CN209383701U - The system for handling corn stover - Google Patents
The system for handling corn stover Download PDFInfo
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- CN209383701U CN209383701U CN201821809288.7U CN201821809288U CN209383701U CN 209383701 U CN209383701 U CN 209383701U CN 201821809288 U CN201821809288 U CN 201821809288U CN 209383701 U CN209383701 U CN 209383701U
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- corn stover
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- 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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Abstract
The utility model discloses the system of processing corn stover, system includes: crusher, and there is crusher corn stover entrance and corn stalk pellets to export；Stirring pool, stirring pool are connected with corn stover outlet after corn stalk pellets entrance, vinegar liquid entrance and acidleach and spent acid outlet, corn stalk pellets entrance with corn stalk pellets outlet；Drier, drier have corn stover entrance and dry corn stover outlet after acidleach, and corn stover entrance is connected with corn stover outlet after acidleach after acidleach；Pelletizer, pelletizer have dry corn stover entrance and stalk briquette outlet, and dry corn stover entrance is connected with dry corn stover outlet；There is stalk briquette entrance, pyrolysis oil gas vent and pyrolytic carbon outlet, stalk briquette entrance to be connected with stalk briquette outlet for pyrolysis installation, pyrolysis installation.Pyrolysis efficiency is significantly improved to corn stover processing using the system, gained bio-oil yield is significantly increased, gained biomass and pyrolysis gas quality with higher.
Description
Technical field
The utility model belongs to biomass field of new energy technologies, specifically, the utility model relates to a kind of processing jade
The system of rice stalk.
Background technique
The pollution problem for perplexing national atmospheric environment always is polluted caused by crop straw burning.In order to seek basic solution way
Diameter, institute, Research of Environmental Sciences cooperate with Chemical Industry & Metallrygy Research Office of CAS, complete and " are provided using biomass such as corn stovers
Develop pyrolysis oil and mixed organic calcium desulfurization denitrification agent in source " technical research project.However corn stover contains a large amount of ash content,
If directly carrying out pyrolysis processing, the yield of bio-oil, biogas is not only reduced, influences the quality of biomass carbon, simultaneously
Increase pyrolysis energy consumption.
Therefore, the technology of existing processing corn stover needs further to be studied.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.For this purpose, this reality
It is to propose a kind of system and method for handling corn stover with a novel purpose, using the system to corn stover processing
Pyrolysis efficiency can be significantly improved, and gained bio-oil yield is significantly increased, gained biomass and pyrolysis gas are with higher
Quality.
In the one aspect of the utility model, the utility model proposes a kind of systems for handling corn stover.According to this
The embodiment of utility model, the system comprises:
There is corn stover entrance and corn stalk pellets to export for crusher, the crusher；
Stirring pool, the stirring pool have after corn stalk pellets entrance, vinegar liquid entrance and acidleach corn stover outlet and
Spent acid outlet, the corn stalk pellets entrance are connected with corn stalk pellets outlet；
Drier, the drier has corn stover entrance and dry corn stover outlet after acidleach, after the acidleach
Corn stover entrance is connected with corn stover outlet after the acidleach；
Pelletizer, the pelletizer have dry corn stover entrance and stalk briquette outlet, the dry corn stover
Entrance is connected with the dry corn stover outlet；
Pyrolysis installation, the pyrolysis installation have stalk briquette entrance, pyrolysis oil gas vent and pyrolytic carbon outlet, the straw
Stalk briquetting entrance is connected with stalk briquette outlet.
Pass through the corn stover obtained after being crushed according to the system of the processing corn stover of the utility model embodiment
Grain supply is mixed into stirring pool with vinegar liquid, so that vinegar liquid carries out acidleach to corn stalk pellets, jade can be significantly reduced
Ash content in rice stalk, then by corn stover after acidleach, successively supply is pyrolyzed into pyrolysis installation after dry and briquetting
Processing, not only significantly reduces pyrolysis cost, but also the obtained pyrolysis oil yield of pyrolytic process and calorific value are higher, can directly return
It receives and utilizes, while obtained pyrolytic carbon ash content is substantially reduced, pyrolytic carbon and pyrolysis gas quality with higher.As a result, using this
The system of application not only solves in the prior art the directly high problem of pyrolysis corn stover energy consumption, and solves bio-oil
Low yield and the low problem of calorific value, while solving the problems, such as that pyrolytic carbon and pyrolysis gas quality are low, to truly realize
The resource utilization of corn stover.
In addition, can also be had according to the system of the processing corn stover of the utility model above-described embodiment following additional
Technical characteristic:
In some embodiments of the utility model, above system further comprises: heat exchanger, and the heat exchanger has cold
But water inlet, pyrolysis oil gas entrance, hot vapour outlet, pyrolysis gas outlet and oil water mixture outlet, the pyrolysis oil gas entrance and
The pyrolysis oil gas vent is connected, and the hot vapour outlet is connected with the drier；Oily-water seperating equipment, the water-oil separating dress
It sets with oil water mixture entrance, bio-oil outlet and vinegar liquid outlet, the oil water mixture entrance and the oil mixing with water
Object outlet is connected, and the vinegar liquid outlet is connected with the vinegar liquid entrance.Thus, it is possible to be dropped while improving the energy and making full use of
Acid solution cost during low acidleach.
