CN108530113A - A kind of method of straw thermal cracking coproduction charcoal base manure - Google Patents
A kind of method of straw thermal cracking coproduction charcoal base manure Download PDFInfo
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- CN108530113A CN108530113A CN201810620385.XA CN201810620385A CN108530113A CN 108530113 A CN108530113 A CN 108530113A CN 201810620385 A CN201810620385 A CN 201810620385A CN 108530113 A CN108530113 A CN 108530113A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C1/00—Working-up tar
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C5/00—Production of pyroligneous acid distillation of wood, dry distillation of organic waste
-
- 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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Processing Of Solid Wastes (AREA)
- Fertilizers (AREA)
Abstract
The invention belongs to biomass utilization technologies fields, specifically provide a kind of production method of charcoal base manure.The method of straw thermal cracking coproduction charcoal base manure provided by the invention is used as dry and charing stalk particle heat source by will burn after pyrolysis gas of biomass purification separation, then by the high-temperature flue gas of generation.The part of smoke of generation is in contact with stalk particle when dry, the air around stalk particle can be replaced into the extremely low flue gas of oxygen content, stalk particle has been built and has carbonized initial limit oxygen environment, helped to improve charcoal, charcoal base manure quality；Meanwhile the replacement process of flue gas can also take away it is dry caused by vapor, in this way and reduce the energy consumption of follow-up carbonization system, avoid because vapor there are due to the adverse effect of follow-up system.
Description
Technical field
The invention belongs to biomass utilization technologies fields, specifically provide a kind of production method of charcoal base manure
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 utilizes
Rate is less than 20%.In fact, straw charring -- returning to the field technology is a kind of ideal straw utilization method, and straw charring refers to limiting
Make stalk be pyrolyzed to form stable rich carbon product under the conditions of oxygen and certain temperature, that is to say biomass carbon.Biomass carbon have compared with
Big porosity and specific surface area, stronger adsorption capacity, resistance to oxidation and antibiont capacity of decomposition, therefore can be widely applied to soil
Earth improvement increases soil fertility, as fertilizer slow-release formulation, carbon fixation and emission reduction etc..If stalk pyrolysis charring can large-scale development,
Stalk can also be done step-by-step from waste to the magnificent of recycling and turn round.
A kind of method of straw thermal cracking coproduction charcoal base manure fundamentally solves stalk large area and burns the resource wave brought
Take and environmental pollution problem, solves the problems, such as that stalk and agriculture and forestry organic waste material recycle, is that peasant brings practical interests, utilizes straw
Enterprise may be implemented sustainable health development, realize that the industrialization of straw resource multipath utilizes.
Charcoal base manure be one kind using biomass carbon as matrix, according to different zones land characteristics, Different Crop growth characteristic with
And the principle that applies fertilizers scientifically, add the ecological environment-friendly type fertilizer that organic matter or/and inanimate matter are formulated.It meets agricultural fertilizer and opens
The center of gravity of hair improves soil from simple raising crop yield to raising crop quality and utilization rate of fertilizer, realizes agricultural
The trend of production and the balanced growth of ecological environment.Biomass carbon is the primary raw material of charcoal base manure, because warm needed for straw charring
Degree is higher, so the production cost of charcoal base manure is concentrated mainly in a large amount of energy consumption, how to ensure to carbonize quality
While reduce to the consumption of the energy and reduce the research hotspot that thermal loss is always those skilled in the art, such as China is specially
Sharp document CN107541224A discloses a kind of biomass continuously carbonizing technique, and the technology is by will be produced by biomass cracking
Biogas body portion be used as rotary furnace fuel, realize charing fuel automatically supply.However, the technology subtracts the consumption of the energy
Rare limit, there are still considerable energy consumption and thermal loss in entire continuously carbonizing technique.
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 charcoal base manure 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 charcoal base manure cost, and then provide
A kind of heat utilization rate is high, energy consumption is few, thermal loss is low, the method for the stalk of low production cost production charcoal base manure.
