CN110529854A - A kind of spiral roller type refuse pyrolysis system and method - Google Patents
A kind of spiral roller type refuse pyrolysis system and method Download PDFInfo
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- CN110529854A CN110529854A CN201910689052.7A CN201910689052A CN110529854A CN 110529854 A CN110529854 A CN 110529854A CN 201910689052 A CN201910689052 A CN 201910689052A CN 110529854 A CN110529854 A CN 110529854A
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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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- 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
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
-
- 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
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The invention discloses a kind of spiral roller type refuse pyrolysis systems, including spiral roller type pyrolysis reactor, the feed inlet of spiral roller type pyrolysis reactor is connected with dry feed system in turn, the high-temperature flue gas heat exchange coil of spiral roller type pyrolysis reactor is connect with combustion system, first spiral pressure roller of spiral roller type pyrolysis reactor is connect with driving device, the exhaust outlet of spiral roller type pyrolysis reactor is connect with gas-solid separator, the gas outlet of gas-solid separator is connect with pyrolysis gas condenser system, the gas outlet of pyrolysis gas condenser system is connect with combustible gas air accumulator and combustion system, the leakage fluid dram of pyrolysis gas condenser system is connect with liquid collecting box.Engagement roll-type refuse pyrolysis system of the invention, solving the problems, such as raw refuse, antipyretic that there are heat consumptions is big, is difficult to adapt to complicated component of refuse and be easy to cause secondary pollution.The invention also discloses a kind of spiral roller type refuse pyrolysis methods.
Description
Technical field
The invention belongs to garbage as resource utilize with innoxious process for treating field, more particularly to a kind of spiral roller type rubbish
Rubbish pyrolysis system further relates to a kind of spiral roller type refuse pyrolysis method.
Background technique
With increased population and expanding economy, more and more cities are faced with the status in house refuse besieged city, this has become
For worldwide trend.House refuse is the adjunct of urban development, and due to the needs of the operating of city and people, every annual meeting generates more than one hundred million
The rubbish of ton.It is the ever-increasing rubbish scale of construction on one side, is gradually stringent environmental requirement on one side, if not high-efficiency cleaning
Processing means, excessive rubbish will become the primary threat of people's life health, be that future development cleaning city must solve
Problem.
Domestic waste can be divided mainly into three types: the degradable garbages such as organic rubbish from cooking, toilet paper, shell,
The poisonous and harmful rubbish such as the recyclable rubbishes such as waste paper, plastics, glass, metal and battery, fluorescent tube, Expired drug.Since the country is raw
Garbage classification living is not in place, it is difficult to is handled using suitable classification all kinds of rubbish.Currently, domestic rubbish disposal is common
Method has sanitary landfills, compost and burning.Current house refuse mostly uses land-fill method to handle greatly, it has easy to operate, suitable
The advantages of Ying Xingguang, but the problems such as also be easy to cause underground water pollution, shortage of land resource, greenhouse gas emission.Compost treatment
The biochemical action by microorganism, under manual control condition by organic matter decomposition in house refuse, it is decomposed, be converted into stablizing
Similar humus soil method, but current technology is also difficult to handle the chlorine, benzene and heavy metal etc. contained in house refuse and has
Evil substance, can not be directly as Fertilizer application.The mode of burning can kill the germ in house refuse, volume reduction reduced training
Good, the energy that can use consumer waste incineration carries out power generation and heat supply, but SOx, NOx, HCl, two evils can be generated in burning process
The pollutants such as English, polycyclic aromatic hydrocarbon and easily cause secondary pollution.
For the severe situation in house refuse besieged city, in recent years, more and more scholars are dedicated to rubbish novel process mode
Research, such as biochemical treatment or pyrolysis processing etc..Wherein, domestic waste is handled using pyrolytic technique, there is raw material
The advantages that wide, process cycle is short, high conversion efficiency is adapted to, can contain the generation of the harmful substances such as dioxin, while can will live
The gas-liquid fuels that waste component is converted into convenient for utilizing.At present the pyrolytic technique based on the raw materials such as coal, biomass more at
It is ripe, but the raw refuse without Screening Treatment is also difficult to be applicable in.There is very big ask using nature refuse pyrolysis
Topic: (1) moisture content is high and fluctuation is big, simultaneously because pyrolytic process sheet as endothermic process, needs constantly neatly to pyrolysis
Reactor provides amount of heat；(2) waste component is complicated, fluctuation is big, and is easy to be influenced by factors such as season, sources, existing
Pyrolysis reactor is difficult to rapidly adapt to be pyrolyzed the variation of required condition；(3) contain the pollution elements such as a large amount of Cl, Hg, place in rubbish
Secondary pollution is easily caused during reason.Therefore how problem above is solved, is the current emphasis for developing refuse pyrolysis reactor.
