CN106838917A - The anoxybiotic pyrolysis treatment systems and method of a kind of rubbish - Google Patents
The anoxybiotic pyrolysis treatment systems and method of a kind of rubbish Download PDFInfo
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- CN106838917A CN106838917A CN201710098176.9A CN201710098176A CN106838917A CN 106838917 A CN106838917 A CN 106838917A CN 201710098176 A CN201710098176 A CN 201710098176A CN 106838917 A CN106838917 A CN 106838917A
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 186
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims description 21
- 239000007787 solid Substances 0.000 claims abstract description 150
- 238000009434 installation Methods 0.000 claims abstract description 68
- 239000000969 carrier Substances 0.000 claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000011084 recovery Methods 0.000 claims abstract description 26
- 239000002918 waste heat Substances 0.000 claims abstract description 26
- 238000000926 separation method Methods 0.000 claims abstract description 23
- 238000001035 drying Methods 0.000 claims abstract description 20
- 238000013467 fragmentation Methods 0.000 claims abstract description 11
- 238000006062 fragmentation reaction Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 66
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 36
- 239000003546 flue gas Substances 0.000 claims description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 33
- 238000007599 discharging Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 230000018044 dehydration Effects 0.000 claims description 8
- 238000006297 dehydration reaction Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000010079 rubber tapping Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000006477 desulfuration reaction Methods 0.000 claims description 4
- 230000023556 desulfurization Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 239000003595 mist Substances 0.000 claims description 4
- 239000010815 organic waste Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 3
- 238000005422 blasting Methods 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims description 2
- 238000003672 processing method Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 235000019504 cigarettes Nutrition 0.000 claims 2
- 239000004744 fabric Substances 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 6
- 241000273930 Brevoortia tyrannus Species 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 7
- 238000004939 coking Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000003034 coal gas Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004056 waste incineration Methods 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 1
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000007953 anoxia Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A kind of anoxybiotic pyrolysis treatment systems of rubbish,Including pretreatment unit,Pyrolysis installation,Solid thermal carriers stove,Purifier,Intermediate bunker,Wherein pretreatment unit includes separation unit,Fragmentation cell,Drying unit,And separation unit,Fragmentation cell,Drying unit is sequentially connected in series,Drying unit is connected with pyrolysis installation,Pyrolysis installation connects purifier respectively,Intermediate bunker,And solid thermal carriers stove includes burner hearth,Gas-solid separating device,Waste heat recovery unit,Material returning device,And waste heat recovery unit includes air preheater,Economizer,Superheater,Purifier is connected by two pipelines with the burner hearth in fuel element,And intermediate bunker is connected with the material returning device of solid thermal carriers stove,In solid thermal carriers stove,Material returning device connects burner hearth,Burner hearth connects gas-solid separating device,Gas-solid separating device connects pyrolysis installation and waste heat recovery unit respectively,Waste heat recovery unit includes superheater,Economizer and air preheater.
Description
Technical field
The invention belongs to technical field of waste treatment, and in particular to the anoxybiotic pyrolysis treatment systems and method of a kind of rubbish.
Background technology
Over nearly 20 years, as Urbanization in China is accelerated, the substantial amounts and ever-increasing municipal refuse of yield is right
City and greenbelt ecological environment constitute the threat that is on the rise.The Sanitary Landfill Technology and composting technology for commonly using are
It is difficult to tackle the reality of rubbish high yield, government changes this present situation by increasing waste incineration ratio, but waste incineration
The secondary environmental pollution problem such as dioxin emission can be brought, causes the fear that people are huge.So solving living garbage pollution
It is critical only that renewal technology of garbage disposal.
Refuse pyrolysis treatment technology is to make the organic compound in rubbish under anoxybiotic or anoxia condition, using making of heat energy
The chemical combination key fracture of compound, fuel gas, liquid fuel and the coke of small-molecular-weight are changed into by the organic matter of macromolecule
Process.Organic principle rubbish can be carried out stabilizing harmless treatment and recycling, with its energy utilization rate higher
With relatively low secondary pollution discharge and be considered as waste incineration technology of garbage disposal of future generation.Its main feature is exactly harmless
Change, resource degree are high, it is possible to prevente effectively from the discharge of bioxin, alleviates atmosphere pollution.
