CN106705062A - Processing technique and device applied to secondary combustion chamber of household waste pyrolysis furnace - Google Patents
Processing technique and device applied to secondary combustion chamber of household waste pyrolysis furnace Download PDFInfo
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- CN106705062A CN106705062A CN201710044585.0A CN201710044585A CN106705062A CN 106705062 A CN106705062 A CN 106705062A CN 201710044585 A CN201710044585 A CN 201710044585A CN 106705062 A CN106705062 A CN 106705062A
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- depositing dust
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 100
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 83
- 238000012545 processing Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000010791 domestic waste Substances 0.000 title abstract 5
- 239000000428 dust Substances 0.000 claims abstract description 79
- 238000000746 purification Methods 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 98
- 238000000151 deposition Methods 0.000 claims description 75
- 230000009977 dual effect Effects 0.000 claims description 58
- 238000010304 firing Methods 0.000 claims description 58
- 238000012544 monitoring process Methods 0.000 claims description 20
- 239000003500 flue dust Substances 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 5
- 238000005299 abrasion Methods 0.000 claims description 4
- 239000000567 combustion gas Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 244000144985 peep Species 0.000 claims description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 238000002309 gasification Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 231100000614 poison Toxicity 0.000 description 3
- 230000007096 poisonous effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
- F23G5/0276—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage using direct heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Incineration Of Waste (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
The invention discloses a processing technique and device applied to a secondary combustion chamber of a household waste pyrolyzsis furnace. The processing technique comprises the following steps that (1) combustible pyrolysis gas generated by the pyrolysis furnace is guided into a deep combustion area and sufficiently mixed and burned with secondary air; and (2) high temperature exhaust gas generated through combustion of the deep combustion area is guided into a baffling dust-falling area and conveyed from bottom to top, and the high temperature exhaust gas is subjected to multi-stage dust falling and baffling in the baffling dust-falling area and exhausted from the upper portion of the baffling dust-falling area and fed into a exhaust gas purification system. The processing device comprises the deep combustion area and the baffling dust-falling area, wherein the bottoms of the deep combustion area and the baffling dust-falling area communicates mutually; an air inlet is formed in the deep combustion area, and an annular air outlet pipe is installed in the baffling dust-falling area; and the processing device further comprises an ash collection hopper and an ash outlet. The processing technique and device applied to the secondary combustion chamber of the household waste pyrolysis furnace has the advantages that operation of the system is easy, controllability of the process is high, pyrolysis efficiency is high, secondary combustion is sufficient, baffling and dust falling are efficient, the concentration of pollutants is low, the discharge amount of the exhaust gas is small, and investment and operation cost are low; and the processing technique and device applied to the secondary combustion chamber of the household waste pyrolysis furnace can be widely applied to the field of city household waste pyrolysis treatment
Description
Technical field
The present invention relates to domestic garbage pyrolysis gasification, and combustion process field, specifically one kind is applied to domestic garbage pyrolysis stove
Dual firing chamber's handling process and processing unit.
Background technology
In recent years, it is raw with the reinforcement and the successive appearance of increasingly strict national environmental protection regulation and policy of environmental consciousness
The basic principle that " innoxious, minimizing and the resource " of refuse disposal living has been followed as various countries, refuse pyrolysis technology conduct
One of effective way of this principle is realized, industry has gradually been obtained and has been generally acknowledged.The core of refuse pyrolysis technology is pyrolysis oven, its
Structure mainly includes pyrolysis gasification furnace and dual firing chamber.House refuse produces low molecule fuel gas through pyrolysis gasification furnace, and passes through
Rational gas operated device carries out deep combustion into dual firing chamber, and two above processing step should be distinguished strictly, independent operating, and
Auxiliary, combination is helped each other, finally realize the integrated high integration of pyrolytic gasification and burning purification process.
