CN105861001A - Internal-and-external-heating and indirection-direction-heating combining moving-bed pyrolysis method and system - Google Patents
Internal-and-external-heating and indirection-direction-heating combining moving-bed pyrolysis method and system Download PDFInfo
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- CN105861001A CN105861001A CN201610352205.5A CN201610352205A CN105861001A CN 105861001 A CN105861001 A CN 105861001A CN 201610352205 A CN201610352205 A CN 201610352205A CN 105861001 A CN105861001 A CN 105861001A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B51/00—Destructive distillation of solid carbonaceous materials by combined direct and indirect heating
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- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Coke Industry (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses an internal-and-external-heating and indirection-direction-heating combining moving-bed pyrolysis method and system, and belongs to the technical field of waste pyrolysis. The internal-and-external-heating and indirection-direction-heating combining moving-bed pyrolysis method includes the steps of indirect heating through a threaded-rod hollow shaft of a threaded-rod pyrolyzing device and direct heating through hot flue gas; flue gas after waste is heated through the flue gas can also be continuously used for drying to-be-pyrolyzed waste to allow the heat amount of the flue gas to be fully recycled, pyrolyzed solid products are subjected to heat exchange through cold air, formed hot air is used for predrying waste, and the hot flue gas is subjected to heat preservation in the transmission process. The pyrolysis system comprises the threaded-rod pyrolyzing device, a heater, a waste feeding system, a burner, a waste dryer and a pyrolyzed-solid-product collecting and cooling unit. According to the internal-and-external-heating and indirection-direction-heating combining moving-bed pyrolysis method and system, as effective combination of the internal-and-external-heating mode and the indirection-direction-heating mode, the evenness of the temperature of the threaded-rod pyrolyzing device and the stability of the quality of the pyrolyzed products are improved, the heat transferring efficiency is improved, and heat losses are decreased; as the flue gas of the burner, gas heated by pyrolyzed solid products and the waste dryer are effectively combined, the heat efficiency of the system is improved.
Description
Technical field
The method and apparatus that the present invention relates to pyrolysis of waste, particularly to external heat in one, indirectly and directly
Add the moving bed pyrolysis method and system of thermal, belong to pyrolysis of waste technical field.
Background technology
The energy is the basis that modern society depends on for existence and development, though the development and utilization of fossil energy is beneficial to development
Economy, but too increase pollutant emission, compromise the general level of the health of ecological environment and people, development cleaning can
The renewable sources of energy have become urgent problem.There is huge solid waste resource in China, as various agriculture and forestry organic waste materials,
Mud and rubbish etc., pyrolysis is the important of minimizing, innoxious, stabilisation and these discarded objects of recycling treatment
Method, its main advantage is that reaction speed is fast, compact conformation, floor space are little, adaptability to raw material is strong, pollutes
Thing discharge is little, has fundamentally stopped the generation of the pollutants such as the dioxin that waste combustion brought, its research and development,
Popularize the energy resource structure and ecological environment to improving China significant.
Current pyrolysis of waste technology mainly includes drum reactor, screw reactor, fluid bed, multicell
Stoves etc., mode of heating directly heats and indirectly heats；Mode of heating mainly has electrical heating, heating using microwave, electricity
Magnetic induction heating, hot gas heating, the heating of hot particle and the directly or indirectly heating of other heat transfer medium etc..No matter
Be direct or indirectly heat pyrolytic technique, the subject matter that China presently, there are be discarded object be heated uneven,
Unstable product quality, malfunction, heat transfer efficiency are low, for directly heating pyrolytic technique, and thermal decomposition product
The impact of the most heated gas componant of quality；Be badly in need of exploitation energy self-balancing, be heated evenly, product quality
The pyrolysis system stable, flexible operation, heat transfer efficiency are high.
Summary of the invention
Present invention aim to address that existing pyrolysis installation discarded object is heated uneven, unstable product quality, behaviour
Make the problem that the dumb and thermal efficiency is relatively low, it is provided that a kind of energy self-balancing and improve being heated evenly property of discarded object and
The method of system thermal efficiency, and then develop a kind of pyrolysis of waste system realizing preceding method.
