Nitri mortar in Sal Nitri mortar storage tank pumps into the Sal Nitri mortar atomizer of spray reaction top of tower through Sal Nitri mortar dosing pump.
The combination deacidification dust pelletizing system of described incineration flue gas of household garbage also includes that fume emission detects subsystem；This fume emission detection subsystem includes for monitoring acidic gas concentration monitoring device, air-introduced machine and the chimney of acidic gas concentration in incineration flue gas of household garbage discharge；After acidic gas concentration monitoring device is positioned at air-introduced machine, before chimney；The Sal Nitri mortar amount that the acidic gas concentration that the monitoring of described acidic gas concentration monitoring device obtains inputs from spray reaction top of tower for regulation；When monitoring acidic gas concentration in incineration flue gas of household garbage discharge and being more than acidic gas concentration numerical value in the incineration flue gas of household garbage discharge preset, strengthen described sodium bicarbonate and inject the sodium bicarbonate amount that subsystem is sent into, or strengthen the reaction promoter amount that described reaction promoter injection subsystem is sent into, or strengthen the Sal Nitri mortar amount inputted in spraying reaction tower subsystem from spray reaction top of tower；When monitoring acidic gas concentration in incineration flue gas of household garbage discharge and being less than acidic gas concentration numerical value in the incineration flue gas of household garbage discharge preset, can maintain or reduce described sodium bicarbonate and inject the sodium bicarbonate amount that subsystem is sent into, or maintain or reduce described reaction promoter and inject the reaction promoter amount that subsystem is sent into, or maintain or reduce in spraying reaction tower subsystem the Sal Nitri mortar amount from the input of spray reaction top of tower.
The combination deacidification dust pelletizing system of described incineration flue gas of household garbage also includes that flying dust discharges subsystem, and this subsystem includes ash bucket, fly ash carry equipment and Hui Ku；Ash bucket is connected to the bottom of spraying reaction tower and/or one-level cloth bag reactor in turn and is respectively used to trapping and storage spraying reaction tower and/or the flying dust of one-level cloth bag reactor discharge；Ash bucket collect flying dust, by fly ash carry equipment be transported to ash storehouse.
The most relatively, the beneficial effects of the utility model are: assembled technological uses three grades of deacidification modes, are to enter dry method before spraying reaction tower at flue gas to spray into sodium hydrogen carbonate powder and carry out first order deacidification reaction respectively；In spraying reaction tower, injection slaked lime serosity carries out second level deacidification reaction；In cloth bag, injection reaction promoter powder carries out third level deacidification reaction further；Three grades of deacidification reactions make to react the most abundant, the discharge of the sour gas in incineration flue gas of household garbage can be made to reduce further, reach the incineration flue gas of household garbage emission request even beyond higher standard.
Accompanying drawing explanation
Fig. 1 is the system block diagram of incineration flue gas of household garbage processing system the first preferred embodiment that this utility model relates to；
Fig. 2 is the process flow diagram of this utility model preferred embodiment.
Detailed description of the invention
The combination deacidification dust pelletizing system of the incineration flue gas of household garbage involved by this utility model preferred embodiment includes as shown in Figure 1: the sodium bicarbonate being sequentially connected with injects subsystem 160, spraying reaction tower subsystem 110, reaction promoter injects subsystem 140 and one-level cloth bag reacts subsystem 120；Incineration flue gas of household garbage sequentially passes through before spraying reaction tower, in spraying reaction tower and one-level cloth bag reactor is carried out once respectively, secondary and three deacidifications reaction, fully removes sour gas therein.
As illustrated in fig. 1 and 2, described sodium bicarbonate injects subsystem 160, including sodium bicarbonate storehouse 161 and sodium bicarbonate blower 162；Sodium bicarbonate in sodium bicarbonate storehouse 161 is sent into the incineration flue gas of household garbage input channel before spraying reaction tower subsystem 110 by sodium bicarbonate blower 162；Incineration flue gas of household garbage completed the first time deacidification reaction with sodium bicarbonate before entering spraying reaction tower subsystem 110.
