CN106318418A - Method for preparing biomass charcoal fuel from corn stalks through low-temperature carbonization - Google Patents
Method for preparing biomass charcoal fuel from corn stalks through low-temperature carbonization Download PDFInfo
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- CN106318418A CN106318418A CN201610849344.9A CN201610849344A CN106318418A CN 106318418 A CN106318418 A CN 106318418A CN 201610849344 A CN201610849344 A CN 201610849344A CN 106318418 A CN106318418 A CN 106318418A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
- C10B49/02—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge
- C10B49/04—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated
- C10B49/06—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated according to the moving bed type
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/14—Features of low-temperature carbonising processes
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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
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- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention relates to a method for preparing biomass charcoal fuel from corn stalks through low-temperature carbonization, and belongs to the technical field of biomass pyrolysis. The method comprises the following steps that after nitrogen gas is introduced into a carbonization furnace, oxygen-free or low-oxygen environment is formed in the furnace; corn stalk raw material particles are fed from the top of the carbonization furnace; a hot air flow enters the carbonization furnace from the bottom of the carbonization furnace to form a reverse flow reaction region in the furnace; the reaction temperature at the bottom of the carbonization furnace is controlled to be 200 to 280 DEG C; the pressure inside the furnace is 1010 to 1200 mbar; the biomass charcoal fuel generated through reaction is output from the bottom of the carbonization furnace. The method for preparing biomass charcoal fuel from corn stalks through low-temperature carbonization has the advantages that the heat utilization efficiency is high; the carbonization temperature is low; the energy consumption is reduced; the mass yield of the biomass charcoal fuel obtained after the carbonization is 70 percent to 85 percent; the energy source yield is 85 percent to 95 percent; the energy source yield is high; the energy density of the obtained biomass charcoal is high; the biomass charcoal can be used as the fuel; the product purpose is expanded; a novel path is provided for the recovery and the utilization of the corn stalks.
Description
Technical field
The invention belongs to biomass pyrolytic technical field, be specifically related to a kind of corn straw low-temperature carbonization and prepare biomass carbon
The method of fuel.
Background technology
China is straw output big country, and the bottleneck of agricultural development is always perplexed in the pollution problem of agricultural crop straw.According to
Biomass path for transformation, current biomass energy utilizes technology to include physical transformations, bioconversion and chemical conversion.Physics turns
Change predominantly physical compression, briquetting to process, prepare biomass solid formed fuel；Bioconversion is mainly anaerobic digestion producing methane
And fermentative production of ethanol；Chemical conversion includes liquefaction, gasification, carbonization etc., is the emphasis of research the most both at home and abroad, is concentrated mainly on
Research in terms of biomass liquefying and gasification, less and current for the biomass carbonated research preparing biomass carbon fuel
Biomass pyrolytic carbonization technology typically uses batch technology to carry out under middle temperature (400 DEG C～700 DEG C) or high temperature (>=700 DEG C),
Cost is high, mostly rest on the laboratory research stage.
Biomass pyrolytic refer to biomass under conditions of anaerobic or hypoxia, by thermal chemical reaction by biomass macromole
Material (lignin, cellulose and hemicellulose) resolves into the fuel material (solid-state charcoal, combustible gas, bio oil) of less molecule
Thermochemical study technical method.
In prior art, CN102703099A discloses one and vertically moves bed rice husk carbonization furnace and a carbonization rice husk side thereof
Method, carbide furnace includes particle system, gas burning system, operation gas system and control system, and particle system forms hanging down of rice husk whereabouts
Translation movable bed, operation gas system be produce operation gas work portion, rice husk in vertically moving bed with operation gas generation refluent heat
Exchange.The method of its carbonization rice husk includes: S1. charging is bought securities with all one's capital to upper feed bin；S2. combustion gas blower fan and recirculated cooling water are started
Pump；S3. the start-up burner igniting of combustor, opening control system simultaneously；S4. adjust: the target ginseng of residual oxygen concentration sensor
Number cannot be less than 1%, and the target component of operation temperature sensor is 675～685 DEG C, the target of furnace exit temperature sensor
Parameter is 96～100 DEG C, and the target component of furnace outlet pressure transducer is-50～-30Pa, the target of dump temperature sensor
Parameter is less than 400 DEG C；S5., when the target component of furnace exit temperature sensor reaches 96～100 DEG C, secondary combustion gas is progressively put into
Blower fan, pressure fan, and gradually reduce start-up burner load to zero, utilize rice husk level sensor, progressively strengthen load and arrive
Rated load；The most normally produce；S7. shutting down: feed disables rice husk and uses other little particulate inert material instead, lower flapper regulates
To peak load；Close secondary combustion gas blower fan, pressure fan, deactivation control system successively；Combustion gas blower fan is preferably minimized load；Until rice
Shell goes out clean rear blowing out.