The structure of existing domestic garbage pyrolysis stove is broadly divided into two types, and a class uses vertical coaxial tube-in-tube structure, i.e.,
Constituted by vertical pyrolytic gasification burner hearth and around the ring-type secondary combustion chamber cavity of its surrounding, house refuse is through pyrolytic gasification burner hearth
It is pyrolyzed air guide channel of the combustible gas for producing by being arranged on hearth wall to enter in dual firing chamber's cavity, is laid on dual firing chamber's cavity
Burner and Secondary Air feed system, pyrolysis gas burn and qualified discharge after the final purification through exhaust treatment system in cavity,
The structure has the advantages that taking up an area province, the easy to operate, combustion heat utilizes direct, but pyrolysis furnace temperature can be with dual firing chamber burner
Condition changes and fluctuates, and pyrolytic process temperature-controllable is poor, and the structure is more complicated, and Maintenance and Repair are difficult；It is another kind of to use vertical
Formula or horizontal Split type structure, pyrolysis gasification furnace and dual firing chamber are divided into two independent construction units, and the two is connected by guide pipeline
It is logical, the structure have simple structure, temperature control it is accurate, it is easy to maintenance the features such as, but it is relatively low to there is also the larger, utilization rate of waste heat of occupation of land
Deng not enough.Additionally, also there is following common problem in the domestic garbage pyrolysis stove that two classes are commonly used at present above：1. pyrolytic gasification
Furnace structure design is not reasonable, and such as charging cloth is uneven, the oxygen supply of cloth wind is not enough, fire grate easily stifled easily card and gas collection air guide is unequal,
Directly affect pyrolytic gasification efficiency and successive depths combustion efficiency；2. dual firing chamber's internal structure has to be optimized, is primarily present following
Some problem：One is that combustion zone is lumped together with baffling depositing dust area, it is impossible to combustion process and baffling depositing dust process are carried out respectively
Precise control, and then effective control of the poisonous and harmful substances such as Dui bioxin and metallic dust can not be realized；Two is that combustion zone sets
Meter is not reasonable, and because pyrolysis gas enter dual firing chamber's moment through guide pipeline, combustion zone is excessively amplified suddenly so that pyrolysis gas
Concentration dilution is too low, and speed also declines rapidly, causes pyrolysis gas to mix inequality with combustion-supporting Secondary Air, and burning is solution not enough fully
Certainly this problem, general at present to carry out auxiliary combustion using increasing Secondary Air air quantity or supplement fuel, thus brings operating cost
With the increase of exhaust emissions amount；Three is simple gas collection gas directing system and baffling dust fall structure, the gas collection of pyrolysis gas, air guide position and
It is improper that airintake direction is set so that pyrolysis gas are uneven with the mixing of Secondary Air, influence efficiency of combustion, meanwhile, baffling depositing dust area
Structure is excessively simple, it is impossible to ensure effective residence time and the dust-laying effect of flue gas, and the effect for suppressing bioxin synthesis is poor, no
Generation and the emission problem of the secondary pollutions such as bioxin and heavy metal can thoroughly be solved.
The content of the invention
The technical problems to be solved by the invention are to provide and a kind of are applied to science and engineering at the dual firing chamber of domestic garbage pyrolysis stove
Skill and processing unit, by deep combustion area and baffling depositing dust area using independent operating, fundamentally suppress the product of bioxin
It is raw, secondary pollution and exhaust emissions amount are effectively controlled, mitigate the burden of exhaust treatment system, so as to reduce equipment investment and fortune
Dimension cost, realizes the innoxious and minimizing treatment of application of city life garbage.
The present invention solves above-mentioned technical problem with following technical scheme：
Invention one, is applied to dual firing chamber's handling process of domestic garbage pyrolysis stove, and it includes following operating procedure：
1) combustible pyrolysis' conductance that pyrolysis oven is produced is entered to be located at the deep combustion area top in dual firing chamber centre, it is flammable
Pyrolysis gas are sufficiently mixed with the Secondary Air for entering deep combustion area, burn from top to bottom by deep combustion area；
2) high-temperature tail gas that the burning of deep combustion area is produced out are imported from the bottom in deep combustion area and is located at depth combustion
The baffling depositing dust area outside area is burnt, and is conveyed from lower to upper, high-temperature tail gas are in baffling depositing dust area after multistage depositing dust and baffling
Discharged from baffling depositing dust area top and send into exhaust gas purification system.
