CN117515584A - Low-oxygen air distribution process for recycling flue gas and primary air of garbage incinerator - Google Patents
Low-oxygen air distribution process for recycling flue gas and primary air of garbage incinerator Download PDFInfo
- Publication number
- CN117515584A CN117515584A CN202311803788.5A CN202311803788A CN117515584A CN 117515584 A CN117515584 A CN 117515584A CN 202311803788 A CN202311803788 A CN 202311803788A CN 117515584 A CN117515584 A CN 117515584A
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- Prior art keywords
- flue gas
- pipe
- dust
- plate
- primary air
- Prior art date
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 239000003546 flue gas Substances 0.000 title claims abstract description 98
- 239000001301 oxygen Substances 0.000 title claims abstract description 52
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000008569 process Effects 0.000 title claims abstract description 24
- 238000004064 recycling Methods 0.000 title claims description 10
- 239000000428 dust Substances 0.000 claims abstract description 107
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000002485 combustion reaction Methods 0.000 claims abstract description 23
- 238000011084 recovery Methods 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 239000002253 acid Substances 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims abstract description 4
- 239000012717 electrostatic precipitator Substances 0.000 claims abstract description 3
- 238000007790 scraping Methods 0.000 claims description 49
- 238000001035 drying Methods 0.000 claims description 45
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 40
- 239000000779 smoke Substances 0.000 claims description 40
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 35
- 239000000843 powder Substances 0.000 claims description 25
- 239000000292 calcium oxide Substances 0.000 claims description 20
- 235000012255 calcium oxide Nutrition 0.000 claims description 20
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 7
- 239000005751 Copper oxide Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 7
- 229910000431 copper oxide Inorganic materials 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 7
- 239000002918 waste heat Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 230000005686 electrostatic field Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims 7
- 241000208125 Nicotiana Species 0.000 claims 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims 2
- 235000019504 cigarettes Nutrition 0.000 claims 2
- 230000002146 bilateral effect Effects 0.000 claims 1
- 244000309464 bull Species 0.000 claims 1
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 230000002000 scavenging effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- -1 when in combustion Chemical compound 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
- B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
-
- 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
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24V—COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
- F24V30/00—Apparatus or devices using heat produced by exothermal chemical reactions other than combustion
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
Abstract
The invention relates to the technical field of combustion furnaces, in particular to a low-oxygen air distribution process of recirculated flue gas and primary air of a garbage incinerator, which comprises the incinerator, wherein a flue gas outlet of the incinerator is connected with a heat recovery assembly through a flue gas outlet pipe, and the right side of the heat recovery assembly is connected with a dust removal box for removing dust particles in the flue gas, a deacidification tower for removing acid gas in the flue gas and a dry deoxidization assembly through pipelines in sequence; the inside of the dust removing box is divided into a left electrostatic dust removing chamber and a right dust filtering chamber by a dividing plate arranged in the middle, and a cathode plate and an anode plate structure are arranged in the electrostatic dust removing chamber. Through setting up dust collecting plate and vibration structure in the electrostatic precipitator room, can effectually shake off the dust that adheres to on the dust collecting plate, need not to use the power additionally and can not cause the corona electrode on the anode plate to warp simultaneously, influence the dust removal effect; in addition, through setting up dry deoxidization subassembly, can get rid of remaining steam and oxygen behind the flue gas deacidification tower.
Description
Technical Field
The invention belongs to the technical field of incinerators, and particularly relates to a low-oxygen air distribution process for recycling smoke and primary air of a garbage incinerator.
Background
At present, most of garbage incinerators are multi-hearth incinerators, staged combustion is carried out through multiple air inlets, the concentration of nitrogen oxides in combustion flue gas is reduced by controlling the oxygen content of primary air, secondary air and tertiary air, the oxygen content of the primary air is required to be low, incomplete combustion is guaranteed in a primary combustion zone, the generation of the nitrogen oxides is reduced, the flue gas enters the primary combustion zone together with the primary air after being treated, the oxygen content in the primary air is reduced, and recycling of the flue gas is realized.
For example, patent publication No. CN115949953A discloses a rotary kiln sludge incineration device and method provided with a graded air distribution and flue gas recirculation and system in the technical field of incineration treatment, which is characterized in that sludge and primary air are fed into a rotary kiln from a kiln head; sending secondary air from a kiln head to a firing section of the rotary kiln; the recirculated flue gas is sent from the kiln head to the steady burning section of the rotary kiln. The graded air distribution can form an anoxic fuel-rich area in the initial stage of combustion, and inhibit the generation of NOx; in the later period of combustion, the residual air required by combustion is fed in a secondary air form, so that the fuel is burnt out; the flue gas recirculation can moderately reduce the oxygen content in the furnace; the patent with the publication number of CN115218197A is in the technical field of boiler combustion, in particular to a flue gas recirculation air distribution method, which comprises the following steps: extracting the purified low-temperature flue gas from a tail flue of the boiler by using a recirculation fan; extracting high-temperature flue gas from a hearth above an ash bucket of a burn-out section of the incinerator by using a recirculation fan, and removing fly ash particles; the low-temperature flue gas and the high-temperature flue gas are mixed through the Laval nozzle, the flue gas is boosted by the recirculation fan after being mixed, and the flue gas is sprayed into the incinerator from the flue gas recirculation nozzle, so that a low-nitrogen combustion environment is established in the incinerator.
