CN108795455A - A kind of method of stalk production biomass carbon - Google Patents
A kind of method of stalk production biomass carbon Download PDFInfo
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- CN108795455A CN108795455A CN201810622236.7A CN201810622236A CN108795455A CN 108795455 A CN108795455 A CN 108795455A CN 201810622236 A CN201810622236 A CN 201810622236A CN 108795455 A CN108795455 A CN 108795455A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 61
- 239000002028 Biomass Substances 0.000 title claims abstract description 59
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000002245 particle Substances 0.000 claims abstract description 67
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000003546 flue gas Substances 0.000 claims abstract description 51
- 239000007789 gas Substances 0.000 claims abstract description 50
- 238000000197 pyrolysis Methods 0.000 claims abstract description 47
- 238000001035 drying Methods 0.000 claims abstract description 46
- 238000002485 combustion reaction Methods 0.000 claims abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000001301 oxygen Substances 0.000 claims abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 14
- 239000010902 straw Substances 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 7
- 238000004227 thermal cracking Methods 0.000 claims description 26
- 239000007787 solid Substances 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 4
- 235000021419 vinegar Nutrition 0.000 claims description 4
- 239000000052 vinegar Substances 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 239000011276 wood tar Substances 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract description 2
- 238000003763 carbonization Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 14
- 238000005201 scrubbing Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000004064 recycling Methods 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 4
- 239000003610 charcoal Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010000 carbonizing Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention belongs to biomass utilization technologies fields, specifically provide a kind of method of straw charring.The present invention after pyrolysis gas dedusting, washing by will burn, then the flue gas of generation is used as to drying and the charing heat source of stalk particle, can reduce the consumption of the heat source energy to greatest extent.By the way that the flue gas of generation is in contact with stalk particle when dry, the air around stalk particle can be replaced into the extremely low combustion product gases of oxygen content, limit oxygen environment of the stalk particle when starting charing has been built, contributed to the raising of biomass carbon quality；Can also take away simultaneously it is dry caused by vapor, in this way and reduce the burden of follow-up carbonization system, avoid because vapor there are due to the adverse effect of follow-up system.The method of stalk production biomass carbon provided by the invention can effectively reduce energy consumption, reduce thermal loss.
Description
Technical field
The invention belongs to biomass utilization technologies fields, specifically provide a kind of method of stalk production biomass carbon.
Background technology
Stalk is treasured with it, and that abandons causes harm.Data show, China produces about 1,400,000,000 tons of agriculture and forestry organic waste material per year, wherein corn,
The stalk of the staple crops such as rice, wheat is up to 700,000,000 tons, wherein returning to the field is only realized less than 1/3, and stalk fertilizerization is sharp
With rate less than 20%.In fact, straw charring -- returning to the field technology is a kind of ideal straw utilization method, straw charring refer to
Make stalk be pyrolyzed to form stable rich carbon product under the conditions of anoxic and certain temperature, that is to say biomass carbon.Biomass carbon has
Larger porosity and specific surface area, stronger adsorption capacity, resistance to oxidation and antibiont capacity of decomposition, therefore can be widely applied to
Soil improvement increases soil fertility, as fertilizer slow-release formulation, carbon fixation and emission reduction etc..If stalk pyrolysis charring being capable of scale hair
Exhibition, stalk can also be done step-by-step from waste to the magnificent of recycling and turn round.
However, peasant in order to save time and human cost, still selects the modes such as traditional burning to handle straw at present
Stalk.The wasting of resources brought and environmental pollution problem are burned to fundamentally solve stalk large area, solves stalk and agricultural
The problem that waste recycles realizes that the industrialization of straw resource multipath utilizes, must just develop new technology, really make
Stalk comprehensive utilization is that peasant brings practical interests, can from bottom to top spontaneous positive popularization straw charring technology be answered
With making peasant or linked groups actively go to store up straw, sustainable health development may be implemented using the enterprise of straw.
How consumption to the energy is reduced while ensureing to carbonize quality, and it is always this field to reduce production cost
The research hotspot of technical staff, such as Chinese patent literature CN107541224A disclose a kind of biomass continuous carbon chemical industry
Skill, the technology realize charing fuel by the way that biogas body portion caused by biomass cracking is used as rotary furnace fuel
It automatically supplies.However, the technology is limited to the consumption reduction of the energy, there are still the considerable energy in entire continuously carbonizing technique
Consumption and thermal loss.