Invention two, is applied to dual firing chamber's processing unit of domestic garbage pyrolysis stove, and the device includes dual firing chamber's housing, two combustions
Deep combustion area and baffling depositing dust area are provided with room housing, deep combustion area is arranged on the centre of dual firing chamber's housing, baffling
Depositing dust area is located at the outside in deep combustion area, and deep combustion area is connected with the bottom in baffling depositing dust area；Deep combustion area it is upper
Portion is provided with the air inlet of tangential access, and the top in baffling depositing dust area is provided with exhaust collection and imports the annular of exhaust gas purification system
Escaping pipe；The bottom of dual firing chamber's housing is provided with the flue-dust retainer below deep combustion area and baffling depositing dust area, dual firing chamber's housing
Bottom be provided with ash hole.
The deep combustion area is circular straighttube shape, and its top closure, combustible pyrolysis' gas that pyrolysis oven is produced passes through air inlet
Mouth is imported in deep combustion area, and deep combustion area is provided with multiple Secondary Airs supply mouths and multiple burners, deep combustion area
Bottom is provided with horn-like gas outlet.
The air inlet on deep combustion area top is provided with pyrolysis gas monitoring holes, and gas prison is provided with pyrolysis gas monitoring holes
Survey device, the internal diameter of the bore less than deep combustion area of air inlet.
The baffling depositing dust area is the cavity area between deep combustion area and dual firing chamber's inner walls, in baffling depositing dust area
The annular air outlet in portion is provided with tail gas monitoring holes, and gas controlling device is provided with tail gas monitoring holes, in deep combustion area under
Portion is provided with baffling guide table and depositing dust flower orifice plate, and baffling guide table is located at depositing dust flower orifice plate top, from deep combustion area out
High-temperature tail gas enter baffling depositing dust area through depositing dust flower orifice plate.
The baffling guide table is provided with multiple, and baffling guide table is oblique for the downward-sloping ring-type that Fire and abrasion resistant material is made
Platform, its gradient >=45 °.
Peep hole, combustion gas monitoring holes, compressed air soot-blowing pipe and access hole are installed on dual firing chamber's housing.
The fiery grid of gear is provided with the middle part of the flue-dust retainer.
The Secondary Air supply mouth and burner are arranged on to non-equidistant deep combustion area from top to bottom.
The present invention compared with prior art, has the advantages that：
1st, using deep combustion area in dual firing chamber and the independent operating in baffling depositing dust area, optimization gas collection gas directing system, two combustions
Cell structure and overall pyrolysis burning process, realize the substep precise control of deep combustion and baffling depositing dust process, fundamentally press down
The generation of bioxin processed；
2nd, deep combustion area feeds the optimization group of mouth and tubaeform gas outlet using tangential admission mouthful, non-equidistant Secondary Air
Close, reasonable in design, novelty while pyrolysis gas thoroughly burn, are reduced as far as Secondary Air consumption, effectively control pollution
Thing concentration and exhaust emissions amount, mitigate the burden of exhaust treatment system, reduce equipment investment and O＆M cost；
3rd, baffling depositing dust area spends orifice plate and the multistage depositing dust and baffling of baffling guide table to make by setting the fiery grid of gear, depositing dust
With, the metallic dust and other grits in high-temperature tail gas are efficiently removed, and when ensureing that high-temperature tail gas stop enough in dual firing chamber
Between, the synthesis condition of the poisonous and harmful secondary pollutions such as bioxin is fundamentally destroyed, realize the innoxious of application of city life garbage
Treatment.
4th, the present invention have that system operatio is easy, process control is strong, pyrolysis efficiency high, second-time burning fully, baffling drop
Dirt is efficient, pollutant concentration is low, exhaust emissions amount is small, investment and operating cost be the advantages of save, and can be widely applied to urban life
Refuse pyrolysis process field.