The method of above-mentioned carbonization rice husk achieves the temperature control continuous carbonization of rice husk on a manufacturing scale, and product is active carbide
Rice husk, lightweight wood tar and fuel gas.But, its carburizing temperature is too high, and products obtained therefrom is active carbon material, energy density
Low, it is impossible to use as fuel, energy yield is low.
Summary of the invention
It is an object of the invention to provide a kind of method that corn straw low-temperature carbonization prepares biomass carbon fuel, gained is biological
Matter charcoal energy density is high, can use as fuel, and energy yield is high.
In order to realize object above, the technical solution adopted in the present invention is:
A kind of method that corn straw low-temperature carbonization prepares biomass carbon fuel, makes stove including being passed through nitrogen in retort
In be anaerobic or low-oxygen environment after, corn stalk raw material granule is entered bottom retort from retort its top feed, thermal current
Enter, in stove, form countercurrent reaction region；Controlling the reaction temperature bottom retort is 200～280 DEG C, and furnace pressure is 1010
～1200mbar, reaction generates biomass carbon fuel and exports bottom retort.
Described low-oxygen environment refers to that oxygen volumn concentration is less than 10%.
The fuel gas produced in stove is discharged from retort top.After the condensed process of described fuel gas, burning produces
Thermal current is as the thermal source of retort.
After described fuel gas removing dust successively, condensation, purified treatment, burning produces the thermal current heat as retort
Source, it is achieved that recycling of energy.Dedusting described herein is to use cyclone dust extractor to carry out dedusting, removes fuel gas and carries
Carbon granule and the solid impurity such as dust, reduce the content of solid impurity in the gas entering condenser, not only avoid condensation
The phenomenon of device internal incrustation, decreases the content of solid impurity in condensed fluid, improves the quality of condensable product；Meanwhile, warp
When crossing the gas fuel burning of dedusting, it is to avoid gas combustion is uneven, efficiency of combustion is the highest, the even phenomenon of detonation, make into
The hot stream temperature entering retort is controlled, improves the stability that system is run.
Described condensation is to use cooling water to condense, and before condensation, the temperature of gas is 51～60 DEG C, gas after condensation
Temperature is 40～50 DEG C.Condensation products therefrom main component is vinegar liquid.
Described purification is to use adsorber to carry out adsorption cleaning, removes that condenser is the most treatable, is carried out by air-flow
Droplet, is further purified fuel gas, improves efficiency and the uniformity of subsequent combustion, improves further and enter charcoal
Change controllability and the stability of system operation of the hot stream temperature of stove.
It is passed through combustion-supporting gas or by the way of burning zone rear portion is passed through nitrogen by auxiliary heating system or when burning
Control the temperature of thermal current, thus control the pyrolysis reaction temperature bottom retort.Described combustion-supporting gas is air.
Described auxiliary heating system is electrical heating or is passed through combustion of natural gas heating.The addition of air is based on pyrolysis gas
Flow signal automatically control, with ensure burning be normally carried out.For controlling combustion gas Outlet Gas Temperature (hot stream temperature),
According to temperature signal, auxiliary heating when temperature is low, add the nitrogen of certain flow during temperature height, to ensure to enter the heat of retort
Gas flow temperature is stable.
Described corn stalk raw material granule is prepared by following methods: corn stalk powder is broken to particle diameter < 3mm, by
It is compressing that to particle diameter, < 15mm to obtain final product.The bulk density 0.25～0.40g/cm of gained corn stalk raw material granule3。
The moisture content < 20% of described corn stalk raw material granule.
In the method, the material time of staying in retort is 1～6h.