Realizing the object of the invention technical scheme is:
A kind of interior external heat, indirectly and directly add the moving bed pyrolysis method of thermal, it is characterised in that: use
Screw rod pyrolysis apparatus (3), the pyrolysis gas of generation enters through pyrolysis gas cooler (21), air-introduced machine (22)
Entering burner (2), generate heat smoke after burning, this flue gas is for the heating of screw rod pyrolysis apparatus (3), at screw rod
The screw rod hollow shaft (5) of pyrolysis apparatus (3) is internally formed the indirect heating of the discarded object treating pyrolysis, and indirectly
The flue gas of heating is co-current flow with discarded object to be pyrolyzed；From the internal flue gas one out of screw rod hollow shaft (5)
It is partially into that screw rod pyrolysis apparatus (3) is internal to be directly heated discarded object and flue gas and material are co-current flow,
Discarded object drier (1) is entered to discarded object from the internal flue gas another part out of screw rod hollow shaft (5)
Directly or indirectly heat.Screw rod pyrolysis apparatus (3) outside uses electromagnetic induction heating, heating using microwave, electricity
Heating or high-efficiency insulated mode.Pyrolysis discarded object is treated in screw rod pyrolysis apparatus (3) screw rod rotary motion has stirring mixed
Close and promote the effect of heat transfer；Pyrolysis solid product, through cold air heat exchange, forms hot-air for discarded object
Predrying, dried discarded object is transported to screw rod pyrolysis apparatus (3) by discarded object feed system (10)；Heat
Flue gas all takes Insulation, burner (2), fume collection device (15) at transmitting procedure peripheral pipeline
Heat-insulation layer is had with various outside flues.
Realize above-mentioned a kind of interior external heat, indirectly and directly add the system of the moving bed pyrolysis method of thermal, bag
Include discarded object drier (1), discarded object feed system (10), screw rod pyrolysis unit, burner (2), cigarette
Gas collector (15), pyrolysis solid resultant product collection unit, pyrolysis solid product cooler (7), wherein discard
Thing drier (1), discarded object feed system (10), screw rod pyrolysis unit are sequentially connected with；Described screw rod is pyrolyzed
Unit includes screw rod pyrolysis apparatus (3), and screw rod pyrolysis apparatus (3) is internal has pyrolysis apparatus screw rod (4), pyrolysis apparatus
The axle of screw rod (4) is hollow shaft (5), and the tail end of screw rod pyrolysis apparatus (3) is provided with fume collection device (15),
Hollow shaft (5) is internal is fixed with thermal chimney (14), the gas of the screw rod pyrolysis apparatus (3) of screw rod pyrolysis unit
Body delivery outlet connects connection, pyrolysis gas removal pipe (13) and pyrolysis gas cooler with pyrolysis gas removal pipe (13)
(21) connection connects, and pyrolysis gas cooler (21) connects connection, air-introduced machine with air-introduced machine (22)
(22) connection is connected with burner (2)；Burner (2) connects connection with thermal chimney (14),
Thermal chimney (14) connects connection, fume collection device (15) by hollow shaft (5) with fume collection device (15)
Connecting with fume pipe one (16), fume pipe one (16) is pyrolyzed with discarded object drier (1), screw rod respectively
Device (3) connection connects；Screw rod pyrolysis apparatus (3) connects connection with pyrolysis solid product blanking device (12),
Pyrolysis solid product blanking device (12) and pyrolysis solid resultant product collection device (6) are by rotary valve discharger or valve
Door connection connects, and is pyrolyzed solid product conveyer (18) by pyrolysis solid product by thermal decomposition product collector (6)
Being transported to be pyrolyzed solid product cooler (7), pyrolysis solid product is received by being pyrolyzed solid product holding vessel (8)
Collect and store；Described pyrolysis solid product cooler (7) uses cold air cooling pyrolysis solid product, heat exchange
After hot-air directly connect with discarded object drier (1) through hot gas outlet duct (17) and be connected；Pyrolysis is solid
It is predrying that the hot-air of body product cooler (7) may be used for discarded object, and dried discarded object is by discarded
Thing feed system (10) is transported to screw rod pyrolysis apparatus (3).The outside additional microwave of screw rod pyrolysis apparatus (3) sets
Standby, electric heater unit, electromagnetic induction heater or heat-insulation layer.
Above-mentioned a kind of interior external heat, indirectly and directly add the moving bed pyrolysis method and system of thermal, described useless
Gurry feed system (10) includes discarded object conveyer (11), screw rod distributor (19), rotary valve feeder
(20) or locking hopper feeder, screw rod distributor (19) uses screw rod transmission design to make discarded object material equal
Even one or more rotary valve feeder (20) being transported to below.Rotary valve feeder (20) plays gas lock
Acting on avoiding air to enter pyrolysis apparatus, meanwhile, steam and volatile matter pressure inside pyrolysis apparatus prevent air
Flow into；Discarded object drier (1) is with discarded object conveyer (11) but connects two equipment connected, also
Collection is dried and is transported in an equipment of one；Drier can use Conveyorized drier or screw rod to move
The patterns such as bed, fluid bed, van-type, drum-type, air-flowing type, oscillatory type.