Brief description of the drawings
Fig. 1 is the schematic front view of dual firing chamber's processing unit that the present invention is applied to domestic garbage pyrolysis stove；
The schematic front view in Tu2Shi Tu1Zhong deep combustions area；
Fig. 3 is the schematic front view in baffling depositing dust area in Fig. 1；
Fig. 4 is the schematic top plan view of the fiery grid of gear in Fig. 3；
Fig. 5 is the schematic top plan view of depositing dust flower orifice plate in Fig. 3；
Fig. 6 is the schematic front view of depositing dust flower orifice plate in Fig. 3；
Fig. 7 is the schematic top plan view of baffling guide table in Fig. 3；
Fig. 8 is the schematic front view of baffling guide table in Fig. 3；
Fig. 9 is the schematic top plan view of annular escaping pipe in Fig. 3.
In figure：1- deep combustions area, 1-1 air inlets, 1-2 burning zones, 1-3 Secondary Airs supply mouth, 1-4 burners, 1-5 go out
Gas port, 1-6 pyrolysis gas monitoring holes, 2- baffling depositing dusts area, the fiery grid of 2-1 gears, 2-2 depositing dusts flower orifice plate, 2-3 bafflings guide table, 2-4
Combustion gas monitoring holes, 2-5 peep holes, 2-6 tail gas monitoring holes, 2-7 annulars escaping pipe, 2-8 compressed air soot-blowings pipe, 2-9 maintenance
Mouth, 2-10 flue-dust retainers, 2-11 ash holes, 3- dual firing chamber housing.
Specific embodiment
Technical solution of the present invention is further described below：
The present invention is applied to dual firing chamber's handling process of domestic garbage pyrolysis stove, specifically includes following operating procedure：
1) combustible pyrolysis' conductance that pyrolysis oven is produced is entered to be located at the deep combustion area top in dual firing chamber centre, it is flammable
Pyrolysis gas are sufficiently mixed with the Secondary Air for entering deep combustion area, burn from top to bottom by deep combustion area；
2) high-temperature tail gas that the burning of deep combustion area is produced out are imported from the bottom in deep combustion area and is located at depth combustion
The baffling depositing dust area outside area is burnt, and is conveyed from lower to upper, high-temperature tail gas are in baffling depositing dust area after multistage depositing dust and baffling
Discharged from baffling depositing dust area top and send into exhaust gas purification system.
Implement processing unit that above-mentioned handling process used as shown in Fig. 1-Fig. 9, for the sake of clarity, only show in figure
Meaning property represents the part in part related to the present invention, and figure with identical structure or function, only symbolically marks
One for being shown in which.
As shown in Fig. 1-Fig. 3, dual firing chamber's processing unit that the present invention is applied to domestic garbage pyrolysis stove includes cylindrical shape
Deep combustion area 1 and baffling depositing dust area 2, deep combustion area 1 and baffling depositing dust area are provided with dual firing chamber's housing 3, dual firing chamber's housing 3
2 separate units each other, carry out partition running.Deep combustion area 1 is arranged on the centre of dual firing chamber's housing 3, baffling depositing dust area 2
Positioned at the outside in deep combustion area, deep combustion area 1 communicates with the bottom in baffling depositing dust area 2；The top in deep combustion area 1 is provided with
The tangential air inlet 1-1 for accessing, the top in baffling depositing dust area 2 is provided with exhaust collection and imports the annular of exhaust gas purification system and go out
Tracheae 2-7；The bottom of dual firing chamber's housing is provided with the flue-dust retainer 2-10 below deep combustion area and baffling depositing dust area, dual firing chamber
The bottom of housing 3 is provided with ash hole 2-11.
As shown in Fig. 2 the rounded Straight structure in deep combustion area 1, its top closure, deep combustion area 1 is provided with
Air inlet 1-1, burning zone 1-2 and gas outlet 1-5, air inlet 1-1 and gas outlet 1-5 respectively positioned at burning zone 1-2 top and
Bottom, the combustible pyrolysis' gas produced by pyrolysis oven is imported in burning zone 1-2 by air inlet 1-1, and the bore of air inlet 1-1 is less than
The internal diameter in deep combustion area；Burning zone 1-2 is provided with multiple Secondary Air supply mouth 1-3 and multiple burner 1-4, non-from top to bottom
It is equally spaced；Gas outlet 1-5 is horn-like gas outlet, and high-temperature tail gas slow down through horn mouth moment expander, can lift depositing dust effect
Fruit simultaneously increases tail gas in the high temperature section residence time.
