CN206709079U - The small-sized domestic garbage pyrolysis processing system of villages and small towns level - Google Patents

Abstract

It the utility model is related to technical field of waste treatment, and in particular to the small-sized domestic garbage pyrolysis processing system of villages and small towns level；Pyrolysis oven including being sequentially communicated setting, sulphur removal denitration spray column, cyclone dust collectors, dioxin removal column and circulating cooling water purification pond, a combustion room is provided with the pyrolysis oven, the one combustion room is also provided with and communicated with dual firing chamber, the one combustion interior is provided with Stirring and breaks bridge mechanism, the Stirring, which breaks bridge mechanism, to be included the width wheel of middle part setting and is arranged on the push rod that lower end can down move, the Stirring breaks and is provided with turnover plate type grate body below bridge mechanism, bipolar venturi jet aerator is provided with the dioxin removal column, the bipolar venturi jet aerator includes two bipolar Venturi tubes, the air compressor machine being connected with two bipolar Venturi tubes, pyrolytic incineration high-temperature flue gas pipeline and cooling water pipeline, the circulating cooling water purification pond connects with the top of dioxin removal column；The utility model can simplify rubbish pre-treating technology, reduce garbage disposal cost and equipment investment, while effectively remove dioxin.

Description

The small-sized domestic garbage pyrolysis processing system of villages and small towns level

Technical field

It the utility model is related to technical field of waste treatment, and in particular to the small-sized domestic garbage pyrolysis processing system of villages and small towns level System.

Background technology

The small-sized rubbish pyrolysis plant of current domestic market sales is broadly divided into high temperature pyrolysis, and (pyrolysis temperature is up to 550-- 700 DEG C) and low temperature pyrogenation (150-400 DEG C) process equipment.This two kind equipment was promoted since 2014 in China villages and towns in rural areas Use, can solve the problems, such as that residents in rural community local method is burned and cause serious secondary environmental pollution, solve remote rural garbage collect, The economy problems transport, focused on, and make rural garbage simply fill caused by soil, pollution of waterhead there is replacement to solve Scheme.From the point of view of the at village level refuse pyrolysis demonstration project operational effect that various regions small towns is completed, current refuse pyrolysis technology is set It is standby to make villages and small towns garbage decrement, innoxious to a certain extent, effectively treatment in situ it is local daily caused by rubbish, system Equipment pollution thing discharge aggregate level is also significantly better than local method and burns and simply fill, and its technical indicator also form upgrading Advantage.

But presently used villages and small towns level refuse pyrolysis equipment and the also non-mature of technology, there is many urgently to solve Technical barrier certainly：

(1) the fire grate machinery structure problem of pyrolysis oven

Seen various pyrolysis oven products are generally designed using rotary and dislocation type fire grate at present in market, this design Deficiency is：Clinker easily blocks fire grate (factor such as larger building waste, bottle, old metal rubbish, coking).Therefore, it is this The pyrolysis oven of design needs to increase the works such as rubbish pre-treating technology equipment, such as refuse breaking, metal magnetic separation, building waste screening Sequence, so as to add processing system equipment investment, garbage disposal expense, reduce the reliability and maintainability of system, shorten Equipment failure-free operation cycle.

(2) blanking of rubbish and crane span structure problem

Current vertical pyrolysis oven generally existing burner hearth rubbish blanking is not smooth and rubbish " crane span structure " problem；The main combustion of burner hearth be present Burn section rubbish heap and press through close, ventilation is obstructed, the not prosperous problem of the intensity of a fire.Trace it to its cause：First, burner hearth is the barrel-shaped design of cylinder, several Meter Shen burner hearth rubbish is layer upon layer of, is compacted lower section rubbish, and fed oxygen from air is difficult, causes burning not prosperous, or even dead fire, cigarette Gas upwards be also obstructed by circulation, interrupts pyrolysis energy circulation, pyrolytic reaction " dormancy "；Second, 250 DEG C or so above pyrolytic layer Rubbish melting layer be easily formed rubbish crane span structure and interrupt furnace combustion zone feed, operation is unstable, technological parameter drastically changes.It is existing Bridge still is broken by manpower in the method for more universal reply, that is, opens fire door and is disclosed with " make a fire rod ".

