CN207019072U - A kind of domestic garbage pyrolysis wet flue gas recycling device - Google Patents

A kind of domestic garbage pyrolysis wet flue gas recycling device Download PDF

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Publication number
CN207019072U
CN207019072U CN201720150510.6U CN201720150510U CN207019072U CN 207019072 U CN207019072 U CN 207019072U CN 201720150510 U CN201720150510 U CN 201720150510U CN 207019072 U CN207019072 U CN 207019072U
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China
Prior art keywords
thermal cracking
dry thermal
flue gas
air
pyrolysis
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Expired - Fee Related
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CN201720150510.6U
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Chinese (zh)
Inventor
陈超
汪乐丰
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Changsha Super Environment Technology Co Ltd
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Changsha Super Environment Technology Co Ltd
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Abstract

The utility model belongs to technical field of waste treatment, is related to a kind of domestic garbage pyrolysis wet flue gas recycling device and method.A kind of domestic garbage pyrolysis wet flue gas recycling device, including body of heater unit, deslagging unit and air input block, body of heater unit include the charging aperture of input rubbish, and the lower section of charging aperture is followed successively by dry thermal cracking room, pyrolysis vaporizer and firing chamber from top to bottom;Exported in the top of dry thermal cracking room provided with wet flue gas, the wet flue gas entrance being arranged on above firing chamber is connected to by pipeline;Pyrolytic gasification gas vent is provided with the top of pyrolysis vaporizer.The beneficial effects of the utility model are:Reduce the moisture in pyrolysis gas, add the calorific value of pyrolysis gas again, simultaneously as regulation of the wet flue gas to pyrolytic gasification material layer temperature, it is possible to reduce the risk of pyrolytic gasification bed of material coking, the phosphorus content in lime-ash can also be reduced.