Although both patents can reduce the oxygen content of primary air by recycling air distribution through flue gas, when in combustion, oxygen is sufficient and excessive in secondary combustion and tertiary burnout, so that the flue gas contains a certain amount of oxygen, when the primary air is distributed, local oxygen content is excessive at the place where recycled flue gas enters, so that the concentration of nitrogen oxides generated by primary combustion is increased, and when flue gas is recycled and dedusted, on the other hand, the electrostatic precipitator is powered off, and external power is generally required to be connected with electromagnetic vibration to shake off attached dust, so that the loss of resources is increased.
In order to solve the problems that the recycled flue gas contains oxygen and an external power supply is required to be connected with electromagnetic vibration, a low-oxygen air distribution process for recycling the flue gas and primary air of a garbage incinerator is provided.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a low-oxygen air distribution process for recycling flue gas and primary air of a garbage incinerator, so as to solve the problems in the prior art.
In order to achieve the above purpose, the invention provides a low-oxygen air distribution process for recycling flue gas and primary air of a garbage incinerator, which comprises the following steps:
1. installation of equipment
S1, communicating an air supply pipe of a high-pressure air spraying device and a nozzle of a burner with a primary air supply pipe, and then sequentially communicating and installing a smoke outlet pipe, a dust removal box, a deacidification tower, a dry deoxidization assembly and a smoke return pipe, wherein the nozzle of the burner forms an included angle of 30 degrees with the air inlet direction, and the nozzle is positioned at the inner side of a branch pipe;
2. air inlet stage
S2, after equipment is installed, starting a high-pressure air spraying device to supply air, starting a nozzle of a combustor, and performing staged combustion on garbage in an incinerator, wherein the combusted flue gas enters a boiler through a smoke outlet pipe under the action of a circulating fan to perform waste heat recovery;
s3, enabling the flue gas subjected to waste heat recovery and cooling to enter a dust removal box through a pipeline and sequentially pass through an electrostatic dust removal chamber and a dust filtering chamber, forming an electrostatic field between a cathode plate and an anode plate after a high-voltage power supply is connected with the cathode plate and the anode plate, so that dust in the flue gas is ionized to be negatively charged with electrons, further enabling the flue gas and the dust to be gathered on dust collecting plates on two sides of the anode plate, simultaneously enabling a blade at the left end of a rotating rod to drive a rotating plate to rotate under the impact of the flue gas, further enabling the dust collecting plate to shake continuously to enable the attached dust to fall into the dust collecting hopper, and then enabling the flue gas to be filtered with fine dust again through the filter bag;
s4, filtering the flue gas, and then, feeding the flue gas into a deacidification tower to remove acid and sulfur;
s5, enabling the flue gas to enter a drying pipe after deacidification, enabling quick lime to fall in a powder hopper to adsorb water vapor remained in the flue gas after passing through a deacidification tower, enabling the quick lime to absorb water and release a large amount of heat, enabling copper wires to react with oxygen remained in the flue gas under heating conditions to produce copper oxide on the surfaces of the copper wires, and avoiding mixing the oxygen remained in the flue gas with primary air, so that the oxygen content of the primary air is higher than an expected value, and the concentration of nitrogen oxides in combustion products is increased;
s6, when drying and deoxidizing, the motor is started to drive the first scraping plate to move back and forth, the first scraping plate can push sticky calcium hydroxide produced by the reaction of quicklime and water to the edges of two sides, meanwhile, the second scraping plate can cling to the surface of the copper wire at any time under the action of the spring, and the copper oxide film on the surface of the copper wire is scraped in the moving process, so that the copper wire can continue to react with oxygen, and flue gas finally enters a primary combustion zone of the incinerator through a smoke return pipe, and is mixed with primary air inlet pipe and primary air.
