CN116481030A - Pyrolysis gasification incineration method and device for rural household garbage - Google Patents
Pyrolysis gasification incineration method and device for rural household garbage Download PDFInfo
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- CN116481030A CN116481030A CN202210047161.0A CN202210047161A CN116481030A CN 116481030 A CN116481030 A CN 116481030A CN 202210047161 A CN202210047161 A CN 202210047161A CN 116481030 A CN116481030 A CN 116481030A
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- incinerator
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- incineration
- flue gas
- shaftless spiral
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- 238000002309 gasification Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 29
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000003546 flue gas Substances 0.000 claims abstract description 49
- 238000003763 carbonization Methods 0.000 claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000009467 reduction Effects 0.000 claims abstract description 13
- 239000002893 slag Substances 0.000 claims abstract description 7
- 238000000746 purification Methods 0.000 claims abstract description 6
- 230000007246 mechanism Effects 0.000 claims description 21
- 238000009434 installation Methods 0.000 claims description 20
- 239000000446 fuel Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 10
- 230000009194 climbing Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 3
- 239000010791 domestic waste Substances 0.000 claims 6
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract description 9
- 238000002485 combustion reaction Methods 0.000 description 9
- 239000002737 fuel gas Substances 0.000 description 8
- 239000000779 smoke Substances 0.000 description 7
- 241000282414 Homo sapiens Species 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- -1 chlorine ions Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000005541 medical transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/302—Treating pyrosolids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/303—Burning pyrogases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/40—Gasification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
- F23G2202/103—Combustion in two or more stages in separate chambers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
A pyrolysis gasification incineration method for rural household garbage comprises the following incineration steps: (1) Conveying rural household garbage by using a shaftless screw conveyor, and completely performing anaerobic carbonization on the rural household garbage at the carbonization temperature: the carbonization temperature is 500-700 ℃ and is provided by high-temperature flue gas generated by an incinerator; (2) The combustible gas and carbon residue generated by carbonization enter an incinerator for incineration; incinerator internal incineration temperature: 800-1200 ℃; (3) The burned flue gas is purified by a flue gas purification system to reach the emission standard, and the rest slag is discharged out of the furnace to be used or buried. The rural domestic garbage pyrolysis gasification incineration method can automatically perform pipeline operation, does not generate dioxin, and has high organic garbage reduction rate.
Description
Technical Field
The invention relates to the technical field of garbage treatment, in particular to a pyrolysis, gasification and incineration method and device for rural household garbage.
Background
Garbage is a waste product which is inevitably generated in human life, and with the continuous improvement of rural life quality, rural household garbage is increasingly various. Because rural areas are far away from cities, rural household garbage is difficult to treat in time, and the household garbage is accumulated for a long time to generate a large number of harmful bacteria, so that the surrounding environment is endangered, the disease transmission probability is increased, and the human health is influenced.
The environmental conditions in most rural areas in China are not optimistic, and the condition that garbage is blown by wind and sewage is evaporated often occurs. Even if a garbage can is arranged in villages, the collected garbage is often treated in a way that the roadsides fall out, the hillsides throw out in a mess, and white pollution is spread over various places. Even if the rural area is in a slightly better condition, the indoor modernization and the outdoor mess are often caused, the old life style is difficult to get rid of all the time, the garbage problem in the rural area is very outstanding, and the rural area is seriously hindered from developing to the direction of neat and beautiful village. The traditional treatment mode of rural domestic garbage is that after being concentrated, the domestic garbage is drawn to a specific place for incineration, and the gas generated by the incineration causes realistic influence and potential hazard to the atmosphere and the like, and especially smoke dust and extremely toxic dioxin pollution can be generated, so that irreversible damage is generated to human beings and the atmosphere.
The research shows that the rural domestic garbage is mainly applied to the following three devices: 1. pyrolysis furnace, 2, gasifier, 3, incinerator. Because the garbage components are complex, the natural stacking specific gravity of different materials is different, the phenomena of empty burning, partial burning and bridging often occur in a pyrolysis furnace and a gasification furnace, the contact between garbage containing chloride ion components and oxygen cannot be ensured, and dioxin cannot be avoided. In addition, pyrolysis gas generated by the pyrolysis furnace needs secondary combustion, but auxiliary heat energy is needed to be added for the reasons, and the addition of the auxiliary heat energy can increase garbage disposal. The gasification furnace is easy to produce carbon slag, and the reduction rate of organic garbage is affected. Direct aerobic combustion in an incinerator can generate a large amount of dioxin, and a purification system used in rural areas cannot remove the dioxin. At present, an oxygen-insulating gasification device is under pilot plant test, but the complicated process equipment and investment cost cannot be applied to rural garbage treatment on a large scale. Therefore, development of a treatment method and a treatment device capable of meeting rural household garbage is needed.
