CN105062605A - Biomass particle forming method - Google Patents
Biomass particle forming method Download PDFInfo
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- CN105062605A CN105062605A CN201510425895.8A CN201510425895A CN105062605A CN 105062605 A CN105062605 A CN 105062605A CN 201510425895 A CN201510425895 A CN 201510425895A CN 105062605 A CN105062605 A CN 105062605A
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- timber
- forming method
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- feed bin
- dust
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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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- 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
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a biomass particle forming method. The method comprises steps as follows: (1), wood fuel without iron is smashed and screened, and the wood fuel meeting the requirement for particle sizes is obtained; (2), the screened wood fuel is sent to a cyclone separator by wind from a fan, powdery wood fuel at the top of the cyclone separator is sucked to a dust removal device, and non-powdery wood fuel is discharged from the bottom of the cyclone separator; (3), the wood fuel discharged from the bottom of the cyclone separator is sent to a feed bin, and the powdery wood fuel settled at the bottom of the dust removal equipment is also conveyed into the feed bin; (4), the wood fuel in the feed bin is transported to a storage tank and subjected to extrusion forming at the temperature ranging from 70 DEG C to 85 DEG C after hardening and tempering, cooling is performed, and finally, the wood fuel is screened and packaged. With the adoption of the method, the production efficiency can be improved, and the concentration of inhalable particles in the air is reduced.
Description
Technical field
The present invention relates to grain forming method, particularly relate to a kind of biomass grain forming method.
Background technology
Along with the minimizing day by day of oil and coal resources, the whole world is also more and more paid attention to the development and utilization of new forms of energy, and utilize discarded stalk, the produced biomass granule fuel such as wood leftover material also starts to widely use.Wherein, in biomass grain forming technological process, the pre-treatment spent time of raw material is the longest, especially wood fuel, can be mingled with irony impurity, need deironing in timber.And existing employing manpower transports or occurred the loss of timber by belt-conveying, the shipping time is long, dust of easily kicking up, and causes particulate in air concentration high, polluted air environment, needs badly and provides a kind of new biomass grain forming method to solve the problems of the technologies described above.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of biomass grain forming method, can enhance productivity, and reduces Inhalable Particulate concentration.
In order to solve the problems of the technologies described above, the invention provides a kind of biomass grain forming method, comprising the following steps:
(1) after deironing, grinding and processing will be carried out by timber, then screening obtains the timber meeting particle size requirements;
(2) deliver in cyclonic separator by blower fan by the timber wind after screening, the powdery timber at cyclonic separator top is pumped to dust removal installation, and non-powder timber is discharged bottom cyclonic separator;
(3) timber of discharging bottom cyclonic separator is delivered to feed bin, the powdery timber be deposited in bottom dust removal installation is also delivered to feed bin;
(4) timber of feed bin is transported to storage tank, timber is by after modified, and extrusion molding in the temperature range of 70 ~ 85 DEG C, cooling, finally screens packing.
As the improvement of such scheme, described step (1) specifically comprises:
Block timber carries out slicing treatment after deironing;
By the block timber deironing again through slicing treatment, after deliver to pulverizer and carry out pulverizing and sieve the timber obtaining meeting particle size requirements.
As the improvement of such scheme, described step (1) also comprises the step of simultaneously carrying out with block timber processing treatment:
Wood chaff through dynamic sieve screening, obtains the timber meeting particle size requirements after deironing.
As the improvement of such scheme, the particle diameter meeting the timber of particle size requirements in described step (1) is 1.5-2.5mm.
As the improvement of such scheme, described step (2) specifically comprises the following steps:
Deliver to cyclonic separator in by block timber through the timber of pulverization process by blower fan, the powdery timber at cyclonic separator top is pumped to dust removal installation, and non-powder timber is discharged bottom cyclonic separator;
Described wooden chaff through screening process timber and non-powder timber with mix, obtain compound.
As the improvement of such scheme, be provided with dust-removal cloth-bag in described dust removal installation, dust is long-pending is attached to 10s ~ 25s on dust-removal cloth-bag, opens pulse valve and makes dust fall bottom dust removal installation, be discharged in described compound used in combination by discharge rotary valve.
As the improvement of such scheme, described step (3) specifically comprises the following steps:
The bottom of cyclonic separator is slided under the timber sedimentation of non-powder, and by the timber of discharging bottom cyclonic separator by belt-conveying and be transported in feed bin stand-by;
Carry conveyor by worm conveyor and bucket and the timber of feed bin is delivered to storage tank.
