CN105199757B - Pyrolysis system and method based on high-moisture organic waste - Google Patents
Pyrolysis system and method based on high-moisture organic waste Download PDFInfo
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 177
- 239000010815 organic waste Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000001035 drying Methods 0.000 claims abstract description 140
- 239000007789 gas Substances 0.000 claims abstract description 93
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000003546 flue gas Substances 0.000 claims abstract description 74
- 239000003610 charcoal Substances 0.000 claims abstract description 73
- 239000000779 smoke Substances 0.000 claims abstract description 43
- 238000001816 cooling Methods 0.000 claims abstract description 41
- 230000018044 dehydration Effects 0.000 claims abstract description 21
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims description 63
- 239000005416 organic matter Substances 0.000 claims description 54
- 238000010791 quenching Methods 0.000 claims description 49
- 230000000171 quenching effect Effects 0.000 claims description 49
- 239000000571 coke Substances 0.000 claims description 21
- 238000011282 treatment Methods 0.000 claims description 16
- 239000002351 wastewater Substances 0.000 claims description 16
- 235000019504 cigarettes Nutrition 0.000 claims description 7
- 230000008569 process Effects 0.000 abstract description 10
- 239000002737 fuel gas Substances 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000000567 combustion gas Substances 0.000 description 11
- 239000003814 drug Substances 0.000 description 11
- 239000002893 slag Substances 0.000 description 11
- 239000012075 bio-oil Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000000446 fuel Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The method being pyrolyzed the invention discloses the pyrolysis system based on high-moisture organic waste and to high-moisture organic waste.Wherein, the pyrolysis system based on high-moisture organic waste includes：Dehydration device, the first drying device, the second drying device, pyrolysis oven, First Heat Exchanger, the second heat exchanger and pyrolysis oil air pipe.Using the pyrolysis system of the present invention, the organic waste of high-moisture can be handled continuously, on a large scale.Second drying device is dried using the pyrolysis oil gas after cooling, organic waste can filter off part heavy tar and ash content simultaneously, organic waste containing heavy tar and ash content enters pyrolysis system and occurs pyrolytic reaction, clean unit handling process can not only be simplified, fuel gases calorific value can also be improved, wherein, charcoal and flue gas heat exchange, the pre- heat smoke of charcoal and first after being cooled, first pre- heat smoke and pyrolysis oil gas heat exchange obtain the pyrolysis oil gas after the second pre- heat smoke and cooling, external heat source need not be added, Exposure degree degree is higher, the utilization ratio of the energy is high.
Description
Technical field
The present invention relates to chemical field, in particular it relates to pyrolysis system and method based on high-moisture organic waste,
It is pyrolyzed more particularly, to the pyrolysis system based on high-moisture organic waste and to high-moisture organic waste
Method.
Background technology
The quantity of the organic waste of China's high-moisture is very huge, and more than 2.5 hundred million tons of high-moisture is there are about every year
Organic waste generation, such as municipal sludge, bagasse, Chinese medicine slag, vinasse, garden stuff processing residue.Have due to more than
The high-moisture of machine discarded object, processing power consumption is higher, and it is rich in the characteristic of lignin so that it is difficult to directly degraded.
At present, existing processing method is mainly anaerobic digestion, burning, landfill etc..The energy conversion rate of anaerobic digestion compared with
It is low, burn, landfill causes energy waste and environmental pollution.Thermochemical study method is by the organic waste goods and materials of high-moisture
One of effective ways of source comprehensive utilization.Organic waste water content is high, existing external heat drying and dehydrating, then will be dried
The direct thermochemical study method of organic waste, the pretreating process power consumption of early stage is higher, limits the utilization of organic waste.
Thus, the pyrolysis system and method for high-moisture organic waste have much room for improvement.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, one object of the present invention
It is to propose a kind of energy utilization rate height, energy consumption low pyrolysis system and method based on high-moisture organic waste.