Disclosure of Invention
The invention aims to provide a rural household garbage pyrolysis, gasification and incineration method which is easy to operate, can automatically perform pipeline operation, does not generate dioxin, and has high organic garbage reduction rate.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a pyrolysis gasification incineration method for rural household garbage comprises the following incineration steps:
(1) Conveying rural household garbage by using a shaftless screw conveyor, and completely performing anaerobic carbonization on the rural household garbage at the carbonization temperature: the carbonization temperature is 500-700 ℃ and is provided by high-temperature flue gas generated by the incinerator.
(2) The combustible gas and carbon residue generated by carbonization enter an incinerator for incineration; incinerator internal incineration temperature: 800-1200 ℃; when the fuel is combusted for the first time, the fuel is required to be combusted in the incinerator, and generated high-temperature flue gas provides carbonization temperature for the shaftless screw conveyor; after the rural domestic garbage is carbonized and conveyed into the incinerator for normal combustion, adding extra fuel into the incinerator according to whether the actual combustion condition is carried out.
(3) The burned flue gas is purified by a flue gas purification system to reach the emission standard, and the rest slag is discharged out of the furnace to be used or buried. The fume emission is according to emission standard: GB 18485-2014.
The incineration device adopted in the pyrolysis gasification incineration process comprises a shaftless spiral conveying carbonization machine and an incinerator; the lower part of the incinerator shell of the incinerator is provided with a reciprocating grate, the space above the reciprocating grate is an incinerator chamber, and the incinerator shell is provided with an oven door capable of putting fuel for the incinerator chamber; an air-adjusting door and an ash-climbing door are arranged on the incinerator shell below the reciprocating grate; one end of the reciprocating grate is connected with an ash chamber, and the other end of the reciprocating grate is connected with a pushing mechanism through a reciprocating pushing rod; the shaftless spiral conveying carbonization machine comprises a shaftless spiral conveying machine shell, one end of the shaftless spiral conveying machine shell is communicated with an incinerator chamber, shaftless spirals are arranged in the shaftless spiral conveying machine shell through a belt seat bearing and a connecting installation shaft, the belt seat bearing is arranged outside the other end of the shaftless spiral conveying machine shell, the connecting installation shaft is arranged on the belt seat bearing, one end of the connecting installation shaft is fixedly connected with the shaftless spirals, the other end of the connecting installation shaft is connected with a rotating mechanism through a shaft coupling, and the rotating mechanism drives the connecting installation shaft to rotate through the shaft coupling, so that the shaftless spirals are driven to rotate in the shaftless spiral conveying machine shell; the shaftless spiral conveyor shell is a shaftless spiral conveyor shell capable of transferring heat, a gasification furnace shell is wrapped outside the communication end of the shaftless spiral conveyor shell with the incinerator chamber, and a feed inlet is formed in the other end of the shaftless spiral conveyor shell; the cavity between the gasification furnace shell and the shaftless spiral conveyor shell is a gasification furnace chamber, one end of the gasification furnace chamber is communicated with the incineration furnace chamber, the other end of the gasification furnace chamber is communicated with a flue gas outlet pipe, the flue gas outlet pipe is connected with a flue gas purifier through the flue gas pipe, and the flue gas purifier is connected with a chimney through a draught fan. The flue gas purifier is a traditional flue gas purifier, such as a water seal dust remover.
Further preferred is: the shaftless screw conveyor shell is communicated with a fuel gas outlet pipe, and the fuel gas outlet pipe is communicated with the shaftless screw conveyor shell between the feed inlet and the gasification furnace shell; the gas outlet pipe is communicated with the incinerator chamber through a gas conveying pipe. The gas generated by the anaerobic gasification of the household garbage in the shaftless spiral conveyor shell is conveniently conveyed into the incinerator for combustion.
Further preferred is: the outside of gasifier shell be provided with the heat preservation.
Further preferred is: the incinerator shell is provided with a heat insulation layer.