Summary of the invention
The first purpose of this invention is the provision of a kind of spiral roller type refuse pyrolysis system, to solve raw refuse
It is antipyretic to there are problems that heat consumption is big, be difficult to adapt to complicated component of refuse and be easy to cause secondary pollution.
In order to reach above-mentioned first purpose, the first technical solution of the present invention is a kind of spiral roller type rubbish
Rubbish pyrolysis system, comprising:
Spiral roller type pyrolysis reactor, the spiral roller type pyrolysis reactor includes closed container, on the closed container
It is provided with feed inlet, slag-drip opening and exhaust outlet, the feed inlet is connected with dry feed system, and rotation is provided in closed container
Intermeshing first spiral pressure roller and the second spiral pressure roller, and rubbish enters from feed inlet and falls in the first spiral pressure roller and the
The engagement place of two spiral pressure rollers；The roll shaft of the first spiral pressure roller and the second spiral pressure roller is hollow structure, roll shaft
It is internally provided with high-temperature flue gas heat exchange coil, the first spiral pressure roller is connected with driving device；
Gas-solid separator, the air inlet of the gas-solid separator are connect with the exhaust outlet, and gas-solid separator bottom is consolidated
Body outlet and the slag-drip opening are connect with solid collecting box；
Pyrolysis gas condenser system, the air inlet of the pyrolysis gas condenser system and the gas outlet of gas-solid separator connect, heat
The inlet communication with combustible gas air accumulator and combustion system, the outlet of combustion system pass through respectively for the gas outlet for condenser system of venting one's spleen
Flue gas pressure charging system is connect with one end of high-temperature flue gas heat exchange coil, the other end of high-temperature flue gas heat exchange coil successively with it is dry into
Material system is connected to flue gas purification system, and the leakage fluid dram of pyrolysis gas condenser system bottom is connect with liquid collecting box.
The characteristics of the first of the invention technical solution, also resides in,
The dry feed system is screw-feeder or belt conveyor with heating tube.
The flue gas pressure charging system is high temperature pressurised blower or high-temperature gas compressor.
The pyrolysis gas condenser system is spray condenser and/or falling film condenser.
The first spiral pressure roller and the second spiral pressure roller are angularly disposed side by side, gap 1mm-10mm, inclination angle
It is 10 ° -30 °.
The tooth of the first spiral pressure roller and the second spiral roller surface helical tooth height, transverse tooth thickness and screw pitch are roller diameter
1/20-1/5。
Second object of the present invention is the provision of a kind of spiral roller type refuse pyrolysis method, to solve raw refuse
It is antipyretic to there are problems that heat consumption is big, be difficult to adapt to complicated component of refuse and be easy to cause secondary pollution.
In order to reach above-mentioned second purpose, second of technical solution of the present invention is a kind of spiral roller type rubbish
Rubbish method for pyrolysis, is specifically implemented according to the following steps:
Step 1. is dried rubbish using dry feed system, and is delivered to spiral shell to the rubbish after drying process
Revolve roll-type pyrolysis reactor；
The high-temperature flue gas of step 2. combustion system discharge is passed through high-temperature flue gas heat exchange coil, by the first spiral pressure roller and described
Second spiral pressure roller heating is to 400 DEG C -650 DEG C, roll effect of the rubbish in the first spiral pressure roller and the second spiral pressure roller
Under thermally decomposed, thermally decompose generation solids be detained 5s-30s after be discharged into solid collecting box, thermally decompose the gas of generation
It is discharged into gas-solid separator after being detained 0.2s-2s；
After step 3. gas separates in gas-solid separator, obtained gas is discharged into pyrolysis gas condenser system, is obtained
Powdery solid is discharged into solid collecting box；
After step 4. gas is discharged into pyrolysis gas condenser system, obtained gas is discharged into combustible gas air accumulator and combustion system
In, obtained liquid is discharged into liquid collecting box；
The high-temperature flue gas of step 5. high-temperature flue gas heat exchange coil discharge is discharged after flue gas purification system is handled.