As the improvement of such scheme, in described step (4), during modifier treatment, setting conditioning period is 5s ~ 15s, and the moisture controlled of modified rear timber is 10% ~ 13%.
As the improvement of such scheme, described step (4) adopts granule-forming machine to carry out shaping, and time shaping, the compression ratio of ring mould is 1:4 ~ 1:6.
Implement the embodiment of the present invention, there is following beneficial effect:
By the differentiated treatment of the present invention to block timber and wooden chaff, the pretreated speed of timber can be accelerated, and adopt the form of blower fan conveying timber can reduce cost and the duration of transport, avoid losing timber in transit, safe and reliable.After pulverizer, directly adopt blower negative pressure suction timber simultaneously, the aerial diffusion of dust can be reduced, significantly reduce Inhalable Particulate concentration, ensure that the health of field personnel also reduces the atmospheric pollution to environment.In addition, the whole technical process of the present invention carries out whole process setting, debugging and monitoring by PLC to all devices, and realize automatically producing, production efficiency significantly improves.
Accompanying drawing explanation
Fig. 1 is the schema of a kind of biomass grain forming method of the present invention;
Fig. 2 is another schema of a kind of biomass grain forming method of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, the embodiment of the present invention provides a kind of biomass grain forming method, comprises the following steps:
S100, will carry out grinding and processing by timber after deironing, then screening obtains the timber meeting particle size requirements.
S101, deliver in cyclonic separator by blower fan by the timber wind after screening, the powdery timber at cyclonic separator top is pumped to dust removal installation, and non-powder timber is discharged bottom cyclonic separator.
S102, is delivered to feed bin by the timber of discharging bottom cyclonic separator, and the powdery timber be deposited in bottom dust removal installation is also delivered to feed bin.
S103, is transported to storage tank by the timber of feed bin, and after modified, extrusion molding in the temperature range of 70 ~ 85 DEG C, cooling, finally screens packing.
The granular fuel that the method for the invention obtains is wooden fuel, its raw material selected can be Furniture Factory's solid wood offal, waste wood etc., owing to may to be mingled with as irony impurity such as iron nail, bolt, nut, screws in the furniture course of processing or in discarded furniture, the irony impurity in raw material must be removed in case be involved in when wind send in blower fan, damage blower fan.And make biomass granule fuel and need raw material powder to be broken into particle, can be checked the size of particle in step S100 by screening, ensure the reliability of raw material, the particle diameter that the present invention meets the timber of particle size requirements is 1.5-2.5mm.
Because grain diameter is after crushed little, belt-conveying is adopted easily in transportation, to damage timber, worm conveyor or bucket are carried conveyor and are then only applicable to short range transport, the present invention adopts blower fan by the guiding of the timber after pulverizing by air channel, be transported to cyclopneumatic separator, after the particle timber of different-grain diameter enters cyclone tube vertically, air-flow produces strong rotation by the guide functions of turning vane, air-flow enters Whirlwind barrel downwards twist along cylindrical shell, non-powder timber, namely the particle that particle diameter is large is thrown toward barrel under centrifugal action, and under gravity, fall to flowing out tornadotron dust-exhausting port along barrel, discharge from cyclonic separation motor spindle, and powdery timber, the particle that namely particle diameter is little, becomes dust, is sucked up to dust removal installation and carries out control of dust process.
Use wind to send the mode of timber to be utilize the timber after processing lightweight, adopt high-power blower to be transported by air channel by timber, greatly reduce cost and the duration of transport, transport is more effectively reliable.But be only be transported to feed bin by blower fan then can cause in feed bin, in air, being studded with a large amount of powdery timber (dust), powdery timber, due to lightweight, is difficult to sedimentation, not only causes the waste of timber, powdery timber is pellet simultaneously, easily affects the disease of human body respiration aspect.Therefore, the timber adopting wind to send is delivered to cyclonic separator and is separated with non-powder timber by powdery timber by step S101 of the present invention, and adopt dust removal installation to carry out control of dust, powdery timber is deposited in bottom dust removal installation, feed bin is discharged to by discharge rotary valve, thus significantly reduce dust degree of scatter in transportation, reduce the atmospheric pollution to environment.
Step S103, is transported to storage tank by the timber of feed bin, and storage tank feeding is carried out softening modified to quality-adjusting device to timber, finally drops into extrusion molding in granule-forming machine, obtains product after cooling.
Because the shape of timber is varied, block timber needs to carry out cutting into slices, pulverizing, but the timber of wooden chaff shape is then without the need to carrying out above-mentioned steps again, only need limit the particle diameter of wooden chaff, another embodiment of the present invention records how to carry out processing treatment to block timber and wooden chaff simultaneously.