Description

A kind of domestic garbage pyrolysis wet flue gas recycling device
Technical field
The utility model belongs to technical field of waste treatment, is related to a kind of domestic garbage pyrolysis wet flue gas and recycles dress Put.
Background technology
China《" 12 " national application of city life garbage harmless treatment Facilities Construction planning》It is required that life rubbish in 2015 Rubbish burning disposal facility ability accounts for the 35% of National urban life ability to be harmless, and eastern region reaches 48%.Burning is The Main Patterns of current China's domestic rubbish disposal.
Existing incineration technology mainly has 4 kinds:Stoker fired grate burning, fluidized combustion, rotary kiln burns, pyrolytic gasification burns Burn.Although current stoker fired grate incineration technology is most widely used in China, pyrolyzing, gasifying and incinerating technology, given birth to Qi bioxin Into the advantages that low, flying dust yield is few, valuable metal easily reclaims is measured, turn into the international and domestic house refuse heat treatment for falling over each other research and development Technology.
Pyrolyzing, gasifying and incinerating technology mainly has control air oxidation (CAO) type refuse pyrolysis of Canadian Rui Wei companies at present Gasification burning technology, the weak former fluidized gasification fusion technology of Japan, Shenzhen Han Shi solid wastes company and Tsing-Hua University's joint development LXRF vertical rotating pyrolytic incineration technologies etc..
Because China's house refuse is by the way of mixed collection, complicated rubbish constituent, moisture content height, calorific value be present The features such as low.In existing pyrolytic gasification processing, often need to be pre-processed, generally comprise sorting (magnetic separation, selection by winnowing, people's work point Pick), crush, drying, shaping etc., pretreatment process length, complex procedures, the problem of it is present mainly includes:(1) existing pre- place Reason technology therefore not only wastes a large amount of manpower and materials it is difficult to ensure that sorting, crushing efficiency, and often over the rubbish of pretreatment Rubbish still can not fully meet requirement;(2) existing pyrolysis oven such as rotary kiln, fluid bed etc. is required to relatively low into stove moisture content, Pyrolytic reaction must dry to rubbish, no matter using indirect thermal source or direct heat source, drying can all produce a large amount of flue gases, This flue gas odor concentration is high, it is necessary to which further deodorization could qualified discharge.
In addition, existing domestic garbage pyrolysis gasification is generally completed in the equipment such as fixed bed, fluid bed, rotary kiln, it is pyrolyzed Fuel gas is drawn above rubbish, and the moisture in rubbish becomes water vapour and is mixed into pyrolysis gas, causes fuel gas calorific value low, Second-time burning room temperature does not increase.In order to reach second-time burning temperature more than 850 DEG C, have to put into auxiliary fuel, greatly increase Garbage disposal cost;Require that refuse moisture content is low, calorific capacity is high simultaneously, so as to limit domestic garbage pyrolysis incineration technology Popularization and application.
Application No. CN201010190497.X Chinese invention patent discloses a kind of waste gasification purification reacting furnace, if There are body of heater, fire grate, blower fan, escape pipe, it is characterized in that:The body of heater is inside and outside protecting wall structure, internal protecting wall inner lining refractory, Space is left between outer furnace wall and internal protecting wall, is burner hearth in internal protecting wall;Sealing diaphragm plate is provided between internal protecting wall and outer furnace wall With support diaphragm plate;On outer furnace wall between diaphragm plate and furnace roof be provided with by outside body of heater to the external admission inside and outside furnace wall Hole, the space by inside and outside tweer of arrangement one week is provided with the internal protecting wall between diaphragm plate and furnace roof to entering in burner hearth Stomata;Single or multiple lift rolling fire grate is provided with below internal protecting wall;Lower portion of furnace body outer furnace wall is provided with escape pipe and exported with combustion gas Pipeline communication, as descend air outlet structure;Feed arrangement and burner hearth upper end mouth sealing device are provided with the top of body of heater, it is as enterprising Expect structure;It is provided with interior outer furnace wall between described diaphragm plate A, B and is passed through in burner hearth the simultaneously igniter of with closure and sight Fire hole;Deslagging device is provided with below body of heater;Interior outer furnace wall is provided with several temperature thermocouples;The single or multiple lift fire grate cloth Put in the lower section of internal protecting wall, be the traveling-grate stoker of hollow made of heat proof material or solid rolling roller rod support;The fire grate One end of hollow roller rod is provided with air inlet pipe, and the other end is provided with escape pipe, and the escape pipe is connected to upper of furnace body by a branch pipe In burner hearth, and entered by another branch pipe in the space between diaphragm plate A and furnace roof;The feed arrangement is fed by squash type and filled Put or bucket type feeding apparatus hoisting is formed;The squash type feed arrangement for the interior spiral squeezing type feed arrangement for setting helical axis or The feed arrangement of cylinder fashion of extrusion;Deslagging device below the body of heater is wet method deslagging device, is provided with out slag bath and water Block plate.