(3) scientific problem of dual firing chamber's structure

Uniformly " breathing " effect of pyrolysis oven dual firing chamber, can make pyrolysis gas and not completely burned off garbage decomposition combustion gas in dual firing chamber Completely burned simultaneously makes nuisance clean in dual firing chamber's pyrolytic.Due to dual firing chamber's Structure Designing Problem, some current pyrolysis Stove product can not make all inlet charges of dual firing chamber uniform, and gas residence time is more than two seconds, and combustion zone avoids " negative and positive " Stove phenomenon.The oxygen-excess combustion of dual firing chamber and reducing as far as possible for vapor, can effectively improve dual firing chamber's ignition temperature and pernicious gas Purifying rate, therefore the steam treatment technology in the oxygen-supplying technology of dual firing chamber, burner hearth is most important.

(4) pyrolysis oven flue gas emission dioxin removes problem up to standard

Villages and small towns level small-sized rubbish pyrolysis plant not yet finds the technical method that economy removes dioxin qualified discharge at present. Pyrolysis either can not all make fume emission stably reaching standard (GB18484-2014 using bag-type dust or electric precipitation《House refuse Burn contamination control standard》).A large amount of tar caused by low temperature pyrogenation meeting, prevent it from using sack cleaner；And removed using electricity Dirt device can not remove carbon monoxide and dioxin and tar cleaning is difficult；High temperature pyrolysis is using sack cleaner (to tar and water Vapour " allergy ", easily block, it is impossible to stable operation).Therefore, existing small-sized rubbish pyrolytic process and equipment make garbage disposal cost and Energy consumption is too high, beyond the economic bearing in rural area under China at this stage development level.

Utility model content

The utility model is in order to solve above-mentioned existing technical disadvantages, there is provided at a kind of small-sized domestic garbage pyrolysis of villages and small towns level The new design of reason system.

To achieve the above object, the utility model provides the small-sized domestic garbage pyrolysis processing system of villages and small towns level, including successively Connect pyrolysis oven, sulphur removal denitration spray column, cyclone dust collectors, dioxin removal column and the circulating cooling water purification pond set, institute State and a combustion room is provided with pyrolysis oven, the combustion room is also provided with and communicated with dual firing chamber, and the combustion interior is provided with rotation and stirred Bridge mechanism is mixed brokenly, the Stirring, which breaks bridge mechanism, to be included the width wheel of middle part setting and be arranged on the top that lower end can down move Bar, the Stirring break and turnover plate type grate body are provided with below bridge mechanism, and the venturi hot blast oxygen supplying tube passes through a combustion The Venturi tube of room oxygen supplying tube bypass is sucked and dried a large amount of steam that floor evaporates and by steam from turnover plate type grate body Gap and air holes be sent into a combustion room, steam is reduced into CO after being contacted in the top of turnover plate type grate body with red-hot carbon particle +H₂、CO₂+H₂And methane gas, bipolar venturi jet aerator, the bipolar venturi are provided with the dioxin removal column Jet aerator includes two bipolar Venturi tubes, the air compressor machine being connected with two bipolar Venturi tubes, pyrolytic incineration high temperature cigarette Feed channel and cooling water pipeline, the circulating cooling water purification pond connect with the top of dioxin removal column.

The utility model has the advantages that：

1st, the utility model sets turnover plate type grate body, is advantageous to the larger coking block of slag removal, building waste, glass Glass bottle, old metal slag etc. so that burner hearth will not block；Rubbish pre-treating technology can be simplified simultaneously, reduce garbage disposal cost And equipment investment.