As shown in Fig. 2 the air inlet 1-1 uses angential admission mode, one end and the collection pyrolytic gasification of air inlet 1-1
The annular gas collector of combustible pyrolysis' gas that stove is produced is connected, and in the tangential screw-in depth combustion zone 1 of the other end, air inlet 1-1 sets
There is pyrolysis gas monitoring holes 1-6, gas controlling device is installed in pyrolysis gas monitoring holes 1-6, Monitoring Data includes the stream of pyrolysis gas
Amount, pressure, temperature and concentration, process above parameter are connected by transmission line with automatic control system respectively；The mouth of air inlet 1-1
Internal diameter of the footpath less than burning zone 1-2 sections.
As shown in figure 3, the baffling decanting zone 2 is the cavity zone between deep combustion area 1 and the inwall of dual firing chamber's housing 3
Domain, the annular air outlet 2-7 on the top of baffling depositing dust area 2 is provided with tail gas monitoring holes 2-6, and gas is provided with tail gas monitoring holes 2-6
Monitoring device, Monitoring Data includes flow, pressure, temperature and the concentration of pyrolysis gas, and process above parameter passes through transmission line respectively
It is connected with automatic control system；The middle and lower part in deep combustion area 2 is provided with baffling guide table 2-3 and depositing dust flower orifice plate 2-2, and baffling is led
Depositing dust flower orifice plate 2-2 tops are located to platform 2-3, folding is entered through depositing dust flower orifice plate 2-2 from the high-temperature tail gas out of deep combustion area 1
Stream depositing dust area 2.
The baffling guide table 2-3 is provided with multiple, the downward-sloping ring that baffling guide table is made for Fire and abrasion resistant material
Shape sloping platform, its gradient >=45 °.
Be provided with dual firing chamber's housing 3 peep hole 2-5, combustion gas monitoring holes 2-4, compressed air soot-blowing pipe 2-8 and
Access hole 2-9, compressed air soot-blowing pipe 2-8 are arranged on the top position of baffling guide table 2-3 and depositing dust flower orifice plate 2-2, can determine
Phase purges to its surface, and pre- accumulatingdust and blocking occur；Access hole 2-9 is arranged on middle part and the depositing dust flower of flue-dust retainer 2-10
The lower position of orifice plate 2-2.
As shown in Figure 3 and Figure 4, the fiery grid 2-1 of gear is provided with the middle part of the flue-dust retainer 2-10, the fiery grid 2-1 of gear is circular hole
Or the wear-resisting grid of square hole shape high-temperature flame-proof, positioned at deep combustion area 1 and the bottom in baffling depositing dust area 2, the circle on the fiery grid 2-1 of gear
Hole or square hole diameter can be designed and adjust according to actual conditions.
As shown in Figure 3, Figure 5 and Figure 6, the depositing dust flower orifice plate 2-2 is the annular steel plate of resistance to hot piercing, is fixedly installed in outlet
Between mouth 1-5 and the inwall of dual firing chamber's housing 3, the pore size of depositing dust flower orifice plate 2-2 thickness and punching can enter according to actual conditions
Row design and adjustment.
As shown in Fig. 3, Fig. 7 and Fig. 8, the downward-sloping (inclination that the baffling guide table 2-3 is made for Fire and abrasion resistant material
Degree >=45 °) ring-type sloping platform, be fixedly installed on the inwall of dual firing chamber's housing 3, foldover conductance is acted on to depositing dust.
As shown in Figure 3 and Figure 9, the annular escaping pipe 2-7 is surrounded on the upper case of dual firing chamber's housing 3, is collected by annular
Gas and gas-guiding structure, by by the high-temperature tail gas centralized collection after baffling depositing dust, and import exhaust gas purification system.