As illustrated in fig. 1 and 2, described spraying reaction tower subsystem 110 includes spraying reaction tower 115 and is arranged on the Sal Nitri mortar atomizer 116 at its top；Described Sal Nitri mortar is got rid of the microdroplet that nebulizes and sheds in spraying reaction tower 115 cavity by this atomizer 116 high speed rotating；Complete the deacidification reacted incineration flue gas of household garbage flue gas input interface from spraying reaction tower 115 side for the first time to input in spraying reaction tower 115；Sal Nitri mortar droplet and the incineration flue gas of household garbage in spraying reaction tower 115 be fully contacted, completes second time deacidification reacts；Described one-level cloth bag reaction subsystem 120 is exported through the second time deacidification reacted incineration flue gas of household garbage flue gas output interface 118 from spraying reaction tower 115 side.
In spraying reaction tower subsystem 110, it is to utilize the principle being spray-dried to spray in spraying reaction tower by Sal Nitri mortar, after incineration flue gas of household garbage enters spraying reaction tower, slaked lime serosity is delivered on rotary atomizer by stock pump, by rotary atomizer or high speed rotating atomizing disk, slaked lime slurry spraying become the fine mist about particle diameter 150～200 μm, it is fully contacted with the sour gas in incineration flue gas of household garbage in spraying reaction tower and carries out in deacidification and react, most of sour gas in flue gas is removed after there is chemical reaction, reach flue gas of refuse burning deacidification purpose, the product calcium salt generated is discharged from the bottom of spraying reaction tower；On the other hand the heat utilizing flue gas of refuse burning provides the reaction temperature that the reaction of deacidification chemical absorbing is optimal, moisture evaporation in the Sal Nitri mortar droplet that the heat of flue gas of refuse burning will spray into simultaneously forms the mealy solid particle being dried and collects, and the product section formed after completing deacidification reaction in spraying reaction tower is discharged by bottom cone outlet in tower.
As illustrated in fig. 1 and 2, described reaction promoter injection subsystem 140 includes the first reaction promoter storehouse 141 and reaction promoter blower 142；First reaction promoter disappeared in reaction promoter storehouse 141 is sent into one-level cloth bag reactor 122 via one-level cloth bag input channel 121 by reaction promoter blower 142；Described one-level cloth bag reaction subsystem 120 includes one-level cloth bag reactor 122 and one-level cloth bag input channel 121；The described input of one-level cloth bag input channel 121 is connected with the flue gas output interface 118 of spraying reaction tower subsystem 110；The reacted incineration flue gas of household garbage of deacidification for the second time enters described one-level cloth bag reaction subsystem 120 and carries out third time deacidification reaction with its internal reaction promoter.
As illustrated in fig. 1 and 2, described reaction promoter injects subsystem 140 and also includes at least one controllable reaction auxiliary agent Flour blending machine 144, exports the amount of one-level cloth bag reactor 122 for controlling reaction promoter.Described sodium bicarbonate injects subsystem 160 and also includes that at least one controlled sodium bicarbonate Flour blending machine 164 exports the amount of one-level cloth bag reactor 122 for controlling slaked lime.
Described reaction promoter is the mixture of any one or more of kieselguhr, active hargil, activated bauxite.Described reaction promoter can also be replaced by slaked lime.Described reaction promoter can also be replaced by the mixture of any one or more of slaked lime and kieselguhr, active hargil, activated bauxite.
Described reaction promoter is the material with acid adsorpting characteristic, includes several porous materials of construction.This porous microcellular structure has special physicochemical property; there is extraordinary adsorptivity; the flue that flue gas passes through sprays into; it is made at the volley the material that flue gas is harmful sufficiently to be contacted and be adsorbed; the reaction promoter progressively piled up is formed on filter bag surface and effectively filters protective layer; acidic materials in absorption flue gas and other harmful substances and steam further, thus ensure that the flue gas of discharge meets environmental requirement.
Kieselguhr: have the advantages that loose, fine and smooth, light weight, porous, water suction, oil absorbency 115% and permeability are strong, and there is special structure structure make it have many special technology and physical property, such as big porosity, stronger adsorptivity, antiwear heat resisting, good carrier.Kieselguhr surface, with elecrtonegativity, can neutralize for positively charged heavy metal contaminants de-steady, physical absorption occurs in its space, and the rate of adsorption is very fast, can be with active adsorption Cd2+、Pb2+、Hg2+、Sr2+Deng.
Active hargil: have nontoxic, odorless, tasteless and absorbability is the strongest, it is dried through mineral acid treatment and makes, coloring matter, organic substance in flue gas there is good adsorption effect, and there is the function of good absorption abnormal flavour, radioactive substance is had adsorption, and absorption steam plays desiccation.