2nd, Stirring is set to break bridge mechanism, the width wheel that its middle part is set can both share the weight of the full load garbage half of burner hearth Amount, can stir rubbish again makes rubbish not hardened, bull pine, good permeability, while push rod can abolish rubbish crane span structure, while the mechanism The full stove rubbish of stirring, which can also be played, makes its equally distributed effect.

3rd, annular dual firing chamber's baffling passage in the utility model in dual firing chamber has turbulent flow and cyclonic action, is advantageous to oxygen Gas is sufficiently mixed burning and the effect of spiral depositing dust with combustion gas.

4th, the setting of the utility model dioxin removal column can suppress dioxin regeneration " resurrection ", and two evils are removed so as to reach The purpose of English.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid Put, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the small-sized domestic garbage pyrolysis processing system general assembly drawing of the utility model villages and small towns level；

Fig. 2 is the utility model pyrolysis oven structural representation；

Fig. 3 is along F-F to structural representation in Fig. 2；

Fig. 4 is along K-K to cross-sectional view in Fig. 2；

Fig. 5 is dual firing chamber's structural representation；

Fig. 6 is turnover plate type grate body top view；

Fig. 7 is first layer combustor section face schematic diagram in the utility model dual firing chamber；

Fig. 8 is bipolar venturi jet aerator mplifying structure schematic diagram in Fig. 1；

Fig. 9 be along Fig. 2 C-C to venturi hot blast oxygen supplying tube schematic cross-section；

Figure 10 be along Fig. 2 D-D to dual firing chamber's schematic cross-section.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belong to the scope of the utility model protection.

Referring to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10, the utility model provides villages and small towns The small-sized domestic garbage pyrolysis processing system of level, including it is sequentially communicated the pyrolysis oven 3 of setting, sulphur removal denitration spray column 7, cyclone dust removal Device 9, dioxin removal column 13 and circulating cooling water purification pond 18, a combustion room 31, the combustion room are provided with the pyrolysis oven 31 are also provided with and communicated with dual firing chamber 4, and being provided with Stirring in the combustion room 31 breaks bridge mechanism 2, and the Stirring breaks bridge Mechanism 2 includes the width wheel 201 that middle part is set and breaks bridge machine with the reciprocating push rod 202 in lower end, the Stirring is arranged on Turnover plate type grate body 5 is provided with below structure, bipolar venturi jet aerator 15 is provided with the dioxin removal column 13, The air compressor machine that the bipolar venturi jet aerator 15 includes two Venturi tubes 11, is connected with two bipolar Venturi tubes 11 132nd, the top of pyrolytic incineration high-temperature flue gas pipeline 151 and the , bioxin removal columns of cooling water pipeline 152 is provided with heat exchanger cooling Device 14.Gas is pumped into Venturi tube by second level cyclone dust collectors by air-introduced machine 10, and the bottom of dioxin removal column 13 also connects Sludge self priming pump 17 is connected to, the circulating cooling water purification pond connects with the top of dioxin removal column.