In some embodiments of the utility model, above system further comprises: purification device, the purification device tool
There are pyrolysis gas entrance and purification pyrolysis gas outlet, the pyrolysis gas entrance is connected with the pyrolysis gas outlet, the purification pyrolysis
Gas outlet is connected with the pyrolysis installation；There are water inlet, fuel inlet, combustion product gases to go out for burning boiler, the burning boiler
Mouth and steam (vapor) outlet, the combustion inlet are connected with the purification pyrolysis gas outlet, the steam (vapor) outlet and the drier phase
Even.Thus, it is possible to energy utilization rate be further increased, to reduce system energy consumption.
In some embodiments of the utility model, the pyrolysis installation is revolving bed pyrolysis oven.
In some embodiments of the utility model, the purification device includes the gas wash tower being sequentially connected, electrically trapped tar oil
Tower, air-introduced machine and desulfurizing tower.Thus, it is possible to significantly improve the quality of purification pyrolysis gas.
In some embodiments of the utility model, above system further comprises: standing device, the standing device tool
There are spent acid entrance, the outlet of upper layer vinegar liquid and subnatant outlet, the spent acid entrance to be connected with spent acid outlet.Thus, it is possible to
Realize the resource utilization of raw material.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the system structure diagram according to the processing corn stover of the utility model one embodiment；
Fig. 2 is the system structure diagram according to the processing corn stover of the utility model further embodiment；
Fig. 3 is the system structure diagram according to the processing corn stover of the utility model another embodiment；
Fig. 4 is the system structure diagram according to the processing corn stover of the utility model another embodiment；
Fig. 5 is the method flow schematic diagram according to the processing corn stover of the utility model one embodiment；
Fig. 6 is the method flow schematic diagram according to the processing corn stover of the utility model further embodiment；
Fig. 7 is the method flow schematic diagram according to the processing corn stover of the utility model another embodiment；
Fig. 8 is the method flow schematic diagram according to the processing corn stover of the utility model another embodiment；
Fig. 9 is the system structure diagram according to the processing corn stover of the utility model another embodiment.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is based on the figure
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the one aspect of the utility model, the utility model proposes a kind of systems for handling corn stover.According to this
The embodiment of utility model, with reference to Fig. 1, which includes: crusher 100, stirring pool 200, drier 300,400 and of pelletizer
Pyrolysis installation 500.
There is corn stover entrance 101 and corn stalk pellets to export for embodiment according to the present utility model, blender 100
102, and be suitable for carrying out break process to corn stover, obtain corn stalk pellets.Specifically, the corn stalk obtained after crushing
The partial size of stalk particle is not less than 8 mesh, can significantly improve the contacting efficiency of corn stover and vinegar liquid in subsequent process, improve jade
The acid leaching efficiency of rice stalk to significantly reduce ash content in corn stover, and then improves gained pyrolysis oil in subsequent pyrolytic process
Yield and calorific value, and gained pyrolytic carbon and pyrolysis gas quality with higher.
Embodiment according to the present utility model, stirring pool 200 have corn stalk pellets entrance 201,202 and of vinegar liquid entrance
Corn stover outlet 203 and spent acid outlet 204 after acidleach, corn stalk pellets entrance 201 and corn stalk pellets outlet 102
It is connected, and is suitable for mixing corn stalk pellets obtained above with vinegar liquid (such as wooden vinegar) and carries out acidleach processing, obtains acidleach
Corn stover and spent acid afterwards.Specifically, corn stalk pellets and vinegar liquid are mixed, so that corn stover carries out acid
Leaching, after be filtered after the completion of acidleach, obtained smoke filtrate continues to drain into stirring pool reuse, and the corn stover of extraction is sent into subsequent
Drying device is dried, and the remaining vinegar liquid in stirring pool is no longer participate in secondary pickling stalk process, is discharged as spent acid.
One embodiment according to the present utility model, during being somebody's turn to do, the corn stalk pellets based on 1kg, the dosage of vinegar liquid
For 15~20L, and leaching time is 2~10h.Utility model people discovery, only can be only achieved reduction under this mixing match
The purpose of ash content in corn stover, and within the scope of this leaching time, corn stover after acidleach with leaching time increase,
Its ash content removal rate gradually increases, and best leaching time is 4~6 hours, during acidleach, need to ceaselessly be stirred to it,
Stirring rate should be uniformly unsuitable too fast.And the removal rate of the corn stover ash content after acidleach is up to 30% or more, wherein right
Potassium, magnesium, the removal effect of silicon are best, and to the removal rate of potassium up to 90%, the Calorific Value in Stem of Maize after removing ash content increases by 20%
~40%, subsequent pyrolysis installation especially revolving bed pyrolysis oven energy consumption 2.4GJ/t is reduced to by 3GJ/t hereinafter, energy conservation 20% with
On.