Second of technical solution of the invention, also has the following characteristics that
In step 1, rubbish is pre-processed before entering dry feed system, and the pretreatment includes removal metal rubbish
Rubbish, shredding refuse and increases additive into rubbish.
In step 2, the revolving speed of the first spiral pressure roller and the second spiral pressure roller is 0.1r/min-1r/min.
In the step 5, flue gas purification system by the way of absorption, chilling, washing to high-temperature flue gas carry out denitration,
Dedusting, dechlorination, desulfurization and inhibition dioxin generation processing.
The beneficial effects of the present invention are: spiral roller type refuse pyrolysis plant of the invention, core is engagement roll-type pyrolysis
Reactor, by screening, being crushed, drying pretreated rubbish fragment by high temperature to roller (initiative compression roller and driven rollers)
Positively engaging rolls, and is further torn, and is brought rapidly up pyrolysis；The pyrolysis gas of generation rapid condensation after gas solid separation obtains
Bio oil, advantage specifically include that (1) heat transfer efficiency height: by two bands tooth high temperature pressure roller (initiative compression roller and driven rollers)
The positively engaging of rubbish fragment is rolled, coming into full contact between high temperature roll surface and rubbish is realized, heat exchange is strong, keeps its fast
Speed is thermally decomposed；(2) gouging abrasion of alleviator: due to being to carry out forcing to roll heat transfer by the pressure of pressure roller, without making
Solid is carried with the heat for being also easy to produce abrasion, alleviates the gouging abrasion between rubbish and device metal component；(3) pyrolytic reaction condition
Regulation is convenient: by controlling the charging rate of rubbish, the revolving speed of the ignition temperature of flue gas, pressure and flow, pressure roller, replacement is different
The pressure roller of tooth form and size is convenient to adjust the parameters such as required pyrolysis reaction temperature, reaction time, heat transfer area, from
And according to the rubbish of different component, regulate and control different pyrolytic reaction conditions, realizes efficient converting；(4) to rubbish source
Wide adaptability: due to forcing roll-in to generate biggish pressure between roller, and constantly torn in pyrolytic process by groove
Rubbish is pulverized, so that the size of rubbish fragment without too small, reduces pulverizer power consumption, while can also better adapt to not of the same race
The rubbish of class；(5) stable transmission: using freely-supported axis, and transmission stability is high；Simultaneously because rolling to roller, rather than rely on object
Material is exchanged with the heat of wall surface high speed contact, and for revolving speed without excessive, relative stability is also higher；(6) temperature control convenience, heat exchange amount
Greatly, good effect of heat exchange: using electric heating rather than the heat exchanger of high-temperature medium, can preferably regulate and control reactor accurately and fast
Interior temperature；Simultaneously using electric current heating heat-conducting medium and then indirect heating roll body, also there is uniformity of temperature profile, amount of stored heat
Greatly, the features such as reply waste component fluctuation buffering capacity is big, good effect of heat exchange；(6) prevent rubbish winding from building bridge: by two propellers
It is in tilted layout, makes pressure roller is downward to lower compression roller generation to roll, and stir rubbish material by helical tooth wall in rotary course,
Enhance its disturbance, hinders rubbish fragment to skid between roll body bridge formation, while enhancing the adhesive force of roller by hackly surface；
(7) it without using carrier gas, or only needs using a small amount of carrier gas: due to the carrier gas in the present apparatus merely to accelerating the quick of pyrolysis gas
Discharge reduces gas residence time, second pyrolysis is avoided as far as possible, not as fluidizing agent or heat carrier.Therefore needed for
Usage amount is few, or without using avoiding energy loss caused by carrier gas heating and condensation process；(8) compact-sized, easily expand
Treating capacity: being exchanged heat using roll surface, without using heat carrier, avoids being equipped with relevant auxiliary device, space utilization rate is high.Meanwhile
It is easy the length by increasing reactor, increase roller is long, and the treatment effeciency of device is improved by multiple reactors in parallel；
(9) self-heated pyrolysis: the combustible gas that refuse pyrolysis generates is used to burn with residue, is provided heat for pyrolysis, is realized self-heating
Pyrolytic process；(10) cleaning discharge: pyrolytic process is that oxygen-limited condition generates H first2, the reproducibility components such as CO, and temperature it is lower,
Residence time long enough in furnace can effectively inhibit the generation of the harmful substances such as dioxin from source.Secondly it is taken off using mature
Nitre and dedusting technology carry out the generation that chilling further contains dioxin to flue gas to remove the NOx and dust in flue gas,
And by washing come dechlorination desulfurization, pollutant that may be present is further eliminated with reasonable purification system, reaches cleaning discharge.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of spiral roller type refuse pyrolysis system of the invention；
Fig. 2 is the structural representation of spiral roller type pyrolysis reactor in a kind of spiral roller type refuse pyrolysis system of the invention
Figure；
Fig. 3 is the mesh schematic representation of the first spiral pressure roller and the second spiral pressure roller in Fig. 2；
Fig. 4 is the structural schematic diagram of the first spiral pressure roller and the second spiral pressure roller in Fig. 2.