As shown in Figure 2, the embodiment of the present invention provides a kind of biomass grain forming method, comprises the following steps:
S200, block timber carries out slicing treatment after deironing.
S201, by the block timber deironing again through slicing treatment, after deliver to pulverizer and carry out pulverizing and sieve the timber obtaining meeting particle size requirements.
Source due to block timber is the scrap stock of furniture processing or discarded furniture, make wooden fuel, bulk need be cut into particle so that shaping, and remove block timber with the irony impurity such as iron nail.Therefore, when carrying out processing treatment to block timber, first block timber to be cut into sheet, then being refined into particle further by pulverizer.Preferably, in pulverizer, be provided with screen cloth, the mesh aperture of screen cloth is 10mm, and the timber particle diameter after pulverizing is 1.5 ~ 2.5mm, and because particle diameter error is to transport with shapingly not have a significant effect, particle diameter accuracy requirement is not high, carries out detection particle diameter without the need to separately establishing proofing unit.
In addition, at the charging belt of slicing machine and the discharge end of outfeed belt, permanent magnet is installed, removes most irony impurity.And also permanent magnet is installed, the irony impurity do not eliminated above charging belt before pulverizer.
It should be noted that, slicing machine power of motor of the present invention is 130kw, and production capacity is about 8t/h.
S202, delivers to cyclonic separator in by block timber through the timber of pulverization process by blower fan, and the powdery timber at cyclonic separator top is pumped to dust removal installation, and non-powder timber is discharged bottom cyclonic separator.
The present invention adopts blower fan to transport the Duct design of timber: be provided with aggregate tank below the discharge port of pulverizer, airduct is connected with aggregate tank, the fan starting of 55kw, makes to form negative pressure in pipeline, and the timber in aggregate tank is blowed along pipeline.The other end of airduct is connected with cyclonic separator, after the particle timber of different-grain diameter enters cyclone tube vertically, air-flow produces strong rotation by the guide functions of turning vane, air-flow enters Whirlwind barrel downwards twist along cylindrical shell, non-powder timber, the particle that namely particle diameter is large is thrown toward barrel under centrifugal action, and under gravity, fall to flowing out tornadotron dust-exhausting port along barrel, discharge from cyclonic separation motor spindle; And powdery timber, the particle that namely particle diameter is little, becomes dust, is sucked up to dust removal installation and carries out control of dust process.
S203, from the non-powder timber of discharging bottom cyclonic separator by stand-by in belt-conveying to feed bin.
The non-powder timber of discharging bottom cyclonic separator is static to get off, and no longer needs airduct to carry, and by belt-conveying to feed bin, can wait for next step operation.
The step S204 simultaneously carried out with S200 ~ S203 ~ S205:
Wood chaff to refer to when carrying out wood working because cutting and from trees the foam shape wood chip of fallen trees itself, its particle diameter itself is little, only can need use through deironing screening, the pre-treatment of wooden chaff can be carried out with the pre-treatment of block timber simultaneously, saves the treatment time.
S204, wooden chaff carries out deironing by belt magnetic separator de-ironing.
The treatment step of wood chaff realizes deironing by belt magnetic separator de-ironing.Wood chaff raw material is poured in belt magnetic separator de-ironing hopper, wooden chaff is made to fall on belt by the vibrations of hopper, the end of belt is provided with magnetic roller, when wooden chaff along with belt is carried forward and through the magnetic roller of strap end, on irony impurity absorption left magnetic roller cylinder, and wooden chaff is discharged from discharge port, when magnet drum rotates to non-magnetic field, irony impurity falls discharges from slag-drip opening, is separated by iron contamination thus from wooden chaff.
S205, by bolting after deironing, obtains the timber meeting particle size requirements.
Wooden chaff after deironing is put in vibratory screening apparatus, utilizes oscillator exciting that compass screen surface is produced and revolve type vibration again, thus the timber meeting particle size requirements can be sieved out.For the timber not meeting particle size requirements, can drop in pulverizer and pulverize further, until sieve out the timber that particle diameter is 1.5 ~ 2.5mm.
S206, described wooden chaff through screening process timber by belt-conveying to feed bin with non-powder timber with mix, obtain compound.
S207, after dust removal installation control of dust, dust is fallen bottom dust removal installation, is discharged to feed bin mixes with described compound by discharge rotary valve.