Activated bauxite: have porous, high degree of dispersion, have the biggest surface area, its micropore surface has the characteristic required by catalytic action, absorption property, surface activity, excellent heat stability, good catalyst carrier.Water absorption is big, and rate of drying is fast, can effectively remove the toxic component HF in flue gas and arsenic.Best, because Alumina has preferable adsorptive selectivity to hydrargyrum, to Cd to the adsorptivity of hydrargyrum2+Absorption also very good.
As illustrated in fig. 1 and 2, the combination deacidification dust pelletizing system of described incineration flue gas of household garbage, also include for effectively going the activated carbon powder of removing heavy metals and two English to inject subsystem 150, including activated carbon powder cabin 151, activated carbon powder blower 152；Activated carbon powder in activated carbon powder cabin 151 is sent into one-level cloth bag reactor 122 by one-level cloth bag input channel 121 by activated carbon powder blower 152.Described activated carbon powder injects subsystem 150 and also includes at least one controlled activated carbon powder Flour blending machine 154, exports the amount of one-level cloth bag reactor 122 for controlling activated carbon powder.
As illustrated in fig. 1 and 2, the combination deacidification dust pelletizing system of described incineration flue gas of household garbage, also include preparing subsystem 260 for the Sal Nitri mortar that water and slaked lime proportioning mix and blend are made Sal Nitri mortar；This subsystem includes water tank the 261, second Sal Nitri ash silo 262, Sal Nitri mortar storage tank 263, Sal Nitri mortar dosing pump 264；Second Sal Nitri ash silo 262 and water tank 261 are connected with Sal Nitri mortar storage tank 263 respectively, Calx in second Sal Nitri ash silo 262 and the water in water tank 261 are mixed to form Sal Nitri mortar in Sal Nitri mortar storage tank 263, and Sal Nitri mortar pumps into the Sal Nitri mortar atomizer 116 at spraying reaction tower 115 top through Sal Nitri mortar dosing pump 264.
As illustrated in fig. 1 and 2, the combination deacidification dust pelletizing system of described incineration flue gas of household garbage, also include that fume emission detects subsystem 180；This fume emission detection subsystem 180 includes for monitoring the acidic gas concentration monitoring device 181 of acidic gas concentration, air-introduced machine 182 and chimney 183 in incineration flue gas of household garbage discharge；After acidic gas concentration monitoring device 181 is positioned at air-introduced machine 182, before chimney 183；The Sal Nitri mortar amount that the acidic gas concentration that the monitoring of described acidic gas concentration monitoring device 181 obtains inputs from spraying reaction tower 115 top for regulation；When monitoring acidic gas concentration in incineration flue gas of household garbage discharge and being more than acidic gas concentration numerical value in the incineration flue gas of household garbage discharge preset, strengthen described sodium bicarbonate and inject the sodium bicarbonate amount that subsystem 160 is sent into, or strengthen the reaction promoter amount that described reaction promoter injection subsystem 140 is sent into, or strengthen the Sal Nitri mortar amount inputted in spraying reaction tower subsystem 110 from spraying reaction tower 115 top；When monitoring acidic gas concentration in incineration flue gas of household garbage discharge and being less than acidic gas concentration numerical value in the incineration flue gas of household garbage discharge preset, can maintain or reduce described sodium bicarbonate and inject the sodium bicarbonate amount that subsystem 160 is sent into, or maintain or reduce described reaction promoter and inject the reaction promoter amount that subsystem 140 is sent into, or maintain or reduce in spraying reaction tower subsystem 110 the Sal Nitri mortar amount from the input of spraying reaction tower 115 top.
For the first time, the sodium bicarbonate that sprayed into is reacted in second time and three deacidifications, Sal Nitri mortar, the quantity of reaction promoter can carry out automatic closed loop control according to the result of flue gas detecting system, the raw-material amount of reasonable distribution links input, the deacidification effect making system is best, and the raw material used is minimum.The sodium bicarbonate of the input of links, Sal Nitri mortar, reaction promoter amount can individually adjust, it is also possible to combination adjusts, and can regulate wherein any one or any two or three the most every time and adjust simultaneously.