Compared with anaerobic pyrolysis technique, the thermal decomposition product calorific value produced by anoxybiotic pyrolytic process is high, and calorific value is relatively stablized, secondary
Pollution products are lower.But in the anoxybiotic pyrolytic process of rubbish, for indirectly heat technique, pyrolysis installation is at high temperature by warm
Source makes rubbish carry out thermal cracking rubbish indirectly heat, and rubbish programming rate is slow, and treatment effeciency is not high, and temperature is uneven in equipment
Even, rubbish heats up after being changed into molten condition, is extremely easily bonded on reaction tank skin and axle, and coking occurs, not only influence heat transfer,
And pipeline is blocked, and it is allowed to effectively to be pyrolyzed, while the product of coking cannot also be removed, make equipment steady in a long-term
Operation；For double tower fluidized bed pyrolysis technique, the technique pyrolysis installation is fluid bed, and it is stream to use the coal gas after steam or purification
Change medium, to the pyrolytic process with steam as fluidizing agent, produce and cooling fluidization steam vapor energy consumption is big, to purify coal gas as stream
Change the pyrolytic process of medium, the dedusting of coal gas, cooling, pressurization energy consumption are big, the high energy consumption of existing process operation, and the overall thermal efficiency is not
It is high.
Therefore, our field of garbage disposal are badly in need of one kind and avoid equipment coking and blocking, stable, thermal efficiency anoxybiotic high
Pyrolytic technique.
The content of the invention
It is an object of the invention to provide the anoxybiotic pyrolysis treatment systems and method of a kind of rubbish, it is to avoid equipment coking is blocked up
Plug, and it is stable, the thermal efficiency is high.
Technical scheme is as follows：A kind of anoxybiotic pyrolysis treatment systems of rubbish, including pretreatment unit, pyrolysis dress
Put, solid thermal carriers stove, purifier, intermediate bunker, wherein pretreatment unit include separation unit, fragmentation cell, dry list
Unit, and separation unit, fragmentation cell, drying unit be sequentially connected in series, drying unit is connected with pyrolysis installation, and pyrolysis installation connects respectively
Purifier, intermediate bunker are connect, and solid thermal carriers stove includes burner hearth, gas-solid separating device, waste heat recovery unit, material returning device,
And waste heat recovery unit includes air preheater, economizer, superheater, purifier is by two pipelines and fuel element
Burner hearth is connected, and intermediate bunker is connected with the material returning device of solid thermal carriers stove, in solid thermal carriers stove, material returning device connection stove
Thorax, burner hearth connection gas-solid separating device, gas-solid separating device connects pyrolysis installation and waste heat recovery unit, waste heat recovery list respectively
Unit includes superheater, economizer and air preheater, and superheater, economizer and air preheater are sequentially connected in series, waste heat recovery
Unit is connected with chimney.
The pyrolysis installation includes feed arrangement, double-spiral structure, cylinder, gas outlet and discharging opening；Cylinder is used to hold
Screw is installed, the screw is used for rubbish in pyrolysis granulated garbage and high-temp solid heat carrier, the cylinder
The mixing and stirring of grain and high-temp solid heat carrier, the pyrolysis installation cylinder are provided with feeder, gas outlet and discharging opening, institute
The one end of bottom away from feeder that discharging opening is located at the cylinder is stated, the gas outlet is located at the top of the cylinder and is close to
The discharging opening is set.
Pyrolysis installation is horizontally disposed or its axis is horizontal by 0-30 ° of arrangement, the charging of pyrolysis installation when being in tilted layout
Device end is higher than discharge port end, the equal vertical level arrangement of remaining device.
The feed arrangement 2b is connected with the charging aperture of pyrolysis installation, and the feed arrangement 2b can realize that continuous uniform is fed
And ensure the sealing of equipment.
Solid thermal carriers stove mainly includes：Burner hearth, gas-solid separating device, waste heat recovery unit, air preheater, province's coal
Device, superheater, air blower, chimney；Pyrolysis oil and pyrolysis gas after carbon residue, purification are burnt in burner hearth；High temperature after burning
Flue gas and solid thermal carriers directly contact, quick heat exchange；High-temp solid heat carrier is carrying flake hearth-tapping secretly by high-temperature flue gas, into gas
Solid separation device；Flue gas and solid thermal carriers carry out one-level or two grades of gas solid separations in gas-solid separating device.High-temp solid heat
Carrier under gravity enter pyrolysis installation in rubbish mixed pyrolysis generation pyrolysis oil gas and carbon residue；After carbon residue and cooling
Solid thermal carriers return to hearth combustion by material returning device；High-temperature flue gas and built-in steam superheater, economizer change thermogenetic steaming
Vapour, the high-temperature flue gas after heat exchange are exchanged heat with the combustion air that air blower is blasted in air preheater, Mist heat recovering, are formed
Low-temperature flue gas；Last low-temperature flue gas are excluded from chimney.