The method that the corn straw low-temperature carbonization of the present invention prepares biomass carbon fuel, with N2Make carrier gas, start to be passed through N2Protect
It is anaerobic or low-oxygen environment in card retort, then corn stalk raw material granule is delivered in retort；Initially utilize auxiliary
The thermal current that heating system produces provides heat as initial thermal source for pyrolysis charring reaction；Corn stalk raw material granule relies on certainly
Weight drops to bottom from retort top, and thermal current rises to top bottom retort, and both directly contact, in vertical direction
Upper adverse current moves and is formed sustained response region.Controlling the pyrolysis reaction temperature bottom retort is 200～280 DEG C, and stove is intrinsic pressure
Power is 1010～1200mbar (absolute pressures), maintains thermograde in retort, and temperature gradually rises from top to bottom, makes straw exist
From top to bottom motor process realizes successively in stove being dried, pre-pyrolysis, pyrolysis and carbonization stage, thus generate biomass at furnace bottom
Charcoal fuel, exports from furnace bottom, it is achieved the preparation of biomass carbon fuel；In the method, feed particles directly contacts with thermal current, heat
Utilization ratio is high；Carbonization temperature is low, it is to avoid the generation of tar；Gained biomass carbon quality of fuel yield 70%～85%,
Energy yield 85%～95%, energy yield is high；Gained biomass carbon energy density is high, can use as fuel, expand product
The purposes of product, the recycling for corn straw provides new approach.
In the method, corn stalk raw material granule enters retort with certain speed, moves from retort top and drops to
During Di Bu, first dry out and be dried, feed particles continuous decrease, gradually pass through the higher region of temperature, now biological
Matter generation pyrolytic reaction, discharges CO, CO2And the gas such as light component Organic substance, be pyrolyzed the biomass carbon fuel that obtains with
Certain charcoal speed that goes out exports continuously at furnace bottom, it is achieved that the continuous production of biomass carbon fuel.
Further, the fuel gas produced in pyrolytic process, discharge from retort top, successively removing dust, condensation, clean
After change, produce thermal current by burning and enter retort as thermal source；Utilize the fuel gas produced in carbonization process as heat
Solve heat source, it is achieved that recycling of energy, save the energy, and the continuous production of retort can be maintained.
The method that the corn straw low-temperature carbonization of the present invention prepares biomass carbon fuel, with corn straw as raw material, utilizes
Discarded corn stover is biomass carbon fuel by low-temperature carbonization technology, and achieves scale and produce continuously；Low-temperature carbonization
Technology is effectively reduced energy consumption, improves the yield of biomass carbon fuel, it is to avoid the generation of tar (subsequent condensation liquid
Body be mainly composed of vinegar liquid)；Seriality charring process, can realize industrialized production；Fuel gas recycles, and energy is from following
Ring, effectively reduces energy consumption；Gained biomass carbon fuel is effectively reduced the consumption of primary energy, alleviates the current energy tight
The situation opened, opens new way for the comprehensive utilization of straw and the exploitation of new forms of energy, has good economic benefit and environment
Benefit, is suitable for promoting the use of.
Accompanying drawing explanation
Fig. 1 is the structural representation of the biomass continuous pyrolysis carbonizing apparatus used by detailed description of the invention.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further illustrated.
In detailed description of the invention, biomass continuous pyrolysis carbonizing apparatus used is as it is shown in figure 1, include moving bed pyrolysis system
System, feed system, discharge system and gas recirculating system, described moving bed pyrolysis system includes moving bed pyrolysis retort 1, institute
The top stating moving bed pyrolysis retort 1 is provided with charging aperture 1-3, bottom is provided with discharging opening 1-4；Described feed system includes raw material
Storehouse 6, the discharge gate of described raw material cabin 6 passes through the first pipeline and the charging aperture 1-3 phase being arranged on moving bed pyrolysis retort 1 top
Connect, described first pipeline is additionally provided with conveying worm, for the raw material of raw material cabin 6 is sent into moving bed pyrolysis retort 1；
Described discharge system includes finished product storage tank 7, and the import of described finished product storage tank 7 is passed through the second pipeline and is arranged on moving bed pyrolysis charcoal
Change the discharging opening 1-4 bottom stove 1 to be connected；It is additionally provided with the conveying worm with cooling system on described second pipeline.
This biomass continuous pyrolysis carbonizing apparatus is an airtight interior circulating reaction system, and described first pipeline is near entering
Being provided with valve group 8 at material mouth 1-3, valve group 8 includes 2 automatic valves 8-1, the 8-2 set gradually, and the second pipeline is near discharging
Being provided with valve group 9 at mouth 1-4, valve group 9 includes 2 automatic valves 9-1, the 9-2 set gradually, by the friendship of upper and lower valve
Stagger close realize run time equipment airtight；Described moving bed pyrolysis retort 1 is internal is additionally provided with material bed material level detector (material
Position laser probe, is not drawn in figure), it is used for detecting material layered material position and feeding back to PLC automation control system, by PLC certainly
Dynamic networked control systems controls charging aperture, the automatic valve group 8,9 of discharge outlet realizes automatic feed and/or self-emptying.