Described fume emission detection subsystem 180 is possible not only to monitor acid gas component and can also detect other discharge compositions in incineration flue gas of household garbage, and data feedback will be detected to control centre, control centre can adjust sodium bicarbonate that links sprays into, slaked lime serosity, activated carbon powder, the amount of slaked lime according to current flue gas monitoring data parameters, automatically to guarantee the complete qualified qualified discharge of flue gas；Control centre also dependent on current demand for control by artificial master control adjust links spray into sodium bicarbonate, slaked lime serosity, activated carbon powder, the amount of reaction promoter, to guarantee the complete qualified qualified discharge of flue gas.
As illustrated in fig. 1 and 2, the combination deacidification dust pelletizing system of described incineration flue gas of household garbage, also include that flying dust discharges subsystem, this subsystem includes ash bucket 193, fly ash carry equipment 195, ash storehouse 194；Ash bucket 193 is connected to the bottom of spraying reaction tower 115 and/or one-level cloth bag reactor 122 in turn and is respectively used to trapping and storage spraying reaction tower 115 and/or the flying dust of one-level cloth bag reactor 122 discharge；Ash bucket 193 collect flying dust, by fly ash carry equipment 195 be transported to ash storehouse 194.
Incineration flue gas of household garbage combination type deacidification dedusting integration process system involved by this utility model is to combine two kinds of " dry method " techniques on the basis of " semidry method " process system, i.e. combine injection reaction promoter " dry method " technique and injection sodium bicarbonate is commonly called as sodium bicarbonate " dry method " technique, the advantage having gathered two kinds of techniques；In injection sodium bicarbonate " dry method " technique, sodium bicarbonate powder injection was carried out before boiler smoke enters reaction tower, sodium bicarbonate heat pyrolytic generates in sodium carbonate increased activity, with acid gas in flue gas and reaction, plays the effect of one-level deacidification reaction.
After the rear flue gas of one-level deacidification reaction enters reaction tower, slow down owing to space increases air velocity, the lime slurry droplet that rotary atomizer is shed is fully contacted reaction therewith, mainly having lime white drop and the heat exchange reaction of flue gas and lime white to react with the neutralization of acidic flue gas in reaction tower, the heavy particulate matter of two grades of deacidifications reaction generations falls into ash bucket and enters ash storehouse with conveyer.
Two grades of reacted flue gases of deacidification enter cloth bag reactor, spray reaction promoter powder and active carbon powder on the flue of cloth bag reaction, and reaction promoter and remaining sour gas carry out three grades of deacidifications and react on cloth bag surface, it is ensured that acidic flue gas is thoroughly removed；Activated carbon, then at harmful substances such as cloth bag surface adsorption heavy metal and two English, ultimately generates product and is all collected with conveyer entrance ash storehouse by cloth bag reactor.
Incineration flue gas of household garbage first used sodium bicarbonate to carry out the reaction of deacidification for the first time before entering rotating spraying reaction tower, enter back into rotating spraying reaction tower, after occurring second time deacidification to react with the lime slurry of atomization, enter back into one-level bag reactor system, spray into reaction promoter and activated carbon simultaneously, proceed deacidification, adsorption reaction on cloth bag surface, the most effectively remove the sour gas in incineration flue gas of household garbage and harmful and noxious substance；Being controlled the reacting substance of above-mentioned three grades of deacidifications reaction by fume emission detection subsystem 180 feedback information, reach effectively to remove the purpose of acidic materials, the flue gas after purification is through smoke stack emission.
The combination deacidification dust pelletizing system using incineration flue gas of household garbage of the present utility model carries out incineration flue gas of household garbage and purifies the discharge standard fully achieving even better than European Union.The using effect using the combination deacidification dust pelletizing system of incineration flue gas of household garbage of the present utility model is as follows: the sour gas clearance 1, utilizing dry method to spray into sodium bicarbonate powder craft first order deacidification reaction can reach more than 70%；2, use high speed rotating nebulizer that harmful incineration flue gas of household garbage carries out deacidification reaction of spraying at spraying reaction tower, take full advantage of the advantage that the rotating spraying deacidification reaction effect of semidry method is good, removing sour gas in incineration flue gas of household garbage, deacidification efficiency can reach more than 95%；3, utilize dry method to spray into reaction promoter technique and improve deacidification efficiency further, be effectively improved clearance and can reach more than 99%, sufficiently meet high-level environmental requirement；4, assembled technological uses three grades of deacidification modes, is to enter dry method before spraying reaction tower at flue gas to spray into sodium hydrogen carbonate powder and carry out first order deacidification reaction respectively；In spraying reaction tower, injection slaked lime serosity carries out second level deacidification reaction；In cloth bag, injection reaction promoter powder carries out third level deacidification reaction further；Three grades of deacidification reactions make to react the most abundant, the discharge of the sour gas in incineration flue gas of household garbage can be made to reduce further, reach the incineration flue gas of household garbage emission request even beyond higher standard.