Above-mentioned a kind of interior external heat, indirectly and directly add the moving bed pyrolysis method and system of thermal, described heat
Solve solid resultant product collection unit to include being pyrolyzed solid product feed opening (12) and pyrolysis solid resultant product collection device (6),
Rotary valve (or valve is passed through between pyrolysis solid product feed opening (12) and pyrolysis solid resultant product collection device (6)
Door) and pipeline connection, set between pyrolysis solid resultant product collection device (6) and pyrolysis solid product cooler (7)
Be equipped with pyrolysis solid product conveyer (18), use screw rod transmission and pyrolysis solid resultant product collection device (6) and
Between cooler (7) section use appropriateness extruding and material envelope design with realize pyrolysis solid resultant product collection device (6) and
Being effectively isolated of cooler (7), air or inert gas also can be in pyrolysis solid resultant product collection device (6) and coolings
Device injects to strengthen sealing gland between (7), simultaneously pyrolysis solid product rotary valve discharger have gas lock effect in case
Only the air of pyrolysis solid product cooler (7) the inside enters screw rod pyrolysis apparatus (3), and screw rod pyrolysis apparatus (3) is inner
The steam in face and volatile matter pressure also prevent the inflow of air.
A kind of interior external heat, indirectly and directly add the moving bed pyrolysis method and system of thermal, it is characterised in that:
Screw rod pyrolysis apparatus (3) outside uses heating using microwave, electromagnetic induction heating, electrical heating or efficient insulation layer, from
Externally heating improves dry inside pyrolysis apparatus and the Temperature Distribution of pyrolysis zone；During heating using microwave, screw rod pyrolysis apparatus
(3) housing uses pottery or quartz material, and screw rod uses strengthens graphite, pottery or metal material；Work as screw rod
When pyrolysis apparatus (3) uses electromagnetic induction heating, screw rod pyrolysis apparatus (3) housing uses ferrous metal or carbon steel material
Material, screw rod uses metal material；When screw rod pyrolysis apparatus (3) uses electrical heating, screw rod pyrolysis apparatus (3) shell
Body and screw rod use carbon steel, stainless steel or other heat resisting steel material.
Above-mentioned a kind of interior external heat, indirectly and directly add the moving bed pyrolysis method and system of thermal, pyrolysis apparatus
Screw rod (4) is hollow, and screw rod pyrolysis apparatus (3) is real by the fume pipe of screw rod hollow shaft (5) and the inside
Heating indirectly in existing, thermal chimney (14) has the groove of indent at the outer surface that screw rod hollow shaft (5) is internal
Or the thrust of evagination, increase flue gas to form the air flue of cross-sectional area alternately change with the inwall of hollow shaft
Turbulent flow inside hollow shaft and heat transfer efficiency.
Above-mentioned a kind of interior external heat, indirectly and directly add the moving bed pyrolysis method and system of thermal, pyrolysis apparatus
The fixing employing cantilever design of the thermal chimney (14) that screw rod hollow shaft (5) is internal, in fume collection device (15)
End is fixing, or fixes at screw rod two ends respectively；The screw rod hollow shaft (5) of pyrolysis apparatus can be at screw rod pipeline
Or at the radial center of hopper, it is also possible to radial asymmetrical is arranged and is made hollow shaft below screw rod pipeline or hopper
Inwall at, promote hollow shaft and the heat transfer of discarded object, also make between screw rod blade tip and bottom hopper simultaneously
Gap shortens, and makes blade the most more effectively promote material to move forward and promote rolling and the mixing of material.
Above-mentioned a kind of interior external heat, indirectly and directly add the moving bed pyrolysis method and system of thermal, screw rod heat
Solve the product gas of device (3) by pyrolysis gas removal pipe (13), pyrolysis gas cooler (21) and air-introduced machine (2
2) it is transported in burner (2), pyrolysis gas removal pipe (13) and entrance pyrolysis apparatus screw rod hollow shaft (5)
Thermal chimney (14) the most side-by-side and insulating is set outside its whole pipeline；Described hot cigarette
Tracheae (14) be exposed air part, fume collection device (15), fume pipe one (16) outside have insulation
Layer.