The above-mentioned purpose of the present invention is achieved through the following technical solutions：
A kind of method of straw thermal cracking coproduction charcoal base manure, 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) pyrolysis gas is purified into after-combustion, generates flue gas；
(4) biomass carbon is used to produce charcoal base manure after crushing and cooling；
Wherein, the heat of the flue gas is dried as stalk particle in the step (1) heat source, stalk particle thermal cracking
Source, and/or, the flue gas is contacted with stalk particle, and stalk particle is made to be dried in the flue gas environment.
Heat source of the flue gas part as stalk particle thermal cracking in the step (1), a part are used as the step
Suddenly the heat source that stalk particle is dried in (1)；Or,
The heat source that the flue gas is first used as thermal cracking stalk particle remakes the heat source of dry stalk particle after discharging heat.
The flue gas contacts after cooling with stalk particle, and stalk particle is made to be dried in the flue gas environment.
The flue gas is first used as the heat source of thermal cracking stalk particle, after release heat cooling, then contacts with stalk particle, makes
Stalk particle is dried in the flue gas environment.
In the step (3), for the pyrolysis gas after dedusting, directly burning generates flue gas, or, the pyrolysis gas passes through
After washing, obtained fixed gas burning generates flue gas.
Cleaning solution is obtained after the pyrolysis gas is washed, wood vinegar and wood coke are obtained after cleaning solution is carried out water-oil separating
Oil, by wood vinegar spray in carrying out the cooling on the biomass carbon.
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 450~530 DEG C.
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, waste heat recovery and further purification are also carried out, air is then discharged into.
It further include the heat source that steam and drying are produced when partial fume is used as production charcoal base manure.
The charcoal base manure is charcoal base composite fertilizer, is mixed and is made with composite fertilizer material by the biomass carbon after crushing and cooling
It is made after grain.
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 counter current contacting.
Technical scheme of the present invention has the advantages that：
1. the method for straw thermal cracking coproduction charcoal base manure provided by the invention, by will be after pyrolysis gas of biomass purification separation
It burns, then the high-temperature flue gas of generation is used as dry and charing stalk particle heat source.By one of generation when dry
Divide flue gas to be in contact with stalk particle, the air around stalk particle can be replaced into flue gas, due to the oxygen content of the flue gas
It is extremely low, carbonizing initial limit oxygen environment to build stalk particle；Meanwhile the replacement process of flue gas can also take away drying
Generated vapor reduces the energy consumption of follow-up carbonization system again in this way, avoid because vapor there are due to follow-up system
Adverse effect.
In the prior art, Negative pressure often is carried out using to carbonizing apparatus, the operation of inflated with nitrogen displacement carbonizes to realize
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 straw thermal cracking coproduction charcoal base manure provided by the invention can effectively reduce energy consumption, drop
Loss low in calories.
2. the method for straw thermal cracking coproduction charcoal base manure provided by the invention is produced by further limiting pyrolysis gas burning
The heat source that raw high-temperature flue gas is first used as charing is further used as dry heat source, can further improve efficiency of utilization；Pass through
The combustion air that the flue gas after drying oven inner cylinder has been replaced air burns as pyrolysis gas is further limited, is utilized and displaces
Air in oxygen；By limiting time and the temperature of dry and thermal cracking, make biomass in middle low temperature, at a slow speed thermal cracking,
And ensure to carbonize quality；By being further processed and purifying to pyrolysis gas, can obtain wood vinegar, wood tar etc. by-products
Object, while reducing the generated dust that burns in combustion chamber.Pyrolysis gas dedusting can be adjusted according to industrial design and production needs
The amount directly burnt afterwards, and then adjust the amount of wood vinegar and wood tar.
If straw directly returning to field, microbes and the crop seedling of stover fight for nutrient, and soil is made to become too loose, hole
Gap size is uneven, and macrovoid is crossed and at most easily leads to race wind, pest and disease damage occurs, the present invention by stalk by being pyrolyzed coproduction life
Substance charcoal base manure, solves the above problems.And charcoal base composite fertilizer contributes to the slow release of nutrient, can increase soil sun from
Sub- exchange capacity, the leaching drip for reducing soil nutrient are lost in, increase soil fertility, reduce the dosage of chemical fertilizer.