According to an aspect of the present invention, the invention provides a kind of pyrolysis system based on high-moisture organic waste
System.Embodiments in accordance with the present invention, being somebody's turn to do the pyrolysis system based on high-moisture organic waste includes：Dehydration device, for pair
The high-moisture organic waste carries out dewater treatment, so as to the organic matter and waste water after being dehydrated；First drying device,
First drying device is connected with the dehydration device, for carrying out the first drying process to the organic matter after the dehydration,
To obtain the organic matter after the first drying process；Second drying device, second drying device is dried with described first and filled
Put connected, for carrying out the second drying process to the organic matter after first drying process, to obtain the second drying process
Organic matter afterwards；Pyrolysis oven, the pyrolysis oven is connected with second drying device, after to second drying process
Organic matter carries out pyrolysis processing, to obtain charcoal, pyrolysis oil gas and flue gas；First Heat Exchanger, the First Heat Exchanger
It is connected with the pyrolysis oven, for carrying out the first heat exchange processing to the charcoal and the flue gas, after being cooled
Charcoal and the first pre- heat smoke；Second heat exchanger, second heat exchanger and the pyrolysis oven and the First Heat Exchanger phase
Even, for carrying out the second heat exchange processing to the pyrolysis oil gas and the first pre- heat smoke, so as to the pyrolysis after being cooled
Oil gas and the second pre- heat smoke；Pyrolysis oil air pipe, the pyrolysis oil air pipe and second heat exchanger and described second dry
Dry device is connected, for the pyrolysis oil gas after the cooling to be delivered in second drying device, after the cooling
Pyrolysis oil gas provide heat for second drying process, to obtain the organic matter after second drying process；And
Flue gas pipeline, the flue gas pipeline is connected with second heat exchanger and first drying device, for pre- by described second
Heat smoke is delivered in first drying device, and heat is provided for first drying process using the described second pre- heat smoke
Amount, to obtain the organic matter and steam-laden flue gas after first drying process.
Embodiments in accordance with the present invention, using the present invention pyrolysis system, can continuously, handle high-moisture on a large scale
Organic waste.Second drying device is dried using the pyrolysis oil gas after cooling, while organic waste can filter off part weight
Matter tar and ash content, can not only simplify clean unit handling process, can also improve fuel gases calorific value, wherein, the second preheating cigarette
Pyrolysis oil gas after gas and cooling is internal system heat exchange gained, and without adding external heat source, Exposure degree degree is higher, the energy
Utilization ratio it is high.
In addition, the pyrolysis system according to the above embodiment of the present invention based on high-moisture organic waste, can also have
There is technical characteristic additional as follows：
Embodiments in accordance with the present invention, the pyrolysis system further comprises：Purifier, the purifier and described
Two drying devices are connected, for carrying out purified treatment to the pyrolysis oil gas after the filtering, to obtain bio oil and combustion gas, its
In, the part combustion gas provides fuel for the pyrolysis oven.
Embodiments in accordance with the present invention, the pyrolysis system further comprises：First coke quencher, first coke quencher and institute
State the first drying device with the First Heat Exchanger to be connected, using the steam-laden flue gas to the charcoal after the cooling
The first quenching processing is carried out, to obtain the charcoal after the first quenching processing；And second coke quencher, second coke quencher
It is connected with first coke quencher and the dehydration device, the charcoal after being handled using the waste water first quenching is entered
The quenching of row second is handled, so as to the charcoal cooled down.
Embodiments in accordance with the present invention, the pyrolysis oven is heat accumulating type rotating bed pyrolysis oven.Heat accumulating type rotating bed pyrolysis oven
It is annular furnace, is heated by heat storage type gas radiation pipe burner, i.e., provides heat by way of burn combustible gas is with heat radiation
Solve institute's calorific requirement.Material to be pyrolyzed is arranged on the ring-shaped furnace bottom of annular furnace, and the furnace bottom can horizontally rotate, regenerative gas
Radiant tube burner is arranged on the annular furnace wall of annular furnace, the atmosphere isolation in the flue gas and annular furnace in radiant tube.According to
Embodiments of the invention, first drying device and second drying device are rotary kiln.
According to another aspect of the present invention, the invention provides a kind of side being pyrolyzed to high-moisture organic waste
Method.Embodiments in accordance with the present invention, this method includes：The high-moisture organic waste is dehydrated using dehydration device
Processing, so as to the organic matter and waste water after being dehydrated；The organic matter after the dehydration is carried out the using the first drying device
One drying process, to obtain the organic matter after the first drying process；Using the second drying device by first drying process
Organic matter afterwards carries out the second drying process, to obtain the organic matter after the second drying process；Using pyrolysis oven by described
Organic matter after two drying process carries out pyrolysis processing, to obtain charcoal, pyrolysis oil gas and flue gas；Utilize the first heat exchange
Described flue gas and described charcoal are carried out the first heat exchange processing by device, obtain the biology after the first pre- heat smoke and cooling
Charcoal；The pyrolysis oil gas and the first pre- heat smoke are subjected to the second heat exchange processing using the second heat exchanger, to be dropped
Pyrolysis oil gas and the second pre- heat smoke after temperature, wherein, the pyrolysis oil gas after the cooling provides for second drying process
Heat, to obtain the pyrolysis oil gas of the organic matter after second drying process and cooling；And flue gas pipeline is utilized by institute
State the second pre- heat smoke to be delivered in first drying device, be first drying process using the described second pre- heat smoke
Heat is provided, to obtain the organic matter and steam-laden flue gas after first drying process.