Operation principle of the present utility model is：Rubbish is lifted to the charger for being arranged on pyrolysis furnace upper end by elevator Structure 1, then rubbish is sent into pyrolysis oven by feeding mechanism 1, refuse pyrolysis process：First stage is the pyrolytic gasification of anaerobic condition And oxy combustion, in an indoor progress of combustion of pyrolysis oven, the combustion room combustor 25 of control one makes burning work temperature control in 700- 900 DEG C or so, pyrolysis temperature is controlled in 600-750 DEG C of scope, makes nonvolatile combustible completely burned in rubbish, and flammable An escaping gas part then enter dual firing chamber in the combustion room another part that burns, while calory burning is communicated up, and makes combustion Burn layer above rubbish and pyrolytic gasification occurs, caused pyrolysis gas enters dual firing chamber；Second stage is oxygen-excess combustion, in dual firing chamber Carry out, operating temperature is controlled at 850-1100 DEG C, and fuel gas and primary combustion are uncombusted caused by abundant combustion refuse pyrolysis Combustible, this process needs to introduce garbage pool fuel gas, supplied oxygen plus hot blast, ensures that whole dual firing chamber is in peroxide State, high-temperature flue gas residence time are more than the 3-4 seconds, can be fully oxidized by organic matter in pyrolysis gas, discarded object, and harmful substance is thorough Bottom is decomposed, and farthest controls the generation of secondary pollution, removes poisonous, pernicious gas and micro- solid thing particularly bioxin, most Whole flue gas is discharged in air by chimney 12；Phase III is handled for gas cleaning, and the high-temperature flue gas of pyrolysis oven discharge enters System flue gas purifying equipment does purified treatment.First, first stop carries out sulphur removal denitration process, and the technique is gas shower alkali cleaning work Skill, the buck of spray can be recycled through water process.Water-washing process is also flue gas cool-down process, the spray column lower floor gas approach Position implants air heat exchanger, and the air themperature by heat exchanger can be promoted to 300 DEG C or so, and the hot blast after heating is straight Connect and supply oxygen source of the gas as pyrolysis oven.Second station is cyclone dust removal, by two stage cyclone dedusting flue gas can be made further to slough burning Flying dust, carbon particle, metal oxide dust.3rd station is dioxin and removal of heavy metal ions tower, at cyclone dust removal The flue gas of reason, controlled to this link temperature at 550 DEG C, by the dioxin component of dual firing chamber's pyrolytic, in follow-up 350- 400 DEG C of temperature ranges, which stop more than 8 seconds times, can recombine dioxin, therefore the present apparatus will accomplish the flue gas chilling that makes entrance (be cooled to less than 300 DEG C times less than 8 seconds) avoids recombining for dioxin.The present apparatus uses water as cooling medium, Power 500 DEG C of flue gases of suction are done with high-energy compaction air by two level Venturi tube and normal temperature, water at atmospheric pressure, mixed aeration reach cigarette Gas quenching effect, so as to reduce the generation of dioxin, while with water heavy-metal ion removal and other dust, finally reach flue gas Mark discharge.The cooling water that this link uses has to pass through sewage disposal recycling, and its sewage treatment process is：Deoil+ Precipitation+coagulation+sand filtration+one-level cooling+micro-filtration film process+two level cooling, the sludge periodically specially treated such as removing.

In the utility model, pyrolysis body of heater is vertical, comprehensive integration：Garbage feeding mechanism, high temperature resistant refractory brick and fire resisting Casting material is compound to build burner hearth, fluid pressure type turnover panel grate body, triple channel Zigzag type integration delay high-temp combustion dual firing chamber, rotation by laying bricks or stones Turn the broken bridge mechanism of stirring, rubbish evaporation steam venturi aspirating mechanism, secondary combustion chamber's wind sector.It is tight to be pyrolyzed Proper Design Gather, pattern shows unique characteristics, the particular topology of each functional entity, comprehensive to mix together manufacture, transport, operation, the manufacturability safeguarded, economy Property, the Consideration such as convenience, the technological innovation scheme proposed aiming at the above-mentioned common fault of current small-sized pyrolysis oven.