In figure: 1. hoppers, 2. dry feed systems, 3. spiral roller type pyrolysis reactors, 301. exhaust outlets, 302. chargings
Mouthful, 303. closed containers, 304. first spiral pressure rollers, 305. high-temperature flue gas heat exchange coils, 306. second spiral pressure rollers, 307. rows
Cinder notch, 308. driving devices, 309. gears, 4. gas-solid separators, 5. pyrolysis gas condenser systems, 6. flammable gas storage tanks, 7. liquid
Collecting box, 8. solid collecting boxs, 9. combustion systems, 10. flue gas pressure charging systems, 11. flue gas purification systems.
Specific embodiment
Explanation and specific embodiment are described in further detail technical solution of the present invention with reference to the accompanying drawing.
As depicted in figs. 1 and 2, a kind of spiral roller type refuse pyrolysis system of the invention, comprising:
Spiral roller type pyrolysis reactor 3, spiral roller type pyrolysis reactor 3 includes closed container 303, on closed container 303
It is provided with feed inlet 302, slag-drip opening 307 and exhaust outlet 301, feed inlet 302 is connected with dry feed system 2, closed container 303
Interior rotation is provided with intermeshing first spiral pressure roller 304 and the second spiral pressure roller 306, and rubbish from feed inlet 302 into
Enter the engagement place for falling in the first spiral pressure roller 304 and the second spiral pressure roller 306；First spiral pressure roller 304 and the second spiral pressure roller
306 roll shaft is hollow structure, and roll shaft is internally provided with high-temperature flue gas heat exchange coil 305, and the first spiral pressure roller 304 is connected with
Driving device 308；
The air inlet of gas-solid separator 4, gas-solid separator 4 is connect with exhaust outlet 301, the solid of 4 bottom of gas-solid separator
Outlet and slag-drip opening 307 are connect with solid collecting box 8；
The air inlet of pyrolysis gas condenser system 5, pyrolysis gas condenser system 5 is connect with the gas outlet of gas-solid separator 4, pyrolysis
The inlet communication with combustible gas air accumulator 6 and combustion system 9, the outlet of combustion system 9 are logical respectively for the gas outlet of gas condenser system 5
Flue gas pressure charging system 10 is crossed to connect with one end of high-temperature flue gas heat exchange coil 305, the other end of high-temperature flue gas heat exchange coil 305 according to
It is secondary to be connected to dry feed system 2 and flue gas purification system 11, the leakage fluid dram and liquid collecting box of 5 bottom of pyrolysis gas condenser system
7 connections.
Its principle are as follows: dry feed system 2 is used to control garbage drying and controls the input speed of rubbish, prevents from inputting
It is too fast to cause to be decomposed in time in spiral roller type pyrolysis reactor 3；Spiral roller type pyrolysis reactor 3 passes through the first spiral shell
Spinning roller 304 and the roller tooth of multiple engagements on the second spiral pressure roller 306 thermally decompose rubbish, obtain gas and solid
Object；The solid of gas (pyrolysis gas) and powder type that gas-solid separator 4 is used to generate the pyrolysis of spiral roller type pyrolysis reactor 3
It is separated；The gas (pyrolysis gas) that pyrolysis gas condenser system 5 is used to obtain gas-solid separator 4 carries out gas-liquid separation, obtains
Gas (combustible gas) and liquid；For collecting gas (combustible gas), liquid collecting box 7 is used to collect liquid combustible gas air accumulator 6,
Solid collecting box 8 is used to collect the solid of solids and powder type；Combustion chamber 9 is passed through combustible gas and air, lights rear shape
At high-temperature flue gas, high-temperature flue gas is first delivered to high-temperature flue gas heat exchange coil 305 under the action of flue gas pressure charging system 10, to first
Spiral pressure roller 304 and the second spiral pressure roller 306 are heated, then are flowed into dry feed system 2 and be dried, finally in cigarette
Denitration, dedusting, dechlorination, desulfurization are carried out in gas purification system 11 and inhibit dioxin generation processing.