Above-mentioned a kind of interior external heat, indirectly and directly add the moving bed pyrolysis method and system of thermal, pyrolysis apparatus
Being screw reactor, the screw rod of pyrolysis apparatus is hollow, and screw rod pyrolysis apparatus passes through the hollow shaft of screw rod and reaches it
The thermal chimney of the inside realize in indirectly heating, in hollow shaft, fume pipe outer surface has the groove of indent or evagination
Thrust increases heat smoke hollow to form the air flue of cross-sectional area alternately change with the inwall of hollow shaft
Turbulent flow inside axle and improve heat transfer efficiency further.Microwave applicator outside screw rod pyrolysis apparatus or electromagnetic induction
Heater or electric heater heat pyrolysis apparatus and discarding inside it together with the heat smoke inside screw rod hollow shaft
Thing, makes discarded object internal/external heating more uniform.The screw rod hollow shaft of pyrolysis apparatus can be at screw rod pipeline or hopper
At radial center, it is also possible to radial asymmetrical is arranged and made hollow shaft inwall below screw rod pipeline or hopper
Place, promotes hollow shaft and the heat transfer of discarded object, also makes the gap of screw rod blade tip and bottom hopper shorten simultaneously,
Blade is made the most more effectively to promote material to move forward and promote rolling and the mixing of material.Hollow from screw rod
Inside axle flue gas out be partly into inside screw rod pyrolysis apparatus discarded object is directly heated and flue gas and
Material is co-current flow, and inside screw rod hollow shaft, flue gas another part out enters discarded object drier to discarded
Thing directly or indirectly heats.From pyrolysis apparatus pyrolysis gas duct out and the hot cigarette of entrance screw rod hollow shaft
Tracheae is the most side-by-side and arranges insulating outside two pipelines, to ensure the temperature of pyrolysis gas duct
Degree prevents pyrolysis gas from condensing.Pyrolysis gas removes pipe, pyrolysis gas cooler and air-introduced machine through pyrolysis gas,
Burner and air mixed combustion, its flue gas is for the indirectly and directly heating system of screw rod pyrolysis apparatus.Discarded object
Feed system includes discarded object conveyer, screw rod distributor and rotary valve feeder, and screw rod distributor is by discarded object
Material is respectively delivered to one or more rotary valve feeder, rotary valve feeder and the material above it and plays gas lock
Effect, steam and pyrolysis gas pressure inside pyrolysis apparatus are also prevented from air and enter pyrolysis from discarded object feed system
Device.At pyrolysis apparatus end, pyrolysis solid resultant product collection unit includes being pyrolyzed solid product blanking device, pyrolysis solid
Product rotary valve discharger and pyrolysis solid resultant product collection device, pyrolysis solid product blanking device collects consolidating of pyrolysis apparatus
Body product, is transported to be pyrolyzed solid resultant product collection device by rotary valve discharger.Use pyrolysis solid product conveying
Device further will pyrolysis solid product screw rod transmission to cooler, this screw rod is being pyrolyzed solid resultant product collection device and cold
But use between device conveying extruding design to realize pyrolysis solid resultant product collection device and being effectively isolated of cooler, empty
Gas or inert gas also can inject to strengthen sealing gland, pyrolysis apparatus between pyrolysis solid resultant product collection device and cooler
With the rotary valve discharger between pyrolysis solid resultant product collection device realizes pyrolysis apparatus and pyrolysis solid resultant product collection device
Between be effectively isolated, steam in pyrolysis apparatus and pyrolysis gas pressure also prevent gas from pyrolysis solid product
Cooler flows backward to pyrolysis apparatus.It is pyrolyzed the hot-air of solid product heating from being pyrolyzed solid product cooler through pipe
Road connection is delivered to discarded object pre-dryer, thus improves systematic heat utilization rate.
The purpose of the present invention also includes above-mentioned a kind of application heating pyrolysis apparatus, i.e. uses pyrolysis apparatus
Heating using microwave, electrical heating, electromagnetic induction heating or heat-insulation layer；Outside additional microwave equipment, electricity at pyrolysis apparatus
Heater, electromagnetic induction heater or heat-insulation layer；During heating using microwave, screw rod pyrolysis apparatus (3) housing is adopted
With pottery or quartz material, screw rod uses strengthens graphite, pottery or metal material；When screw rod pyrolysis apparatus (3)
When using electromagnetic induction heating, screw rod pyrolysis apparatus (3) housing uses ferrous metal or carbon steel material, and screw rod is adopted
Use metal material；When screw rod pyrolysis apparatus (3) uses electrical heating, screw rod pyrolysis apparatus (3) housing and screw rod are adopted
By carbon steel, stainless steel or other heat resisting steel material.The main body of pyrolysis apparatus is screw reactor, including level or perpendicular
Straight screw reactor, single screw rod or Multiple-screw reactor.