The technical scheme of the invention comprises an incinerator for the process, wherein a smoke outlet of the incinerator is connected with a heat recovery assembly through a smoke outlet pipe, and the right side of the heat recovery assembly is connected with a dust removal box for removing dust particles in smoke, a deacidification tower for removing acid gases in the smoke and a dry deoxidization assembly through pipelines in sequence;
the inside of the dust removal box is divided into a left electrostatic dust removal chamber and a right dust filtration chamber through a dividing plate arranged in the middle, a cathode plate is arranged on the inner wall of the electrostatic dust removal chamber close to the front side and the rear side, an anode plate structure is arranged between the two cathode plates, the anode plate structure comprises a mounting plate, anode plates which are symmetrically embedded on the side wall of the mounting plate in a front-back mode and dust collecting plates which are symmetrically arranged on the side wall of the mounting plate in a front-back mode, a vibration structure is arranged between the anode plate structure and the cathode plate, and the vibration structure comprises a rotating rod, a plurality of blades which are regularly arranged at the left end of the rotating rod and a rotating plate which is positioned at the middle section of the rotating rod;
the drying and deoxidizing assembly comprises a drying pipe connected with a pipeline, a powder hopper, a plurality of deoxidizing structures and a first scraping plate structure, wherein the powder hopper is positioned above the middle section of the drying pipe and used for containing quicklime, the plurality of deoxidizing structures are used for reducing the concentration of oxygen in recirculated flue gas, the first scraping plate structure is used for cleaning the drying pipe, the bottom end of the powder hopper is provided with a powder outlet pipe communicated with the drying pipe, the bottom end outlet of the powder outlet pipe is provided with a dispersing structure, and the dispersing structure comprises a mounting rod fixed with the inner wall of the powder outlet pipe, a connecting sleeve positioned at the bottom end of the mounting rod and a plurality of dispersing blades regularly distributed on the outer wall of the connecting sleeve;
the deoxidization structure comprises a copper wire, mounting sleeves positioned at two ends of the copper wire and a fixing bolt used for clamping and fixing the copper wire.
In the technical scheme of the invention, the heat recovery assembly comprises a boiler for containing circulating water and a coiled pipe with two ends communicated with a pipeline, and a steam generator set is communicated above the boiler.
In the technical scheme of the invention, a connecting pipe communicated with a pipeline is arranged on the left side wall of the electrostatic dust collection chamber, a wind dividing plate is vertically fixed in the connecting pipe, smoke inlet holes are formed in two sides of the wind dividing plate in the connecting pipe, and the smoke inlet holes are arranged in an equal horizontal line and correspond to the rotating rod in position.
In the technical scheme of the invention, a plurality of regularly distributed filter bags are arranged in the dust filtering chamber, and the left ends of the filter bags penetrate through the partition plate and are communicated with the electrostatic dust collection chamber.
In the technical scheme of the invention, the front side wall and the rear side wall of the mounting plate are symmetrically provided with rotating shafts near the bottom, the rotating shafts penetrate through the dust collecting plate near the bottom, the dust collecting plate is arranged in a trapezoid table with wide upper part and narrow lower part, the edge of the side wall of the rotating plate is symmetrically provided with protruding parts, and the outer wall of the dust collecting plate is lapped on the edge of the side wall of the rotating plate.
In the technical scheme of the invention, a clamping ring with a convex vertical section is arranged in the middle of the inner wall of the connecting sleeve, a clamping groove is arranged at the position, close to the bottom, of the side wall of the mounting rod, corresponding to the clamping ring, the distribution range of the dispersing blades is larger than the inner diameter of the powder outlet pipe, and the dispersing blades and the rear opening of the drying pipe are positioned on the same horizontal line.
In the technical scheme of the invention, the first scraping plate structure comprises a motor, a threaded rod and a first scraping plate, wherein the motor is positioned at the front side wall of the drying pipe near the bottom, the threaded rod is coaxially connected with an output shaft of the motor, the first scraping plate is in threaded connection with the threaded rod, the first scraping plate is a semicircular plate, the outer diameter of the first scraping plate is identical to the inner diameter of the drying pipe, a plurality of scraping holes are symmetrically formed in the left side and the right side of the first scraping plate, and copper wires penetrate through the corresponding scraping holes.
In the technical scheme of the invention, second scraping plate mechanisms are symmetrically arranged in the scraping holes in a left-right mode, each second scraping plate mechanism comprises a second scraping plate, a sliding rod and a sliding rod groove matched with the sliding rod, the inner end of the sliding rod is fixed with the middle part of the outer wall of the second scraping plate, a spring is arranged between the sliding rod groove and the outer end of the sliding rod, and convex flanges are symmetrically arranged on the side walls of the sliding rod in an up-down mode.
In the technical scheme of the invention, the front and rear side walls of the incinerator are symmetrically provided with primary air inlet pipes for introducing primary air, a smoke return pipe is arranged between the drying pipe and the primary air inlet pipes, the smoke return pipe comprises a main connecting pipe communicated with the front end of the drying pipe and branch pipes respectively communicated with the front and rear primary air inlet pipes, one ends of the branch pipes are communicated with the main connecting pipe, and the other ends of the branch pipes are L-shaped and inserted into the primary air inlet pipes.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. in the invention, the dust collecting plate and the vibration structure are arranged in the electrostatic dust collecting chamber, so that dust attached to the dust collecting plate can be effectively vibrated off, no additional power supply is needed, and meanwhile, the deformation of a corona electrode on the anode plate and the influence on the dust collecting effect are avoided.