Embodiment according to the present utility model, drier 300 have corn stover entrance 301 and dry corn stalk after acidleach
Stalk outlet 302, corn stover entrance 301 is connected with corn stover outlet 203 after acidleach after acidleach, and is suitable for obtained above
Corn stover is dried after acidleach, obtains dry corn stover.Specifically, the drying temperature of the drier be 60~
90 DEG C, drying time is not less than 20min, moisture content can from 80% be down to 40% hereinafter, and drying mode can be using direct
Heating or indirect heating.
Embodiment according to the present utility model, pelletizer 400 have dry corn stover entrance 401 and stalk briquette outlet
402, dry corn stover entrance 401 is connected with dry corn stover outlet 302, and is suitable for dry corn stalk obtained above
Stalk carries out briquetting, obtains stalk briquette.Specifically, by the drying corn stover of moisture content < 40% obtained above in temperature 50
DEG C or so be sent directly into pelletizer, the wide 30mm of the stalk briquette that pelletizer squeezes out, high 300mm, long 40mm~50mm, after extruding
Stalk briquette moisture content < 20%, heap density is in 350~380kg/m3Left and right, as raw material, for example revolves for pyrolysis installation
The pyrolysis of rotated bed pyrolysis oven.
Embodiment according to the present utility model, pyrolysis installation 500 have stalk briquette entrance 501, pyrolysis oil gas vent 502
With pyrolytic carbon outlet 503, stalk briquette entrance 501 is connected with stalk briquette outlet 402, and is suitable for stalk pressure obtained above
Block carries out pyrolysis processing under anoxic condition, obtains pyrolysis oil gas and pyrolytic carbon, the pyrolytic carbon yield of generation are down to by 30%
20% or so, the ash content of pyrolytic carbon is substantially reduced, and has higher quality.Specifically, pyrolysis installation 500 is revolving bed pyrolysis
Furnace, and heated using heat accumulation type radiant tube, it is in pyrolysis oven that heat accumulation type radiant tube, which carries out heat radiation by burning fuel,
Heat supply, and monitor material, burner hearth and radiant tube temperature, to accurately control each region temperature, in entire burner hearth sidewall and
Top is provided with several oil gas introduction pipes, it is ensured that and oil gas is cooling outside furnace and separates, so that it is guaranteed that equipment is run steadily in the long term,
Revolving bed pyrolysis oven is 1.6t/h~3.2t/h to the processing capacity of corn stover briquetting.Revolving bed pyrolysis temperature be 500~
800 DEG C, preferably 600~650 DEG C, can according to the treating capacity of corn stover change furnace bottom revolving speed, delivery rate, fabric thickness and
Cloth area, and utility model people is by probing into discovery, optimal operating condition are furnace bottom revolving speed 35min/r, fabric thickness 60mm,
The pyrolytic carbon volatile matter for being pyrolyzed out under this operating condition has reached preferable pyrolysis effect less than 10%.Utility model people discovery, leads to
Crossing the corn stover by above-mentioned after acidleach, successively supply carries out pyrolysis processing into pyrolysis oven after drier and pelletizer,
Due to significantly reducing the ash content in corn stover after acidleach, then through subsequent pyrolysis processing, not only significantly reduce pyrolysis at
This, and the obtained pyrolysis oil yield of pyrolytic process and calorific value are higher, the pyrolysis charcoal ash that can directly recycle, while obtain
Divide and is substantially reduced, pyrolytic carbon and pyrolysis gas quality with higher.
Pass through the corn stover obtained after being crushed according to the system of the processing corn stover of the utility model embodiment
Grain supply is mixed into stirring pool with vinegar liquid, so that vinegar liquid carries out acidleach to corn stalk pellets, jade can be significantly reduced
Ash content in rice stalk, then by corn stover after acidleach, successively supply is pyrolyzed into pyrolysis installation after dry and briquetting
Processing, not only significantly reduces pyrolysis cost, but also the obtained pyrolysis oil yield of pyrolytic process and calorific value are higher, can directly return
It receives and utilizes, while obtained pyrolytic carbon ash content is substantially reduced, pyrolytic carbon and pyrolysis gas quality with higher.As a result, using this
The system of application not only solves in the prior art the directly high problem of pyrolysis corn stover energy consumption, and solves bio-oil
Yield and the low problem of calorific value, while solving the problems, such as that pyrolytic carbon and pyrolysis gas quality are low, to truly realize beautiful
The resource utilization of rice stalk.
Embodiment according to the present utility model, with reference to Fig. 2, the system of above-mentioned processing corn stover further comprises: heat exchange
Device 600 and oily-water seperating equipment 700.