Along with waste incineration environment protection emission is required the strictest by country, the various pollutant emission indexs of considered critical in " consumer waste incineration Environmental capacity " new standard that State Bureau of Environmental Protection promulgates, either semidry method or dry process technique are all difficult to meet the environmental protection standard day by day improved, novel combination type processes the process synthesis advantage of kinds of processes, make smoke reaction more fully more perfect, solve incineration flue gas of household garbage deacidification and process halfway problem, ensure that every deacidification index absolute meet environment protection emission requirement, comply fully with and be better than the discharge standard of European Union.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing utility model description and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (9)
1. the combination deacidification dust pelletizing system of one way of life flue gas of refuse burning, it is characterized in that, including: the sodium bicarbonate being sequentially connected with injects subsystem (160), spraying reaction tower subsystem (110), reaction promoter injects subsystem (140) and one-level cloth bag reacts subsystem (120)；
Described sodium bicarbonate injects in the subsystem (160) flue before spraying reaction tower subsystem (110) and sprays into sodium bicarbonate；Incineration flue gas of household garbage completed the first time deacidification reaction with sodium bicarbonate before entering spraying reaction tower subsystem (110)；
The reacted incineration flue gas of household garbage of deacidification for the first time completes second time deacidification in entrance spraying reaction tower subsystem (110), with described spraying reaction tower subsystem (110) and reacts；
Described reaction promoter injects subsystem (140) and reaction promoter is sent into one-level cloth bag reaction subsystem (120)；The reacted incineration flue gas of household garbage of deacidification for the second time enters described one-level cloth bag reaction subsystem (120) and carries out third time deacidification reaction with its internal reaction promoter.
The combination deacidification dust pelletizing system of incineration flue gas of household garbage the most according to claim 1, it is characterised in that
Described sodium bicarbonate injects subsystem (160), including sodium bicarbonate storehouse (161) and sodium bicarbonate blower (162)；Sodium bicarbonate in sodium bicarbonate storehouse (161) is sent into the incineration flue gas of household garbage input channel before spraying reaction tower subsystem (110) by sodium bicarbonate blower (162)；
Described spraying reaction tower subsystem (110) includes spraying reaction tower (115) and is arranged on Sal Nitri mortar atomizer (116) at its top；Described Sal Nitri mortar is got rid of the microdroplet that nebulizes and sheds in spraying reaction tower (115) cavity by this atomizer (116) high speed rotating；Complete the deacidification reacted incineration flue gas of household garbage flue gas input interface from spraying reaction tower (115) side for the first time to input in spraying reaction tower (115)；Sal Nitri mortar droplet and the incineration flue gas of household garbage in spraying reaction tower (115) be fully contacted, completes second time deacidification reacts；Through flue gas output interface (118) output from spraying reaction tower (115) side of the second time deacidification reacted incineration flue gas of household garbage to described one-level cloth bag reaction subsystem (120)；
Described reaction promoter injects subsystem (140) and includes the first reaction promoter storehouse (141) and reaction promoter blower (142)；Reaction promoter in first reaction promoter storehouse (141) is sent into one-level cloth bag reactor (122) via one-level cloth bag input channel (121) by reaction promoter blower (142)；Described one-level cloth bag reaction subsystem (120) includes one-level cloth bag reactor (122) and one-level cloth bag input channel (121)；The input of described one-level cloth bag input channel (121) is connected with the flue gas output interface (118) of spraying reaction tower subsystem (110).
The combination deacidification dust pelletizing system of incineration flue gas of household garbage the most according to claim 1, it is characterised in that
Also include that activated carbon powder injects subsystem (150), including activated carbon powder cabin (151), activated carbon powder blower (152)；Activated carbon powder in activated carbon powder cabin (151) is sent into one-level cloth bag reactor (122) by one-level cloth bag input channel (121) by activated carbon powder blower (152).