Further preferred is: the rotating mechanism consists of a rotating motor and a gearbox,
further preferred is: the pushing mechanism comprises a pushing motor and a reduction gear box, a belt pulley on a rotating shaft of the pushing motor is connected with a belt pulley on an input shaft of the reduction gear box through a V-belt, a rotating wheel is mounted on an output shaft of the reduction gear box, and the outer side of the rotating wheel is hinged with a reciprocating pushing rod.
The rural household garbage pyrolysis gasification incineration method is characterized in that household garbage is placed in a shaftless spiral conveyor shell, high-temperature flue gas generated in the incineration process of an incinerator is introduced into a gasification furnace chamber of a gasification furnace shell to serve as an external heat source, household garbage in the shaftless spiral conveyor shell is subjected to anaerobic gasification through heat exchange, easy-to-carbonize plastics, paper and the like are changed into carbon residues, the generated carbon residues enter the incinerator through shaftless spiral conveying to generate high-temperature flue gas, the high-temperature flue gas is discharged from the incineration furnace chamber to enter the gasification furnace chamber, pyrolysis balance of the system is maintained, and the flue gas is discharged through a draught fan and a chimney after being purified through a flue gas purifier. In the garbage treatment process, substances containing chloride ions are not connected with oxygen in the gasification process to generate dioxin, and generated carbon residues are directly burnt to reduce the organic garbage by about 97 percent, so that the organic garbage is completely burntThe dioxin concentration of the process flue gas is lower than 0.003ngTEQ/Nm 3 Comprehensively overcomes the defects of a pyrolysis furnace, a gasification furnace and an incinerator.
Drawings
FIG. 1 is a schematic view of a connection structure of an incineration device employed;
FIG. 2 is an application site diagram of the incineration device;
the name of the serial number in the figure is:
1. the device comprises a rotating mechanism, 2, a coupling, 3, a bearing with a seat, 4, a connecting installation shaft, 5, a shaftless spiral, 6, a shaftless spiral conveyor shell, 7, a feed inlet, 8, a gas outlet pipe, 9, a gas conveying pipe, 10, a gas outlet pipe, 11, a gasification furnace chamber, 12, a gasification furnace shell, 13, a gas pipe, 14, a gas purifier, 15, an induced draft fan, 16, a chimney, 17, a furnace door, 18, an incineration furnace chamber, 19, an incinerator shell, 20, an ash chamber, 21, a ventilation door, 22, a reciprocating grate, 23, an ash climbing door, 24, a reciprocating push rod, 25 and a push mechanism.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Example 1
A pyrolysis gasification incineration method for rural household garbage comprises the following incineration steps:
(1) Conveying rural household garbage by using a shaftless screw conveyor, and completely performing anaerobic carbonization on the rural household garbage at the carbonization temperature: the carbonization temperature is 500-700 ℃ and is provided by high-temperature flue gas generated by the incinerator.
(2) The combustible gas and carbon residue generated by carbonization enter an incinerator for incineration; incinerator internal incineration temperature: 800-1200 ℃; when the fuel is combusted for the first time, the fuel is required to be combusted in the incinerator, and generated high-temperature flue gas provides carbonization temperature for the shaftless screw conveyor; after the rural domestic garbage is carbonized and conveyed into the incinerator for normal combustion, adding extra fuel into the incinerator according to whether the actual combustion condition is carried out.
(3) The burned flue gas is purified by a flue gas purification system to reach the emission standard, and the rest slag is discharged out of the furnace to be used or buried. The fume emission is according to emission standard: GB 18485-2014.