A kind of processing method of the anoxybiotic pyrolysis treatment systems of rubbish, comprises the following steps：
S1：Pretreatment unit is pre-processed to form pyrolysis granulated garbage to rubbish；
Rubbish enter pretreatment unit in, and separation unit, fragmentation cell and drying unit be sequentially completed sorting, break
Broken, dehydration and drying, to form pyrolysis granulated garbage, pyrolysis organic waste grain diameter is 10mm-60mm；
S2：In S1 formed pyrolysis granulated garbage be transported in pyrolysis installation, and with the height from gas-solid separating device
Heat is transmitted to pyrolysis granulated garbage, high-temp solid heat carrier temperature drop by warm solid thermal carriers mixing, high-temp solid heat carrier
Low formation low-temperature solid heat carrier, and pyrolysis granulated garbage is pyrolyzed generation pyrolysis oil gas and carbon residue, carbon residue in pyrolysis installation
Intermediate bunker is fallen into low-temperature solid heat carrier；
S3：Enter in purifier from the pyrolysis oil gas of pyrolysis installation discharge；
S4：Carbon residue and low-temperature solid heat carrier in intermediate bunker send into burner hearth by material returning device, in hearth combustion；And
Pyrolysis oil and pyrolysis gas in purifier respectively enter burner hearth burning；In burner hearth burn after generation high-temperature flue gas with it is low
Warm solid thermal carriers directly contact, quick heat exchange, forms high-temp solid heat carrier again；
S5：High-temp solid heat carrier in S4 is entrained flake hearth-tapping in the presence of S4 high-temperature flue gas, into gas solid separation
Device；Realize separating in gas-solid separating device high temperature flue gas and high-temp solid heat carrier；High-temp solid heat carrier is again introduced into
In pyrolysis installation, the pyrolysis with formation in S1 generates pyrolysis oil gas and carbon residue with granulated garbage mixed pyrolysis；
S6：Carbon residue and low-temperature solid heat carrier in S2 burn in returning to burner hearth by material returning device；High temperature in S5
Flue gas completes heat exchange in built-in steam superheater and economizer, produces steam；High-temperature flue gas after heat exchange with by air blower
The air for blasting is exchanged heat in air preheater；
In the S2, pyrolysis granulated garbage and high-temp solid heat carrier are constantly mixed under double-stranded effect
Close, stir, pyrolysis granulated garbage is quick in the cylinder of pyrolysis installation with high-temp solid heat carrier to exchange heat and along drum shaft
Move in line direction；Inner barrel keeps sealing state, pyrolysis granulated garbage that generation pyrolysis oil gas and carbon residue are pyrolyzed in cylinder,
Pyrolysis oil gas rises to the upper space of cylinder by being pyrolyzed with granulated garbage surface, is finally pyrolyzed outlet of the oil gas from the top of cylinder
Mouth is excluded, and pyrolysis installation operating temperature is 500-950 DEG C.
Pyrolysis oil gas carries out dedusting, waste heat recovery, cooling, Oil-gas Separation, dehydration of tar, desulfurization depickling and adds in a device
Pressure.
In the S4, the temperature of high-temp solid heat carrier is 500-1050 DEG C；Pyrolysis organic granular is in pyrolysis installation
Residence time be 0.5-15min.
The treated all thermal decomposition products of solid thermal carriers stove burning, the solid thermal carriers stove fire box temperature is
500-1100℃。
Remarkable result of the invention is：Refuse disposal system according to embodiments of the present invention, rubbish and solid thermal carriers
Direct contact heat transfer, realizes mixing and exchanges heat, rubbish heating rate is fast, and rubbish can be realized under the screw drives of pyrolysis installation
The fast pyrogenation of rubbish, factor of created gase is high, and equipment size is small.
The present invention can reduce the threaded interior temperature difference, due to solid thermal carriers carrying, dispersion and souring, effectively
Prevent the generation of clogging；There is grinding agent additionally, due to solid thermal carriers, can be with self cleaning arrangement shell, spiral
The dirt of blade and axle portion, therefore the technique does not have the technical risk of coking, good operation stability.
The present invention is stirred mixing using mechanical device to granulated garbage and solid thermal carriers, it is not necessary to fluidizing agent,
Equipment energy consumption is low.The solid thermal carriers stove can both produce steam, solid thermal carriers can be heated again, and maintain solid thermal carriers
Circulation, number of devices is few, and investment cost is low.