Embodiment according to the present utility model, heat exchanger 600 have cooling water inlet 601, pyrolysis oil gas entrance 602, heat
Vapor outlet 603, pyrolysis gas outlet 604 and oil water mixture outlet 605, pyrolysis oil gas entrance 602 and pyrolysis oil gas vent 502
It is connected, hot vapour outlet 603 is connected with drier 300, and supplies suitable for that will be pyrolyzed oil gas obtained in above-mentioned pyrolysis installation to changing
Indirect heat exchange is carried out with cooling water in hot device, oil gas will carry out isolated pyrolysis gas (90 DEG C or less) and grease is mixed to will be pyrolyzed
Object is closed, while cooling water is heated into hot vapour, supplies through the hot vapour to drying device and uses as dried medium.
Embodiment according to the present utility model, oily-water seperating equipment 700 have oil water mixture entrance 701, bio-oil
Outlet 702 and vinegar liquid outlet 703, oil water mixture entrance 701 and oil water mixture outlet 605 are connected, vinegar liquid export 703 and
Vinegar liquid entrance 202 is connected, and is suitable for above-mentioned isolated oil water mixture carrying out separating treatment, isolated bio-oil
And vinegar liquid, and vinegar liquid is returned in stirring pool and is used.Specifically, can realize water-oil separating by the way of standing.It is practical new
Then type people is supplied above-mentioned isolated vinegar liquid to blender by separating oil water mixture obtained above
In carry out using supplying to stirring pool the content of ashes reduced in corn stover by self-produced vinegar liquid, and fully meet
Corn stover acidleach needs, and cost needed for reducing purchase vinegar liquid realizes the self-sufficient of raw material, improves the yield of bio-oil
And pyrolysis product quality, increase benefit.As a result, by will obtained in pyrolysis installation pyrolysis oil gas supply into heat exchanger into
The Exposure degree for being pyrolyzed oil gas, can be used for the drying process of corn stover after acidleach, reduce the same of energy consumption by row heat exchange
Shi Tigao using energy source, while may be implemented to divide pyrolysis gas and oil water mixture in pyrolysis oil gas after heat exchanger exchanges heat
From, then isolated oil water mixture is supplied and is separated into oily-water seperating equipment, it can be with isolated biomass
Oil and vinegar liquid, and the vinegar liquid can be back to the acidleach process of corn stalk pellets, realize that internal system is self-sufficient.
Embodiment according to the present utility model, with reference to Fig. 3, the system of above-mentioned processing corn stover further comprises: purification
Device 800 and burning boiler 900.
Embodiment according to the present utility model, purification device 800 have pyrolysis gas entrance 801 and purification pyrolysis gas outlet
802, pyrolysis gas entrance 801 is connected with pyrolysis gas outlet 604, and purification pyrolysis gas outlet 802 is connected with pyrolysis installation 500, and suitable
In the isolated pyrolysis gas of above-mentioned heat exchanger is just carried out purified treatment, it is purified pyrolysis gas, and by the purification pyrolysis gas
A part supply used into pyrolysis installation as burning, such as conduct in heat accumulation type radiant tube in revolving bed pyrolysis oven
Fuel uses, and the purification pyrolysis gas calorific value of generation is higher than 2500kcal/m3, the corn stover gas yield after acidleach is by original
35% increases to 45%, fully meets heat accumulation type radiant tube fuel combustion needs in revolving bed pyrolysis oven.Specifically, purification device
Including gas wash tower, electrically trapped tar oil tower, air-introduced machine and the desulfurizing tower being sequentially connected.It should be noted that gas wash tower, electrically trapped tar oil
The condition of each step is routine operation in the prior art in tower, air-introduced machine and desulfurizing tower, and those skilled in the art can basis
Actual needs is selected.
Embodiment according to the present utility model, burning boiler 900 have water inlet 901, fuel inlet 902, combustion product gases
Outlet 903 and steam (vapor) outlet 904, combustion inlet 902 are connected with purification pyrolysis gas outlet 802, steam (vapor) outlet 904 and drier
300 are connected, and are suitable for supplying the another part for the purification pyrolysis gas that above-mentioned purification obtains burning into burning boiler, obtain
It supplies to drier to combustion product gases and steam, and using steam as dried medium.Specifically, purification pyrolysis pneumatic transmission extremely burns
Boiler, the high-temperature steam of production is up to 350-400 DEG C.Hereby it is achieved that system fuel automatically supplies, thus reduce to the external world according to
Rely, so that the system operatio is more flexible.
Embodiment according to the present utility model, with reference to Fig. 4, the system of above-mentioned processing corn stover further comprises standing dress
Set 1000.