It should be noted that: in a kind of spiral roller type refuse pyrolysis system of the invention, spiral roller type pyrolytic reaction
The quantity of device 3 can be one, or multiple, solid collecting box 8 can also be one or more.
It, as a preferred mode, can be in dry feed system in a kind of spiral roller type refuse pyrolysis system of the invention
It is provided with a hopper 1 on system 2, convenient for rubbish is added.
It, as a preferred mode, can be by solid collecting box 8 in a kind of spiral roller type refuse pyrolysis system of the invention
It is connect with combustion system 9, the solids of thermal decomposition is delivered in combustion system 9 and is able to secondary use generation high-temperature flue gas.
In a kind of spiral roller type refuse pyrolysis system of the invention, as a preferred mode, the first spiral pressure roller 304
The part contacted with the second spiral pressure roller 306 with closed container 303 passes through high temperature resistant packing seal.Two layers of sealing can be specifically set,
Then first layer is sealed in the sealing of its disposed outside labyrinth shape as the second layer by high temperature resistant packing seal, while past fan
It is passed through a small amount of nitrogen in the cavity of palace shape sealing as protection gas, forms micro-positive pressure.
As shown in Figure 1, as a preferred mode, being done in a kind of spiral roller type refuse pyrolysis system of the invention
Dry feed system 2 is screw-feeder or belt conveyor with heating tube.
As shown in Figure 1, in a kind of spiral roller type refuse pyrolysis system of the invention, as a preferred mode, heat
Condenser system of venting one's spleen 5 is spray condenser and/or falling film condenser.
As shown in Figure 1, in a kind of spiral roller type refuse pyrolysis system of the invention, as a preferred mode, cigarette
Gas pressure charging system 10 is high temperature pressurised blower or high-temperature gas compressor.
In conjunction with Fig. 3, in a kind of spiral roller type refuse pyrolysis system of the invention, as a preferred mode, first
The roll shaft of spiral pressure roller 304 and the second spiral pressure roller 306 is rotatably arranged in closed container 303 by bearing.
As described in Figure 4, it in a kind of spiral roller type refuse pyrolysis system of the invention, as a preferred mode, drives
Dynamic device 308 is motor, and the roll shaft of the first spiral pressure roller 304 is connected by the shaft of speed reducer and motor.
As described in Figure 4, in a kind of spiral roller type refuse pyrolysis system of the invention, as a preferred mode, the
The gear 309 of a pair of meshing is set on the roll shaft of one spiral pressure roller 304 and the second spiral pressure roller 306, it can to gear 309 by this
The gear motion between the first spiral pressure roller 304 and the second spiral pressure roller 306 is better achieved.
As shown in Figure 1, the bottom of closed container 303 is gentle in a kind of spiral roller type refuse pyrolysis system of the invention
The bottom of solid separator 4 is that the solid outlet of 4 bottom of pyramidal structure slag-drip opening 507 and gas-solid separator is located at equal pyramidal structure
Lowermost end, it can be ensured that the solid of solids or powdery is fallen completely within as far as possible in solid collecting box 8.
As shown in Figure 1, in a kind of spiral roller type refuse pyrolysis system of the invention, the first spiral pressure roller 304 and second
Spiral pressure roller 306 is angularly disposed side by side, gap 1mm-10mm, and inclination angle is 10 ° -30 °.
As shown in Figure 1, in a kind of spiral roller type refuse pyrolysis system of the invention, the first spiral pressure roller 304 and second
Tooth height, transverse tooth thickness and the screw pitch of 306 perficial helical tooth of spiral pressure roller are roller diameter 1/20-1/5.