So how the consumption of the energy and thermal loss in straw splitting biomass carbon are reduced to greatest extent,
And then realize being greatly lowered for production cost, it is still those skilled in the art's problem urgently to be resolved hurrily.
Invention content
It is an object of the invention to solve stalk in the prior art to produce the higher defect of biomass carbon cost, Jin Erti
For a kind of method that energy consumption is few, thermal loss is low, the stalk of low production cost produces biomass carbon.
The above-mentioned purpose of the present invention is achieved through the following technical solutions：
A kind of method of stalk production biomass carbon, including,
(1) the dry, thermal cracking by stalk particle, obtains pyrolysis product；
(2) gas solid separation is carried out to the pyrolysis product, obtains pyrolysis gas and biomass carbon；
(3) by the pyrolysis gas dedusting, washing after-combustion, the flue gas of generation, which is delivered in the step (1), is used as stalk
The heat source of particle drying and thermal cracking；
When carrying out described dry, the flue gas is contacted with stalk particle, displaced air.
There are tightly packed regions with before charing after the drying for the stalk particle, will dry the atmosphere of stalk particle
It is separated with the atmosphere of charing stalk particle.
The flue gas is first used as the heat source of thermal cracking stalk particle, and after discharging heat, a part is used as dry stalk particle
Heat source, a part with dry in stalk particle contact, displaced air.
The temperature of the drying is 110~150 DEG C.
The time of the drying is 60~90min.
The temperature of the thermal cracking is 430~530 DEG C.
The time of the thermal cracking is 60~90min.
The washing of the pyrolysis gas is carried out by the way of spray；
Spray liquid obtains wood vinegar and wood tar by water-oil separating.
Flue gas, the flue gas as straw thermal cracking heat source and the flue gas as stalk drying source contacted with stalk particle
After completing heat release, heat recovery and further purification are also carried out, air is then discharged into.
The drying and/or the pyrolysis realize that the external-heat revolving burner includes interior in external-heat revolving burner
The clip cavity that cylinder, outer barrel and the two are formed, the flue gas that the burning generates are passed through the clip cavity and realize heat release.
The flue gas is passed through the inner cylinder of drying external-heat revolving burner, airflow direction and stalk particle transporting direction phase
Instead, to realize the displacement to air.
Technical scheme of the present invention has the advantages that：
1. the method for stalk production biomass carbon provided by the invention, by will burn after pyrolysis gas dedusting, washing,
The flue gas of generation is used as dry and charing stalk particle heat source again, the consumption of the heat source energy can be reduced to greatest extent.
By the way that the flue gas of generation is in contact with stalk particle when dry, the air around stalk particle can be replaced into oxygen content
Extremely low combustion product gases have built stalk particle and have carbonized initial limit oxygen environment, contributed to the raising of biomass carbon quality；Together
When, the replacement process of flue gas can also take away dry generated vapor, reduce the burden of follow-up carbonization system again in this way,
Avoid because vapor there are due to the adverse effect of follow-up system.
In the prior art, Negative pressure often is carried out using to carbonizing apparatus, the operation of inflated with nitrogen displacement ensures to carbonize
Limit oxygen environment in stove realizes that negative pressure, nitrogen protection need to increase process equipment, increases fixed investment cost.Sealing occurs
When problem, subnormal ambient is easy to cause that extraneous gas enters retort and oxygen content increases in producer, brings charcoal loss very
To burning, security risk is caused.And the present invention just carries out air using in drying stage to stalk particle initiatively
Displacement builds limit oxygen environment, avoids the generation of the above situation.
So the method for stalk production biomass carbon provided by the invention can effectively reduce energy consumption, heat is reduced
Amount loss.