Embodiments in accordance with the present invention, using the present invention method for pyrolysis, can continuously, handle high-moisture on a large scale
Organic waste.Second drying process is dried using the pyrolysis oil gas after cooling, while organic waste can filter off part weight
Matter tar and ash content, can not only simplify clean unit handling process, can also improve fuel gases calorific value, wherein, the second preheating cigarette
Pyrolysis oil gas after gas and cooling is internal system heat exchange gained, and without adding external heat source, Exposure degree degree is higher, the energy
Utilization ratio it is high.
Embodiments in accordance with the present invention, this method further comprises：The pyrolysis oil gas of the cooling is subjected to purified treatment,
To obtain bio oil and combustion gas, wherein, the part combustion gas provides fuel for the pyrolysis processing.
Embodiments in accordance with the present invention, this method further comprises：Using the steam-laden flue gas to the cooling
Charcoal afterwards carries out the first quenching processing, to obtain the charcoal after the first quenching processing；And utilize the waste water pair
Charcoal after the first quenching processing carries out the second quenching processing, so as to the charcoal cooled down.
Embodiments in accordance with the present invention, heat is provided using the described second pre- heat smoke for first drying process, with
Just organic matter and steam-laden flue gas after first drying process are obtained.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 shows the structure of the pyrolysis system according to an embodiment of the invention based on high-moisture organic waste
Schematic diagram；
Fig. 2 shows the structure of the pyrolysis system according to an embodiment of the invention based on high-moisture organic waste
Schematic diagram；
Fig. 3 shows the stream of the method according to an embodiment of the invention being pyrolyzed to high-moisture organic waste
Journey schematic diagram；
Fig. 4 shows the stream of the method according to an embodiment of the invention being pyrolyzed to high-moisture organic waste
Journey schematic diagram；
Fig. 5 shows the stream of the method according to an embodiment of the invention being pyrolyzed to high-moisture organic waste
Journey schematic diagram.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, term " longitudinal direction ", " transverse direction ", " on ", " under ", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " top ", " bottom " are, based on orientation shown in the drawings or position relationship, to be only
For the ease of the description present invention rather than require that the present invention must be therefore it is not intended that right with specific azimuth configuration and operation
The limitation of the present invention.
It should be noted that term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be with
Express or implicitly include one or more this feature.Further, in the description of the invention, unless otherwise saying
Bright, " multiple " are meant that two or more.
According to an aspect of the present invention, the invention provides a kind of pyrolysis system based on high-moisture organic waste
System.With reference to Fig. 1, embodiments in accordance with the present invention are solved to the pyrolysis system 1000 based on high-moisture organic waste
Explanation is released, the system 1000 includes：Dehydration device 100, the first drying device 200, the second drying device 300, pyrolysis oven 400,
First Heat Exchanger 1200, the second heat exchanger 500, flue gas pipeline 600 and pyrolysis oil air pipe 700.Embodiments in accordance with the present invention,
Dehydration device 100 is used to carry out dewater treatment, organic matter and waste water after being dehydrated to high-moisture organic waste.First
Drying device 200 is connected with dehydration device 100, for carrying out the first drying process to the organic matter after dehydration, obtains first dry
Organic matter after dry processing；Second drying device 300 is connected with the first drying device 200, after to the first drying process
Organic matter carries out the second drying process, to obtain the organic matter after the second drying process；The drying device of pyrolysis oven 400 and second
300 are connected, and for carrying out pyrolysis processing to the organic matter after the second drying process, obtain charcoal, pyrolysis oil gas and flue gas；
First Heat Exchanger 1200 is connected with pyrolysis oven 400, for carrying out heat exchange processing, the biology after being cooled to charcoal and flue gas
Charcoal and the first pre- heat smoke；Second heat exchanger 500 is connected with pyrolysis oven 400 and First Heat Exchanger 1200, for pyrolysis oil gas
Heat exchange processing, pyrolysis oil gas and the second pre- heat smoke after being cooled are carried out with the first pre- heat smoke；Pyrolysis oil air pipe 800
It is connected with the second heat exchanger 500 and the second drying device 300, for the pyrolysis oil gas after cooling to be delivered into the second drying device
In 300, heat is provided for the second drying process using the pyrolysis oil gas after cooling, obtain the organic matter after the second drying process and
The pyrolysis oil gas of cooling；Flue gas pipeline 600 is connected with the second heat exchanger 500 and the first drying device 200, for second to be preheated
Flue gas is delivered in the first drying device 200, and heat is provided for the first drying process using the second pre- heat smoke, obtains described
Organic matter and steam-laden flue gas after one drying process.