, using anoxybiotic pyrolysis, pyrolysis gas calorific value is high, and coefficient of excess air needed for burning is low, and total exhaust smoke level is low for the present invention；Adopt
With pyrolysis gas depickling sulfur removal technology, flue gas acid dew point temperature is low, and flue gas low-temperature corrosion is small, and exhaust gas temperature is low；Equipment thermal efficiency
It is high.Solid thermal carriers kiln gas corrosivity is small, the good reliability of a large amount of heat transmission equipments in solid thermal carriers stove.
Brief description of the drawings
Fig. 1 is a kind of anoxybiotic pyrolysis treatment systems schematic diagram of rubbish of the present invention
Fig. 2 is a kind of anoxybiotic pyrolysis treatment systems pyrolysis installation schematic diagram of rubbish of the present invention
In figure：1 pretreatment system, 1a separation units, 1b fragmentation cells, 1c drying units, 2 pyrolysis installations, 2a charging dresses
Put, 2b double-spiral structures, 2c cylinders, 2d gas outlets, 2e discharging openings, 3 solid thermal carriers stoves, 3a burner hearths, 3b gas-solid separating devices,
3c waste heat recoveries unit, 3c3 air preheaters, 3c2 economizers, 3c1 superheaters, 3d material returning devices, 4 air blowers, 5 chimneys, 7 purifications
Device, 8 intermediate bunkers,
Specific embodiment
A kind of anoxybiotic pyrolysis treatment systems of rubbish, including pretreatment unit 1, pyrolysis installation 2, fuel element 3, purification dress
7, intermediate bunker 8 is put, wherein pretreatment unit 1 includes separation unit 1a, fragmentation cell 1b, drying unit 1c, and separation unit
1a, fragmentation cell 1b, drying unit 1c are sequentially connected in series, and drying unit 1c is connected with pyrolysis installation 2, and pyrolysis installation 2 is connected respectively
Purifier 7, intermediate bunker 8, and fuel element 3 includes burner hearth 3a, gas-solid separating device 3b, waste heat recovery unit 3c, returning charge
Device 3d, and waste heat recovery unit 3c includes air preheater 3c3, economizer 3c2, superheater 3c1, purifier 7 passes through two
Pipeline is connected with the burner hearth 3a in fuel element 3, and intermediate bunker 8 is connected with the material returning device 3d of solid thermal carriers stove, in solid
In heat carrier furnace 3, material returning device 3d connection burner hearth 3a, burner hearth 3a connection gas-solid separating device 3b, gas-solid separating device is connected respectively
Pyrolysis installation 2 and waste heat recovery unit 3c, waste heat recovery unit 3c include superheater 3c1, economizer 3c2 and air preheater
3c3, and superheater 3c1, economizer 3c2 and air preheater 3c3 be sequentially connected in series, the connection of air blower 4 air preheater 3c3, it is empty
Air preheater 3c3 is directly connected with burner hearth 3, and waste heat recovery unit 3c is connected with chimney 5.
Pretreatment unit 1 is pre-processed to form pyrolysis granulated garbage to rubbish.
Pyrolysis installation 2 receives pyrolysis granulated garbage and the high-temp solid heat carrier from gas-solid separating device 3b and by heat
Solution granulated garbage is decomposed into pyrolysis oil gas and carbon residue.Pyrolysis installation 2 includes：Feed arrangement 2a, double-spiral structure 2b, cylinder
2c, gas outlet 2d and discharging opening 2e.Cylinder 2c is used to hold pyrolysis granulated garbage and high-temp solid heat carrier, the cylinder 2c
The interior screw 2b, the screw 2b for installing the angled move toward one another of two cuffs is used for granulated garbage and high-temp solid
The mixing and stirring of heat carrier, the pyrolysis installation cylinder 2c are provided with feeder 2a, gas outlet 2d and discharging opening 2e, it is described go out
Material mouth 2e is located at the one end of bottom away from feeder 2a of the cylinder 2c, and the gas outlet 2d is located at the top of the cylinder 2c
And set near the discharging opening 2e.
Gas-solid separating device 3b, pyrolysis installation 2, intermediate bunker 8 and material returning device 3d, are sequentially arranged from high to low；Pyrolysis dress
2 horizontally disposed or pyrolysis installation axis are put horizontal by 0-30 ° of arrangement, the feed arrangement end of pyrolysis installation is high when being in tilted layout
In discharge port end, gas-solid separating device 3b, intermediate bunker 8 and the equal vertical level arrangements of material returning device 3d.