3. the method for straw thermal cracking coproduction charcoal base manure provided by the invention, by preferably using external-heat revolving burner form
Drying oven and pyrolysis oven, can preferably highlight the advantage of method provided by the present invention；By by airflow direction and stalk
Grain transporting direction is set on the contrary, can more preferably realize the drying and preheating to stalk particle, and take away more vapor；Pass through
Flue gas to releasing heat in drying oven and retort carries out heat secondary recovery, can realize returning for tow taste heat
It receives and recycles, improve 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 of the method for the straw splitting coproduction charcoal base manure that embodiment 2 provides.
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 straw thermal cracking coproduction charcoal base manure is present embodiments provided, including,
Stalk particle is dried and is preheated under hot mode outside, then by the straw after drying and preheating in limit oxygen item
Thermal cracking is carried out under part, obtains pyrolysis product.
Gas solid separation is carried out to obtained pyrolysis product, obtains pyrolysis gas and biomass carbon.Gained biomass carbon is through crushing
With after cooling for producing charcoal base manure.
After the purified treatments such as being dusted, washing successively to gained pyrolysis gas, burn, burn caused by flue gas it is defeated
It send to the drying of stalk particle and cracking step, is 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 straw thermal cracking coproduction charcoal base manure 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
System crushes and is obtained after cooling down biomass carbon product.Thermal cracking gas is obtained after the dust removal process of deduster, is entered
Scrubbing tower is washed, and the mode of spray is selected to be washed in the present embodiment, and cleaning solution is sent into oil-water separation system, gained
Oil phase is wood tar, and gained water phase is wood vinegar, and gained wood vinegar is sent into cooling system and implements to spray to biomass carbon,
To realize the cooling of biomass carbon.The on-condensible gas come out by scrubbing tower passes through after the further gas-liquid separation of demister
Surge tank enters combustion chambers burn, generates high-temperature flue gas.
Then, generated high-temperature flue gas is first delivered into the clip cavity of rotation pyrolysis oven, as the heat source of pyrolysis, is released
Flue gas after thermal discharge, a part enter the clip cavity of rotary drying stove, and heat source is provided for the drying of stalk particle, another part into
Enter to rotarily dry the inner cavity of stove, on the one hand provide heat source for drying, on the other hand change the dry environment of traditional drying process,
Stalk particle is set to be dried in the environment of limiting oxygen.
Since in rotary drying stove and between rotating pyrolysis oven, there are one the tightly packed area of stalk particle, the regions for setting
It can be good at separating the atmosphere of drying oven and pyrolysis oven so that stalk particle maintains limited oxygen atmosphere and dry state to enter
Pyrolysis oven.The flue gas come out by drying oven inner cylinder is conveyed into the combustion air that combustion chamber is burnt as pyrolysis gas, and by drying oven
The flue gas that clip cavity comes out enters the recycling again that waste heat boiler carries out heat, and is purified, and reaching can after discharge standard
It is directly discharged into air, environmental pressure and environmental pollution will not be caused.
According to the demand of industrial design and actual production wood vinegar, it can directly be burnt and be sprayed net with flexible modulation pyrolysis gas
A part of high-temperature flue gas of the ratio of change, 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, realizes the purpose of dedusting.Number
According to display, in the gas of residual heat boiler for exchanging heat after-purification, PM10 is only 150 μ g/m3(average daily), PM2.5 are only 75 μ g/m3(day
), SO2Only 75 μ g/m3(average daily), NOxOnly 250 μ g/m3(average daily).
Embodiment 3
A kind of method of straw thermal cracking coproduction charcoal base manure 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 450 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.Gained biomass carbon product is granulated with composite fertilizer material and charcoal base composite fertilizer is made jointly.