2. the method for stalk production biomass carbon provided by the invention, by further limiting caused by pyrolysis gas burning
The heat source that high-temperature flue gas is first used as charing is further used as dry heat source, can further improve efficiency of utilization；By into one
Step limits the combustion air that the flue gas after drying oven inner cylinder has been replaced air burns as pyrolysis gas, and the sky displaced is utilized
Oxygen in gas；By limiting time and the temperature of dry and thermal cracking, make biomass in middle low temperature, at a slow speed thermal cracking, and protect
Card charing quality；By being further processed and purifying to pyrolysis gas, can obtain wood vinegar, wood tar etc. by-products, together
When reduce combustion chamber in burn caused by dust；
3. the method for stalk production biomass carbon provided by the invention, by limiting it in the dry of external-heat revolving burner form
It is carried out in dry stove and retort, can preferably highlight the advantage of method provided by the present invention；By by airflow direction and stalk
Particulate transportation direction is set on the contrary, can more preferably realize drying and preheating to stalk particle, and take away more vapor；It is logical
It crosses and heat secondary recovery is carried out to the flue gas for releasing heat in drying oven and retort, can realize tow taste heat
Recycling improves heat utilization ratio.
Description of the drawings
In order to illustrate more clearly of the technical solution in the specific embodiment of the invention, specific implementation mode will be retouched below
Attached drawing needed in stating is briefly described, it should be apparent that, the accompanying drawings in the following description is some realities of the present invention
Mode is applied, it for those of ordinary skill in the art, without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the process schematic representation that the stalk that embodiment 2 provides produces biomass carbon method.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.In addition, invention described below different embodiments
In involved technical characteristic can be combined with each other as long as they do not conflict with each other.
Embodiment 1
A kind of method of stalk production biomass carbon is present embodiments provided, including,
Stalk particle is dried and is preheated under hot mode outside, then by the stalk after drying and preheating in limit oxygen
Under the conditions of carry out thermal cracking, obtain pyrolysis product.
Gas solid separation is carried out to obtained pyrolysis product, obtains pyrolysis gas and biomass carbon.
It after gained pyrolysis gas is dusted and is washed successively, burns, the generated flue gas that burns is delivered to stalk
The drying of particle and cracking step are used as heat source.
Meanwhile when dry, some flue gas is in direct contact with stalk particle, by the sky around stalk particle
Gas is replaced into flue gas, while also taking away vapor caused by stalk particle drying.
Embodiment 2
A kind of method of stalk production biomass carbon is present embodiments provided, including,
First, stalk particle is made by crushing, granulation or briquetting processing system in stalk.
Then, stalk particle is sent into outer hot rotary drying furnace by feeding system, which has inner cylinder, outer barrel
Body and it is sandwiched in clip cavity between the two, stalk particle enters the inner cylinder of drying oven, preheated and dried at 150 DEG C.
Then, it is then passed by stalk particle that is dry and preheating and rotates pyrolysis oven into external-heat, likewise, the stove
Also there is inner cylinder, outer barrel and be sandwiched in clip cavity between the two, stalk particle enters inner cylinder, is cracked at 530 DEG C,
Generate thermal cracking gas and biomass carbon.
The thermal cracking gas and biomass carbon of generation are detached by gas-solid separating device, and obtained biomass carbon is delivered to cooling
Biomass carbon product is obtained after system.Thermal cracking gas is obtained after the dust removal process of deduster, is washed into scrubbing tower,
It selects the mode of spray to be washed in the present embodiment, cleaning solution is sent into oil-water separation system, gained oil phase is wood tar,
Gained water phase is wood vinegar.The gas come out by scrubbing tower passes through surge tank after the further gas-liquid separation of demister
Into combustion chambers burn, high-temperature flue gas is generated.
Then, generated high-temperature flue gas is first delivered into the clip cavity of rotation pyrolysis oven, release heat is followed by defeated
It is sent into rotary drying stove, heat source is provided for the drying of stalk particle.Flue gas enters the clip cavity and inner cylinder of rotary drying stove simultaneously.
Rotary drying stove and rotate pyrolysis oven between setting there are one stalk particle tightly packed area, the region can be good at by
The atmosphere of drying oven and pyrolysis oven separates so that stalk particle maintains limited oxygen atmosphere and dry state to enter pyrolysis oven.By doing
The flue gas that dry stove inner cylinder comes out is conveyed into the combustion air that combustion chamber is burnt as pyrolysis gas, and the cigarette come out by drying oven clip cavity
Gas enters waste heat boiler and carries out the recycling again of heat, and is purified, and air can be directly discharged into after reaching discharge standard,
It will not cause environmental pressure and environmental pollution.