Refuse classification, broken and dehydration are completed by pretreatment unit 1, to form pyrolysis granulated garbage.Pyrolysis rubbish
Rubbish particle is transported in pyrolysis installation 2 and mixes with the high-temp solid heat carrier from gas-solid separating device 3b, pyrolysis rubbish
Grain and high-temp solid heat carrier constantly mix in the presence of double-spiral structure 2b, stirring, pyrolysis granulated garbage and high temperature
Solid thermal carriers are quick in the cylinder 2c of pyrolysis installation to exchange heat and is moved along tubular axis direction.Cylinder 2c inside keeps close
Envelope state, pyrolysis granulated garbage is pyrolyzed generation pyrolysis oil gas and carbon residue in cylinder 2c, and pyrolysis oil gas is by pyrolysis rubbish
Grain surface rises to the upper space of cylinder 2c, is finally pyrolyzed gas outlet 2d of the oil gas from the top of cylinder 2c and excludes, pyrolytic reaction
Solid thermal carriers after remaining carbon residue and cooling fall into intermediate bunker 8.
Enter in purifier 7 from the pyrolysis oil gas of the discharge of pyrolysis installation 2, pyrolysis oil gas carries out dedusting, remaining in device 7
Enter solid thermal carriers stove 3 after recuperation of heat, cooling, Oil-gas Separation, dehydration of tar, desulfurization depickling and pressurization.
Solid thermal carriers stove 3 mainly includes：Burner hearth 3a, gas-solid separating device 3b, waste heat recovery unit 3c, air preheater
3c3, economizer 3c2, superheater 3c1, air blower 4, chimney 5.
Carbon residue and solid thermal carriers in intermediate bunker 8 send into burner hearth through conveying pipeline by material returning device 3d under gravity
Burnt in 3a.Pyrolysis oil and pyrolysis gas are burnt into burner hearth 3a simultaneously.High-temperature flue gas after burning are direct with solid thermal carriers
Contact, quick heat exchange.High-temp solid heat carrier is carrying flake hearth-tapping 3a secretly by high-temperature flue gas, into gas-solid separating device 3b.Flue gas
One-level or two grades of gas solid separations are carried out in gas-solid separating device 3b with solid thermal carriers.High-temp solid heat carrier is in Action of Gravity Field
With rubbish mixed pyrolysis generation pyrolysis oil gas and carbon residue in lower entrance pyrolysis installation.Solid thermal carriers after carbon residue and cooling pass through
Material returning device 3d returns to burner hearth 3a burnings.High-temperature flue gas change thermogenetic steam, change with built-in steam superheater 3c1, economizer 3c2
The combustion air that high-temperature flue gas after heat are blasted with air blower 5 is exchanged heat in air preheater 3c3, Mist heat recovering, is formed
Low-temperature flue gas；Last low-temperature flue gas are excluded from chimney.What deserves to be explained is, material returning device 3d, gas-solid separating device 3b, steam superheating
Device 3c1, economizer 3c2, the operation principle of air preheater 3C3 have been well known to those skilled in the art, and just do not retouch in detail here
State.
Solid thermal carriers of the present invention are recycled in the system, and solid thermal carriers can fire for quartz sand, carbon residue
Remaining ash etc. after burning, but the heat carrier is not limited to the mixing of both quartz sand, carbon residue remaining after combustion ash and its arbitrary proportion
Thing, can be the strong particulate matter for meeting granularity requirements of any high temperature resistant heat storage ability.
A kind of anoxybiotic pyrolysis treating method of rubbish, comprises the following steps：
S1：Pretreatment unit 1 is pre-processed to form pyrolysis granulated garbage to rubbish；
Rubbish enters in pretreatment unit 1, and is sequentially completed point in separation unit 1a, fragmentation cell 1b and drying unit 1c
Select, crush, be dehydrated and dry, to form pyrolysis granulated garbage；Specific rubbish is weighed by special refuse collection lorry through weighbridge
Rubbish is poured into rubbish by device for discharging temporarily to store up in hole, then in rubbish feeding garbage sorting device 1a, in removing rubbish
Inorganic matter and metal ingredient, remaining organic waste by breaker 1b, by 2-3 grades of breaker, by refuse breaking
It is the granulated garbage of 10mm-60mm into particle diameter, subsequently into dump pit, rubbish stops 5-7 days to ensure filling for rubbish in hole
Point dehydration and mix, the moisture content of rubbish rubbish after dehydration is less than 30%, drying unit is by the aqueous of granulated garbage
Amount is reduced to 5%-25%, the sewage isolated qualified discharge after treatment.