The incineration device adopted in the pyrolysis gasification incineration process comprises a shaftless spiral conveying carbonization machine and an incinerator; the lower part of the incinerator shell 19 of the incinerator is provided with a reciprocating grate 22, the space above the reciprocating grate 22 is an incinerator chamber 18, and the incinerator shell 19 is provided with an oven door 17 which can put fuel into the incinerator chamber 18; a throttle valve 21 and an ash climbing door 23 are arranged on the incinerator shell 19 below the reciprocating grate 22; one end of the reciprocating grate 22 is connected with an ash chamber 20, and the other end of the reciprocating grate 22 is connected with a pushing mechanism 25 through a reciprocating pushing rod 24; the shaftless spiral conveying carbonization machine comprises a shaftless spiral conveying machine shell 6, one end of the shaftless spiral conveying machine shell 6 is communicated with an incinerator chamber 18, a shaftless spiral 5 is arranged in the shaftless spiral conveying machine shell 6 through a seat bearing 3 and a connecting installation shaft 4, the seat bearing 3 is arranged outside the other end of the shaftless spiral conveying machine shell 6, the connecting installation shaft 4 is arranged on the seat bearing 3, one end of the connecting installation shaft 4 is fixedly connected with the shaftless spiral 5, the other end of the connecting installation shaft 4 is connected with a rotating mechanism 1 through a coupler 2, and the rotating mechanism 1 drives the connecting installation shaft 4 to rotate through the coupler 2 in a power transmission manner, so that the shaftless spiral 5 is driven to rotate in the shaftless spiral conveying machine shell 6; the gasification furnace shell 12 is wrapped outside the communication end of the shaftless spiral conveyor shell 6 with the incinerator chamber 18, and a feed inlet 7 is arranged at the other end of the shaftless spiral conveyor shell 6; the cavity between the gasification furnace shell 12 and the shaftless spiral conveyor shell 6 is a gasification furnace chamber 11, one end of the gasification furnace chamber 11 is communicated with an incineration furnace chamber 18, the other end of the gasification furnace chamber 11 is communicated with a flue gas outlet pipe 10, the flue gas outlet pipe 10 is connected with a flue gas purifier 14 through a flue gas pipe 13, and the flue gas purifier 14 is connected with a chimney 16 through a draught fan 15.
Example 2
A pyrolysis gasification incineration method for rural household garbage comprises the following incineration steps:
(1) Conveying rural household garbage by using a shaftless screw conveyor, and completely performing anaerobic carbonization on the rural household garbage at the carbonization temperature: the carbonization temperature is 500-700 ℃ and is provided by high-temperature flue gas generated by the incinerator.
(2) The combustible gas and carbon residue generated by carbonization enter an incinerator for incineration; incinerator internal incineration temperature: 800-1200 ℃; when the fuel is combusted for the first time, the fuel is required to be combusted in the incinerator, and generated high-temperature flue gas provides carbonization temperature for the shaftless screw conveyor; after the rural domestic garbage is carbonized and conveyed into the incinerator for normal combustion, adding extra fuel into the incinerator according to whether the actual combustion condition is carried out.
(3) The burned flue gas is purified by a flue gas purification system to reach the emission standard, and the rest slag is discharged out of the furnace to be used or buried. The fume emission is according to emission standard: GB 18485-2014.
The incineration device adopted in the pyrolysis gasification incineration process comprises a shaftless spiral conveying carbonization machine and an incinerator; the lower part of the incinerator shell 19 of the incinerator is provided with a reciprocating grate 22, the space above the reciprocating grate 22 is an incinerator chamber 18, and the incinerator shell 19 is provided with an oven door 17 which can put fuel into the incinerator chamber 18; a throttle valve 21 and an ash climbing door 23 are arranged on the incinerator shell 19 below the reciprocating grate 22; one end of the reciprocating grate 22 is connected with an ash chamber 20, and the other end of the reciprocating grate 22 is connected with a pushing mechanism 25 through a reciprocating pushing rod 24; the shaftless spiral conveying carbonization machine comprises a shaftless spiral conveying machine shell 6, one end of the shaftless spiral conveying machine shell 6 is communicated with an incinerator chamber 18, a shaftless spiral 5 is arranged in the shaftless spiral conveying machine shell 6 through a seat bearing 3 and a connecting installation shaft 4, the seat bearing 3 is arranged outside the other end of the shaftless spiral conveying machine shell 6, the connecting installation shaft 4 is arranged on the seat bearing 3, one end of the connecting installation shaft 4 is fixedly connected with the shaftless spiral 5, the other end of the connecting installation shaft 4 is connected with a rotating mechanism 1 through a coupler 2, and the rotating mechanism 1 drives the connecting installation shaft 4 to rotate through the coupler 2 in a power transmission manner, so that the shaftless spiral 5 is driven to rotate in the shaftless spiral conveying machine shell 6; the gasification furnace shell 12 is wrapped outside the communication end of the shaftless spiral conveyor shell 6 with the incinerator chamber 18, and a feed inlet 7 is arranged at the other end of the shaftless spiral conveyor shell 6; the cavity between the gasification furnace shell 12 and the shaftless spiral conveyor shell 6 is a gasification furnace chamber 11, one end of the gasification furnace chamber 11 is communicated with an incineration furnace chamber 18, the other end of the gasification furnace chamber 11 is communicated with a flue gas outlet pipe 10, the flue gas outlet pipe 10 is connected with a flue gas purifier 14 through a flue gas pipe 13, and the flue gas purifier 14 is connected with a chimney 16 through a draught fan 15.