Embodiments in accordance with the present invention, using the present invention pyrolysis system, can continuously, handle high-moisture on a large scale
Organic waste.By obtaining charcoal and flue gas progress heat exchange processing to pyrolysis, the charcoal and first after being cooled are pre-
Heat smoke, the first pre- heat smoke is with pyrolysis oil gas progress heat exchange processing, pyrolysis oil gas and the second pre- heat smoke after being cooled,
Wherein, the second drying device is dried using the pyrolysis oil gas after cooling, and pyrolysis oil gas carries out preheating and drying to organic waste, together
When organic waste can filter off part heavy tar and ash content, can not only simplify clean unit handling process, can also carry
High fuel gases calorific value.Also, flue gas exchanges heat with charcoal, can not only realize Exposure degree, can also reduce the temperature of charcoal,
Reduce the loss of quenching processing；The first pre- heat smoke and pyrolysis oil gas heat exchange by heat exchange, it is to avoid pyrolysis oil gas condensation is in two
In level heat exchanger, while the part sensible heat of pyrolysis oil gas is reclaimed, the temperature of reduction pyrolysis oil gas；First drying device is using heat exchange
The second obtained pre- heat smoke is dried, and not only realizes the reasonable utilization of the second pre- heat smoke, and the second pre- heat smoke
Moderate temperature, organic matter drying effect is preferable, and the pyrolysis oil gas after the second pre- heat smoke and cooling is that internal system exchanges heat
Gained, without adding external heat source, Exposure degree degree is higher, and the utilization ratio of the energy is high.
According to some embodiments of the present invention, the water content of high-moisture organic waste is 50~75%.Thus, this hair
Bright pyrolysis system is suitable to the organic waste of pyrolysis high-moisture.
According to some embodiments of the present invention, the first drying device and the second drying device will be dry using feeding screw
Organic matter after dry is delivered to next stage arrangement.Thus, the first drying device and the second drying device ensure strict sealing, heat
Utilization rate is high.
With reference to Fig. 2, according to some embodiments of the present invention, the pyrolysis system 1000 further comprises：Purifier 800,
The purifier 800 is connected with the second drying device 300, carries out condensation cleaning processing for the pyrolysis oil gas to cooling, obtains
Bio oil and combustion gas, wherein, Some gases provide fuel for pyrolysis oven.Thus, by carrying out purified treatment to pyrolysis oil gas, obtain
Bio oil and combustion gas to high economic value, combustion gas can also provide fuel for pyrolysis oven, realize making full use of for the energy.According to this
The embodiment of invention, bio oil is stored in bio oil container 1300, and gas storage is in gas holder 1400.
With reference to Fig. 2, embodiments in accordance with the present invention, the pyrolysis system further comprises：First coke quencher 900, this first puts out
Burnt room 900 is connected with the first drying device 200 and First Heat Exchanger 1200, using steam-laden flue gas to the biology after cooling
Charcoal carries out the first quenching processing, obtains the charcoal after the first quenching processing；With the second coke quencher 1100, second coke quencher
1100 are connected with the first coke quencher 900 and dehydration device 100, and the charcoal after being handled using the waste water the first quenching is carried out
Second quenching is handled, so as to the charcoal cooled down.Thus, using the first drying process produce it is discarded steam-laden
Flue gas carries out the first quenching processing, and the charcoal progress second after the waste water produced using dewater treatment is handled the first quenching is put out
Jiao's processing, is effectively recycled to waste products, saves the energy.Embodiments in accordance with the present invention, the charcoal after cooling
It is stored in charcoal storehouse 1500.