2. According to the invention, the dry deoxidization assembly is arranged, so that residual water vapor of the flue gas after passing through the deacidification tower can be removed, and heat generated by the reaction of quicklime and water is reused, so that residual oxygen of the flue gas reacts with copper wires, and the concentration of oxygen in the flue gas is reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of an evaporation structure according to the invention;
FIG. 3 is a cross-sectional view of the dust box structure of the invention;
FIG. 4 is an exploded view of an anode plate structure according to the present invention;
FIG. 5 is a schematic diagram of a vibration structure according to the present invention;
FIG. 6 is a cross-sectional view of the structure of the dry oxygen scavenging assembly of the present invention;
FIG. 7 is a cross-sectional view of the powder discharge tube according to the present invention;
FIG. 8 is a schematic view of the oxygen scavenging structure of the present invention;
FIG. 9 is a schematic view of a first screed according to the present invention;
FIG. 10 is a cross-sectional view of a wiper orifice structure according to the present invention;
FIG. 11 is an enlarged view of the structure A according to the present invention;
fig. 12 is a schematic view of the smoke return pipe structure in the present invention.
Reference numerals illustrate:
1. an incinerator; 11. a primary air inlet pipe;
2. a heat recovery assembly; 21. a boiler; 22. a serpentine tube;
3. a dust removal box; 31. an electrostatic dust collection chamber; 311. a cathode plate; 312. an anode plate structure; 3121. a mounting plate; 3122. an anode plate; 3123. a dust collecting plate; 3124. a rotating shaft; 313. a vibrating structure; 3131. a rotating rod; 3132. a blade; 3133. a rotating plate; 314. a connecting pipe; 3141. a wind dividing plate; 315. a smoke inlet hole; 32. a dust filtering chamber; 321. a filter bag; 33. a dividing plate;
4. a deacidification tower;
5. drying the oxygen scavenging assembly; 51. a drying tube; 52. a powder hopper; 521. a powder outlet pipe; 522. a dispersion structure; 5221. a mounting rod; 5221a, a card slot; 5222. connecting sleeves; 5223. a clasp; 5224. dispersing leaves; 53. an oxygen scavenging structure; 531. copper wires; 532. a mounting sleeve; 533. a fixing bolt; 54. a first squeegee structure; 541. a motor; 542. a threaded rod; 543. a first scraper; 5431. scraping holes; 5432. a second squeegee mechanism; 5432a, second squeegee; 5432b, slide bar; 5432c, slide bar grooves; 5432d, springs;
6. a smoke outlet pipe;
7. a smoke return pipe; 71. a main connecting pipe; 72. and a branch pipe.
Description of the embodiments
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or other components.
Referring to fig. 1-12, the low-oxygen air distribution process of the recycling flue gas and primary air of the garbage incinerator comprises the following steps:
1. installation of equipment
S1, communicating an air supply pipe of a high-pressure air spraying device and a nozzle of a burner with a primary air supply pipe 11, and sequentially installing a smoke outlet pipe 6, a dust removing box 3, a deacidification tower 4, a dry deoxidization assembly 5 and a smoke return pipe 7 in a communicated manner, wherein the nozzle of the burner forms an included angle of 30 degrees with the air inlet direction, and the nozzle is positioned at the inner side of a branch pipe 72;
4. air inlet stage
S2, after equipment is installed, starting a high-pressure air spraying device to supply air, starting a nozzle of a combustor, and performing staged combustion on garbage in an incinerator, wherein the combusted flue gas enters a boiler 21 through a flue gas outlet pipe 6 under the action of a circulating fan to perform waste heat recovery;
s3, flue gas subjected to waste heat recovery and temperature reduction enters the dust removal box 3 through a pipeline and sequentially passes through the electrostatic dust collection chamber 31 and the dust filtering chamber 32, an electrostatic field is formed between the cathode plate 311 and the anode plate 3122 after a high-voltage power supply is connected, so that dust in the flue gas is ionized to be negatively charged with electrons, further, the flue gas dust is collected on the dust collection plates 3123 on two sides of the anode plate 3122, simultaneously, under the impact of the flue gas, the blade 3132 at the left end of the rotating rod 3131 drives the rotating plate 3133 to rotate, and further, the dust collection plate 3123 continuously shakes the attached dust into the dust collection hopper, and then the flue gas is filtered with fine dust again through the filter bag 321 by the dust filtering chamber 32;
s4, filtering the flue gas, and then, feeding the flue gas into a deacidification tower 4 for acid and sulfur removal;
s5, enabling the flue gas to enter a drying pipe 51 after deacidification, wherein quicklime falls in a powder hopper 52 to adsorb water vapor remained in the flue gas after passing through a deacidification tower 4, and absorbing water by the quicklime to release a large amount of heat, and under a heating condition, enabling a copper wire 531 to react with oxygen remained in the flue gas to produce copper oxide on the surface of the copper wire 531, so that the mixing of the oxygen remained in the flue gas with primary air is avoided, the oxygen content of the primary air is higher than an expected value, and the concentration of nitrogen oxides in combustion products is increased;
s6, when drying and deoxidizing, the starting motor 541 drives the first scraping plate 543 to move back and forth, the first scraping plate 543 can push viscous calcium hydroxide produced by the reaction of quicklime and water to the edges of two sides, meanwhile, the second scraping plate 5432a can be closely attached to the surface of the copper wire 531 at any time under the action of the spring 5432d, and copper oxide films on the surface of the copper wire 531 are scraped in the moving process, so that the copper wire 531 can continue to react with oxygen in the incinerator 1.