Embodiment according to the present utility model, standing device 1000 has spent acid entrance 1001, upper layer vinegar liquid outlet 1002
With subnatant outlet 1003, spent acid entrance 1001 is connected with spent acid outlet 204, and is suitable for carrying out in spent acid obtained in blender
Stewing process, thus the upper layer vinegar liquid and subnatant of isolated high-quality.Specifically, time of repose should at six months or more,
The upper layer vinegar liquid available higher vinegar liquid of purity after rectification process, the vinegar liquid can be with export trades, to improve economic effect
Benefit.
The utility model In another aspect, be using above-mentioned processing corn stover the utility model proposes a kind of
The method of system processing corn stover.Embodiment according to the present utility model, with reference to Fig. 5, this method comprises:
S100: corn stover is supplied into crusher and carries out break process
In the step, corn stover is supplied into crusher and carries out break process, obtains corn stalk pellets.Specifically
, the partial sizes of the corn stalk pellets obtained after crushing is not less than 8 mesh, can significantly improve in subsequent process corn stover with
The contacting efficiency of vinegar liquid, improves the acid leaching efficiency of corn stover, to significantly reduce ash content in corn stover, and then after raising
The yield and calorific value of gained pyrolysis oil in continuous pyrolytic process, and gained pyrolytic carbon and pyrolysis gas quality with higher.
S200: corn stalk pellets are supplied into stirring pool and are mixed with vinegar liquid
In the step, corn stalk pellets obtained above are supplied into stirring pool and mixes and stirs with vinegar liquid (such as wooden vinegar)
It mixes and carries out acidleach processing, obtain corn stover and spent acid after acidleach.Specifically, corn stalk pellets mix stirring with vinegar liquid
It mixes, so that corn stover carries out acidleach, after be filtered after the completion of acidleach, obtained smoke filtrate continues to drain into stirring pool reuse,
The corn stover of extraction is sent into subsequent drying device and is dried, and the remaining vinegar liquid in stirring pool is no longer participate in secondary pickling straw
Stalk process is discharged as spent acid.
One embodiment according to the present utility model, during being somebody's turn to do, the corn stalk pellets based on 1kg, the dosage of vinegar liquid
For 15~20L, and leaching time is 2~10h.Utility model people discovery, only can be only achieved reduction under this mixing match
The purpose of ash content in corn stover, and within the scope of this leaching time, corn stover after acidleach with leaching time increase,
Its ash content removal rate gradually increases, and best leaching time is 4~6 hours, during acidleach, need to ceaselessly be stirred to it,
Stirring rate should be uniformly unsuitable too fast.And the removal rate of the corn stover ash content after acidleach is up to 30% or more, wherein right
Potassium, magnesium, the removal effect of silicon are best, and to the removal rate of potassium up to 90%, the Calorific Value in Stem of Maize after removing ash content increases by 20%
~40%, subsequent pyrolysis installation especially revolving bed pyrolysis oven energy consumption 2.4GJ/t is reduced to by 3GJ/t hereinafter, energy conservation 20% with
On.
S300: corn stover after acidleach is supplied and is dried into drier
In the step, corn stover after acidleach obtained above is supplied and is dried into drier, is done
Dry corn stover.Specifically, the drying temperature of the drier is 60~90 DEG C, drying time is not less than 20min, and moisture content can be from
80% be down to 40% hereinafter, and drying mode can be using directly heating or indirect heating.
S400: dry corn stover is supplied into pelletizer and carries out briquetting
In the step, dry corn stover obtained above is supplied into pelletizer and carries out briquetting, obtains stalk briquette.
Specifically, the drying corn stover of moisture content < 40% obtained above is sent directly into pelletizer in temperature 50 C or so, make
The wide 30mm of stalk briquette, high 300mm, the long 40mm~50mm that grain machine squeezes out, stalk briquette moisture content < after extruding
20%, heap density is in 350~380kg/m3Left and right is pyrolyzed as raw material for pyrolysis installation such as revolving bed pyrolysis oven.
S500: stalk briquette is supplied into pyrolysis installation and carries out pyrolysis processing
In the step, stalk briquette obtained above is supplied into pyrolysis installation and is carried out at pyrolysis under anoxic condition
Reason, obtains pyrolysis oil gas and pyrolytic carbon, the pyrolytic carbon yield of generation are down to 20% or so by 30%, and the ash content of pyrolytic carbon obviously drops
Low, pyrolytic carbon and pyrolysis gas have higher quality, and the yield of pyrolysis oil is significantly raised.Specifically, pyrolysis installation is rotation
Bed pyrolysis oven, and heated using heat accumulation type radiant tube, it is heat that heat accumulation type radiant tube, which carries out heat radiation by burning fuel,
Heat supply in furnace is solved, and monitors material, burner hearth and radiant tube temperature, so that each region temperature is accurately controlled, in entire burner hearth
Side wall and top are provided with several oil gas introduction pipes, it is ensured that oil gas is cooling outside furnace and separates, so that it is guaranteed that equipment is steady for a long time
Fixed operation, revolving bed pyrolysis oven are 1.6t/h~3.2t/h to the processing capacity of corn stover briquetting.Revolving bed pyrolysis temperature is
500~800 DEG C, preferably 600~650 DEG C can change furnace bottom revolving speed, delivery rate, cloth according to the treating capacity of corn stover
Thickness and cloth area, and utility model people is furnace bottom revolving speed 35min/r, fabric thickness by probing into discovery, optimal operating condition
60mm, the pyrolytic carbon volatile matter for being pyrolyzed out under this operating condition have reached preferable pyrolysis effect less than 10%.Utility model human hair
It is existing, by the way that by the above-mentioned corn stover after acidleach, successively supply is pyrolyzed into pyrolysis oven after drier and pelletizer
Processing due to significantly reducing the ash content in corn stover after acidleach, then through subsequent pyrolysis processing, not only significantly reduces heat
Cost is solved, and the obtained pyrolysis oil yield of pyrolytic process and calorific value are higher, the pyrolysis that can directly recycle, while obtain
Charcoal ash point are substantially reduced, pyrolytic carbon and pyrolysis gas quality with higher.