According to some embodiments of the present invention, pyrolysis oven 400 is heat accumulating type rotating bed pyrolysis oven.Thus, pyrolysis is produced
Pyrolysis gas provides heat for pyrolysis, and the flue gas discharged by heat accumulating type rotating bed pyrolysis oven can be carried out to charcoal and pyrolysis oil gas
Heat exchange is handled, and is easy to the next step processing of charcoal and pyrolysis oil gas, is realized the reasonable utilization of the energy, significantly saved energy
Source.According to some embodiments of the present invention, 500~700 DEG C of the pyrolysis temperature of pyrolysis oven 400,200~500mm of thickness of feed layer.By
This, pyrolysis effect is good, and pyrolysis yield is high.According to some embodiments of the present invention, the first drying device and the second drying device are equal
For rotary kiln.Thus, uniform drying, effect is good.
According to another aspect of the present invention, the invention provides a kind of side being pyrolyzed to high-moisture organic waste
Method.With reference to Fig. 3, the method that high-moisture organic waste is pyrolyzed is explained embodiments in accordance with the present invention,
This method includes：
S100 dewater treatments
According to some embodiments of the present invention, high-moisture organic waste is subjected to dewater treatment, after being dehydrated
Organic matter and waste water.Thus, the water content of water content organic waste is reduced by dewater treatment, method is simple, easy to operate.
The drying process of S200 first
According to some embodiments of the present invention, the organic matter after the dehydration is subjected to the first drying process, first is obtained
Organic matter after drying process, wherein, the described second pre- heat smoke is delivered to first drying device using flue gas pipeline
In, heat is provided for first drying process using the described second pre- heat smoke, to obtain after first drying process
Organic matter and steam-laden flue gas.Embodiments in accordance with the present invention, the first drying process uses second obtained that exchange heat pre-
Heat smoke is dried, and the second preheating flue-gas temperature is moderate, and organic matter drying effect is preferable.
The drying process of S300 second
According to some embodiments of the present invention, the organic matter after first drying process is subjected to the second drying process,
Obtain the organic matter after the second drying process.Thus, the pyrolysis oil gas that the second drying process is obtained using heat exchange is dried, pyrolysis oil
Gas carries out further preheating and drying to organic waste, while organic waste can filter off part heavy tar and ash content, no
Clean unit handling process can only be simplified, fuel gases calorific value can also be improved.
S400 pyrolysis processings
According to some embodiments of the present invention, the organic matter after second drying process is subjected to pyrolysis processing, obtained
Charcoal, pyrolysis oil gas and flue gas.Thus, dried organic matter water content is low, and pyrolysis yield is high, and the quality of product is good.
The heat exchange of S500 first is handled
According to some embodiments of the present invention, charcoal and flue gas are subjected to the first heat exchange processing, the life after being cooled
Thing charcoal and the first pre- heat smoke.Thus, the charcoal and flue gas pyrolysis processing obtained carries out the first heat exchange processing, utilizes biology
Charcoal heat flue gas, while the flue gas is heated up, charcoal carries out cooling processing, is easy to follow-up charcoal quenching to handle.
According to some embodiments of the present invention, 450~600 DEG C of charcoal temperature, 250~350 DEG C of the charcoal temperature after cooling, flue gas
120~150 DEG C of temperature, the first 150~200 DEG C of flue-gas temperature of preheating.Thus, handled by heat exchange, under charcoal temperature is notable
Drop, the temperature of flue-gas temperature is significantly raised, good effect of heat exchange, in addition, the reduction of charcoal temperature simplifies follow-up quenching unit
Loss.
The heat exchange of S600 second is handled
The pyrolysis oil gas and the first pre- heat smoke are subjected to the second heat exchange processing, so as to the pyrolysis after being cooled
Oil gas and the second pre- heat smoke.Thus, using the first pre- heat smoke with pyrolysis oil gas heat exchange, it is to avoid pyrolysis oil gas condensation in
In secondary heat exchanger, pyrolysis oil gas part sensible heat is reclaimed, while being handled by heat exchange, cooling processing is carried out to pyrolysis oil gas, kept away
Exempt from pyrolysis oil temperature spend height can not to organic waste carry out secondary drying.According to some embodiments of the present invention, pyrolysis oil
450~600 DEG C of temperature degree, 250~350 DEG C of pyrolysis oil temperature degree after cooling, the first 150~200 DEG C of flue-gas temperature of preheating, the
Two 200~250 DEG C of flue-gas temperatures of preheating.Thus, handled by heat exchange, the temperature of pyrolysis oil gas is remarkably decreased, one-level heat exchange cigarette
The temperature of temperature degree is significantly raised, good effect of heat exchange, and the pyrolysis oil gas after cooling is easy to carry out secondary drying to organic waste
Processing.