It is low drying garbage layer height to be present in the patent application, easily flame-out when msw water content raises, the space-time (unit interval Unit space) problem such as efficiency is low.
Utility model content
The purpose of this utility model is in view of the shortcomings of the prior art, there is provided a kind of domestic garbage pyrolysis wet flue gas circulation profit With device, it can accurately control drying, pyrolysis, reduction and gaseous, oxidizing fire, the process such as burn, you can make full use of flue gas hot Rubbish is dried amount, can be used, can also be improved water vapour caused by drying as pyrolysis gas agent again Pyrolytic gasification gas heating value, the spatiotemporal efficiency of pyrolytic gasification is improved, prevent localized hyperthermia's coking.
The utility model solve problem technical scheme be:A kind of domestic garbage pyrolysis wet flue gas recycling device, bag Body of heater unit, deslagging unit and air input block are included, the deslagging unit is arranged at the bottom of the body of heater unit, the sky Gas input block is connected by pipeline with the body of heater unit;
The body of heater unit includes being arranged at the charging aperture for being used to put into rubbish at the top of body of heater, the lower section of the charging aperture Dry thermal cracking room, pyrolysis vaporizer and firing chamber are followed successively by from top to bottom;
The dry thermal cracking room rotary furnace bar for being used for carrying fuel is provided with the inside of the dry thermal cracking room, in the body of heater Top provided with wet flue gas export, in the dry thermal cracking room, the top of rotary furnace bar is provided with dry thermal cracking blast pipe;
Pyrolysis vaporizer's rotary furnace bar is provided with the inside of the pyrolysis vaporizer, in pyrolysis vaporizer's rotary furnace bar Top be provided with pyrolytic gasification air inlet pipe, be provided with pyrolytic gasification gas vent on the pyrolysis vaporizer top;
Firing chamber's air inlet pipe is provided with inside the firing chamber, is connected in the bottom of the firing chamber and the deslagging unit It is logical, it is provided with the wet flue gas entrance by pipeline with the wet flue gas outlet on the firing chamber top;
The deslagging unit includes slag removing chamber, the outlet connection slag remover of the slag removing chamber, in the bottom of the slag removing chamber Provided with fire grate of slagging tap, slag removing chamber's ash bucket is provided with the lower surface of the fire grate of slagging tap;
The air input block includes air blower, by pipeline respectively with the dry thermal cracking blast pipe, the pyrolysis Gasification air inlet pipe is connected with firing chamber's air inlet pipe, and high temperature is provided between the air blower and the dry thermal cracking blast pipe Air preheater, low-temperature air preheater is provided between the air blower and the pyrolytic gasification air inlet pipe.
Further, high temperature air is provided between the dry thermal cracking blast pipe and the high-temperature air preheater to adjust Valve.
Further, Cryogenic air is provided between the pyrolytic gasification air inlet pipe and the low-temperature air preheater to adjust Valve.
Further, normal temperature air regulating valve is provided between firing chamber's air inlet pipe and the air blower.
Further, dry thermal cracking room rotary furnace bar, pyrolysis vaporizer's rotary furnace bar and the fire grate of slagging tap Being capable of activity.
Further, dry thermal cracking room rotary furnace bar and pyrolysis vaporizer's rotary furnace bar are replaced with fire grate.
The beneficial effects of the utility model are:
Reduce the moisture in pyrolysis gas, add the calorific value of pyrolysis gas again, simultaneously as wet flue gas is to pyrolysis gas material The regulation of layer temperature, it is possible to reduce the risk of pyrolytic gasification bed of material coking, the phosphorus content in lime-ash can also be reduced.
Brief description of the drawings
Fig. 1 described device structural representations.
In figure:1- garbage inlets, 2- dry thermal crackings room, 3- pyrolysis vaporizer, 4- firing chambers, 5- slag removing chamber, 6- slagging-off Machine, 7- slag removing chamber ash bucket, 8- slag tap fire grate, 9- firing chambers air inlet pipe, 10- pyrolytic gasification air inlet pipe, 11- dry thermal cracking air intakes Pipe, the outlet of 12- wet flue gas, 13- high temperature air regulating valves, 14- dry thermal crackings room rotary furnace bar, 15- pyrolysis vaporizer revolving burner Bar, 16- high-temperature air preheaters, 17- low-temperature air preheaters, 18- air blowers, 19- Cryogenic air regulating valves, 20- normal temperature are empty Gas regulating valve, 21- wet flue gas entrances, 22- pyrolytic gasification gas vents.
Embodiment
With reference to the accompanying drawings and detailed description, the utility model is further described.
Embodiment one
Described device, as shown in figure 1, including body of heater unit, deslagging unit and air input block, the deslagging unit is set The bottom of the body of heater unit is placed in, the air input block is connected by pipeline with the body of heater unit;
The body of heater unit includes being arranged at is used to put into the charging aperture 1 of rubbish at the top of body of heater, under the charging aperture Side is followed successively by dry thermal cracking room 2, pyrolysis vaporizer 3 and firing chamber 4 from top to bottom;
The dry thermal cracking room rotary furnace bar 14 for being used for carrying fuel is provided with the inside of the dry thermal cracking room 2, described The top of body of heater is provided with wet flue gas outlet 12, and in the dry thermal cracking room, the top of rotary furnace bar is provided with dry thermal cracking blast pipe 11;