The shaftless screw conveyor shell 6 is communicated with a gas outlet pipe 8, and the gas outlet pipe 8 is communicated with the shaftless screw conveyor shell 6 between the feed inlet 7 and the gasification furnace shell 12; the gas outlet pipe 8 communicates with the incinerator chamber 18 through a gas delivery pipe 9.
The outside of the gasification furnace shell 12 is provided with a heat preservation layer, so that heat dissipation loss in the gasification furnace chamber 11 is avoided.
The incinerator shell 19 is provided with a heat insulation layer, so that heat dissipation of the incinerator chamber 18 is reduced or avoided.
The rotating mechanism 1 consists of a rotating motor and a gearbox; an output shaft of the rotating motor is connected with a gearbox, and an output shaft of the gearbox is connected with a connecting and mounting shaft 4 through a coupler 2.
The pushing mechanism 25 comprises a pushing motor and a reduction gear box, a belt pulley on a rotating shaft of the pushing motor is connected with a belt pulley on an input shaft of the reduction gear box through a V-belt, a rotating wheel is mounted on an output shaft of the reduction gear box, and the outer side of the rotating wheel is hinged with the reciprocating pushing rod 24.
The operation flow of the pyrolysis gasification incineration method for rural household garbage is as follows: when in first use, fuel is placed in the incinerator chamber 18 to be combusted to generate high-temperature smoke, the smoke enters the gasification furnace chamber 11 due to the action of the induced draft fan 14, then enters the smoke purifier 14 from the smoke outlet pipe 10 and the smoke pipe 13, and is discharged from the chimney 16 after being purified by the smoke purifier 14; the pushing mechanism 25 pushes the reciprocating pushing rod 24 to realize the reciprocating motion of the reciprocating grate 22, and the frequency of the reciprocating motion is adjusted to a proper frequency, so that carbon slag is fully combusted on the reciprocating grate 22, and ash residues on the reciprocating grate 22 fall into the ash residue chamber 20; the household garbage enters the shaftless spiral conveyor shell 6 from the feed inlet 7, the shaftless spiral 5 is driven to rotate through the rotating mechanism 1 to be conveyed into the incinerator cavity 18, the rotating conveying speed of the shaftless spiral 5 meets the requirement that the household garbage is in the shaftless spiral conveyor shell 6 of the gasification furnace shell 12, when the household garbage is conveyed into the shaftless spiral conveyor shell 6 of the gasification furnace shell 12, high-temperature flue gas in the gasification furnace cavity 11 is subjected to heat exchange to perform the oxygen insulation gasification on the household garbage, plastic, paper and the like which are easy to char are changed into carbon residues and fuel gas, the generated carbon residues are conveyed into the incinerator through the shaftless spiral, the generated fuel gas is conveyed into the incinerator through the fuel gas outlet pipe 8, the generated fuel gas is conveyed into the incinerator through the fuel gas conveying pipe 10, the high-temperature flue gas is generated by burning the carbon residues and the fuel gas, the high-temperature flue gas is discharged into the gasification furnace cavity 12 from the incinerator cavity 8, the pyrolysis balance of the system is maintained, and no dioxin is generated by the material containing chlorine ions in the gasification furnace in the process of continuously adding additional fuel into the incinerator according to the actual burning condition, and the reduction of the generated by the incinerator is directly reduced by the incinerator to 97%, and the comprehensive gasification is overcome.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. A pyrolysis gasification incineration method for rural household garbage is characterized by comprising the following steps of: the incineration steps are as follows:
(1) Conveying rural household garbage by using a shaftless screw conveyor, and completely performing anaerobic carbonization on the rural household garbage at the carbonization temperature: the carbonization temperature is 500-700 ℃ and is provided by high-temperature flue gas generated by an incinerator;
(2) The combustible gas and carbon residue generated by carbonization enter an incinerator for incineration; incinerator internal incineration temperature: 800-1200 ℃;
(3) The burned flue gas is purified by a flue gas purification system to reach the emission standard, and the rest slag is discharged out of the furnace to be used or buried.