According to some embodiments of the present invention, heat is provided for first drying process using the described second pre- heat smoke
Amount, to obtain the organic matter and steam-laden flue gas after first drying process.Thus, exchange heat obtained secondary heat exchange
Flue-gas temperature is moderate, suitable for organic matter being dried processing, and realizes the effective and reasonable utilization of the energy.
With reference to Fig. 4, according to some embodiments of the present invention, this method further comprises：
S700 purified treatments
According to some embodiments of the present invention, the pyrolysis oil gas to organic waste Jing Guo filtration treatment is carried out net
Change is handled, to obtain bio oil and combustion gas, wherein, the part combustion gas provides fuel for the pyrolysis processing.Thus, pass through
Purified treatment is carried out to pyrolysis oil gas, bio oil and the combustion gas of high economic value is obtained, combustion gas can also provide fuel for pyrolysis oven,
Realize making full use of for the energy.
With reference to Fig. 4, embodiments in accordance with the present invention, this method further comprises：Using steam-laden flue gas to cooling
Charcoal afterwards carries out the first quenching processing, obtains the charcoal after the first quenching processing；At using waste water to the first quenching
Charcoal after reason carries out the second quenching processing, the charcoal cooled down.Thus, discarding that the first drying process is produced is utilized
Steam-laden flue gas carry out the first quenching processing, the waste water produced using dewater treatment the first quenching is handled after biology
Charcoal carries out the second quenching processing, and waste products is effectively recycled, and saves the energy.
The quenchings of S800 first are handled
According to some embodiments of the present invention, the first quenching is carried out to the charcoal after cooling using steam-laden flue gas
Processing, obtains the charcoal after the first quenching processing.Thus, the discarded steam-laden cigarette produced using the first drying process
Gas carries out the first quenching processing, and waste products is effectively recycled, and saves the energy.
The quenchings of S900 second are handled
Charcoal after being handled using waste water the first quenching carries out the second quenching processing, the charcoal cooled down.By
This, the charcoal after the waste water produced using dewater treatment is handled the first quenching carries out the second quenching processing, to waste products
Effectively recycled, save the energy.
Below with reference to specific embodiment, the present invention will be described, it is necessary to which explanation, these embodiments are only explanation
Property, and be not considered as limiting the invention.
Embodiment 1
In the present embodiment, using the pyrolysis system of the present invention, the schematic diagram of the pyrolysis system is as shown in Fig. 2 with Chinese medicine slag
It is pyrolyzed for raw material, wherein, the moisture content of Chinese medicine slag is 70%, and the process of pyrolysis is as shown in figure 5, specific as follows：
(1) Chinese medicine slag is delivered into spiral squeezing type dewaterer to be dehydrated, Chinese medicine slag moisture content is 50% after dehydration.
(2) Chinese medicine slag is delivered in one-level rotary kiln, it is dry to carry out preheating with the second pre- (250 DEG C) of heat smoke
It is dry.
(3) dried Chinese medicine slag is delivered in two-stage rotary kiln drier is entered with the pyrolysis oil gas (400 DEG C) after cooling
Row redrying.
(4) Chinese medicine slag after redrying enters heat accumulating type rotating bed pyrolysis plant progress pyrolytic reaction, wherein, pyrolysis temperature
Spend for 600 DEG C, thickness of feed layer is 300mm, flue gas is discharged by heat accumulating type rotating bed radiant tube, temperature is only 120 DEG C.
(5) flue gas carries out the first heat exchange for (500 DEG C) with charcoal, obtains the charcoal after the first pre- heat smoke and cooling.
(6) the pyrolysis oil gas and the first heat exchange flue gas that pyrolysis is obtained are carried out after the second heat exchange, the pyrolysis oil after being cooled
Gas and the second heat exchange flue gas, the pyrolysis oil gas after cooling is delivered in two-stage rotary kiln drier carries out secondary preheating to Chinese medicine slag
Clean unit is directly entered after drying and obtains bio oil and clean gas, clean gas is delivered to heat accumulating type rotating bed pyrolysis and set
It is standby, provide heat for pyrolytic reaction.
(7) the steam-laden flue gas and water obtained through one-level rotary kiln and spiral squeezing type dewaterer respectively at
One-level coke quencher and two grades of coke quencher carry out quenching to charcoal.