Set Stirring to break bridge mechanism in pyrolysis oven, can send the rubbish evenly drying in burner hearth and orderly sinking Material.In order to avoid waste density is excessive in stove, Stirring breaks bridge mechanism band spoked wheel, and width wheel is actually by rubbish in burner hearth point Into upper and lower two parts, garbage weight thereon is on the one hand shared, mitigates lower furnace portion rubbish pressure, rubbish is stirred again, pushes rubbish Rubbish, so as to improve the ventilation condition of rubbish and the mechanical forces of rubbish crane span structure and coking are abolished in generation；Vertical furnace chamber is avoided to be filled Whole garbage weights concentrate and act on fire grate garbage areas nearby, cause lower floor's rubbish airtight, influence the combustion of lower floor rubbish Burn and be pyrolyzed efficiency, it is necessary to share whole garbage weights that lower floor's rubbish is born, apolegamy and adjustment refuse pyrolysis are adapted to saturating Gas, so as to improve the pyrolytic process parameter of rubbish and combustibility.Therefore, crushed under the rotary type garbage stirring of this patent design The width wheel assembled in the middle part of bridge mechanism and mechanism can both share the weight of the full load garbage half of burner hearth, and can stir rubbish again makes rubbish It is not hardened, bull pine, good permeability.Lower section rubbish is both rotatably stirred with the coaxial mounted push rod of mechanism axis sleeve pipe, again may be used Rubbish is pressed downward under the thrust of top hydraulic cylinder piston, reaches the purpose for abolishing rubbish crane span structure, while the mechanism is also The full stove rubbish of stirring, which can be played, makes its equally distributed effect.Pyrolysis furnace bottom is provided with ash bucket 19 and venturi hot blast oxygen supplying tube 6,

Turnover panel grate body is fluid pressure type structure, and it is arranged on lower furnace portion, completely burned section end, the turnover plate type stove Row mechanism one end is provided with and communicated with fire grate cooling ajutage 26, and the turnover plate type grate body includes hydraulic piston 51, linkage connects Bar 52, stainless rotating steel shaft 53 and cast iron turnover panel 54, the hydraulic piston are connected with linkage connecting rod, the linkage connecting rod and stainless steel Axis of rotation connects, and the cast iron turnover panel is hinged and is threadedly coupled with stainless rotating steel shaft.Fire grate opening degree, can up to 0-120 degree ±60⁰Rocking action, be advantageous to the larger coking block of slag removal, building waste, glass wine bottle, old metal slag etc. so that stove Thorax will not block.It can also ensure that fire grate temperature is less than material temperature by air cooling system, maintain the mechanical strength of fire grate.Heat Solving pressure fan and air-introduced machine in stove running, by frequency control, air quantity adjusting range can ensure that the air quantity of pyrolytic incineration needs Ask, and can ensures that system is in negative pressure state, and back-fire, does not avoid flue gas from escaping.Therefore, before turnover panel grate body can simplify rubbish Handling process.The fire grate performance is better than dislocation type and rotary grate, can reduce garbage disposal cost and equipment investment.Its is air-cooled Cooling body can both reduce fire grate operating temperature, and can cool down wind by multi-angle again improves oxygen supply condition around fire grate, helps one Fire the burning of room good ventilation.

Pyrolysis oven bottom is provided with peep hole 302, fire door 303, and burner hearth one fires section 304, is divided into from top to bottom in pyrolysis oven Drying layer 21, pyrolytic gasification layer 22, burning zone 23 and burning layer 24, the Stirring break bridge mechanism and are arranged on burning zone and heat Gasification layer is solved, the turnover plate type grate body is arranged on burning zone lower end, and the burning layer ash bucket is communicated with the confession of venturi hot blast Oxygen pipe 6.The drying garbage layer of pyrolysis oven upper furnace can evaporate a large amount of steam, and steam, which flows downward, can reduce pyrolysis section (gasification Layer) and dual firing chamber's operating temperature, influence to determine the programming rate characteristic curve of pyrolysis generation product component, cause tar in flue gas Content increase, is unfavorable for system gas cleaning.Therefore this patent design venturi aspirating mechanism, utilizes the oxygen supply of body of heater burning layer Pipe aerodynamic energy suction upper furnace steam and from fire grate gap be sent into one combustion room, steam above fire grate with red-hot carbon Grain contact, is reduced into CO+H₂And CO₂+H₂And methane gas, at this moment the water produced vapour of rubbish transforms into water-gas and high heating value fires Gas, various thermal chemical reactions above and below burner hearth are made to reach dynamic equilibrium and be carried out continuously, so as to dissolve steam to pyrolytic process Detrimental effect.