Pass through the corn stover obtained after being crushed according to the method for the processing corn stover of the utility model embodiment
Grain supply is mixed into stirring pool with vinegar liquid, so that vinegar liquid carries out acidleach to corn stalk pellets, jade can be significantly reduced
Ash content in rice stalk, then by corn stover after acidleach, successively supply is pyrolyzed into pyrolysis installation after dry and briquetting
Processing, not only significantly reduces pyrolysis cost, but also the obtained pyrolysis oil yield of pyrolytic process and calorific value are higher, can directly return
It receives and utilizes, while obtained pyrolytic carbon ash content is substantially reduced, pyrolytic carbon and pyrolysis gas quality with higher.As a result, using this
The method of application not only solves in the prior art the directly high problem of pyrolysis corn stover energy consumption, and solves bio-oil
Yield and the low problem of calorific value, while solving the problems, such as that pyrolytic carbon and pyrolysis gas quality are low, to truly realize beautiful
The resource utilization of rice stalk.
Embodiment according to the present utility model, with reference to Fig. 6, the method for above-mentioned processing corn stover further comprises:
S600: pyrolysis oil gas is supplied and is exchanged heat into heat exchanger with cooling water, and hot vapour is supplied to S300
In the step, pyrolysis oil gas obtained in above-mentioned pyrolysis installation is supplied into heat exchanger and is carried out indirectly with cooling water
Heat exchange, so that pyrolysis oil gas is carried out isolated pyrolysis gas (90 DEG C or less) and oil water mixture, while cooling water is heated
Become hot vapour, is used through the drying device that the hot vapour is supplied to step S300 as dried medium.
S700: oil water mixture is supplied into oily-water seperating equipment and carries out separating treatment, and vinegar liquid is returned into S200
In the step, above-mentioned isolated oil water mixture is supplied into oily-water seperating equipment and carries out separating treatment,
Isolated bio-oil and vinegar liquid, and will be used in the stirring pool of vinegar liquid return step S200.Specifically, can be using standing
Mode realize water-oil separating.By separating oil water mixture obtained above, then by above-mentioned isolated vinegar
Liquid, which is supplied into blender, to carry out using supplying to stirring pool the ash content reduced in corn stover by self-produced vinegar liquid and contain
Amount, and corn stover acidleach needs are fully met, cost needed for reducing purchase vinegar liquid is realized the self-sufficient of raw material, is mentioned
The yield of high pyrolysis product increases benefit.As a result, by will obtained in pyrolysis installation pyrolysis oil gas supply into heat exchanger into
The Exposure degree for being pyrolyzed oil gas, can be used for the drying process of corn stover after acidleach, reduce the same of energy consumption by row heat exchange
Shi Tigao using energy source, while may be implemented to divide pyrolysis gas and oil water mixture in pyrolysis oil gas after heat exchanger exchanges heat
From, then isolated oil water mixture is supplied and is separated into oily-water seperating equipment, it can be with isolated biomass
Oil and vinegar liquid, and the vinegar liquid can be back to the acidleach process of corn stalk pellets, realize that internal system is self-sufficient.
Embodiment according to the present utility model, with reference to Fig. 7, the method for above-mentioned processing corn stover further comprises:
S800: pyrolysis gas being supplied into purification device and carries out purified treatment, and a part for purifying pyrolysis gas is supplied
To step S500
In the step, the isolated pyrolysis gas of above-mentioned heat exchanger is supplied into purification device and carries out purified treatment, is obtained
Make to purification pyrolysis gas, and by a part supply of the purification pyrolysis gas in the pyrolysis installation into step S500 as burning
With, such as it is used as fuel to use as in heat accumulation type radiant tube in revolving bed pyrolysis oven, the purification of generation is pyrolyzed gas calorific value and is higher than
2500kcal/m3, the corn stover gas yield after acidleach increases to 45% by original 35%, fully meets revolving bed pyrolysis
Heat accumulation type radiant tube fuel combustion needs in furnace.Specifically, purification device include the gas wash tower being sequentially connected, electrically trapped tar oil tower,
Air-introduced machine and desulfurizing tower.It should be noted that the condition of each step is in gas wash tower, electrically trapped tar oil tower, air-introduced machine and desulfurizing tower
Routine operation in the prior art, those skilled in the art can select according to actual needs.