In this embodiment, as shown in fig. 1-12, a smoke outlet of an incinerator 1 is connected with a heat recovery component 2 by arranging a smoke outlet pipe 6, a circulating fan is arranged in a fan housing at a smoke inlet end of the smoke outlet pipe 6, and a dust removal box 3 for removing dust particles in smoke, a deacidification tower 4 for removing acid gas in smoke and a dry deoxidization component 5 are sequentially connected to the right side of the heat recovery component 2 through pipelines, wherein the deacidification tower 4 is not described in detail in the prior art;
the inside of the dust removal box 3 is divided into a left electrostatic dust removal chamber 31 and a right dust filtration chamber 32 by a dividing plate 33 arranged in the middle, a power supply of the electrostatic dust removal chamber 31 is arranged above the dust removal box 3 and is respectively communicated with a cathode plate 311 and an anode plate 3122 by an insulator, the cathode plate 311 is arranged on the inner wall of the electrostatic dust removal chamber 31 near the front side and the rear side, an anode plate structure 312 is arranged between the two cathode plates 311, the anode plate structure 312 comprises a mounting plate 3121, anode plates 3122 which are symmetrically embedded on the side wall of the mounting plate 3121 in a front-back manner and dust collecting plates 3123 which are symmetrically arranged on the side wall of the mounting plate 3121 in a front-back manner, a vibration structure 313 is arranged between the anode plate structure 312 and the cathode plate 311, the vibration structure 313 comprises a rotating plate 3133 which is regularly arranged at the left end of the rotating rod 3131 and is fixed at the middle section of the rotating plate 3131, and the blade 3132 at the left end of the rotating plate 3133 is driven to rotate under the impact of smoke, so that the dust collecting plates 3123 continuously shake to make attached dust fall into a dust collecting hopper;
the drying deoxidization assembly 5 comprises a drying pipe 51 of a connecting pipeline, a powder hopper 52 positioned above the middle section of the drying pipe 51 and used for containing quicklime, a plurality of deoxidization structures 53 used for reducing the oxygen concentration in recirculated flue gas and a first scraping plate structure 54 used for cleaning the drying pipe 51, a powder outlet pipe 521 communicated with the drying pipe 51 is arranged at the bottom end of the powder hopper 52, a dispersing structure 522 is arranged at the bottom end outlet of the powder outlet pipe 521, the dispersing structure 522 comprises a mounting rod 5221 fixed with the inner wall of the powder outlet pipe 521, a connecting sleeve 5222 positioned at the bottom end of the mounting rod 5221 and a plurality of dispersing leaves 5224 regularly distributed on the outer wall of the connecting sleeve 5222, the dispersing leaves 5224 are driven to rotate when the flue gas enters the drying pipe 51, the quicklime is dispersed when the quicklime falls into the rotating dispersing leaves 5224, the quicklime is prevented from caking, and meanwhile, the distribution range of the quicklime is widened, and the quicklime can be effectively dried by water absorption.
It should be noted that sealing covers are arranged on the top surface of the dust filtering chamber 32 and the side wall of the drying pipe 51, so that the filter bag 321 and the drying pipe 51 can be cleaned conveniently.
The deoxidization structure 53 includes copper wire 531, be located the installation cover 532 at copper wire 531 both ends and be used for pressing from both sides the gim peg 533 of fixed copper wire 531, and installation cover 532 is steel material and outer end and drying tube 51 lateral wall are fixed, and when quick lime and water reaction, the heat of giving off can make copper wire 531 react with remaining oxygen in the flue gas, and then gets rid of the oxygen in the flue gas.
In this embodiment, as shown in fig. 2, the heat recovery assembly 2 includes a boiler 21 for containing circulating water and a coiled pipe 22 with two ends communicated with a pipeline, a steam generator set is communicated above the boiler 21, the heat of the flue gas just after combustion is too high, and the heat recovery assembly 2 can recycle the waste heat of the flue gas and can cool the flue gas.
In addition, as shown in fig. 3-5, a connecting pipe 314 communicated with a pipeline is arranged on the left side wall of the electrostatic dust collection chamber 31, a wind dividing plate 3141 is vertically fixed in the connecting pipe 314, smoke inlet holes 315 are formed in two sides of the wind dividing plate 3141 in the connecting pipe 314, the smoke inlet holes 315 are arranged corresponding to the positions of the rotating rods 3131 and are arranged in an equal horizontal line, a plurality of filter bags 321 which are regularly distributed are arranged in the dust filtering chamber 32, the left ends of the filter bags 321 penetrate through the partition plates 33 to be communicated with the electrostatic dust collection chamber 31, when smoke enters the electrostatic dust collection chamber 31, the wind dividing plate 3141 can guide the smoke to enter through the smoke inlet holes 315, so that the smoke can directly face blades 3132 at the left ends of the rotating rods 3131, the blades 3132 can rotate under the impact of the smoke, and dust attached to the dust collecting plates 3123 can be vibrated down;
specifically, the front and rear side walls of the mounting plate 3121 are symmetrically provided with a rotating shaft 3124 near the bottom, the rotating shaft 3124 passes through the dust collecting plate 3123 near the bottom, the upper end free lower end of the dust collecting plate 3123 is rotationally connected with the rotating shaft 3124, the dust collecting plate 3123 is a trapezoid table with wide upper part and narrow lower part, the edge of the side wall of the rotating plate 3133 is symmetrically provided with a protruding part, the outer wall of the dust collecting plate 3123 is lapped on the edge of the side wall of the rotating plate 3133, the protruding part of the rotating plate 3133 can periodically push the dust collecting plate 3123 outwards during rotation, and then the dust collecting plate 3123 is driven to shake continuously.