S2：In S1 formed pyrolysis granulated garbage be transported in pyrolysis installation 2, and with from gas-solid separating device 3b
High-temp solid heat carrier mixing, (pyrolysis granulated garbage and high-temp solid heat carrier in the presence of double helix 2b constantly
Mixing, stirring, the heat exchange efficiency between pyrolysis granulated garbage and high-temp solid heat carrier are high.Pyrolysis granulated garbage is consolidated with high temperature
Body heat carrier is quick in the cylinder 2c of pyrolysis installation to exchange heat and is moved along tubular axis direction.Inner barrel keeps sealing shape
State, pyrolysis granulated garbage is pyrolyzed generation pyrolysis oil gas and carbon residue in cylinder 2c, and pyrolysis oil gas is by pyrolysis granulated garbage table
Face rises to the upper space of cylinder 2c, is finally pyrolyzed gas outlet 2d of the oil gas from the top of cylinder 2c and excludes), high-temp solid heat is carried
Heat is transmitted to pyrolysis granulated garbage by body, and high-temp solid heat carrier temperature reduces to form low-temperature solid heat carrier, and is pyrolyzed and is used
Granulated garbage is pyrolyzed generation pyrolysis oil gas and carbon residue in pyrolysis installation 2, and carbon residue and low-temperature solid heat carrier fall into intermediate bunker
8；
S3：Enter in purifier 7 from the pyrolysis oil gas of the discharge of pyrolysis installation 2, pyrolysis oil gas is removed in device 7
Dirt, waste heat recovery, cooling, Oil-gas Separation, dehydration of tar, desulfurization depickling and pressurization
S4：Carbon residue and low-temperature solid heat carrier in intermediate bunker 8 send into burner hearth 3a by material returning device 3d, in fluidization air
Under effect, in burner hearth 3a burnings；And the pyrolysis oil and pyrolysis gas in purifier 7 respectively enter burner hearth 3a burnings；In burner hearth 3a
Generation high-temperature flue gas and low-temperature solid heat carrier directly contact after burning, quick heat exchange form high-temp solid heat carrier again
S5：High-temp solid heat carrier in S4 is entrained flake hearth-tapping 3a in the presence of S4 high-temperature flue gas, into gas-solid point
From device 3b；Realize separating in gas-solid separating device 3b high temperatures flue gas and high-temp solid heat carrier, high-temp solid heat carrier
Temperature is 500-1050 DEG C；High-temp solid heat carrier is again introduced into pyrolysis installation 2, the pyrolysis granulated garbage with formation in S1
Mixed pyrolysis generation pyrolysis oil gas and carbon residue；
S6：Carbon residue and low-temperature solid heat carrier in S2 burn in returning to burner hearth 3a by material returning device 3d；High temperature in S5
Flue gas completes heat exchange in built-in steam superheater 3c1 and economizer 3c2, produces steam；High-temperature flue gas and process after heat exchange
The air that air blower 5 is blasted is exchanged heat in air preheater 3c3, Mist heat recovering, is finally discharged by chimney 6.
Some embodiments of the invention, pyrolysis installation 2 includes feed arrangement 2a.Wherein, feed arrangement 2a is located at heat
The front side of device is solved, with to continuous in cylinder 2c, uniform, dosing, and the sealing of pyrolysis installation 2 is kept.
Some embodiments of the invention, the operating temperature of pyrolysis installation 2 is 450-950 DEG C, solid thermal carriers temperature
It it is 500-1050 DEG C, residence time of the pyrolysis granulated garbage in pyrolysis installation is 0.5-15min.
Embodiments in accordance with the present invention, pyrolysis installation 2 is connected with intermediate bunker 8, intermediate bunker is used to adjust solid thermal load
The flow of body and fluctuation, make to may insure that device continuously runs during solid thermal carriers changes in flow rate, in addition the solid thermal in feed bin
Carrier and carbon residue bed of material isolation pyrolysis installation 2 and solid thermal carriers stove 3, it is ensured that the sealing of pyrolysis installation 2.
Some embodiments of the invention, for waste of low heating value, in pretreatment unit 1, set drying device 1c,
The water content of granulated garbage is reduced to by 5%-25% by drying device 1c.Wherein drying device 1c can be any form.
When the rubbish of high heating value is processed, drying device 1c can be not provided with.
Embodiments in accordance with the present invention, the fire box temperature of solid thermal carriers stove is 500 DEG C -1100 DEG C.