The combination deacidification dust pelletizing system of incineration flue gas of household garbage the most according to claim 1, it is characterized in that, described reaction promoter injects subsystem (140) and also includes at least one controllable reaction auxiliary agent Flour blending machine (144), is used for controlling reaction promoter and exports the amount of one-level cloth bag reactor (122).
The combination deacidification dust pelletizing system of incineration flue gas of household garbage the most according to claim 1, it is characterized in that, described sodium bicarbonate injects subsystem (160) and also includes that at least one controlled sodium bicarbonate Flour blending machine (164) is used for controlling slaked lime and exports the amount of one-level cloth bag reactor (122).
The combination deacidification dust pelletizing system of incineration flue gas of household garbage the most according to claim 3, it is characterized in that, described activated carbon powder injects subsystem (150) and also includes at least one controlled activated carbon powder Flour blending machine (154), is used for controlling activated carbon powder and exports the amount of one-level cloth bag reactor (122).
7. according to the combination deacidification dust pelletizing system of the incineration flue gas of household garbage described in any one of claim 1 to 6, it is characterised in that
Also include that subsystem (260) prepared by Sal Nitri mortar；This subsystem includes water tank (261), the second Sal Nitri ash silo (262), Sal Nitri mortar pulping tank (265), Sal Nitri mortar storage tank (263), Sal Nitri mortar dosing pump (264)；Second Sal Nitri ash silo (262) and water tank (261) are connected with Sal Nitri mortar pulping tank (265) respectively, Calx in second Sal Nitri ash silo (262) and the water in water tank (261) are mixed to form Sal Nitri mortar in Sal Nitri mortar pulping tank (265), the Sal Nitri mortar prepared is stored in Sal Nitri mortar storage tank (263) being connected with Sal Nitri mortar pulping tank (265), and the Sal Nitri mortar in Sal Nitri mortar storage tank (263) pumps into Sal Nitri mortar atomizer (116) at spraying reaction tower (115) top through Sal Nitri mortar dosing pump (264).
8. according to the combination deacidification dust pelletizing system of the incineration flue gas of household garbage described in any one of claim 1 to 6, it is characterised in that
Also include fume emission detection subsystem (180)；This fume emission detection subsystem (180) includes for monitoring the acidic gas concentration monitoring device (181) of acidic gas concentration, air-introduced machine (182) and chimney (183) in incineration flue gas of household garbage discharge；After acidic gas concentration monitoring device (181) is positioned at air-introduced machine (182), before chimney (183)；
The Sal Nitri mortar amount that the acidic gas concentration that the monitoring of described acidic gas concentration monitoring device (181) obtains inputs from spraying reaction tower (115) top for regulation；When monitoring acidic gas concentration in incineration flue gas of household garbage discharge and being more than acidic gas concentration numerical value in the incineration flue gas of household garbage discharge preset, strengthen described sodium bicarbonate and inject the sodium bicarbonate amount that subsystem (160) is sent into, or strengthen the reaction promoter amount that described reaction promoter injection subsystem (140) is sent into, or strengthen the Sal Nitri mortar amount inputted in spraying reaction tower subsystem (110) from spraying reaction tower (115) top；When monitoring acidic gas concentration in incineration flue gas of household garbage discharge and being less than acidic gas concentration numerical value in the incineration flue gas of household garbage discharge preset, can maintain or reduce described sodium bicarbonate and inject the sodium bicarbonate amount that subsystem (160) is sent into, or maintain or reduce described reaction promoter and inject subsystem (140) the reaction promoter amount sent into, or maintain or reduce in spraying reaction tower subsystem (110) the Sal Nitri mortar amount from the input of spraying reaction tower (115) top.
9. according to the combination deacidification dust pelletizing system of the incineration flue gas of household garbage described in any one of claim 1 to 6, it is characterized in that, also including that flying dust discharges subsystem (190), this subsystem includes ash bucket (193), fly ash carry equipment (195) and ash storehouse (194)；Ash bucket (193) is connected to the flying dust that the bottom of spraying reaction tower (115) and/or one-level cloth bag reactor (122) is respectively used to trapping and storage spraying reaction tower (115) and/or one-level cloth bag reactor (122) is discharged in turn；Flying dust that ash bucket (193) is collected, it is transported to ash storehouse (194) by fly ash carry equipment (195).
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| CN111167285A (en) * | 2020-01-07 | 2020-05-19 | 东莞市应天环保工程有限公司 | Flue gas purification system and method |
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