Described gas recirculating system includes cyclone dust extractor 2, condenser 3, adsorber 4 and is heated at reflux device 5, described whirlwind
The gas feed 2-1 of cleaner unit 2 is connected with the pyrolysis gas outlet 1-2 of moving bed pyrolysis retort 1, the gas of cyclone dust extractor 2
Body outlet 2-2 is connected with the gas feed 3-1 of described condenser 3, and the bottom of cyclone dust extractor 2 is additionally provided with for discharging collection
The dust outlet 2-3 of dust；The gas outlet 3-2 of condenser 3 is connected with the gas feed 4-1 of adsorber 4, condenser 3
Bottom is additionally provided with the leakage fluid dram 3-3 for discharging condensed fluid；The gas outlet 4-2 of adsorber 4 passes through the 3rd pipeline and backflow
Fuel gas inlet 5-1 of heater 5 is connected, and the bottom of described adsorber 4 is additionally provided with the leakage fluid dram 4-for discharging adsorbent
3, described 3rd pipeline is additionally provided with the circulating pump for combustion gas circulation；It is heated at reflux the thermal current outlet 5-2 of device 5 by the 4th
Pipeline is connected with the thermal current import 1-1 of moving bed pyrolysis retort 1, and described 4th pipeline is additionally provided with electric T-shaped valve
10, this electric T-shaped valve 10 connects the exhaust emission pipeline for emission.
Described being heated at reflux on device 5 is additionally provided with supplementary fuel inlet 5-5 (auxiliary heating system), combustion-supporting gas import 5-3
With nitrogen inlet 5-4, connect natural gas line, air line and nitrogen pipeline respectively, described natural gas line, air line and
Electrically operated valve 13,11,12 it is respectively equipped with, for being heated at reflux device confession natural gas and/or air and/or nitrogen on nitrogen pipeline
Gas.
This biomass continuous pyrolysis carbonizing apparatus, according to the material bed material level detector within moving bed pyrolysis retort 1
Detectable signal, once detection material position is not enough, starts conveying worm and automatic valve group 8 by PLC automation control system, former
Material particle quantitative enters between two valves, then according to time interlock, closes upper valve, opens bottom valve, automatically
Charging；Pyrolysis completes, and starts automatic valve group 9, and product quantitatively enters between two valves, then according to time interlock, closes
Close upper valve, open bottom valve, self-emptying.Automatic feed and self-emptying is controlled by PLC automation control system
Realize the seriality that equipment runs.
In this biomass continuous pyrolysis carbonizing apparatus, it is heated at reflux device 5 and is provided with combustion-supporting gas import 5-3, nitrogen inlet
5-4 and supplementary fuel inlet 5-5 (auxiliary heating system), import all uses tangential admission, the addition of combustion-supporting gas (air)
The flow signal being based on pyrolysis gas automatically controls, to ensure being normally carried out of burning.The reaction temperature of moving bed pyrolysis retort 1
Degree is based on temperature signal, adds the nitrogen of certain flow or supplementary fuel, to ensure charcoal being heated at reflux device 5 burning zone rear portion
Change the temperature stabilization of stove.
The pressure of this biomass continuous pyrolysis carbonizing apparatus is automatically controlled by PLC automation control system, in order to maintain stove
Stablizing of body pressure, discharges part of smoke.
In detailed description of the invention, corn stalk raw material granule used is prepared by following methods: by corn stalk powder
Be broken to particle diameter < 3mm, by compressing to particle diameter < 15mm, to obtain final product, the bulk density 0.25 of gained corn stalk raw material granule～
0.40g/cm3.The moisture content < 20% of described corn stalk raw material granule.
In detailed description of the invention, the purity of nitrogen used is not less than 99%.