According to industrial design and actual production demand, the ratio of combustion product gases can be flexibly selected, when pyrolysis tolerance is more than needed
When, it a part of can be burnt by the pyrolysis gas of scrubbing tower out and generate flue gas, a part is used as the storage of clean biometric matter gas, separately makees him
With.A part of high-temperature flue gas of combustion chamber output can also be directly used in waste heat boiler.
Method provided in this embodiment, can not only adequately utilize flue gas waste heat, and due to part of smoke with
During stalk particle is contacted, stalk particle is adsorbed the impurity in flue gas, has also achieved the effect of dedusting.
Data show that the PM10 of residual heat boiler for exchanging heat after-purification is only 150 μ g/m3(average daily), PM2.5 are only 75 μ g/m3(average daily), SO2
Only 75 μ g/m3(average daily), NOxOnly 250 μ g/m3(average daily).
Embodiment 3
A kind of method of stalk production biomass carbon is present embodiments provided, including,
First, stalk particle is made by crushing, granulation or briquetting processing system in stalk.
Then, stalk particle is sent into outer hot rotary drying furnace by feeding system, which has inner cylinder, outer barrel
Body and it is sandwiched in clip cavity between the two, stalk particle enters the inner cylinder of drying oven, preheated and dried at 110 DEG C.
Then, it is then passed by stalk particle that is dry and preheating and rotates pyrolysis oven into external-heat, likewise, the stove
Also there is inner cylinder, outer barrel and be sandwiched in clip cavity between the two, stalk particle enters inner cylinder, is cracked at 430 DEG C,
Generate thermal cracking gas and biomass carbon.
The thermal cracking gas and biomass carbon of generation are detached by gas-solid separating device, and obtained biomass carbon is delivered to cooling
Biomass carbon product is obtained after system.Thermal cracking gas is obtained after the dust removal process of deduster, is washed into scrubbing tower,
Gas after washing enters combustion chambers burn by surge tank, generates high-temperature flue gas.
Then, generated high-temperature flue gas is first delivered into the clip cavity of rotation pyrolysis oven, release heat is followed by defeated
It is sent into rotary drying stove, heat source is provided for the drying of stalk particle.Flue gas enters the clip cavity and inner cylinder of rotary drying stove simultaneously.
Flue gas goes in the same direction in drying oven inner cylinder with stalk particle conveying direction, completes displacement to air, while by stalk particle
Vapor takes away caused by dry, the flue gas come out by drying oven inner cylinder be conveyed into combustion chamber burn as pyrolysis gas it is combustion-supporting
Air, and the flue gas come out by drying oven clip cavity enters waste heat boiler and carries out the recycling again of heat, and purified, it reaches
It can be directly discharged into air after to discharge standard, environmental pressure and environmental pollution will not be caused.
According to industrial design and actual production demand, the ratio of combustion product gases can be flexibly selected, when pyrolysis tolerance is more than needed
When, it a part of can be burnt by the pyrolysis gas of scrubbing tower out and generate flue gas, a part is used as the storage of clean biometric matter gas, separately makees him
With.
Embodiment 4
A kind of method of stalk production biomass carbon is present embodiments provided, including,
First, stalk particle is made by crushing, granulation or briquetting processing system in stalk.
Then, stalk particle is sent into outer hot rotary drying furnace by feeding system, which has inner cylinder, outer barrel
Body and it is sandwiched in clip cavity between the two, stalk particle enters the inner cylinder of drying oven, preheated and dried at 135 DEG C.
Then, it is then passed by stalk particle that is dry and preheating and rotates pyrolysis oven into external-heat, likewise, the stove
Also the clip cavity formed with inner cylinder, outer barrel and the two, stalk particle enter inner cylinder, 75min are cracked at 480 DEG C, raw
At thermal cracking gas and biomass carbon.
The thermal cracking gas and biomass carbon of generation are detached by gas-solid separating device, and obtained biomass carbon is delivered to cooling
Biomass carbon product is obtained after system.Thermal cracking gas is obtained after the dust removal process of deduster, is washed into scrubbing tower,
Gas after washing enters combustion chambers burn, generates high-temperature flue gas.