Claims (10)
1. anoxybiotic pyrolysis treatment systems of a kind of rubbish, it is characterised in that：Including pretreatment unit (1), pyrolysis installation (2), Gu
Body heat bearer boiler (3), purifier (7), intermediate bunker (8), wherein pretreatment unit (1) include separation unit (1a), broken
Unit (1b), drying unit (1c), and separation unit (1a), fragmentation cell (1b), drying unit (1c) be sequentially connected in series, and dries single
First (1c) is connected with pyrolysis installation (2), and pyrolysis installation (2) connects purifier (7), intermediate bunker (8) respectively, and solid thermal is carried
Body stove (3) includes burner hearth (3a), gas-solid separating device (3b), waste heat recovery unit (3c), material returning device (3d), and waste heat recovery list
First (3c) includes air preheater (3c3), economizer (3c2), superheater (3c1), and purifier (7) is by two pipelines and combustion
Burner hearth (3a) connection in unit (3) is burnt, and intermediate bunker (8) is connected with the material returning device (3d) of solid thermal carriers stove, in solid
In heat carrier furnace (3), material returning device (3d) connects burner hearth (3a), and burner hearth (3a) connects gas-solid separating device (3b), gas solid separation dress
Connection pyrolysis installation (2) respectively and waste heat recovery unit (3c) are put, waste heat recovery unit (3c) includes superheater (3c1), saves coal
Device (3c2) and air preheater (3c3), and superheater (3c1), economizer (3c2) and air preheater (3c3) be sequentially connected in series,
Waste heat recovery unit (3c) is connected with chimney (5).
2. anoxybiotic pyrolysis treatment systems of a kind of rubbish according to claim 1, it is characterised in that：The pyrolysis installation
(2) including feed arrangement (2a), double-spiral structure (2b), cylinder (2c), gas outlet (2d) and discharging opening (2e)；Cylinder (2c) is used
In holding screw (2b), the spiral are installed in pyrolysis granulated garbage and high-temp solid heat carrier, the cylinder (2c)
Device (2b) is used for the mixing and stirring of granulated garbage and high-temp solid heat carrier, is set on the pyrolysis installation (2) cylinder (2c)
Have feeder (2a), gas outlet (2d) and a discharging opening (2e), the discharging opening (2e) be located at the bottom of the cylinder (2c) away from
One end of feeder (2a), the gas outlet (2d) is located at the top of the cylinder (2c) and is set near the discharging opening (2e)
Put.
3. anoxybiotic pyrolysis treatment systems of a kind of rubbish according to claim 2, it is characterised in that：Pyrolysis installation (2) water
Plain cloth is put or its axis is horizontal by 0-30 ° of arrangement, and feed arrangement (2a) end of pyrolysis installation (2) is higher than when being in tilted layout
Material mouth end, the equal vertical level arrangement of remaining device.
4. anoxybiotic pyrolysis treatment systems of a kind of rubbish according to claim 3, it is characterised in that：The feed arrangement
(2b) is connected with the charging aperture of pyrolysis installation, and the feed arrangement (2b) is capable of achieving continuous uniform and is fed and ensures the sealing of equipment
Property.
5. anoxybiotic pyrolysis treatment systems of a kind of rubbish according to claim 1, it is characterised in that：Solid thermal carriers stove 3
Mainly include：Burner hearth (3a), gas-solid separating device (3b), waste heat recovery unit (3c), air preheater (3c3), economizer
(3c2), superheater (3c1), air blower (4), chimney (5)；Pyrolysis oil and pyrolysis gas after carbon residue, purification is in burner hearth (3a)
Burning；High-temperature flue gas and solid thermal carriers directly contact after burning, quick heat exchange；High-temp solid heat carrier is by high-temperature flue gas
Entrainment flake hearth-tapping (3a), into gas-solid separating device (3b)；Flue gas and solid thermal carriers are carried out in gas-solid separating device (3b)
One-level or two grades of gas solid separations；High-temp solid heat carrier under gravity enter pyrolysis installation in rubbish mixed pyrolysis generate
Pyrolysis oil gas and carbon residue；Solid thermal carriers after carbon residue and cooling return to burner hearth (3a) and burn by material returning device (3d)；High temperature cigarette
Gas and built-in steam superheater (3c1), economizer (3c2) change thermogenetic steam, the high-temperature flue gas after heat exchange and air blower (5)
The combustion air for blasting is exchanged heat in air preheater (3c3), Mist heat recovering, forms low-temperature flue gas；Last low-temperature flue gas
Excluded from chimney (5).