S900: the another part for purifying pyrolysis gas is supplied and is burnt into burning boiler, and steam is supplied to step
Rapid S300
In the step, the another part for the purification pyrolysis gas that above-mentioned purification obtains is supplied and is fired into burning boiler
It burns, obtains combustion product gases and steam, and steam is supplied into the drier into step S300 as dried medium.Specifically, should
Purification pyrolysis pneumatic transmission is to burning boiler, and the high-temperature steam of production is up to 350-400 DEG C.Hereby it is achieved that system fuel automatically supplies, from
And reduce and the external world is relied on, so that the system operatio is more flexible.
Embodiment according to the present utility model, with reference to Fig. 8, the method for above-mentioned processing corn stover further comprises:
S1000: spent acid is supplied into standing device and is stood
In the step, spent acid obtained in step S200 blender is supplied and carries out stewing process into standing device, from
And the upper layer vinegar liquid and subnatant of isolated high-quality.Specifically, time of repose should be at six months or more, upper layer vinegar liquid warp
The available higher vinegar liquid of purity after rectification process is crossed, which can be with export trade, to increase economic efficiency.
It should be noted that feature and advantage described in the above-mentioned system for processing corn stover are equally applicable to this
The method for handling corn stover, details are not described herein again.
Below with reference to specific embodiment, the utility model is described, it should be noted that these embodiments are only
Descriptive, without limiting the utility model in any way.
Embodiment 1
With reference to Fig. 9, corn stover is supplied into crusher and carries out break process, obtaining corn stalk pellets, (partial size is big
In 8 mesh), then corn stalk pellets are supplied into stirring pool and are mixed with the wooden vinegar, corn stover and useless is obtained after acidleach
Acid (is based on 1kg corn stalk pellets, the dosage of the wooden vinegar is 15L, and leaching time is 6 hours), after acidleach corn stover supply to
(drying temperature is 60 DEG C, and drying time is not less than 20min) is dried in drier, obtains dry corn stover and (contains
Water rate is lower than 40%)；Dry corn stover, which is supplied into pelletizer, carries out briquetting, obtain stalk briquette (the wide 30mm of stalk briquette,
High 300mm, long 40mm, stalk briquette moisture content < 20% after extruding, heap density is in 380kg/m3), stalk briquette supply to
Pyrolysis processing (650 DEG C of pyrolysis processing temperature, furnace bottom revolving speed 35min/r, fabric thickness 60mm) are carried out in revolving bed pyrolysis oven,
Pyrolysis oil gas and pyrolytic carbon are obtained, pyrolysis oil gas is supplied and is exchanged heat into heat exchanger with cooling water, hot vapour, pyrolysis gas are obtained
And oil water mixture, and hot vapour is supplied to drier as dried medium, oil water mixture is supplied to oily-water seperating equipment
Middle carry out separating treatment obtains bio-oil and vinegar liquid, and by the stirring pool in vinegar liquid return step S200, pyrolysis gas is supplied
Purified treatment is carried out into purification device, is purified pyrolysis gas, and a part supply for purifying pyrolysis gas is hot to revolving bed
It solves and is used as fuel in the heat accumulation type radiant tube of furnace, the another part for purifying pyrolysis gas is supplied and is burnt into burning boiler,
Combustion product gases and steam are obtained, and steam is supplied into drier and is used as dried medium, it will be isolated in blender
Spent acid supply to stand device in stood, isolated upper layer vinegar liquid and subnatant.
Embodiment 2
With reference to Fig. 9, corn stover is supplied into crusher and carries out break process, obtaining corn stalk pellets, (partial size is big
In 8 mesh), then corn stalk pellets are supplied into stirring pool and are mixed with the wooden vinegar, corn stover and useless is obtained after acidleach
Acid (is based on 1kg corn stalk pellets, the dosage of the wooden vinegar is 20L, and leaching time is 4 hours), after acidleach corn stover supply to
(drying temperature is 90 DEG C, and drying time is not less than 20min) is dried in drier, obtains dry corn stover and (contains
Water rate is lower than 40%)；Dry corn stover, which is supplied into pelletizer, carries out briquetting, obtain stalk briquette (the wide 30mm of stalk briquette,
High 300mm, long 50mm, stalk briquette moisture content < 20% after extruding, heap density is in 350kg/m3), stalk briquette supply to
Pyrolysis processing (600 DEG C of pyrolysis processing temperature, furnace bottom revolving speed 35min/r, fabric thickness 60mm) are carried out in revolving bed pyrolysis oven,
Pyrolysis oil gas and pyrolytic carbon are obtained, pyrolysis oil gas is supplied and is exchanged heat into heat exchanger with cooling water, hot vapour, pyrolysis gas are obtained
And oil water mixture, and hot vapour is supplied to drier as dried medium, oil water mixture is supplied to oily-water seperating equipment
Middle carry out separating treatment obtains bio-oil and vinegar liquid, and by the stirring pool in vinegar liquid return step S200, pyrolysis gas is supplied
Purified treatment is carried out into purification device, is purified pyrolysis gas, and a part supply for purifying pyrolysis gas is hot to revolving bed
It solves and is used as fuel in the heat accumulation type radiant tube of furnace, the another part for purifying pyrolysis gas is supplied and is burnt into burning boiler,
Combustion product gases and steam are obtained, and steam is supplied into drier and is used as dried medium, it will be isolated in blender
Spent acid supply to stand device in stood, isolated upper layer vinegar liquid and subnatant.