Then, generated high-temperature flue gas is delivered into respectively in the clip cavity of rotation pyrolysis oven and dry thermal cracking stove, is
The drying of stalk particle and thermal cracking provide heat source.Flue gas enters in the inner cylinder of rotary drying stove simultaneously, completes to air
Displacement, while stalk particle is dried into generated vapor and is taken away, the flue gas come out by drying oven inner cylinder is conveyed into combustion chamber
As the combustion air of pyrolysis gas burning, and the flue gas come out by drying oven clip cavity and pyrolysis oven clip cavity enters waste heat boiler and carries out
The recycling again of heat, and it is discharged into air after purification reaches discharge standard, environmental pressure and environmental pollution will not be caused.
According to industrial design and actual production demand, the ratio of combustion product gases can be flexibly selected, when pyrolysis tolerance is more than needed
When, it a part of can be burnt by the pyrolysis gas of scrubbing tower out and generate flue gas, a part is used as the storage of clean biometric matter gas, separately makees him
With.
The Carbon yield for the biomass carbon that the present embodiment obtains is 34%, charcoal ash content 28%, organic carbon content 42%.
Comparative example
This comparative example provides a kind of method of stalk production biomass carbon, including,
Stalk particle is dried and is preheated under hot mode outside, then the stalk particle after drying and preheating exists
Thermal cracking is carried out under limited oxygen condition, obtains pyrolysis product.
Gas solid separation is carried out to obtained pyrolysis product, obtains pyrolysis gas and biomass carbon.
It after gained pyrolysis gas is dusted and is washed successively, burns, the generated flue gas that burns is delivered to stalk
The drying of particle and cracking step are used as heat source.
The Carbon yield for the biomass carbon that this comparative example obtains is 34%, charcoal ash content 27.5%, organic carbon content
41.5%.
This comparative example difference from Example 4 is, stalk particle is dried only with the mode of outer heat, not
Carry out contact of the flue gas with stalk particle.In pyrolysis, in order to build limit oxygen environment, need to carry out negative-pressure operation to pyrolysis installation
And a certain amount of nitrogen is supplemented to maintain limit oxygen environment therein.
The present invention is saving at least 10% energy compared with stalk in the prior art produces biomass carbon method
While cost consumption, moreover it is possible to ensure the better quality of biomass carbon, and the early period that can save industrial nitrogen-making device is fixed
Capital input (generally requires hundreds of thousands).
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
Variation is still in the protection scope of this invention.
Claims (12)
1. a kind of method of stalk production biomass carbon, which is characterized in that including,
(1) the dry, thermal cracking under limited oxygen condition by stalk particle, obtains pyrolysis product；
(2) gas solid separation is carried out to the pyrolysis product, obtains pyrolysis gas and biomass carbon；
(3) by the pyrolysis gas dedusting, washing after-combustion, the flue gas of generation, which is delivered in the step (1), is used as stalk particle
Dry and thermal cracking heat source；
When carrying out described dry, the flue gas is contacted with stalk particle, displaced air.
2. the method for stalk production biomass carbon according to claim 1, which is characterized in that the flue gas is first used as hot tearing
The heat source of solution stalk particle, after discharging heat, a part of heat source for being used as dry stalk particle, a part of stalk with drying
Particle contacts, displaced air.
3. the method for stalk production biomass carbon according to claim 1 or 2, which is characterized in that the stalk particle exists
There are tightly packed region after drying and before charing, to will dry stalk particle atmosphere and charing stalk particle atmosphere every
It opens.
4. the method for producing biomass carbon according to claim 1-3 any one of them stalks, which is characterized in that described and stalk
Flue gas after particle contact, is used as the combustion-supporting gas of pyrolysis gas burning.
5. the method for producing biomass carbon according to claim 1-4 any one of them stalks, which is characterized in that the drying
Temperature is 110~150 DEG C.
6. the method for producing biomass carbon according to claim 1-5 any one of them stalks, which is characterized in that the drying
Time is 60~90min.
7. the method for producing biomass carbon according to claim 1-6 any one of them stalks, which is characterized in that the thermal cracking
Temperature be 430~530 DEG C.