The present invention has a positive effect: the screw rod pyrolysis apparatus of (1) the inventive method or system be interior external heat,
Indirectly and directly add the moving-burden bed reactor of thermal, make inside and outside being heated of the temperature of pyrolysis apparatus and discarded object more
Add uniformly, it is to avoid discarded object hot-spot；(2) heating using microwave or electromagnetic induction is had to add outside screw rod pyrolysis apparatus
Heat or electrical heating, with the material inside pyrolysis apparatus externally heating；During heating using microwave, screw rod pyrolysis apparatus housing is adopted
With pottery or quartz material, screw rod uses strengthens graphite, pottery or metal material；Electromagnetic induction heating or electricity add
During heat, screw rod pyrolysis apparatus housing and screw rod all use metal material；Heat-insulation layer is may also set up outside screw rod pyrolysis apparatus；
(3) screw rod of pyrolysis apparatus is hollow, and screw rod pyrolysis apparatus passes through the hollow shaft of screw rod and reaches the cigarette inside it
Tracheae realize in indirectly heating, in hollow shaft fume pipe outer surface have the groove of indent or the thrust of evagination with
The inwall of hollow shaft forms the air flue of cross-sectional area alternately change thus increases flue gas turbulent flow inside hollow shaft
And heat transfer efficiency；Add the stirring immixture of pyrolysis apparatus screw rod, make being uniformly heated of discarded object material
Avoid the generation of hot-spot phenomenon；(4) design of the screw rod distributor of discarded object feed system makes it have
The function of uniform discarded object material, makes each screw reactor of single screw rod or multiscrew pyrolysis apparatus can have uniformly
Material distributes；(5) pyrolysis solid resultant product collection device and cooler use the conveying extruding design of screw rod to realize material
Envelope, also can input inert gas or air to strengthen sealing gland between pyrolysis solid resultant product collection device and cooler；Useless
The rotary valve feeder of gurry charging and the rotary valve discharger of pyrolysis solid product realize pyrolysis apparatus and upstream and downstream
The isolation of unit, steam and pyrolysis gas pressure in pyrolysis apparatus prevent air to enter pyrolysis apparatus；(6) from heat
The thermal chimney that pyrolysis apparatus screw rod hollow shaft was managed and entered in the pyrolysis gas removal out of solution device is the most side-by-side
And insulating is set outside two pipelines, to ensure that the temperature of pyrolysis gas duct prevents pyrolysis gas from coagulating
Knot.
Accompanying drawing explanation
It is clearly understood to make present disclosure be easier to, below according to specific embodiment and combine attached
Figure, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of the present invention a kind of pyrolysis of waste system；
The structural representation of Fig. 2 another kind of the present invention pyrolysis of waste system；
Wherein:
1 discarded object drier, 2 burners, 3 screw rod pyrolysis apparatus, 4 pyrolysis apparatus screw rods, 5 screw rod hollow shafts, 6
Pyrolysis solid resultant product collection device, 7 pyrolysis solid product coolers, 8 pyrolysis solid product holding vessels, 9 pyrolysis
Device heater, 10 discarded object feed systems, 11 discarded object conveyers, 12 pyrolysis solid product blanking devices, 13
Pyrolysis gas removal pipe, 14 thermal chimneys, 15 fume collection devices, 16 fume pipe one, 17 hot gas outlet ducts,
18 pyrolysis solid product conveyers, 19 screw rod distributors, 20 rotary valve feeders, 21 pyrolysis gas condensers,
22 air-introduced machines.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described, but the present invention is not limited to following example.