Embodiment 1
The method that the corn straw low-temperature carbonization of the present embodiment prepares biomass carbon fuel, uses above-mentioned biomass continuous
Pyrolysis charring device, particularly as follows:
Being passed through in retort in nitrogen makes stove is anaerobic or low-oxygen environment (oxygen volumn concentration is less than 10%), will
Corn stalk raw material granule, from retort its top feed, relies on himself gravity to flow automatically downwards；Thermal current enters bottom retort
Enter, rise to top from bottom, in stove, form countercurrent reaction region；The reaction temperature bottom retort is controlled by thermal current
Being 220 DEG C, furnace pressure is 1050mbar, and the material time of staying in stove is 5h, and reaction generates biomass carbon fuel from charcoal
Changing furnace bottom output, the fuel gas produced in stove is discharged from the pyrolysis gas outlet of retort.
Maintain thermograde in retort, temperature gradually rises from top to bottom, makes straw move from top to bottom in stove
During realize successively being dried, pre-pyrolysis, pyrolysis and carbonization stage, thus generate biomass carbon fuel at furnace bottom, defeated from furnace bottom
Go out, it is achieved the preparation of biomass carbon fuel.
Initial thermal current is produced by auxiliary heating system, and described auxiliary heating system is for being passed through sky to being heated at reflux in device
So gas (supplementing fuel) burning；In follow-up stove after the fuel gas removing dust successively of generation, condensation, purified treatment, add in backflow
The burning of hot device produces the thermal current thermal source as retort；By auxiliary heating system or to be passed through combustion-supporting gas when burning (empty
Gas) or it is passed through nitrogen at burning zone rear portion, to control the pyrolysis reaction temperature bottom retort.
Described condensation is to use cooling water to condense, and before condensation, the temperature of gas is 51～60 DEG C, gas after condensation
Temperature is 40～50 DEG C.Condensation products therefrom main component is vinegar liquid.
The technical parameter that the corn straw low-temperature carbonization of embodiment 2-5 prepares the method for biomass carbon fuel is as shown in table 1,
Remaining is with embodiment 1.
The corn straw low-temperature carbonization of table 1 embodiment 2-5 prepares the technical parameter table of the method for biomass carbon fuel
| Embodiment | Reaction temperature (DEG C) | Furnace pressure (absolute pressure, mbar) | Residence time of material (h) |
| 2 | 240 | 1100 | 4 |
| 3 | 250 | 1150 | 3 |
| 4 | 270 | 1200 | 1 |
| 5 | 200 | 1010 | 6 |
Experimental example 1
The corn straw low-temperature carbonization of embodiment 1-5 is prepared the method gained biomass of biomass carbon fuel by this experimental example
Charcoal fuel is added up and is detected.
Detection method and instrument are as follows:
Thermogravimetric and combustion characteristic analysis: use the STA449F3 synchronous solving of NETZSCH instrument company of Germany
(Thermogravimetric Analyzer)。
Heating-value determination: use calorimeter (Zhengzhou Heng Ya instrument and meter company limited, HY-A9) and electronic balance (Shenzhen
Endless weighing apparatus company limited, MAX-A6002).
Quality yield and energy yield: quality yield ηmWith energy conversion rate ηeComputing formula as follows,
In formula: m1And Q1Represent raw materials quality and low heat valve, m2And Q2Represent that biomass carbon fuel mass and low level are sent out
Heat.
Result is as shown in table 2.Wherein, described raw material is corn stalk raw material granule.
The testing result of table 2 embodiment 1-5 gained biomass carbon fuel
| Object | Reaction temperature (DEG C) | Empty butt Lower heat value (MJ/kg) | Quality yield (%) | Energy yield (%) |
| Raw material | - | 15.24 | - | - |
| Embodiment 1 | 220 | 17.73 | 79.8 | 92.84 |
| Embodiment 2 | 240 | 18.08 | 77.7 | 92.18 |
| Embodiment 3 | 250 | 18.15 | 75.7 | 90.15 |
| Embodiment 4 | 270 | 18.23 | 71.2 | 85.17 |
| Embodiment 5 | 200 | 17.11 | 82.9 | 93.07 |
From table 2 it can be seen that compared with corn stalk raw material granule, gained biomass carbon fuel of the present invention has higher
Empty butt Lower heat value；Feed particles is in low temperature pyrogenation carbonization process, and the pyrolysis gas of generation has taken away the energy of a part, but
It is the biomass carbon fuel generated or the most of energy saving corn stalk raw material, there is higher quality yield and energy
Source yield.