1 corn stalk raw material of table and embodiment 1,2 Industrial Analysis
As seen from the above table, the stalk after wood vinegar acidleach, content of ashes are substantially reduced, and the removal rate of acidleach for 24 hours is
35% or so, volatile matter content obviously increases.
2 thermal decomposition product yield (butt) of table
As seen from the above table, with the corn stover of wood vinegar acidleach, tar yield increases to 28% or so by 21.82%, and gas produces
Rate is down to 20% or so by 21.39%, and charcoal yield is down to 32.5% or so by 35.08%, and aquatic products rate is down to 20% from 21.7%
Left and right.
3 pyrolysis product quality of table
Compared with corn stalk raw material pyrolytic carbon, content of ashes is substantially reduced stalk pyrolytic carbon after acidleach, reduces 14%,
Fixed carbon content has increased slightly；In addition, the stalk pyrolysis gas calorific value after acidleach is slightly higher, about 2500kcal/m3。
Note: in table 1- table 3 the corresponding data of corn stalk raw material be lack the application acid solution process and gained experiment number
According to.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (4)
1. a kind of system for handling corn stover characterized by comprising
There is corn stover entrance and corn stalk pellets to export for crusher, the crusher；
Stirring pool, the stirring pool is with corn stover outlet and spent acid after corn stalk pellets entrance, vinegar liquid entrance and acidleach
Outlet, the corn stalk pellets entrance are connected with corn stalk pellets outlet；
Drier, the drier have corn stover entrance and dry corn stover outlet after acidleach, corn after the acidleach
Stalk entrance is connected with corn stover outlet after the acidleach；
Pelletizer, the pelletizer have dry corn stover entrance and stalk briquette outlet, the dry corn stover entrance
It is connected with the dry corn stover outlet；
Pyrolysis installation, the pyrolysis installation have stalk briquette entrance, pyrolysis oil gas vent and pyrolytic carbon outlet, the stalk pressure
Block entrance is connected with stalk briquette outlet.
2. system according to claim 1, which is characterized in that further comprise:
Heat exchanger, the heat exchanger have cooling water inlet, pyrolysis oil gas entrance, hot vapour outlet, pyrolysis gas outlet and grease mixed
Object outlet is closed, the pyrolysis oil gas entrance is connected with the pyrolysis oil gas vent, and the hot vapour outlet is connected with the drier；
Oily-water seperating equipment, the oily-water seperating equipment have oil water mixture entrance, bio-oil outlet and vinegar liquid outlet, institute
It states oil water mixture entrance to be connected with oil water mixture outlet, the vinegar liquid outlet is connected with the vinegar liquid entrance.
3. system according to claim 1 or 2, which is characterized in that further comprise:
Purification device, the purification device have pyrolysis gas entrance and purification pyrolysis gas outlet, the pyrolysis gas entrance with it is described
Pyrolysis gas outlet is connected, and the purification pyrolysis gas outlet is connected with the pyrolysis installation；
Burning boiler, the burning boiler have water inlet, fuel inlet, combustion product gases outlet and steam (vapor) outlet, the burning
Entrance is connected with the purification pyrolysis gas outlet, and the steam (vapor) outlet is connected with the drier,
The pyrolysis installation is revolving bed pyrolysis oven,
The purification device includes the gas wash tower being sequentially connected, electrically trapped tar oil tower, air-introduced machine and desulfurizing tower.
4. system according to claim 1, which is characterized in that further comprise:
Stand device, the standings device have spent acid entrance, upper layer vinegar liquid outlet and subnatant outlet, the spent acid entrance and
The spent acid outlet is connected.
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| CN201821809288.7U CN209383701U (en) | 2018-11-02 | 2018-11-02 | The system for handling corn stover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504405A (en) * | 2018-11-02 | 2019-03-22 | 石首市博锐德生物科技有限公司 | The system and method for handling corn stover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504405A (en) * | 2018-11-02 | 2019-03-22 | 石首市博锐德生物科技有限公司 | The system and method for handling corn stover |
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