Embodiment 1
See that Fig. 1, the present embodiment include that screw rod pyrolysis apparatus 3, screw rod pyrolysis apparatus 3 use single screw reactor, outward
Face is pyrolysis apparatus heater 9 and uses heating using microwave, and screw rod pyrolysis apparatus 3 housing uses pottery or quartz material,
Screw rod uses metal material (or strengthening graphite, ceramic material).The axle of pyrolysis apparatus screw rod is hollow, burning
The heat smoke of device 2 enters screw rod hollow shaft 5 through thermal chimney 14 and realizes interior indirect heating, and heat smoke and
Material inside screw rod pyrolysis apparatus 3 is co-current flow, and screw rod hollow shaft 5 inner fume pipe outer surface has multiple indent
Groove or the thrust of evagination；The screw rod hollow shaft 8 of pyrolysis apparatus is at the radial center of screw rod pipeline；From spiral shell
The internal flue gas out of bar hollow shaft 5, through fume collection device 15 and fume pipe 1, is partly into screw rod
Pyrolysis apparatus 3 is internal to be directly heated discarded object and flue gas and material are co-current flow, and another part enters useless
Discarded object is directly or indirectly heated by gurry drier 1.Screw rod rotary motion is treated pyrolysis discarded object and is stirred
Mix mixing and promote the effect of heat transfer, this interior external heat and the direct mode of heating indirectly adding thermal, make to give up
Gurry internal/external heating is more uniform.Pyrolysis gas is through pyrolysis gas removal pipe 13, pyrolysis gas cooler 21 and draws
Blower fan 22 enters burner 2, and air mixed combustion produces flue gas；Fume pipe 1 and fume collection device
15, screw rod pyrolysis apparatus 3 connects connection with discarded object drier 1；From the internal flue gas out of screw rod hollow shaft 5
By fume collection device 15 and fume pipe 1, it is partly into screw rod pyrolysis apparatus 3 inside and discarded object is carried out
Directly heating and flue gas and material are co-current flow, another part enters discarded object drier 1 to be carried out discarded object
Directly or indirectly heating.Through pyrolysis gas removal pipe 13 and screw rod is entered from screw rod pyrolysis apparatus pyrolysis gas out
The thermal chimney 14 of hollow shaft 5 is the most side-by-side and arranges insulating outside two pipelines and (or joins
Standby heating tape), to ensure that the temperature of pyrolysis gas removal pipe 13 prevents pyrolysis gas from condensing, pyrolysis gas is in burning
With air mixed combustion in device 2, its flue gas is for the indirectly and directly heating system of screw rod pyrolysis apparatus 3.Pyrolysis
Solid product enters pyrolysis solid resultant product collection device 6 through pyrolysis solid product blanking device 12, rotary valve discharger,
It is transported to be pyrolyzed solid product cooler 7 and pyrolysis solid product holding vessel by pyrolysis solid product conveyer 18
8.Cold air, through pyrolysis solid product cooler 7 heat exchange, forms hot-air and enters discarded object drier 1
Directly being dried discarded object, heat smoke all takes Insulation in transmitting procedure.
Discarded object feed system 10 includes discarded object conveyer 11, screw rod distributor 19 and rotary valve feeder
20, discarded object material is transported to following 1 rotary valve feeder 20 from feed bin distribution by screw rod distributor 19,
Rotary valve feeder 20 and the material above it play material envelope and gas lock effect, the steaming inside screw rod pyrolysis apparatus 3
Vapour and pyrolysis gas pressure prevent air from entering in pyrolysis apparatus from discarded object feed system.In pyrolysis apparatus end, heat
Solve solid product to be transported to be pyrolyzed solid resultant product collection device 6 through blanking device 12, rotary valve discharger.Use pyrolysis
Solid product conveyer 18 is by pyrolysis solid product screw rod transmission to cooler 7, and this screw rod uses conveying extruding
Designing the material envelope to realize pyrolysis solid resultant product collection device 6 and cooler 7, air or inert gas also can be in warm
Solving and inject to strengthen sealing gland between solid product collector 3 and cooler 13, screw rod pyrolysis apparatus 3 and pyrolysis are solid
Thermal decomposition product rotary valve discharger between body product collector 6 realizes screw rod pyrolysis apparatus 3 and pyrolysis solid product
Being effectively isolated between collector 6, steam and pyrolysis gas pressure in pyrolysis apparatus also prevent gas from cooling
Device 7 flows backward to screw rod pyrolysis apparatus 3.It is pyrolyzed the hot-air of solid product heating from pyrolysis solid product cooler
7 connect through hot gas outlet duct 17 and to be delivered to discarded object drier 1 thus improve systematic heat utilization rate.Spiral shell
Bar pyrolysis apparatus 3, burner 2, fume collection device 15 and all flues have insulating.
Embodiment 2
See Fig. 1, be pyrolysis apparatus heater 9 outside the present embodiment screw rod pyrolysis apparatus 3 and use electromagnetic induction heating,
Screw rod pyrolysis apparatus housing uses ferrous metal or carbon steel material etc., and screw rod uses metal material, other same embodiment
1。
Embodiment 3
See Fig. 1, be pyrolysis apparatus heater 9 outside the present embodiment screw rod pyrolysis apparatus 3 and use electrical heating, screw rod
Pyrolysis apparatus housing and screw rod use metal material, the other the same as in Example 1.
Embodiment 4
See that Fig. 1, the present embodiment screw rod pyrolysis apparatus 3 use double-screw reactor, outside to be efficient insulation layers, spiral shell
Bar pyrolysis apparatus housing and screw rod use metal material, the other the same as in Example 1.