The dual firing chamber and pyrolysis oven furnace integrated setting, the dual firing chamber include three independent units, each unit Including first layer combustion chamber 41 and second layer combustion chamber 42, the first layer combustion chamber includes connecting set first with a combustion room Air inlet 43, the second layer combustion chamber include the second air inlet 44 and outlet flue 45 set with first layer combustion chamber, Pyrolysis oven is additionally provided with pyrolysis gas appendix 27.Dual firing chamber 4 is also associated with dual firing chamber's combustor 27 and dual firing chamber's burning frame 28, First air inlet and the second air inlet non-corresponding stagger setting, such gas can form the type of flow of annular in dual firing chamber.Institute State first layer combustion chamber and the second combustion chamber and be provided with dual firing chamber's oxygen supplying tube 200, ensure that combustible gas can peroxide combustion in dual firing chamber Burn.The layout of dual firing chamber use with burner hearth integral structure, be so advantageous to thermal balance.In order that burner hearth interior air-flow and temperature are equal Weighing apparatus, avoid hearth combustion and be pyrolyzed unilateral progress, " negative and positive " imbalance occur, dual firing chamber is designed as three independent lists by this patent Member.Dual firing chamber's baffle pipe 301 is provided with dual firing chamber, each unit uses deflector type two-layer structure so that dual firing chamber's gas combustion Burn center path length and reach 240 degree of arc length, its section and length can ensure burning delay up to more than four seconds.Dual firing chamber is provided with Upper and lower two layers of oxygen supplying tube, ensure combustible gas energy oxygen-excess combustion.For pyrolytic harmful substance, first layer combustion chamber is also equipped with temperature Sensor (not shown) and combustor 27 are spent, when dual firing chamber's ignition temperature is less than 850 DEG C, system automatic control combustion machine work Make, so that dual firing chamber's ignition temperature control is in 850--1100 DEG C of scope.Ensure that dual firing chamber's operating temperature maintains 850-1100 DEG C scope, each dual firing chamber front portion is additionally provided with combustor and is provided with temperature measuring equipment and temperature sensor in dual firing chamber stage casing.Annular Dual firing chamber's baffling passage also has turbulent flow and cyclonic action, is advantageous to oxygen and is sufficiently mixed burning and spiral depositing dust work with combustion gas With.

The basic theories that the utility model recombines according to dioxin, new technological process and equipment are researched and developed, is solved Technical problem be flue gas chilling is avoided the environmental condition that dioxin is lived again, so as to reach suppress its regenerate " resurrection " mesh 's.Water is a kind of higher excellent cooling medium of thermal capacity, and it is contacted with high-temperature flue gas, can be absorbed quickly hot contained by flue gas Amount, but such as flue gas bubble is excessive, and contact angle is too small, and flue gas will depart from the water surface, the flue gas exchange rate of bubble center rapidly It will lag.Rapidly cooled down so to reach, it is necessary to make in water that flue gas bubble is small, contact angle is larger, can be only achieved rapidly cold But effect.This patent selection jet Aeration Technology and It can reach the abundant contact heat-exchanging requirement of flue gas microvesicle and water.This patent is this Bipolar venturi jet aerator is developed, it can be solved, and flue gas pressures are low, kinetic energy is insufficient, are not easy to meet jet-flow aeration work bar The problem of part.