As shown in Figure 1, a kind of spiral roller type refuse pyrolysis method of the invention, is specifically implemented according to the following steps:
Step 1. pre-processes rubbish, and pretreatment includes removal metal garbage, shredding refuse and increases into rubbish
Doping is dried pretreated rubbish using dry feed system 2, and defeated to the rubbish after drying process
It send to spiral roller type pyrolysis reactor 3；
The high-temperature flue gas that step 2. combustion system 9 is discharged is passed through high-temperature flue gas heat exchange coil 305, by the first spiral pressure roller
304 and second spiral pressure roller 306 be heated to 400 DEG C -650 DEG C, rubbish is in the first spiral pressure roller 304 and the second spiral pressure roller 306
Roll effect under thermally decomposed, thermally decompose generation solids be detained 5s-30s after be discharged into solid collecting box 8, thermally decompose
The gas of generation is discharged into gas-solid separator 4 after being detained 0.2s-2s；Turn of first spiral pressure roller 304 and the second spiral pressure roller 306
Speed is 0.1r/min-1r/min；
After step 3. gas separates in gas-solid separator 4, obtained gas is discharged into pyrolysis gas condenser system 5, is obtained
Powdery solid be discharged into solid collecting box 8；
After step 4. gas is discharged into pyrolysis gas condenser system 5, obtained gas is discharged into combustible gas air accumulator 6 and combustion system
In 9, obtained liquid is discharged into liquid collecting box 7；
The high-temperature flue gas of step 5. high-temperature flue gas heat exchange coil discharge is delivered to flue gas purification system, flue gas purification system 11
Denitration, dedusting, dechlorination, desulfurization are carried out to high-temperature flue gas by the way of absorption, chilling, washing and inhibited at dioxin generation
Reason.
It should be noted that in the pretreatment of step 1: can be by electromagnetism screening machine for removing metal garbage, by broken
Broken screening machine is crushed the rubbish after selecting for removing bulk chad, and chemicals dosing plant supplies additive to rubbish.
Embodiment 1
A kind of spiral roller type refuse pyrolysis method of the invention, is specifically implemented according to the following steps:
Step 1. pre-processes rubbish, and pretreatment includes removal metal garbage, shredding refuse and increases into rubbish
Doping is dried pretreated rubbish using dry feed system 2, and defeated to the rubbish after drying process
It send to spiral roller type pyrolysis reactor 3；
The high-temperature flue gas that step 2. combustion system 9 is discharged, is passed through high-temperature flue gas heat exchange coil by flue gas pressure charging system 10
305, the first spiral pressure roller 304 and the second spiral pressure roller 306 are heated to 400 DEG C, rubbish is in the first spiral pressure roller 304 and second
It is thermally decomposed under the effect of rolling of spiral pressure roller 306, is discharged into solid collecting box 8 after thermally decomposing the solids delay 5s of generation
In, it is discharged into gas-solid separator 4 after thermally decomposing the gas delay 0.2s of generation；First spiral pressure roller 304 and the second spiral pressure roller
306 revolving speed is 0.1r/min；
After step 3. gas separates in gas-solid separator 4, obtained gas is discharged into pyrolysis gas condenser system 5, is obtained
Powdery solid be discharged into solid collecting box 8；
After step 4. gas is discharged into pyrolysis gas condenser system 5, obtained gas is discharged into combustible gas air accumulator 6 and combustion system
In 9, obtained liquid is discharged into liquid collecting box 7；
The high-temperature flue gas that step 5. high-temperature flue gas heat exchange coil 305 is discharged is delivered to flue gas purification system 11, gas cleaning
System 11 carries out denitration, dedusting, dechlorination, desulfurization to high-temperature flue gas by the way of absorption, chilling, washing and inhibits dioxin raw
At.
Embodiment 2
A kind of spiral roller type refuse pyrolysis method of the invention, is specifically implemented according to the following steps:
Step 1. pre-processes rubbish, and pretreatment includes removal metal garbage, shredding refuse and increases into rubbish
Doping is dried pretreated rubbish using dry feed system 2, and defeated to the rubbish after drying process
It send to spiral roller type pyrolysis reactor 3；
The high-temperature flue gas that step 2. combustion system 9 is discharged, is passed through high-temperature flue gas heat exchange coil by flue gas pressure charging system 10
305, the first spiral pressure roller 304 and the second spiral pressure roller 306 are heated to 525 DEG C, rubbish is in the first spiral pressure roller 304 and second
It is thermally decomposed under the effect of rolling of spiral pressure roller 306, is discharged into solid collecting box 8 after thermally decomposing the solids delay 17s of generation
In, it is discharged into gas-solid separator 4 after thermally decomposing the gas delay 1.1s of generation；First spiral pressure roller 304 and the second spiral pressure roller
306 revolving speed is 0.5r/min；
After step 3. gas separates in gas-solid separator 4, obtained gas is discharged into pyrolysis gas condenser system 5, is obtained
Powdery solid be discharged into solid collecting box 8；
After step 4. gas is discharged into pyrolysis gas condenser system 5, obtained gas is discharged into combustible gas air accumulator 6 and combustion system
In 9, obtained liquid is discharged into liquid collecting box 7；
The high-temperature flue gas that step 5. high-temperature flue gas heat exchange coil 305 is discharged is delivered to flue gas purification system 11, gas cleaning
System 11 carries out denitration, dedusting, dechlorination, desulfurization to high-temperature flue gas by the way of absorption, chilling, washing and inhibits dioxin raw
At.