Embodiment 5
See that Fig. 2, the present embodiment drier are the drying equipments that collection was dried and was transported in one, use screw rod transmission
Machine formula drier or screw rod moving bed dryer, its screw rod uses hollow shaft, from the cigarette of fume collection device 15
Gas enters drier screw rod hollow shaft through fume pipe 1 and indirectly heats discarded object, from drier screw rod
Hollow shaft flue gas out is partly into screw rod pyrolysis apparatus 3, and another part enters discarded object drier 1 to useless
Gurry carries out the most predrying；Pre-dried discarded object is entered by the hot-air from pyrolysis solid product cooler 7
One step is dried.Inside discarded object drier 1, dried material is directly divided to screw rod by drier 1 screw rod transmission
Orchestration 19 and rotary valve feeder 20, and then enter screw rod pyrolysis apparatus 3, the other the same as in Example 1.
Particular embodiments described above, has carried out entering one to the purpose of the present invention, technical scheme and beneficial effect
Step describes in detail, be it should be understood that the specific embodiment that the foregoing is only the present invention, is not used to
Limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement done
Deng, should be included within the scope of the present invention.
Claims (9)
1. external heat in a kind, indirectly and directly add the moving bed pyrolysis method of thermal, it is characterised in that: use screw rod pyrolysis apparatus
(3), the pyrolysis gas of generation enters burner (2) through pyrolysis gas cooler (21), air-introduced machine (22), generates heat after burning
Flue gas, this flue gas is for the heating of screw rod pyrolysis apparatus (3), the internal shape of screw rod hollow shaft (5) at screw rod pyrolysis apparatus (3)
Become to treat the indirect heating of the discarded object of pyrolysis, and the flue gas of heating indirectly is co-current flow with discarded object to be pyrolyzed；From screw rod
The internal flue gas out of hollow shaft (5) is partly into screw rod pyrolysis apparatus (3) inside and directly heats discarded object and cigarette
Gas and material are co-current flow, and the internal flue gas another part out of screw rod hollow shaft (5) enters discarded object drier (1)
Discarded object is directly or indirectly heated；Screw rod pyrolysis apparatus (3) outside uses electromagnetic induction heating, heating using microwave, electricity
Heating or heat preserving mode；Pyrolysis discarded object is treated in screw rod pyrolysis apparatus (3) screw rod rotary motion to be had stirring mixing and promotes heat transfer
Effect；Pyrolysis solid product, through cold air heat exchange, forms hot-air and is used for the predrying of discarded object, dried discarded
Thing is transported to screw rod pyrolysis apparatus (3) by discarded object feed system (10)；Heat smoke is all adopted at transmitting procedure peripheral pipeline
Take Insulation.
2. realize a kind of interior external heat described in claim 1, indirectly and directly add the system of the moving bed pyrolysis method of thermal,
It is characterized in that, including discarded object drier (1), discarded object feed system (10), screw rod pyrolysis unit, burner (2),
Fume collection device (15), pyrolysis solid resultant product collection unit, pyrolysis solid product cooler (7), wherein discarded object is dried
Device (1), discarded object feed system (10), screw rod pyrolysis unit are sequentially connected with；Described screw rod pyrolysis unit includes screw rod heat
Solving device (3), screw rod pyrolysis apparatus (3) is internal has pyrolysis apparatus screw rod (4), and the axle of pyrolysis apparatus screw rod (4) is hollow shaft (5),
The tail end of screw rod pyrolysis apparatus (3) is provided with fume collection device (15), and hollow shaft (5) is internal is fixed with thermal chimney (14),
The gas delivery port of the screw rod pyrolysis apparatus (3) of screw rod pyrolysis unit connects connection, pyrolysis gas with pyrolysis gas removal pipe (13)
Removal pipe (13) connects connection, pyrolysis gas cooler (21) and air-introduced machine (22) with pyrolysis gas cooler (21)
Connection connects, and air-introduced machine (22) connects connection with burner (2)；Burner (2) and thermal chimney (14) are even
Leading to connect, thermal chimney (14) connects connection, fume collection device (15) by hollow shaft (5) with fume collection device (15)
Connecting with fume pipe one (16), fume pipe one (16) is respectively with discarded object drier (1), screw rod pyrolysis apparatus (3) even
Lead to connect；Screw rod pyrolysis apparatus (3) connects connection with pyrolysis solid product blanking device (12), is pyrolyzed solid product blanking device
(12) connecting connection with pyrolysis solid resultant product collection device (6) by rotary valve discharger or valve, pyrolysis solid product is defeated
Device (18) is sent to be transported to be pyrolyzed solid product cooler (7), heat by pyrolysis solid product by thermal decomposition product collector (6)
Solve solid product to be collected by being pyrolyzed solid product holding vessel (8) and store；Described pyrolysis solid product cooler (7) uses
Cold air cooling pyrolysis solid product, directly connects with discarded object drier (1) through hot gas outlet duct (17) after heat exchange
Connect；Outside additional microwave equipment, electric heater unit, electromagnetic induction heater or the heat-insulation layer of screw rod pyrolysis apparatus (3).