Include in the bipolar Venturi tube and the extremely other pipe of first set is connected with pyrolytic incineration high-temperature flue gas pipeline 151 153rd, the first order venturi mixing tube 157 that is set with the first extremely other connection of pipe 153, it is connected with first order venturi mixing tube Draw water other pipe 158, and the other pipe 158 that draws water is provided with and communicated with second level venturi mixing tube 154, and the second level venturi mixes Close pipe 154 and be connected with jet aerator anemostat 156, the second level venturi mixing tube 154 and jet aerator anemostat 156 the second pole jet pumps 155 of composition, the air compressor machine 132 provide high energy air to bipolar Venturi tube 11 and are used as power source of the gas, institute State the in bipolar Venturi tube first extremely other pipe and produce negative pressure absorbing high-temperature flue gas, high-temperature flue gas is entered double by high energy air pressurized canister The second level jet pump of pole Venturi tube simultaneously sucks cooling water in second level jet pump by cooling water pipeline, is then penetrated in two level Stream aerator mixing tube realize mixing wastewater with air and anemostat slow down be pressurized, eventually form micro-bubble make flue gas in water drastically Diffused aeration drastically cooling down, so that bioxin loses the temperature conditionss recombined.Bipolar venturi jet aerator Operation principle：High energy air is provided with air compressor machine and does power gas source, draws high-temperature flue gas and hybrid cooling in the first order, then Flue gas pours into second level jet pump by high energy air pressurization and sucks cooling water in the second level, then expands in secondary jets aerator Separate tube realizes that mixing wastewater with air slows down supercharging, eventually forms micro-bubble diffused aeration drastically cooling down in water so that flue gas Quickly land vertically by 350 DEG C of warm areas from 550 DEG C and be less than 2 second time to less than 250 DEG C discharges, whole process.Water is also good Solvent, the flying dust in flue gas, carbon granules, metal oxide dust can be made to be compiled in water, so as to reach gas cleaning purpose.It is described to remove The bottom of sulphur denitration spray column 7 is provided with air heat exchanger 71, and the air heat exchanger 71 connects with the outlet flue of dual firing chamber 4, institute State the lower end of sulphur removal denitration spray column 7 and be also associated with water circulation tank 8.

Cooling water purification processing technological flow in circulating cooling water purification pond：Deoil+precipitate+coagulation+sand filtration+cooling+dirt Mud processing, quick refrigeration can separate out condensation oiliness particulate or oiliness emulsion in flue gas in water, therefore set grease removal tank 181；If the precipitation process flying dust of sedimentation basin 182 and carbon granules.If coagulating basin 183 is heavy metal oxidation contained by the flue gas retained in water Thing and metal ion are made to be used as precipitation purification processing by chemical coagulation.Sand filter 184 is used as cooling water advanced treating link, enters Residual impurity in one step filter water.Refrigerating work procedure is that the last cooling tower of cooling water purification flow strengthens air-cooled, cooling water in fact The design of quantity of circulating water ensure that cooling water circulates the hydraulic detention time up to 120 minutes in purified treatment pond.Therefore enter cold But the water temperature of tower (being located at the top of dioxin removing means) is not over 100 DEG C.Cooling water purification pond sludge periodically uses sludge pump Innoxious specially treated is done in extraction.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in Protection domain within.

Claims (7)

1. the small-sized domestic garbage pyrolysis processing system of villages and small towns level, it is characterised in that：Pyrolysis oven, sulphur removal including being sequentially communicated setting Denitration spray column, cyclone dust collectors, dioxin removal column and circulating cooling water purification pond, a combustion is provided with the pyrolysis oven Room, the combustion room are also provided with and communicated with dual firing chamber, and the combustion interior is provided with Stirring and breaks bridge mechanism, and the rotation is stirred Mixing brokenly bridge mechanism includes the width wheel of middle part setting and is arranged on the push rod that lower end can down move, and the Stirring breaks bridge mechanism Lower section is provided with turnover plate type grate body, and bipolar venturi jet aerator is provided with the dioxin removal column, described double Pole venturi jet aerator burns including two bipolar Venturi tubes, the air compressor machine being connected with two bipolar Venturi tubes, pyrolysis Burn high-temperature flue gas pipeline and cooling water pipeline, the circulating cooling water purification pond connect with the top of dioxin removal column.