6. the processing method of the anoxybiotic pyrolysis treatment systems of a kind of rubbish, it is characterised in that：Comprise the following steps：
S1：Pretreatment unit (1) is pre-processed to form pyrolysis granulated garbage to rubbish；
Rubbish enters in pretreatment unit (1), and complete successively in separation unit (1a), fragmentation cell (1b) and drying unit (1c)
Into sorting, crush, be dehydrated and dry, to form pyrolysis granulated garbage, pyrolysis organic waste grain diameter is 10mm-
60mm；
S2：In S1 formed pyrolysis granulated garbage be transported in pyrolysis installation (2), and with from gas-solid separating device (3b)
High-temp solid heat carrier mixes, and heat is transmitted to pyrolysis granulated garbage, high-temp solid heat carrier temperature by high-temp solid heat carrier
Reduction forms low-temperature solid heat carrier, and the pyrolysis generation in pyrolysis installation (2) of pyrolysis granulated garbage is pyrolyzed oil gas and carbon residue,
Carbon residue and low-temperature solid heat carrier fall into intermediate bunker (8)；
S3：Enter in purifier (7) from the pyrolysis oil gas of pyrolysis installation (2) discharge；
S4：Carbon residue and low-temperature solid heat carrier in intermediate bunker (8) send into burner hearth (3a) by material returning device (3d), in burner hearth
(3a) burns；And the pyrolysis oil and pyrolysis gas in purifier (7) respectively enter burner hearth (3a) burning；Combustion in burner hearth (3a)
Generation high-temperature flue gas and low-temperature solid heat carrier directly contact after burning, quick heat exchange form high-temp solid heat carrier again；
S5：High-temp solid heat carrier in S4 is entrained flake hearth-tapping (3a) in the presence of S4 high-temperature flue gas, into gas solid separation
Device (3b)；Realize separating in gas-solid separating device (3b) high temperature flue gas and high-temp solid heat carrier；High-temp solid heat carrier
It is again introduced into pyrolysis installation (2), the granulated garbage mixed pyrolysis of the pyrolysis with formation in S1 generate pyrolysis oil gas and carbon residue；
S6：Carbon residue and low-temperature solid heat carrier in S2 burn in returning to burner hearth (3a) by material returning device (3d)；In S5
High-temperature flue gas complete heat exchange in built-in steam superheater (3c1) and economizer (3c2), produce steam；High temperature cigarette after heat exchange
Gas is exchanged heat with the air blasted by air blower (5) in air preheater (3c3).
7. the anoxybiotic pyrolysis treating method of a kind of rubbish according to claim 6, it is characterised in that：In the S2, pyrolysis
Constantly mixed in the presence of double-spiral structure (2b) with granulated garbage and high-temp solid heat carrier, stirred, pyrolysis rubbish
Particle is quick in the cylinder (2c) of pyrolysis installation (2) with high-temp solid heat carrier to exchange heat and is moved along tubular axis direction；
Inner barrel keeps sealing state, pyrolysis granulated garbage pyrolysis generation pyrolysis oil gas and carbon residue, pyrolysis oil in cylinder (2c)
Gas rises to the upper space of cylinder (2c) by being pyrolyzed with granulated garbage surface, is finally pyrolyzed oil gas going out from the top of cylinder (2c)
Gas port (2d) is excluded, and pyrolysis installation (2) operating temperature is 500-950 DEG C.
8. the anoxybiotic pyrolysis treating method of a kind of rubbish according to claim 6, it is characterised in that：In the S3, pyrolysis
Oil gas carries out dedusting, waste heat recovery, cooling, Oil-gas Separation, dehydration of tar, desulfurization depickling and pressurization in device (7).
9. the anoxybiotic pyrolysis treating method of a kind of rubbish according to claim 6, it is characterised in that：In the S4, high temperature
The temperature of solid thermal carriers is 500-1050 DEG C；Residence time of the pyrolysis organic granular in pyrolysis installation (2) is 0.5-
15min。
10. a kind of anoxybiotic pyrolysis treating method of rubbish according to claim 6, it is characterised in that solid thermal carriers stove
The treated all thermal decomposition products of burning, the solid thermal carriers stove fire box temperature is 500-1100 DEG C.
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| CN112735625A (en) * | 2021-01-07 | 2021-04-30 | 广州维港环保科技有限公司 | Equipment and process for treating organic matters by utilizing heat carrier |
| CN116948667A (en) * | 2023-08-21 | 2023-10-27 | 武汉天源环保股份有限公司 | Carbonization anaerobic pyrolysis process and system for solid waste |
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Application publication date: 20170613 |