2. The rural domestic waste pyrolysis, gasification and incineration method according to claim 1, wherein the method comprises the following steps: the incineration device adopted in the pyrolysis gasification incineration process comprises a shaftless spiral conveying carbonization machine and an incinerator; the lower part of the inner part of an incinerator shell (19) of the incinerator is provided with a reciprocating grate (22), the space above the reciprocating grate (22) is an incinerator chamber (18), and the incinerator shell (19) is provided with an oven door (17) which can put fuel into the incinerator chamber (18); a throttle valve (21) and an ash climbing door (23) are arranged on the incinerator shell (19) below the reciprocating grate (22); one end of the reciprocating grate (22) is connected with an ash chamber (20), and the other end of the reciprocating grate (22) is connected with a pushing mechanism (25) through a reciprocating pushing rod (24); the shaftless spiral conveying carbonization machine comprises a shaftless spiral conveying machine shell (6), one end of the shaftless spiral conveying machine shell (6) is communicated with an incinerator chamber (18), a shaftless spiral (5) is arranged in the shaftless spiral conveying machine shell (6) through a belt seat bearing (3) and a connecting installation shaft (4), the connecting installation shaft (4) is arranged on the belt seat bearing (3), one end of the connecting installation shaft (4) is fixedly connected with the shaftless spiral (5), and the other end of the connecting installation shaft (4) is connected with a rotating mechanism (1) through a coupling (2); the gasification furnace shell (12) is wrapped outside the communication end of the shaftless spiral conveyor shell (6) with the incinerator chamber (18), and a feed inlet (7) is arranged at the other end of the shaftless spiral conveyor shell (6); the cavity between the gasification furnace shell (12) and the shaftless spiral conveyor shell (6) is a gasification furnace chamber (11), one end of the gasification furnace chamber (11) is communicated with an incinerator chamber (18), the other end of the gasification furnace chamber (11) is communicated with a flue gas outlet pipe (10), the flue gas outlet pipe (10) is connected with a flue gas purifier (14) through a flue gas pipe (13), and the flue gas purifier (14) is connected with a chimney (16) through a draught fan (15).
3. The rural domestic waste pyrolysis, gasification and incineration method according to claim 2, wherein the method comprises the following steps: the shaftless spiral conveyor shell (6) is communicated with a gas outlet pipe (8), and the gas outlet pipe (8) is communicated with the shaftless spiral conveyor shell (6) between the feed inlet (7) and the gasification furnace shell (12); the gas outlet pipe (8) is communicated with the incinerator chamber (18) through a gas conveying pipe (9).
4. The rural domestic waste pyrolysis, gasification and incineration method according to claim 2, wherein the method comprises the following steps: the outside of the gasification furnace shell (12) is provided with a heat preservation layer.
5. The rural domestic waste pyrolysis, gasification and incineration method according to claim 2, wherein the method comprises the following steps: the incinerator shell (19) is provided with a heat insulation layer.
6. The rural domestic waste pyrolysis, gasification and incineration method according to claim 2, wherein the method comprises the following steps: the rotating mechanism (1) consists of a rotating motor and a gearbox.
7. The rural domestic waste pyrolysis, gasification and incineration method according to claim 2, wherein the method comprises the following steps: the pushing mechanism (25) comprises a pushing motor and a reduction gear box, a belt pulley on a rotating shaft of the pushing motor is connected with a belt pulley on an input shaft of the reduction gear box through a V-belt, a rotating wheel is mounted on an output shaft of the reduction gear box, and the outer side of the rotating wheel is hinged with a reciprocating pushing rod (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210047161.0A CN116481030A (en) | 2022-01-17 | 2022-01-17 | Pyrolysis gasification incineration method and device for rural household garbage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210047161.0A CN116481030A (en) | 2022-01-17 | 2022-01-17 | Pyrolysis gasification incineration method and device for rural household garbage |
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| CN202210047161.0A Pending CN116481030A (en) | 2022-01-17 | 2022-01-17 | Pyrolysis gasification incineration method and device for rural household garbage |
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| Country | Link |
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| CN (1) | CN116481030A (en) |
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- 2022-01-17 CN CN202210047161.0A patent/CN116481030A/en active Pending
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