To thermal cracking gas after the dust removal process of deduster, washed into scrubbing tower, the gas after washing by surge tank into
Enter combustion chambers burn, 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 the recycling again that waste heat boiler carries out heat, the heat of recycling can
Steam for producing charcoal base manure process produces and drying.Flue gas to having recycled heat purifies, after reaching discharge standard
It can be directly discharged into air, environmental pressure and environmental pollution will not be caused.
According to the demand of industrial design and actual production wood vinegar, it can directly be burnt and be sprayed net with flexible modulation pyrolysis gas
A part of high-temperature flue gas of the ratio of change, combustion chamber output can also be directly used in waste heat boiler.Purified biogas
The storage of clean biometric matter gas is can be used as, it is otherwise utilized.
Embodiment 4
A kind of method of straw thermal cracking coproduction charcoal base manure 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 there is inner cylinder, outer barrel and be sandwiched in clip cavity between the two, stalk particle enters inner cylinder, is cracked at 450 DEG C
90min generates thermal cracking gas and biomass carbon.
For the thermal cracking gas and biomass carbon of generation by gas-solid separation equipment, obtained biomass carbon is delivered to cooling system
After obtain biomass carbon product.Gained biomass carbon product and organic fertilizer raw material mixing granulation co-production charcoal base manure.Obtain heat
Cracking gas is washed after the dust removal process of deduster into scrubbing tower, and the gas after washing enters combustion chambers burn, production
Raw 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, can directly burn after biological pyrolysis gas dedusting, extra heat warp
Waste heat boiler recycling is crossed, is used to generate electricity or other civilian.
The Carbon yield for the biomass carbon that the present embodiment obtains is 31%, charcoal ash content 29.5%, organic carbon content 40%.
The biomass carbon obtained with the present embodiment prepares nitrogen base manure with composite fertilizer material and is applied to wheatland, and per mu yield improves
11.3%.
Comparative example 1
This comparative example provides a kind of method of straw thermal cracking coproduction charcoal base manure, 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.Gained biomass carbon is through crushing
With after cooling for producing charcoal base manure.
After the purified treatments such as being dusted, washing successively to gained pyrolysis gas, burn, burn caused by flue gas it is defeated
It send to the drying of stalk particle and cracking step, is used as heat source.
This comparative example difference from Example 1 is, is dried, has no to stalk particle only with the mode of outer heat
Flue gas is contacted with stalk particle.And 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 Carbon yield for the biomass carbon that this comparative example obtains is 31%, charcoal ash content 29.8%, organic carbon content 40%.
The biomass carbon composite fertilizer material same as Example 4 obtained by this comparative example prepares nitrogen base manure and is applied to wheatland,
Per mu yield improves 11%.
The present invention consumes compared with straw splitting technique in the prior art in the energy cost for saving at least 10%
Meanwhile while ensure that the fertilizer efficiency of obtained charcoal base manure, and fixed assets early period that can save industrial nitrogen-making device are thrown
Enter and (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 (14)
1. a kind of method of straw thermal cracking coproduction charcoal base manure, 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) pyrolysis gas is purified into after-combustion, generates flue gas；
(4) biomass carbon is used to produce charcoal base manure after crushing and cooling；
Wherein, the heat source of the flue gas is dried as stalk particle in the step (1) heat source, stalk particle thermal cracking, and/
Or, the flue gas is contacted with stalk particle, stalk particle is made to be dried in the flue gas environment.
2. the method for straw thermal cracking coproduction charcoal base manure according to claim 1, which is characterized in that
Heat source of the flue gas part as stalk particle thermal cracking in the step (1), a part is as the step (1)
The heat source of middle stalk particle drying；Or,
The heat source that the flue gas is first used as thermal cracking stalk particle remakes the heat source of dry stalk particle after discharging heat.
3. the method for straw thermal cracking coproduction charcoal base manure according to claim 1 or 2, which is characterized in that
The flue gas contacts after cooling with stalk particle, and stalk particle is made to be dried in the flue gas environment.