Embodiment 3
A kind of spiral roller type refuse pyrolysis method of the invention, is specifically implemented according to the following steps:
Step 1. pre-processes rubbish, and pretreatment includes removal metal garbage, shredding refuse and increases into rubbish
Doping is dried pretreated rubbish using dry feed system 2, and defeated to the rubbish after drying process
It send to spiral roller type pyrolysis reactor 3；
The high-temperature flue gas that step 2. combustion system 9 is discharged, is passed through high-temperature flue gas heat exchange coil by flue gas pressure charging system 10
305, the first spiral pressure roller 304 and the second spiral pressure roller 306 are heated to 650 DEG C, rubbish is in the first spiral pressure roller 304 and second
It is thermally decomposed under the effect of rolling of spiral pressure roller 306, is discharged into solid collecting box 8 after thermally decomposing the solids delay 30s of generation
In, it is discharged into gas-solid separator 4 after thermally decomposing the gas delay 2s of generation；First spiral pressure roller 304 and the second spiral pressure roller 306
Revolving speed be 1r/min；
After step 3. gas separates in gas-solid separator 4, obtained gas is discharged into pyrolysis gas condenser system 5, is obtained
Powdery solid be discharged into solid collecting box 8；
After step 4. gas is discharged into pyrolysis gas condenser system 5, obtained gas is discharged into combustible gas air accumulator 6 and combustion system
In 9, obtained liquid is discharged into liquid collecting box 7；
The high-temperature flue gas that step 5. high-temperature flue gas heat exchange coil 305 is discharged is delivered to flue gas purification system 11, gas cleaning
System 11 carries out denitration, dedusting, dechlorination, desulfurization to high-temperature flue gas by the way of absorption, chilling, washing and inhibits dioxin raw
At.
Claims (10)
1. a kind of spiral roller type refuse pyrolysis system characterized by comprising
Spiral roller type pyrolysis reactor (3), the spiral roller type pyrolysis reactor (3) includes closed container (303), described closed
Feed inlet (302), slag-drip opening (307) and exhaust outlet (301) are provided on container (303), the feed inlet (302) is connected with dry
Dry feed system (2), the interior rotation of closed container (303) are provided with intermeshing first spiral pressure roller (304) and the second spiral
Pressure roller (306), and rubbish falls in the first spiral pressure roller (304) and the second spiral pressure roller (306) from feed inlet (302) entrance
Engagement place；The roll shaft of the first spiral pressure roller (304) and the second spiral pressure roller (306) is hollow structure, in roll shaft
Portion is provided with high-temperature flue gas heat exchange coil (305), and the first spiral pressure roller (304) is connected with driving device (308)；
The air inlet of gas-solid separator (4), the gas-solid separator (4) is connect with the exhaust outlet (301), gas-solid separator
(4) solid outlet of bottom and the slag-drip opening (307) are connect with solid collecting box (8)；
Pyrolysis gas condenser system (5), the air inlet of the pyrolysis gas condenser system (5) and the gas outlet of gas-solid separator (4) connect
It connects, the gas outlet of pyrolysis gas condenser system (5) inlet communication with combustible gas air accumulator (6) and combustion system (9) respectively, burning
The outlet of system (9) is connect by flue gas pressure charging system (10) with one end of high-temperature flue gas heat exchange coil (305), and high-temperature flue gas changes
The other end of hot coil (305) is successively connected to dry feed system (2) and flue gas purification system (11), pyrolysis gas condenser system
(5) leakage fluid dram of bottom is connect with liquid collecting box (7).