In addition, as shown in fig. 6-11, a clamping ring 5223 with a convex vertical section is arranged in the middle of the inner wall of the connecting sleeve 5222, a clamping groove 5221a is arranged at the position, corresponding to the clamping ring 5223, of the side wall of the mounting rod 5221 near the bottom, the connecting sleeve 5222 can be mounted on the mounting rod 5221 through the clamping connection between the clamping ring 5223 and the clamping groove 5221a, meanwhile, the distribution range of the dispersing blades 5224 is larger than the inner diameter of the powder outlet pipe 521, the quicklime is ensured to fall on the dispersing blades 5224 when falling, the dispersing blades 5224 and the rear side opening of the drying pipe 51 are positioned on the same horizontal line, and the dispersing blades 5224 can be directly blown when flue gas enters from the rear end;
further, the first scraping plate structure 54 comprises a motor 541 located on the front side wall of the drying pipe 51 and close to the bottom, a threaded rod 542 coaxially connected with an output shaft of the motor 541, and a first scraping plate 543 in threaded connection with the threaded rod 542, wherein the motor 541 is fixed through a bolt, the first scraping plate 543 is a semicircular plate, the outer diameter of the first scraping plate 543 is the same as the inner diameter of the drying pipe 51, a plurality of scraping holes 5431 are symmetrically formed in the left side and the right side of the first scraping plate 543, copper wires 531 penetrate through the corresponding scraping holes 5431, and the motor 541 drives the first scraping plate 543 to move back and forth to push thick calcium hydroxide generated by reaction to the two sides for cleaning conveniently;
further, a second scraping plate mechanism 5432 is symmetrically arranged in the scraping hole 5431 in a left-right manner, the second scraping plate mechanism 5432 comprises a second scraping plate 5432a, a sliding rod 5432b and a sliding rod groove 5432c matched with the sliding rod 5432b, the inner end of the sliding rod 5432b is fixed with the middle part of the outer wall of the second scraping plate 5432a, a spring 5432d is arranged between the inner end of the sliding rod groove 5432c and the outer end of the sliding rod 5432b, the second scraping plate 5432a can be always clung to the surface of the copper wire 531 under the action of the elastic force of the spring 5432d, the second scraping plate 5432a is driven to move back and forth to scrape copper oxide generated on the surface of the copper wire 531 while the first scraping plate 543 moves back and forth, convex flanges are symmetrically arranged on the side wall of the sliding rod 5432b up-down, and rotation of the second scraping plate 5432a is prevented during back and forth movement, and stability is improved.
In addition, as shown in fig. 12, the front and rear side walls of the incinerator 1 are symmetrically provided with primary air inlet pipes 11 for introducing primary air on the right side, a smoke return pipe 7 is arranged between the drying pipe 51 and the primary air inlet pipes 11, the smoke return pipe 7 comprises a main connecting pipe 71 communicated with the front end of the drying pipe 51 and branch pipes 72 respectively communicated with the front and rear primary air inlet pipes 11, one ends of the branch pipes 72 are communicated with the main connecting pipe 71, and the other ends of the branch pipes 72 are L-shaped and inserted into the primary air inlet pipes 11, so that recycled smoke is consistent with the wind direction of the primary air, and recharging into the smoke return pipe 7 during primary air inlet is avoided.