System the most according to claim 2, it is characterised in that: described discarded object feed system (10) includes that discarded object carries
Machine (11), screw rod distributor (19), rotary valve feeder (20) or include locking hopper feeder；Discarded object drier
(1) it is to connect two equipment connected with discarded object conveyer (11), or collection is dried and is transported in integrally and sets
Standby；Discarded object drier (1) uses Conveyorized drier or screw rod moving bed, fluid bed, van-type, drum-type, air-flow
Formula or oscillatory type pattern.
System the most according to claim 2, it is characterised in that: described pyrolysis solid resultant product collection unit includes that being pyrolyzed solid produces
Thing feed opening (12) and pyrolysis solid resultant product collection device (6), pyrolysis solid product feed opening (12) and pyrolysis solid product
Being connected by rotary valve or valve and pipeline between collector (6), pyrolysis solid resultant product collection device (6) is produced with pyrolysis solid
It is provided with pyrolysis solid product conveyer (18) between thing cooler (7), uses screw rod transmission and receive at pyrolysis solid product
Between storage (6) and cooler (7), section uses appropriateness extruding and material envelope design to realize pyrolysis solid resultant product collection device (6)
With being effectively isolated of cooler (7), air or inert gas pyrolysis solid resultant product collection device (6) and cooler (7) it
Between inject to strengthen sealing gland, simultaneously pyrolysis solid product rotary valve discharger have gas lock effect with prevent be pyrolyzed solid product cooling
The air of device (7) the inside enters screw rod pyrolysis apparatus (3), and steam and the volatile matter pressure of screw rod pyrolysis apparatus (3) the inside are also prevented from
The inflow of air.
A kind of system the most according to claim 2, it is characterised in that: thermal chimney (14) is internal in screw rod hollow shaft (5)
Outer surface have the groove of indent or the thrust of evagination.
6. according to a kind of system described in Claims 2 or 3, it is characterised in that: the hot cigarette that pyrolysis apparatus screw rod hollow shaft (5) is internal
The fixing employing cantilever design of tracheae (14), fixing at fume collection device (15) end, or fix at screw rod two ends respectively；
The screw rod hollow shaft (5) of pyrolysis apparatus is at the radial center of screw rod pipeline or hopper, or makes hollow with radial asymmetrical layout
At axle inwall below screw rod pipeline or hopper.
System the most according to claim 2, it is characterised in that: the product gas of screw rod pyrolysis apparatus (3) is by pyrolysis gas removal pipe
(13), pyrolysis gas cooler (21) and air-introduced machine (22) be transported in burner (2), pyrolysis gas removal pipe (13)
With enter pyrolysis apparatus screw rod hollow shaft (5) thermal chimney (14) the most side-by-side and outside its whole pipeline arrange
Insulating；Described thermal chimney (14) is exposed air part, fume collection device (15), fume pipe one (16)
There is heat-insulation layer outside.
8. the application that pyrolysis apparatus is heated, it is characterised in that i.e. pyrolysis apparatus is used heating using microwave, electrical heating, electromagnetism
Sensing heating or heat-insulation layer；Outside additional microwave equipment, electric heater unit, electromagnetic induction heater or guarantor at pyrolysis apparatus
Temperature layer；During heating using microwave, screw rod pyrolysis apparatus (3) housing uses pottery or quartz material, and screw rod uses strengthens graphite, pottery
Porcelain or metal material；When screw rod pyrolysis apparatus (3) uses electromagnetic induction heating, screw rod pyrolysis apparatus (3) housing uses irony
Metal or carbon steel material, screw rod uses metal material；When screw rod pyrolysis apparatus (3) uses electrical heating, screw rod pyrolysis apparatus (3)
Housing and screw rod use carbon steel, stainless steel or other heat resisting steel material.
9. according to a kind of application that pyrolysis apparatus is heated described in claim 8, it is characterised in that the main body of pyrolysis apparatus is spiral shell
Bar reactor, including horizontal or vertical screw reactor, single screw rod or Multiple-screw reactor.
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| CN201610352205.5A CN105861001B (en) | 2016-05-25 | 2016-05-25 | A kind of interior external heat, the moving bed pyrolysis method and system for indirectly and directly heating combination |
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| CN112393247A (en) * | 2020-10-27 | 2021-02-23 | 南京万德斯环保科技股份有限公司 | Low-temperature thin-layer quick-heating gradient anaerobic pyrolysis system and solid waste pyrolysis system based on same |
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