Using the present embodiment pyrolysis system can continuous, extensive pyrolysis processing water content be up to 70% Chinese medicine slag.
And preheating and drying is carried out to high water content organic waste using two-stage rotary kiln.Adopted in one-level rotary kiln
With the second heat exchange flue gas drying, dried using the pyrolysis oil gas after cooling in two-stage rotary kiln drier, while organic waste
Part heavy tar and ash content can be filtered off, simplifies clean unit handling process and improves fuel gases calorific value simultaneously；Wherein, the second heat exchange
Flue gas is the first heat exchange flue gas and pyrolysis oil gas heat exchange gained；Pyrolysis oil gas after cooling is the first heat exchange flue gas flue gas and pyrolysis
Oil gas heat exchange gained；It need not add and Exposure degree is realized on external heat source, higher degree, improve the utilization ratio of the energy.In addition,
Using two-stage coke quenching method, one-level coke quencher uses steam-laden low-temperature flue gas quenching, and two grades of quenchings use spiral squeezing type
The water quenching of dewaterer removing, reduces the loss of water.
Embodiment 2
In the present embodiment, using the pyrolysis system of the present invention, the schematic diagram of the pyrolysis system as shown in Fig. 2 using vinasse as
Raw material, wherein, the moisture content of vinasse is 75%, and the process of pyrolysis is as shown in figure 5, specific as follows：
(1) vinasse are delivered into spiral squeezing type dewaterer to be dehydrated, vinasse moisture content is 52% after dehydration.
(2) vinasse are delivered in one-level rotary kiln, with (240 DEG C) progress preheating and dryings of middle temperature flue gas.
(3) dried vinasse are delivered in two-stage rotary kiln drier secondary with middle warm solution (380 DEG C) progress of oil gas
Dry.
(4) vinasse after redrying enter heat accumulating type rotating bed pyrolysis plant progress pyrolytic reaction, wherein, pyrolysis temperature
For 550 DEG C, thickness of feed layer is 350mm.The flue gas that pyrolysis is produced is discharged after heat accumulating type rotating bed pyrolysis plant accumulation of heat, discharge
For low-temperature flue gas, temperature is only 130 DEG C.
(5) low-temperature flue gas is delivered to one after being exchanged heat successively with charcoal (450 DEG C), high temperature pyrolysis oil gas (500 DEG C) respectively
Level rotary kiln.
(6) after the high temperature pyrolysis oil gas that pyrolysis is obtained exchanges heat through the second heat exchanger, it is delivered in two-stage rotary kiln drier
Bio oil and clean gas are obtained to being directly entered clean unit after Chinese medicine slag progress secondary preheating drying, clean gas is delivered to
Heat accumulating type rotating bed pyrolysis plant, heat is provided for pyrolytic reaction.
(7) the steam-laden flue gas and water obtained through one-level rotary kiln and spiral squeezing type dewaterer respectively at
One-level coke quencher and two grades of coke quencher carry out quenching to charcoal.
Using the present embodiment pyrolysis system can continuous, extensive pyrolysis processing water content be up to 75% vinasse.And
And preheating and drying is carried out to high water content organic waste using two-stage rotary kiln.Used in one-level rotary kiln
Warm solution oil gas is dried in being used in middle temperature flue gas drying, two-stage rotary kiln drier, while organic waste can filter off portion
Divide heavy tar and ash content, simplify clean unit handling process and improve fuel gases calorific value simultaneously；Wherein, middle temperature flue gas is low-temperature flue gas
With high temperature pyrolysis oil gas and high-temperature biological charcoal heat exchange gained；Middle warm solution oil gas is low-temperature flue gas and high temperature pyrolysis oil gas heat exchange institute
；It need not add and Exposure degree is realized on external heat source, higher degree, improve the utilization ratio of the energy.In addition, being put out using two-stage
Burnt method, one-level coke quencher uses steam-laden low-temperature flue gas quenching, and two grades of quenchings are removed using spiral squeezing type dewaterer
Water quenching, reduce water loss.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (6)
1. a kind of pyrolysis system based on high-moisture organic waste, it is characterised in that including：
Dehydration device, for carrying out dewater treatment to the high-moisture organic waste, so as to the organic matter after being dehydrated
And waste water；
First drying device, first drying device is connected with the dehydration device, for the organic matter after the dehydration
The first drying process is carried out, to obtain the organic matter after the first drying process；
Second drying device, second drying device is connected with first drying device, to first drying
Organic matter after reason carries out the second drying process, to obtain the organic matter after the second drying process；