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. A low-oxygen air distribution process for recycling flue gas and primary air of a garbage incinerator, which is characterized by comprising the following steps of:
1. installation of equipment
S1, communicating an air supply pipe of a high-pressure air spraying device and a nozzle of a burner with a primary air supply pipe (11), and then sequentially communicating and installing a smoke outlet pipe (6), a dust removing box (3), a deacidification tower (4), a drying and deoxidizing assembly (5) and a smoke return pipe (7), wherein the nozzle of the burner forms an included angle of 30 degrees with the air inlet direction, and the nozzle is positioned at the inner side of a branch pipe (72);
2. air inlet stage
S2, after equipment is installed, starting a high-pressure air spraying device for air supply, simultaneously starting a nozzle of a combustor, carrying out staged combustion on garbage in an incinerator, and enabling the combusted flue gas to enter a boiler (21) through a flue gas outlet pipe (6) under the action of a circulating fan for waste heat recovery;
s3, enabling flue gas subjected to waste heat recovery and temperature reduction to enter a dust removal box (3) through a pipeline and sequentially pass through an electrostatic dust collection chamber (31) and a dust filtering chamber (32), enabling electrostatic fields to be formed between a cathode plate (311) and an anode plate (3122) after a high-voltage power supply is connected, enabling dust in the flue gas to be negatively charged by combination with electrons, enabling the flue gas dust to be collected on dust collection plates (3123) on two sides of the anode plate (3122), enabling a blade (3132) at the left end of a rotating rod (3131) to drive a rotating plate (3133) to rotate under the impact of the flue gas, enabling the dust collection plates (3123) to continuously shake and enable attached dust to fall into the dust collection chamber, and enabling the flue gas to be filtered with fine dust again through the filter bag (321) through the dust filtering chamber (32);
s4, filtering the flue gas, and then, feeding the flue gas into a deacidification tower (4) to remove acid and sulfur;
s5, enabling the flue gas to enter a drying pipe (51) after deacidification, wherein quick lime falls in a powder hopper (52) to adsorb water vapor remained in the flue gas after passing through a deacidification tower (4), and the quick lime absorbs water to release a large amount of heat, and under a heating condition, enabling a copper wire (531) to react with oxygen remained in the flue gas to produce copper oxide on the surface of the copper wire (531), so that the mixing of the oxygen remained in the flue gas with primary air is avoided, the oxygen content of the primary air is higher than an expected value, and the concentration of nitrogen oxides in combustion products is increased;
s6, when drying and deoxidizing, the motor (541) is started to drive the first scraping plate (543) to move back and forth, the first scraping plate (543) can push thick calcium hydroxide produced by the reaction of quicklime and water to two side edges, meanwhile, the second scraping plate (5432 a) can be tightly attached to the surface of the copper wire (531) at any time under the action of the spring (5432 d), copper oxide films on the surface of the copper wire (531) are scraped in the moving process, the copper wire (531) can continue to react with oxygen, and flue gas finally enters a primary combustion zone of the primary air inlet pipe (11) through the smoke returning pipe (7) and is mixed with primary air to enter the incinerator (1).
2. A low oxygen air distribution process of recirculated flue gas and primary air of a garbage incinerator, comprising an incinerator (1) for the process, characterized in that: the flue gas outlet of the incinerator (1) is connected with a heat recovery assembly (2) through a flue gas outlet pipe (6), and the right side of the heat recovery assembly (2) is connected with a dust removal box (3) for removing dust particles in flue gas, a deacidification tower (4) for removing acid gas in the flue gas and a dry deoxidization assembly (5) sequentially through pipelines;
the dust collection box is characterized in that the dust collection box (3) is internally divided into a left electrostatic dust collection chamber (31) and a right dust filtration chamber (32) through a dividing plate (33) arranged in the middle, a cathode plate (311) is arranged on the inner wall of the electrostatic dust collection chamber (31) close to the front side and the rear side, an anode plate structure (312) is arranged between the two cathode plates (311), the anode plate structure (312) comprises a mounting plate (3121), anode plates (3122) which are embedded on the side wall of the mounting plate (3121) in a front-back symmetrical manner and dust collection plates (3123) which are arranged on the side wall of the mounting plate (3121) in a front-back symmetrical manner, a vibration structure (313) is arranged between the anode plate structure (312) and the cathode plate (311), and the vibration structure (313) comprises a rotating rod (3131), a plurality of blades (3132) which are regularly arranged at the left end of the rotating rod (3131) and a rotating plate (3133) which are positioned in the middle section of the rotating rod (3131);
the drying and deoxidizing assembly (5) comprises a drying pipe (51) of a connecting pipeline, a powder hopper (52) which is positioned above the middle section of the drying pipe (51) and used for containing quicklime, a plurality of deoxidizing structures (53) used for reducing the oxygen concentration in recirculated flue gas and a first scraping plate structure (54) used for cleaning the drying pipe (51), wherein the bottom end of the powder hopper (52) is provided with a powder outlet pipe (521) which is communicated with the drying pipe (51), the bottom end outlet of the powder outlet pipe (521) is provided with a dispersing structure (522), and the dispersing structure (522) comprises a mounting rod (5221) which is fixed with the inner wall of the powder outlet pipe (521), a connecting sleeve (5222) which is positioned at the bottom end of the mounting rod (5221) and a plurality of dispersing leaves (5224) which are regularly distributed on the outer wall of the connecting sleeve (5222);
the deoxidizing structure (53) comprises a copper wire (531), mounting sleeves (532) positioned at two ends of the copper wire (531), and a fixing bolt (533) used for clamping and fixing the copper wire (531).
3. A process for low oxygen distribution of recirculated flue gas and primary air from a waste incinerator as claimed in claim 2, wherein: the heat recovery assembly (2) comprises a boiler (21) for containing circulating water and a coiled pipe (22) with two ends communicated with a pipeline, and a steam generator set is communicated above the boiler (21).