2. spiral roller type refuse pyrolysis system according to claim 1, which is characterized in that the dry feed system (2)
For screw-feeder or belt conveyor with heating tube.
3. spiral roller type refuse pyrolysis system according to claim 1, which is characterized in that the flue gas pressure charging system (10)
For high temperature pressurised blower or high-temperature gas compressor.
4. spiral roller type refuse pyrolysis system according to claim 1, which is characterized in that the pyrolysis gas condenser system
It (5) is spray condenser and/or falling film condenser.
5. spiral roller type refuse pyrolysis system according to claim 1, which is characterized in that the first spiral pressure roller
(304) and the second spiral pressure roller (306) is angularly disposed side by side, gap 1mm-10mm, and inclination angle is 10 ° -30 °.
6. spiral roller type refuse pyrolysis system according to claim 1, which is characterized in that the first spiral pressure roller
(304) and the tooth of the second spiral pressure roller (306) perficial helical tooth height, transverse tooth thickness and screw pitch are roller diameter 1/20-1/5.
7. a kind of spiral roller type refuse pyrolysis method is based on spiral roller type refuse pyrolysis of any of claims 1-7
System is realized, which is characterized in that is specifically implemented according to the following steps:
Step 1. is dried rubbish using dry feed system (2), and is delivered to spiral shell to the rubbish after drying process
It revolves roll-type pyrolysis reactor (3)；
The high-temperature flue gas of step 2. combustion system (9) discharge is passed through high-temperature flue gas heat exchange coil (305), by the first spiral pressure roller
(304) and the second spiral pressure roller (306) is heated to 400 DEG C -650 DEG C, and rubbish is in the first spiral pressure roller (304) and described
It is thermally decomposed under the effect of rolling of two spiral pressure rollers (306), is discharged into solid after thermally decomposing the solids delay 5s-30s of generation
In collecting box (8), it is discharged into gas-solid separator (4) after thermally decomposing the gas delay 0.2s-2s of generation；
In gas-solid separator (4) after separation, obtained gas is discharged into pyrolysis gas condenser system (5) step 3. gas, is obtained
Powdery solid be discharged into solid collecting box (8)；
After step 4. gas is discharged into pyrolysis gas condenser system (5), obtained gas is discharged into combustible gas air accumulator (6) and combustion system
(9) in, obtained liquid is discharged into liquid collecting box (7)；
The high-temperature flue gas of step 5. high-temperature flue gas heat exchange coil discharge is discharged after flue gas purification system is handled.
8. spiral roller type refuse pyrolysis method according to claim 7, which is characterized in that in step 1, rubbish enters dry
It is pre-processed before dry feed system (2), the pretreatment includes removal metal garbage, shredding refuse and is increased into rubbish
Doping.
9. spiral roller type refuse pyrolysis method according to claim 8, which is characterized in that in step 2, the first spiral pressure
Roller (304) and the revolving speed of the second spiral pressure roller (306) are 0.1r/min-1r/min.
10. according to right to go 9 described in spiral roller type refuse pyrolysis method, which is characterized in that in the step 5, flue gas
Purification system (11) carries out denitration, dedusting, dechlorination, desulfurization and inhibition two to high-temperature flue gas by the way of absorption, chilling, washing
Dislike English generation processing.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788971A (en) * | 2014-01-16 | 2014-05-14 | 华北电力大学 | Rolling type biomass pyrolysis poly-generation device and rolling type biomass pyrolysis poly-generation method |
| KR20140059944A (en) * | 2012-11-09 | 2014-05-19 | 최준호 | Pyrolyzer for emulsification apparatus |
| CN110003926A (en) * | 2019-04-04 | 2019-07-12 | 华北电力大学 | A kind of apparatus and method of differential grinding roller formula biomass quick catalysis pyrolysis |
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2019
- 2019-07-29 CN CN201910689052.7A patent/CN110529854A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140059944A (en) * | 2012-11-09 | 2014-05-19 | 최준호 | Pyrolyzer for emulsification apparatus |
| CN103788971A (en) * | 2014-01-16 | 2014-05-14 | 华北电力大学 | Rolling type biomass pyrolysis poly-generation device and rolling type biomass pyrolysis poly-generation method |
| CN110003926A (en) * | 2019-04-04 | 2019-07-12 | 华北电力大学 | A kind of apparatus and method of differential grinding roller formula biomass quick catalysis pyrolysis |
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Application publication date: 20191203 |