2. the small-sized domestic garbage pyrolysis processing system of villages and small towns level according to claim 1, it is characterised in that：In the pyrolysis oven It is divided into drying layer, pyrolytic gasification layer, burning zone and burning layer from top to bottom, the Stirring breaks bridge mechanism and is arranged on burning zone The pyrolytic gasification layer on top, the turnover plate type grate body are arranged on burning zone lower end, set below the turnover plate type grate body Ash bucket is equipped with, the ash bucket is communicated with the pyrolysis gas on the combustion of suction one room drying layer top and the venturi hot blast oxygen supplying tube of steam, The width wheel that the Stirring is broken in bridge mechanism is coaxially disposed with push rod.

3. the small-sized domestic garbage pyrolysis processing system of villages and small towns level according to claim 2, it is characterised in that：The venturi heat Wind oxygen supplying tube is sucked and dried a large amount of steam that floor evaporates and by steam from turnover panel by the Venturi tube of a combustion room bypass The gap of formula grate body and air holes are sent into a combustion room.

4. the small-sized domestic garbage pyrolysis processing system of villages and small towns level according to claim 1, it is characterised in that：The turnover plate type stove Arranging mechanism includes hydraulic piston, linkage connecting rod, stainless rotating steel shaft and cast iron turnover panel, and the hydraulic piston is connected with linkage connecting rod, The linkage connecting rod is hinged with stainless steel roller pin key connection, the cast iron turnover panel with stainless rotating steel shaft, the cast iron turnover panel Opening degree is 0-120 degree, and its angle that can vacillate now to the left, now to the right is 60 degree.

5. level small-sized domestic garbage pyrolysis processing system in villages and small towns according to claim 1 or claim 2, it is characterised in that：The turnover panel Formula grate body one end is provided with and communicated with fire grate cooling ajutage, and the fire grate cooling ajutage can carry to turnover plate type grate body Cooling but wind.

6. the small-sized domestic garbage pyrolysis processing system of villages and small towns level according to claim 1, it is characterised in that：The dual firing chamber with Pyrolysis oven furnace integrated setting, the dual firing chamber include three independent units, and each unit includes first layer combustion chamber and the Two layers of combustion chamber, the first layer combustion chamber include connecting the first air inlet set, the second layer combustion chamber with a combustion room Including the second air inlet set with first layer combustion chamber, the second layer combustion chamber is provided with outlet flue；The sulphur removal Denitration spray column bottom is provided with air heat exchanger, and the air heat exchanger connects with the outlet flue of dual firing chamber, the first layer Combustion chamber and the second combustion chamber form deflector type two-layer structure, and the first layer combustion chamber and the second combustion chamber are provided with two combustions Room oxygen supplying tube.

7. the small-sized domestic garbage pyrolysis processing system of villages and small towns level according to claim 1, it is characterised in that：The bipolar literary mound In include in pipe the extremely other pipe of first set be connected with pyrolytic incineration high-temperature flue gas pipeline, connects setting with the first extremely other pipe First order venturi mixing tube, the other pipe that draws water being connected with first order venturi mixing tube, the other pipe that draws water are provided with and communicated with Second level venturi mixing tube, the second level venturi mixing tube are connected with jet aerator anemostat, the second level text Mixing tube forms the second pole jet pump with jet aerator anemostat in mound, and the air compressor machine provides high energy to bipolar Venturi tube Air is used as power source of the gas, and the extremely other pipe of first in the bipolar Venturi tube produces negative pressure absorbing high-temperature flue gas, high-temperature flue gas quilt High energy air pressurized canister enters the second level jet pump of bipolar Venturi tube and sucked in second level jet pump by cooling water pipeline Cooling water, then realize mixing wastewater with air in secondary jets aerator mixing tube and be pressurized in anemostat deceleration, eventually formed small Bubble makes flue gas drastically diffused aeration drastically cooling down in water, so that bioxin loses the temperature conditionss recombined.