4. A process for low oxygen distribution of recirculated flue gas and primary air from a waste incinerator as claimed in claim 2, wherein: the left side wall of electrostatic precipitator room (31) is equipped with connecting pipe (314) with the pipeline intercommunication, vertical branch aerofoil (3141) that is fixed with in connecting pipe (314), lie in connecting pipe (314) branch aerofoil (3141) both sides are equipped with into cigarette hole (315), advance cigarette hole (315) with bull stick (3131) position corresponds and equi-horizontal line sets up.
5. A process for low oxygen distribution of recirculated flue gas and primary air from a waste incinerator as claimed in claim 2, wherein: a plurality of regularly distributed filter bags (321) are arranged in the dust filtering chamber (32), and the left end of each filter bag (321) passes through the partition plate (33) to be communicated with the electrostatic dust removing chamber (31).
6. A process for low oxygen distribution of recirculated flue gas and primary air from a waste incinerator as claimed in claim 2, wherein: the front side wall and the rear side wall of the mounting plate (3121) are symmetrically provided with rotating shafts (3124) near the bottom, the rotating shafts (3124) penetrate through the dust collecting plate (3123) near the bottom, the dust collecting plate (3123) is arranged as a trapezoid table with wide upper part and narrow lower part, the side wall edges of the rotating plate (3133) are symmetrically provided with protruding parts, and the outer wall of the dust collecting plate (3123) is lapped on the side wall edges of the rotating plate (3133).
7. A process for low oxygen distribution of recirculated flue gas and primary air from a waste incinerator as claimed in claim 2, wherein: the middle part of the inner wall of the connecting sleeve (5222) is provided with a clamping ring (5223) with a convex vertical section, a clamping groove (5221 a) is formed in the position, close to the bottom, of the side wall of the mounting rod (5221) corresponding to the clamping ring (5223), the distribution range of the dispersing blades (5224) is larger than the inner diameter of the powder outlet pipe (521), and the dispersing blades (5224) and the rear opening of the drying pipe (51) are positioned on the same horizontal line.
8. A process for low oxygen distribution of recirculated flue gas and primary air from a waste incinerator as claimed in claim 2, wherein: the utility model discloses a drying device, including drying tube (51), first scraper blade structure (54) including being located motor (541) that the lateral wall leaned on the bottom before drying tube (51), with threaded rod (542) of motor (541) output shaft coaxial coupling, with threaded rod (542) threaded connection's first scraper blade (543), first scraper blade (543) are semicircle board and outer diameter with drying tube (51) internal diameter is the same, first scraper blade (543) left and right sides symmetry is equipped with a plurality of scrapes hole (5431), copper wire (531) pass and correspond scrape hole (5431).
9. The low-oxygen air distribution process of the recycled flue gas and the primary air of the garbage incinerator according to claim 8, wherein the low-oxygen air distribution process is characterized in that: the scraping hole (5431) is internally provided with a second scraping plate mechanism (5432) in a bilateral symmetry manner, the second scraping plate mechanism (5432) comprises a second scraping plate (5432 a), a sliding rod (5432 b) and a sliding rod groove (5432 c) matched with the sliding rod (5432 b), the inner end of the sliding rod (5432 b) is fixed with the middle part of the outer wall of the second scraping plate (5432 a), a spring (5432 d) is arranged between the inner part of the sliding rod groove (5432 c) and the outer end of the sliding rod (5432 b), and convex flanges are arranged on the side wall of the sliding rod (5432 b) in an up-down symmetry manner.
10. A process for low oxygen distribution of recirculated flue gas and primary air from a waste incinerator as claimed in claim 2, wherein: the utility model discloses a disposable incinerator, including burning furnace (1), including main connecting pipe (71) and branch pipe (72), branch pipe (72) are connected with main connecting pipe (71), and the one end of branch pipe (72) with main connecting pipe (71) UNICOM, the other end is L shape and inserts in air-supply pipe (11) once, lateral wall is equipped with around burning furnace (1) is by right side symmetry and is used for letting in primary air-supply pipe (11), drying pipe (51) with be equipped with back tobacco pipe (7) between primary air-supply pipe (11), back tobacco pipe (7) include with main connecting pipe (71) of drying pipe (51) front end intercommunication and respectively with around branch pipe (72) of air-supply pipe (11) intercommunication, one end of branch pipe (72) with main connecting pipe (71) UNICOM, the other end is L shape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311803788.5A CN117515584A (en) | 2023-12-26 | 2023-12-26 | Low-oxygen air distribution process for recycling flue gas and primary air of garbage incinerator |
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| CN202311803788.5A CN117515584A (en) | 2023-12-26 | 2023-12-26 | Low-oxygen air distribution process for recycling flue gas and primary air of garbage incinerator |
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| CN108636098A (en) * | 2016-12-31 | 2018-10-12 | 上海康恒环境股份有限公司 | A kind of the minimum discharge purifier and its method of burning city domestic garbage flue gas |
| CN207122902U (en) * | 2017-07-11 | 2018-03-20 | 光大环境科技（中国）有限公司 | A kind of refuse burning system |
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