Pyrolysis oven, the pyrolysis oven is connected with second drying device, for the organic matter after second drying process
Pyrolysis processing is carried out, to obtain charcoal, pyrolysis oil gas and flue gas；
First Heat Exchanger, the First Heat Exchanger is connected with the pyrolysis oven, for the charcoal and flue gas progress
First heat exchange is handled, so as to the charcoal after being cooled and the first pre- heat smoke；
Second heat exchanger, second heat exchanger is connected with the pyrolysis oven and the First Heat Exchanger, for the pyrolysis
Oil gas and the first pre- heat smoke carry out the second heat exchange processing, so as to the pyrolysis oil gas after being cooled and the second preheating cigarette
Gas；
Pyrolysis oil air pipe, the pyrolysis oil air pipe is connected with second heat exchanger and second drying device, is used for
Pyrolysis oil gas after the cooling is delivered in second drying device, is described using the pyrolysis oil gas after the cooling
Second drying process provides heat, to obtain the organic matter after second drying process；And
Flue gas pipeline, the flue gas pipeline is connected with second heat exchanger and first drying device, for by described
Two pre- heat smokes are delivered in first drying device, are provided using the described second pre- heat smoke for first drying process
Heat, to obtain the organic matter and steam-laden flue gas after first drying process.
2. system according to claim 1, it is characterised in that further comprise：
First coke quencher, first coke quencher is connected with first drying device and the First Heat Exchanger, using described
Steam-laden flue gas carries out the first quenching processing to the charcoal after the cooling, to obtain the life after the first quenching processing
Thing charcoal；And
Second coke quencher, second coke quencher is connected with first coke quencher and the dehydration device, utilizes the waste water
Charcoal after handling first quenching carries out the second quenching processing, so as to the charcoal cooled down.
3. system according to claim 1, it is characterised in that the pyrolysis oven is heat accumulating type rotating bed pyrolysis oven.
4. system according to claim 1, it is characterised in that first drying device and second drying device are equal
For rotary kiln.
5. a kind of method being pyrolyzed using any one of claim 1-4 pyrolysis system to high-moisture organic waste, its
It is characterised by, including：
Using dehydration device by the high-moisture organic waste carry out dewater treatment, so as to the organic matter after be dehydrated with
Waste water；
The organic matter after the dehydration is subjected to the first drying process using the first drying device, to obtain the first drying process
Organic matter afterwards；
The organic matter after first drying process is subjected to the second drying process using the second drying device, to obtain second
Organic matter after drying process；
The organic matter after second drying process is subjected to pyrolysis processing using pyrolysis oven, to obtain charcoal, pyrolysis oil
Gas and flue gas；
Described flue gas and described charcoal are subjected to the first heat exchange processing using First Heat Exchanger, the first pre- heat smoke is obtained
With the charcoal after cooling；
The pyrolysis oil gas and the first pre- heat smoke are subjected to the second heat exchange processing using the second heat exchanger, to be dropped
Pyrolysis oil gas and the second pre- heat smoke after temperature, wherein, the pyrolysis oil gas after the cooling provides for second drying process
Heat, to obtain the pyrolysis oil gas of the organic matter after second drying process and cooling；And
The described second pre- heat smoke is delivered in first drying device using flue gas pipeline, the described second preheating cigarette is utilized
Gas provides heat for first drying process, to obtain the organic matter and steam-laden cigarette after first drying process
Gas.
6. method according to claim 5, it is characterised in that further comprise：
The first quenching processing is carried out to the charcoal after the cooling using the steam-laden flue gas, put out to obtain first
Charcoal after Jiao's processing；And
Charcoal after being handled using the waste water first quenching carries out the second quenching processing, so as to the life cooled down
Thing charcoal.
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| GB201610843D0 (en) * | 2016-06-21 | 2016-08-03 | Syngas Products Ltd | Shredder and dryer and separator |
| WO2019050716A1 (en) * | 2017-09-06 | 2019-03-14 | Bioforce Tech Corporation | Efficient procedure and system to process solid organic waste |
| CN108587631B (en) * | 2018-04-18 | 2020-12-22 | 浙江农林大学 | Device and method for preparing soil remediation agent by hydrothermal carbonization of sludge |
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| CN205115376U (en) * | 2015-10-27 | 2016-03-30 | 北京神雾环境能源科技集团股份有限公司 | Pyrolysis system based on high water content organic waste |
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