4. the method for straw thermal cracking coproduction charcoal base manure according to claim 3, which is characterized in that
The flue gas is first used as the heat source of thermal cracking stalk particle, after release heat cooling, then contacts with stalk particle, makes stalk
Particle is dried in the flue gas environment.
5. according to the method for claim 1-4 any one of them straw thermal cracking coproduction charcoal base manure, which is characterized in that described
In step (3), after dedusting, directly burning generates flue gas and is obtained or, after the pyrolysis gas is washed the pyrolysis gas
Fixed gas burning generates flue gas.
6. the method for straw thermal cracking coproduction charcoal base manure according to claim 5, which is characterized in that
Cleaning solution is obtained after the pyrolysis gas is washed, wood vinegar and wood tar are obtained after cleaning solution is carried out water-oil separating, it will
Wood vinegar spray is in carrying out the cooling on the biomass carbon.
7. according to the method for claim 1-6 any one of them straw thermal cracking coproduction charcoal base manure, which is characterized in that described dry
Dry temperature is 110~150 DEG C.
8. according to the method for claim 1-7 any one of them straw thermal cracking coproduction charcoal base manure, which is characterized in that described dry
The dry time is 60~90min.
9. according to the method for claim 1-8 any one of them straw thermal cracking coproduction charcoal base manure, which is characterized in that the heat
The temperature of cracking is 450~530 DEG C.
10. according to the method for claim 1-9 any one of them straw thermal cracking coproduction charcoal base manure, which is characterized in that with straw
Flue gas, the flue gas as straw thermal cracking heat source and the flue gas as stalk drying source of stalk particle contact complete heat release
Afterwards, waste heat recovery and further purification are also carried out, air is then discharged into.
11. according to the method for claim 1-10 any one of them straw thermal cracking coproduction charcoal base manure, which is characterized in that also wrap
Include the heat source of production steam and drying when being used as producing charcoal base manure by partial fume.
12. according to the method for claim 1-11 any one of them straw thermal cracking coproduction charcoal base manure, which is characterized in that described
Charcoal base manure is charcoal base composite fertilizer, is made with after composite fertilizer material mixing granulation by the biomass carbon after crushing and cooling.
13. according to the method for claim 1-12 any one of them straw thermal cracking coproduction charcoal base manure, which is characterized in that described
It is dry and/or it is described pyrolysis realized in external-heat revolving burner, the external-heat revolving burner include inner cylinder, outer barrel with
And the clip cavity that the two is formed, the flue gas that the burning generates are passed through the clip cavity and realize heat release.
14. the method for straw thermal cracking coproduction charcoal base manure according to claim 13, which is characterized in that the flue gas is passed through
The dry inner cylinder with external-heat revolving burner, airflow direction and stalk particle counter current contacting.
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| CN109821870A (en) * | 2019-03-26 | 2019-05-31 | 安徽理工大学 | A kind of devices and methods therefor preparing straw biological charcoal using high temperature thermal desorption waste heat |
| CN110028979A (en) * | 2019-03-18 | 2019-07-19 | 吴植仁 | A kind of rotary retort of biomass producing or not wood vinegar less |
| CN110235651A (en) * | 2019-06-03 | 2019-09-17 | 北京三聚绿能科技有限公司 | A kind of straw biomass seedling-cultivation plate and preparation method thereof |
| WO2020146916A1 (en) * | 2019-01-16 | 2020-07-23 | Zoechbauer August Hermann | Apparatus and process for producing coal from fuel |
| CN112251267A (en) * | 2019-07-22 | 2021-01-22 | 肇东市圣通秸秆碳化有限公司 | Manufacturing equipment and process of straw carbon powder |
| WO2021035464A1 (en) * | 2019-08-26 | 2021-03-04 | 湖南诺亚农业科技发展有限公司 | System and method for preparing carbon-based compound microbial fertiliser |
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| WO2021035464A1 (en) * | 2019-08-26 | 2021-03-04 | 湖南诺亚农业科技发展有限公司 | System and method for preparing carbon-based compound microbial fertiliser |
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