Dual firing chamber's processing unit operation principle that the present invention is applied to domestic garbage pyrolysis stove is as follows：
During operation, the combustible pyrolysis' gas produced through pyrolytic gasification by pyrolysis gasification furnace is first after annular gas collector is collected
The burning zone 1-2 for being imported in deep combustion area 1 by air inlet 1-1 again, and burning zone 1-2 is entered in tangential swirl mode, with
Increase pyrolysis gas turbulivity, promote pyrolysis gas to mix with the uniform of Secondary Air.Pyrolysis gas into burning zone 1-2 are mixed with Secondary Air
Close, due to burning zone 1-2 internal diameter slightly larger than air inlet 1-1 caliber, and Secondary Air feed mouth 1-3 in burning zone 1-2 from
Top to bottm uses non-isometric arrangement, is arranged to closer to air inlet one end closeer, and this kind of air inlet and cloth wind mode can
Pyrolysis gas concentration is avoided by Secondary Air excess dilution, can guarantee that the first half of the pyrolysis gas in burning zone 1-2 i.e. by a small amount of two again
Secondary wind uniformly mixes and fully burns, and is reduced as far as exhaust emissions amount, meanwhile, to prevent pyrolysis gas from being burnt just without thorough
Baffling depositing dust area is entered, burning zone 1-2 lower half is also provided with a small amount of Secondary Air supply mouth 1-3 and burner 1-4, and pyrolysis gas are through thorough
The high-temperature tail gas that bottom burning is produced enter baffling depositing dust area 2 by gas outlet 1-5, and high-temperature tail gas are through horn mouth gas outlet 1-5 winks
Between expander slow down, dust-laying effect can be lifted and increase tail gas in the high temperature section residence time.High-temperature tail gas lead in baffling depositing dust area 2
The fiery grid 2-1 of gear, the multistage depositing dust of depositing dust flower orifice plate 2-2 and baffling guide table 2-3 and baffling effect are crossed, is effectively removed therein
Metallic dust and other grits, and ensure high-temperature tail gas sufficient dwell time in dual firing chamber, fundamentally suppress bioxin etc.
The generation of poisonous and harmful secondary pollution, through the annular escaping pipe that the high-temperature tail gas after baffling depositing dust pass through dual firing chamber's housing upper
2-7 centralized collections, and import exhaust gas purification system.
During dual firing chamber's processing unit of the present invention is run, automatic control system by the flow of pyrolysis gas and high-temperature tail gas,
The data analyses such as pressure, temperature and pollutant concentration carry out auto-control, to be optimal operating condition, by the depth of dual firing chamber
Burning and baffling depositing dust process are organically combined with the pyrolytic gasification process of pyrolysis oven, realize the precise control to each process；For example,
When pyrolysis throughput is small, concentration is low, Secondary Air supply mouth and the burner of burning zone 1-2 lower half can be closed, only open combustion
Secondary Air supply and the burner of the section 1-2 first halves are burnt, system flexibility is high, effectively control combustion conditions and exhaust emissions amount,
Mitigate the treatment load of exhaust gas purification system, save operating cost.
Compared with prior art, with system operatio simplicity, process control is strong, be pyrolyzed efficiency high, secondary combustion for the present invention
Burning is fully, baffling depositing dust is efficient, pollutant concentration is low, exhaust emissions amount is small, put into operation low cost and other advantages, can be widely applied to city
Town domestic garbage pyrolysis process field.
The example of the above is only better embodiment of the invention, not for limiting implementation model of the invention
Enclose.It should be pointed out that due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for skill belonging to the present invention
For the those of ordinary skill in art field, on the premise of central scope of the present invention is not departed from, can also make and some simply push away
Drill or replace, be regarded as belonging to protection scope of the present invention.