Pyrolysis vaporizer's rotary furnace bar 15 is provided with the inside of the pyrolysis vaporizer 3, is rotated in the pyrolysis vaporizer The top of fire bars is provided with pyrolytic gasification air inlet pipe 10, and pyrolytic gasification gas vent 22 is provided with the pyrolysis vaporizer top;
Firing chamber's air inlet pipe 9 is provided with inside the firing chamber 4, in the bottom of the firing chamber 4 and the deslagging unit Connection, the wet flue gas entrance 21 connected by pipeline with wet flue gas outlet 12 is provided with the firing chamber top;
The deslagging unit includes slag removing chamber 5, the outlet connection slag remover 6 of the slag removing chamber 5, in the slag removing chamber 5 Bottom is provided with fire grate 8 of slagging tap, and slag removing chamber's ash bucket 7 is provided with the lower surface of the fire grate 8 of slagging tap;
The air input block includes air blower 18, by pipeline respectively with the dry thermal cracking blast pipe 11, described Pyrolytic gasification air inlet pipe 10 connects with firing chamber's air inlet pipe 9, in the air blower 18 and the dry thermal cracking blast pipe 11 Between be provided with high-temperature air preheater 16, Cryogenic air is provided between the air blower 18 and the pyrolytic gasification air inlet pipe 10 Preheater 17.
Further, high temperature air is provided between the dry thermal cracking blast pipe 11 and the high-temperature air preheater 16 to adjust Save valve 13.
Further, Cryogenic air is provided between the pyrolytic gasification air inlet pipe 10 and the low-temperature air preheater 17 to adjust Save valve 19.
Further, normal temperature air regulating valve 20 is provided between firing chamber's air inlet pipe 9 and the air blower 18.
Further, dry thermal cracking room rotary furnace bar 14, pyrolysis vaporizer's rotary furnace bar 15 and described slag tap Fire grate 8 being capable of activity.
Further, dry thermal cracking room rotary furnace bar 11 and pyrolysis vaporizer's rotary furnace bar 10 can use fire grate generation Replace.
The method that pyrolysis wet flue gas recycles is carried out to house refuse by described device, including:
1. fuel is placed on dry thermal cracking room rotary furnace bar 14 and is lighted;
2. put into the dry thermal cracking room 2 from the garbage inlet 1 by rubbish;
3. starting the air blower 18, natural wind is by the high-temperature air preheater 16, from the dry thermal cracking air intake Pipe 11 enters the dry thermal cracking room 2 so that and rubbish is fully contacted with high temperature air, and rubbish is dried, and in the dry heat Capacity reducing and partial thermal decomposition reaction occur for the bottom for solving room 2;
4. by the rotation of dry thermal cracking room rotary furnace bar 14, the pyrolysis vaporizer 3 is fallen into by the rubbish of capacity reducing Pyrolysis vaporizer's rotary furnace bar 15 on;
5. natural air is introduced pipeline by the air blower 18, and after the low-temperature air preheater 17 preheating, The pyrolysis vaporizer 3 is entered by the pyrolytic gasification air inlet pipe 10, fully contacted with rubbish;
6. rubbish carries out anoxycausis, pyrolytic gasification reaction;
7. the wet flue gas on the top of dry thermal cracking room 2 is in the presence of the negative pressure of pyrolytic gasification gas vent 22, from The outflow of wet flue gas outlet 12, enters the top of firing chamber 4, through the pyrolysis vaporizer by the wet flue gas entrance 21 3, with the scorching hot carbon on pyrolysis vaporizer's revolving burner fire bars 15 water gas reaction, caused pyrolytic gasification gas occur for wet flue gas Pyrolytic gasification gas vent 22 described in body from the top of pyrolysis vaporizer 3 is discharged;
8. lime-ash falls into the firing chamber 4 by the rotation of pyrolysis vaporizer's rotary furnace bar 15;
After 9. natural air introduces pipeline by the air blower 18, the roasting is entered by firing chamber's air inlet pipe 9 Room 4 is burnt, is sufficiently mixed and burns with lime-ash, further removes the carbon residue in lime-ash;
10. lime-ash the firing chamber 4 by sufficient oxygen burning after, caused high temperature carbon dioxide gas, in the pyrolysis Through the pyrolysis vaporizer 3 under the guiding of 22 negative pressure of gasifying gas outlet, carbon monoxide is reduced to, from the pyrolytic gasification Gas vent 22 is discharged;
11. fired clinker ignition loss qualified lime-ash up to standard, falling into the described of the slag removing chamber 5 and slagging tap on fire grate 8, then lead to The activity of the fire grate 8 of slagging tap is crossed, the slag remover 6 is sent into according to default speed.
Divided by the high temperature air regulating valve 13, the Cryogenic air regulating valve 19 and the normal temperature air regulating valve 20 Tiao Jie high temperature air enter the high temperature air amount of the dry thermal cracking room 2, Cryogenic air enters the low of the pyrolysis vaporizer 3 Warm air amount and normal temperature air enter the normal temperature air amount of the firing chamber 4.
Pass through dry thermal cracking room rotary furnace bar 14, pyrolysis vaporizer's rotary furnace bar 15 and the fire grate 8 of slagging tap The translational speed of the material of the dry thermal cracking room 2, the pyrolysis vaporizer 3 and the slag removing chamber 4 is adjusted respectively.
The utility model is not limited to above-mentioned embodiment, in the case of without departing substantially from the utility model in essence content, this Any deformation, improvement, the replacement that art personnel are contemplated that each fall within the scope of protection of the utility model.