The present invention, for the purpose of obtaining solid fuel charcoal, compares " Coal Quality classification third portion: caloric value " (GB/
T15224.3-2010), gained biomass carbon fuel of the present invention is equivalent to middle lower calorific value coal." biomass solid forming fires in comparison
Material technical conditions " (NY/T 1878-2010), the caloric value of gained biomass carbon fuel of the present invention is than draft biolobic material solid
The caloric value of shaped fuel is high, and time 240 DEG C (embodiment 2), the calorific value of biomass carbon fuel fires than draft biolobic material solid forming
Material standard height 4.68MJ/kg.
Experimental example 2
The combustibility of embodiment gained biomass carbon fuel is detected by this experimental example.
Detection method and instrument are as follows:
Thermogravimetric and combustion characteristic analysis: use the STA449F3 synchronous solving of NETZSCH instrument company of Germany
(Thermogravimetric Analyzer)。
Industrial Analysis: use Muffle furnace (Shanghai Kai Lang instrument and equipment factory, SX2-4-10) and drying baker (the prosperous baking in Fujian, Wujiang
Case electric furnace Manufacturing Co., Ltd, MX841-6).
Elementary analysis: use Elementar company of Germany, vario EL type III elemental analyser.
Result is as shown in table 3.
The combustibility testing result of table 3 embodiment gained biomass carbon fuel
From table 3 it can be seen that the ignition temperature of embodiment gained biomass carbon fuel is less than Linesless charcoal (487.2 DEG C) and barbecue
Charcoal (361.7 DEG C), more easy firing, integrated combustion property index, higher than Linesless charcoal (1.461), less than charcoal for roasting (3.405), has excellent
Different combustibility.
Claims (9)
1. the method that a corn straw low-temperature carbonization prepares biomass carbon fuel, it is characterised in that: include in retort logical
Entering in nitrogen makes stove after being anaerobic or low-oxygen environment, by corn stalk raw material granule from retort its top feed, thermal current is from charcoal
Change furnace bottom to enter, in stove, form countercurrent reaction region；Controlling the reaction temperature bottom retort is 200～280 DEG C, in stove
Pressure is 1010～1200mbar, and reaction generates biomass carbon fuel and exports bottom retort.
The method that corn straw low-temperature carbonization the most according to claim 1 prepares biomass carbon fuel, it is characterised in that: stove
The fuel gas of interior generation is discharged from retort top；After the condensed process of described fuel gas, burning produces thermal current conduct
The thermal source of retort.
The method that corn straw low-temperature carbonization the most according to claim 2 prepares biomass carbon fuel, it is characterised in that: institute
After stating fuel gas removing dust successively, condensation, purified treatment, burning produces the thermal current thermal source as retort.
4. the method preparing biomass carbon fuel according to the corn straw low-temperature carbonization described in Claims 2 or 3, its feature exists
In: described condensation is to use cooling water to condense, and before condensation, the temperature of gas is 51～60 DEG C, and after condensation, the temperature of gas is
40～50 DEG C.
5. the method preparing biomass carbon fuel according to the corn straw low-temperature carbonization described in Claims 2 or 3, its feature exists
In: it is passed through combustion-supporting gas by auxiliary heating system or when burning or controls heat by the way of burning zone rear portion is passed through nitrogen
The temperature of air-flow, thus control the pyrolysis reaction temperature bottom retort.
The method that corn straw low-temperature carbonization the most according to claim 5 prepares biomass carbon fuel, it is characterised in that: institute
State auxiliary heating system to be electrical heating or be passed through combustion of natural gas heating.
The method that corn straw low-temperature carbonization the most according to claim 1 prepares biomass carbon fuel, it is characterised in that: institute
State corn stalk raw material granule to be prepared by following methods: corn stalk powder is broken to particle diameter < 3mm, by compressing extremely
< 15mm to obtain final product particle diameter.
The method that corn straw low-temperature carbonization the most according to claim 7 prepares biomass carbon fuel, it is characterised in that: institute
State the moisture content < 20% of corn stalk raw material granule.
The method that corn straw low-temperature carbonization the most according to claim 1 prepares biomass carbon fuel, it is characterised in that: thing
The material time of staying in retort is 1～6h.