8. the method for producing biomass carbon according to claim 1-7 any one of them stalks, which is characterized in that the thermal cracking
Time be 60~90min.
9. the method for producing biomass carbon according to claim 1-8 any one of them stalks, which is characterized in that the step
(3) in, the obtained cleaning solution that washs obtains wood vinegar and wood tar by water-oil separating.
10. the method for producing biomass carbon according to claim 1-9 any one of them stalks, which is characterized in that with stalk
After flue gas, the flue gas as straw thermal cracking heat source and the flue gas as stalk drying source of grain contact complete heat release,
Heat recovery and further purification are also carried out, air is then discharged into.
11. the method for producing biomass carbon according to claim 1-10 any one of them stalks, which is characterized in that the drying
And/or the pyrolysis realizes that the external-heat revolving burner includes inner cylinder, outer barrel and two in external-heat revolving burner
The clip cavity that person is formed, the flue gas that the burning generates are passed through the clip cavity and realize heat release.
12. the method for stalk production biomass carbon according to claim 11, which is characterized in that the flue gas is passed through drying
With the inner cylinder of external-heat revolving burner, airflow direction is with stalk particle transporting direction on the contrary, to realize the displacement to air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810622236.7A CN108795455A (en) | 2018-06-15 | 2018-06-15 | A kind of method of stalk production biomass carbon |
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| CN201810622236.7A CN108795455A (en) | 2018-06-15 | 2018-06-15 | A kind of method of stalk production biomass carbon |
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| CN (1) | CN108795455A (en) |
Cited By (7)
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| CN109593537A (en) * | 2018-12-24 | 2019-04-09 | 北京洋航科贸有限公司 | A kind of movable type agricultural stalk total system and method |
| CN111440630A (en) * | 2020-05-12 | 2020-07-24 | 江西省蓝洁环保科技工程有限公司 | Agricultural biological straw pyrolysis gasification activation method |
| CN112094659A (en) * | 2019-06-02 | 2020-12-18 | 孔繁星 | Production method of nascent carbon |
| CN113184825A (en) * | 2021-01-21 | 2021-07-30 | 云南农业大学 | Device and method for cooperatively modifying phosphogypsum through edible fungus waste treatment |
| CN115678630A (en) * | 2022-09-28 | 2023-02-03 | 深圳萝卜鼠机器人科技有限公司哈尔滨分公司 | Method for making novel fuel block by using straws and wet cow dung as raw materials |
| CN116420830A (en) * | 2023-04-19 | 2023-07-14 | 江西金糠新材料科技有限公司 | A method and system for preparing food-grade rice husk vinegar, a rice husk vinegar beverage and its application |
| CN120329966A (en) * | 2025-06-20 | 2025-07-18 | 浙江润昇新能源有限公司 | A variable speed air flow type straw fluidization carbonization method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109593537A (en) * | 2018-12-24 | 2019-04-09 | 北京洋航科贸有限公司 | A kind of movable type agricultural stalk total system and method |
| CN112094659A (en) * | 2019-06-02 | 2020-12-18 | 孔繁星 | Production method of nascent carbon |
| CN111440630A (en) * | 2020-05-12 | 2020-07-24 | 江西省蓝洁环保科技工程有限公司 | Agricultural biological straw pyrolysis gasification activation method |
| CN113184825A (en) * | 2021-01-21 | 2021-07-30 | 云南农业大学 | Device and method for cooperatively modifying phosphogypsum through edible fungus waste treatment |
| CN115678630A (en) * | 2022-09-28 | 2023-02-03 | 深圳萝卜鼠机器人科技有限公司哈尔滨分公司 | Method for making novel fuel block by using straws and wet cow dung as raw materials |
| CN116420830A (en) * | 2023-04-19 | 2023-07-14 | 江西金糠新材料科技有限公司 | A method and system for preparing food-grade rice husk vinegar, a rice husk vinegar beverage and its application |
| CN120329966A (en) * | 2025-06-20 | 2025-07-18 | 浙江润昇新能源有限公司 | A variable speed air flow type straw fluidization carbonization method |
| CN120329966B (en) * | 2025-06-20 | 2025-08-26 | 浙江润昇新能源有限公司 | Variable-speed airflow type straw fluidization carbonization method |
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Application publication date: 20181113 |