Claims (6)

1. a kind of domestic garbage pyrolysis wet flue gas recycling device, it is characterised in that including body of heater unit, deslagging unit and sky Gas input block, the deslagging unit are arranged at the bottom of the body of heater unit, and the air input block passes through pipeline and institute State the connection of body of heater unit;
The body of heater unit includes being arranged at is used to put into the charging aperture of rubbish at the top of body of heater, and the lower section of the charging aperture is from upper Dry thermal cracking room, pyrolysis vaporizer and firing chamber are followed successively by under;
The dry thermal cracking room rotary furnace bar for being used for carrying fuel is provided with the inside of the dry thermal cracking room, on the top of the body of heater Portion exports provided with wet flue gas, and in the dry thermal cracking room, the top of rotary furnace bar is provided with dry thermal cracking blast pipe;
Pyrolysis vaporizer's rotary furnace bar is provided with the inside of the pyrolysis vaporizer, in the upper of pyrolysis vaporizer's rotary furnace bar Side is provided with pyrolytic gasification air inlet pipe, and pyrolytic gasification gas vent is provided with the pyrolysis vaporizer top;
Firing chamber's air inlet pipe is provided with inside the firing chamber, is connected in the bottom of the firing chamber with the deslagging unit, The firing chamber top is provided with the wet flue gas entrance with the wet flue gas outlet by pipeline;
The deslagging unit includes slag removing chamber, the outlet connection slag remover of the slag removing chamber, is provided with the bottom of the slag removing chamber Slag tap fire grate, slag removing chamber's ash bucket is provided with the lower surface of the fire grate of slagging tap;
The air input block includes air blower, by pipeline respectively with the dry thermal cracking blast pipe, the pyrolytic gasification Air inlet pipe is connected with firing chamber's air inlet pipe, and high temperature air is provided between the air blower and the dry thermal cracking blast pipe Preheater, low-temperature air preheater is provided between the air blower and the pyrolytic gasification air inlet pipe.
2. device according to claim 1, it is characterised in that the dry thermal cracking blast pipe preheats with the high temperature air High temperature air regulating valve is provided between device.
3. device according to claim 1, it is characterised in that the pyrolytic gasification air inlet pipe preheats with the Cryogenic air Cryogenic air regulating valve is provided between device.
4. device according to claim 1, it is characterised in that be provided between firing chamber's air inlet pipe and the air blower Normal temperature air regulating valve.
5. device according to claim 1, it is characterised in that dry thermal cracking room rotary furnace bar, the pyrolytic gasification Room rotary furnace bar and the fire grate of slagging tap being capable of activities.
6. device according to claim 5, it is characterised in that dry thermal cracking room rotary furnace bar and the pyrolytic gasification Room rotary furnace bar is replaced with fire grate.
CN201720150510.6U 2017-02-20 2017-02-20 A kind of domestic garbage pyrolysis wet flue gas recycling device Expired - Fee Related CN207019072U (en)

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CN201720150510.6U CN207019072U (en) 2017-02-20 2017-02-20 A kind of domestic garbage pyrolysis wet flue gas recycling device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106678824A (en) * 2017-02-20 2017-05-17 长沙超梵环境科技有限公司 Household garbage pyrolytic wet smoke cyclic utilization device and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106678824A (en) * 2017-02-20 2017-05-17 长沙超梵环境科技有限公司 Household garbage pyrolytic wet smoke cyclic utilization device and method

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Granted publication date: 20180216