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| CN201610849344.9A CN106318418B (en) | 2016-09-23 | 2016-09-23 | A kind of method that corn stover low-temperature carbonization prepares biomass carbon fuel |
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|---|---|---|---|
| CN201610849344.9A CN106318418B (en) | 2016-09-23 | 2016-09-23 | A kind of method that corn stover low-temperature carbonization prepares biomass carbon fuel |
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| CN106318418B CN106318418B (en) | 2019-03-15 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108003902A (en) * | 2017-10-24 | 2018-05-08 | 新冶高科技集团有限公司 | A kind of biomass fast pyrogenation system and method for pyrolysis |
| CN108530113A (en) * | 2018-06-15 | 2018-09-14 | 北京三聚绿能科技有限公司 | A kind of method of straw thermal cracking coproduction charcoal base manure |
| CN108611110A (en) * | 2018-05-21 | 2018-10-02 | 吉林省电力科学研究院有限公司 | Couple the biomass carbon production system of coal-burning boiler |
| CN108822881A (en) * | 2018-06-08 | 2018-11-16 | 国宏中晶（北京）科技发展有限公司 | A kind of tire pyrolysis device and method of temperature control stage by stage |
| CN108841403A (en) * | 2018-05-23 | 2018-11-20 | 安徽省司尔特肥业股份有限公司 | A kind of biomass carbonizing furnace |
| CN108977250A (en) * | 2018-08-31 | 2018-12-11 | 南京林业大学 | A kind of waste tire of automobile and agricultural stalk fuel combination processing unit and method |
| CN110240913A (en) * | 2019-06-03 | 2019-09-17 | 西双版纳森田新能源科技开发有限公司 | A kind of crop straw carbonizing furnace and its carbonizing method |
| CN111892967A (en) * | 2020-07-06 | 2020-11-06 | 河南煜见煜辉生态科技有限公司 | Equipment for producing biological coal by crop straws and preparation process thereof |
| CN112094659A (en) * | 2019-06-02 | 2020-12-18 | 孔繁星 | Production method of nascent carbon |
| CN114517099A (en) * | 2022-02-25 | 2022-05-20 | 北京丰润铭科贸有限责任公司 | Method for producing biomass coal by carbonizing biomass |
| CN115197730A (en) * | 2022-08-17 | 2022-10-18 | 逊克县聚鑫生物质新材料有限公司 | Preparation device and method of modified biomass charcoal based on low-temperature cracking |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108003902A (en) * | 2017-10-24 | 2018-05-08 | 新冶高科技集团有限公司 | A kind of biomass fast pyrogenation system and method for pyrolysis |
| CN108611110B (en) * | 2018-05-21 | 2023-12-12 | 吉林省电力科学研究院有限公司 | Biomass charcoal production system of coupling coal-fired boiler |
| CN108611110A (en) * | 2018-05-21 | 2018-10-02 | 吉林省电力科学研究院有限公司 | Couple the biomass carbon production system of coal-burning boiler |
| CN108841403A (en) * | 2018-05-23 | 2018-11-20 | 安徽省司尔特肥业股份有限公司 | A kind of biomass carbonizing furnace |
| CN108822881A (en) * | 2018-06-08 | 2018-11-16 | 国宏中晶（北京）科技发展有限公司 | A kind of tire pyrolysis device and method of temperature control stage by stage |
| CN108530113A (en) * | 2018-06-15 | 2018-09-14 | 北京三聚绿能科技有限公司 | A kind of method of straw thermal cracking coproduction charcoal base manure |
| CN108977250A (en) * | 2018-08-31 | 2018-12-11 | 南京林业大学 | A kind of waste tire of automobile and agricultural stalk fuel combination processing unit and method |
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| CN112094659A (en) * | 2019-06-02 | 2020-12-18 | 孔繁星 | Production method of nascent carbon |
| CN110240913A (en) * | 2019-06-03 | 2019-09-17 | 西双版纳森田新能源科技开发有限公司 | A kind of crop straw carbonizing furnace and its carbonizing method |
| CN111892967A (en) * | 2020-07-06 | 2020-11-06 | 河南煜见煜辉生态科技有限公司 | Equipment for producing biological coal by crop straws and preparation process thereof |
| CN114517099A (en) * | 2022-02-25 | 2022-05-20 | 北京丰润铭科贸有限责任公司 | Method for producing biomass coal by carbonizing biomass |
| CN115197730A (en) * | 2022-08-17 | 2022-10-18 | 逊克县聚鑫生物质新材料有限公司 | Preparation device and method of modified biomass charcoal based on low-temperature cracking |
| CN115197730B (en) * | 2022-08-17 | 2024-01-26 | 逊克县聚鑫生物质新材料有限公司 | Preparation device and method of modified biomass charcoal based on low-temperature pyrolysis |
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