Claims (9)
1. dual firing chamber's handling process of domestic garbage pyrolysis stove is applied to, it is characterised in that the handling process includes following operation
Step：
1) combustible pyrolysis' conductance that pyrolysis oven is produced is entered to be located at the deep combustion area top in dual firing chamber centre, combustible pyrolysis
Gas is sufficiently mixed with the Secondary Air for entering deep combustion area, burns from top to bottom by deep combustion area；
2) high-temperature tail gas that the burning of deep combustion area is produced out are imported from the bottom in deep combustion area and is located at deep combustion area
The baffling depositing dust area of outside, and convey from lower to upper, high-temperature tail gas are in baffling depositing dust area from folding after multistage depositing dust and baffling
Discharge and send into exhaust gas purification system in stream depositing dust area top.
2. dual firing chamber's processing unit of domestic garbage pyrolysis stove is applied to, it is characterised in that the device includes dual firing chamber's housing, two
Deep combustion area and baffling depositing dust area are provided with combustion room housing, deep combustion area is arranged on the centre of dual firing chamber's housing, rolled over
Stream depositing dust area is located at the outside in deep combustion area, and deep combustion area is connected with the bottom in baffling depositing dust area；Deep combustion area
Top is provided with the air inlet of tangential access, and the top in baffling depositing dust area is provided with exhaust collection and imports the ring of exhaust gas purification system
Shape escaping pipe；The bottom of dual firing chamber's housing is provided with the flue-dust retainer below deep combustion area and baffling depositing dust area, dual firing chamber's shell
The bottom of body is provided with ash hole.
3. dual firing chamber's processing unit of domestic garbage pyrolysis stove is applied to according to claim 2, it is characterised in that the depth
Degree combustion zone is circular straighttube shape, and its top closure, combustible pyrolysis' gas that pyrolysis oven is produced imports deep combustion by air inlet
In area, deep combustion area is provided with multiple Secondary Air supply mouths and multiple burners, and the bottom in deep combustion area is provided with horn-like
Gas outlet.
4. dual firing chamber's processing unit of domestic garbage pyrolysis stove is applied to according to Claims 2 or 3, it is characterised in that institute
The air inlet for stating deep combustion area top is provided with pyrolysis gas monitoring holes, and gas controlling device is provided with pyrolysis gas monitoring holes, enters
Internal diameter of the bore of gas port less than deep combustion area.
5. dual firing chamber's processing unit of domestic garbage pyrolysis stove is applied to according to Claims 2 or 3, it is characterised in that institute
It is the cavity area between deep combustion area and dual firing chamber's inner walls to state baffling depositing dust area, and the annular on baffling depositing dust area top goes out
Gas port is provided with tail gas monitoring holes, and gas controlling device is provided with tail gas monitoring holes, and the middle and lower part in deep combustion area is provided with baffling
Guide table and depositing dust flower orifice plate, baffling guide table are located at depositing dust flower orifice plate top, from deep combustion area high-temperature tail gas warp out
Depositing dust flower orifice plate enters baffling depositing dust area.
6. dual firing chamber's processing unit of domestic garbage pyrolysis stove is applied to according to claim 5, it is characterised in that the folding
Stream guide table is provided with multiple, the downward-sloping ring-type sloping platform that baffling guide table is made for Fire and abrasion resistant material, and its gradient >=
45°。
7. dual firing chamber's processing unit of domestic garbage pyrolysis stove is applied to according to Claims 2 or 3, it is characterised in that institute
State and peep hole, combustion gas monitoring holes, compressed air soot-blowing pipe and access hole are installed on dual firing chamber's housing.
8. dual firing chamber's processing unit of domestic garbage pyrolysis stove is applied to according to claim 2, it is characterised in that the collection
The fiery grid of gear is provided with the middle part of ash bucket.
9. dual firing chamber's processing unit of domestic garbage pyrolysis stove is applied to according to claim 3, it is characterised in that described two
Secondary wind supply mouth and burner are arranged on to non-equidistant deep combustion area from top to bottom.
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| CN114001357A (en) * | 2021-09-24 | 2022-02-01 | 中国科学院广州能源研究所 | Mobile medical waste cleaning and heat treatment device |
| DE102021005290A1 (en) | 2021-10-23 | 2023-04-27 | Dimitrios Fotakis | Device for dust reduction when hot gas is extracted from furnaces or gasifications. |
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| CN106705062B (en) | 2019-06-25 |
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