Described dust removal installation is pulsed jet cloth filter, is provided with 100 ~ 200 filter bags in machine.During work, enter dust removal installation containing dusty gas by air inlet duct, thick grit directly falls into bottom dust removal installation, and with air-flow turnover upwards, dust is long-pending is attached to filter bag outside surface to dustshot, and the gas after filtration enters pure qi (oxygen) collecting tubule, drains into air through exhaust blower.Deashing process is the pure qi (oxygen) outlet conduits first cutting off this room, the state (locellus blowing-out deashing) making the cloth bag of this room be in airless to pass through.Then unbalanced pulse valve pressurized air carries out pulse jetting deashing, the trip valve turn-off time is enough to ensure that the dust settling peeled off from filter bag after winding-up is to ash bucket, avoid dust behind disengaging filter bag surface again with the phenomenon of the attached collection of air-flow to adjacent filter bag surface, make filter bag ash removal thorough, and by program controller PLC instrument, full automatic control is carried out to vent valve, pulse valve and unloading valve etc.
Be discharged to feed bin finally by discharge rotary valve to mix with described compound, so far the pretreatment work of timber completes.Operation is below that timber is shaping, makes product.
S208, carries conveyor by worm conveyor and bucket and the timber of feed bin is delivered to storage tank.
It should be noted that, storage tank is positioned at the top of forming machine, and need open false bottom drawing mechanism below feed bin time shaping derives timber, and carries conveyor by bucket and timber is promoted to storage tank above forming machine, to guarantee the smooth and easy of blanking.
S209, timber modified 5s ~ 15s under the condition of 20 DEG C ~ 30 DEG C of storage tank.
First drop in quality-adjusting device before the timber of storage tank enters forming machine and soften, conditioning period of the present invention is 5s ~ 15s, and preferably, conditioning period is 20s, and therebetween modified, timber absorbs heat and the moisture of water vapour, makes self deliquescing, is conducive to shaping particles.The moisture controlled of modified rear timber is 10% ~ 13%.
S210, undertaken shaping by the timber input granule-forming machine after modified, time shaping, the compression ratio of ring mould is 1:4 ~ 1:6, and cooling, obtains product, finally screen packing.
Carry out shaping before, the oil plant be pre-mixed sent into by the main frame to forming machine makes main frame be rapidly heated, and treats that built-in temperature reaches more than 75 DEG C, stop oil plant send into.Through modified timber, drop in forming machine.In shaping process, along with pressure roller and ring mould rotate, timber enters into both gap, material is extruded by pressure roller and ring mould, is finally extruded from the forming hole ring mould, and the scraper be arranged on ring mould on forming hole extruding end cuts off, tapping channel is opened after the grain forming squeezed out, particle after shaping is delivered in cooling feed bin, thus realizes the production of biological particles, obtained wooden fuel.Wherein, the density of particle adjusts elasticity by the gap of pressure roller assembly and ring intermode and adjusts.
The present invention obtains wooden fuel's product performance:
A. combustion heat value: the present invention mainly adopts the solid wood offal of Furniture Factory as raw material, and combustion heat value is 4200J/g.
B. density: the density of product depends on the compression ratio of ring mould, as the non-1:5 of compression ratio, product density is 1.33kg/m
3.
C. water ratio: after cooling, particle water ratio is within 8%, and mean value is 7.5%.
By the differentiated treatment of the present invention to block timber and wooden chaff, the pretreated speed of timber can be accelerated, and adopt the form of blower fan conveying timber can reduce cost and the duration of transport, avoid losing timber in transit, safe and reliable.After pulverizer, directly adopt blower negative pressure suction timber simultaneously, the aerial diffusion of dust can be reduced, significantly reduce Inhalable Particulate concentration, ensure that the health of field personnel also reduces the atmospheric pollution to environment.In addition, the whole technical process of the present invention carries out whole process setting, debugging and monitoring by PLC to all devices, and realize automatically producing, the production time of whole moulding process is only 8h, cannot realize automatically producing improve 10h than existing technique, production efficiency significantly improves.
Finally to should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention but not limiting the scope of the invention; although be explained in detail the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.
Claims (9)
1. a biomass grain forming method, is characterized in that, comprises the following steps:
(1) after deironing, grinding and processing will be carried out by timber, then screening obtains the timber meeting particle size requirements;
(2) deliver in cyclonic separator by blower fan by the timber wind after screening, the powdery timber at cyclonic separator top is pumped to dust removal installation, and non-powder timber is discharged bottom cyclonic separator;
(3) timber of discharging bottom cyclonic separator is delivered to feed bin, the powdery timber be deposited in bottom dust removal installation is also delivered to feed bin;
(4) timber of feed bin is transported to storage tank, timber is by after modified, and extrusion molding in the temperature range of 70 ~ 85 DEG C, cooling, finally screens packing.
2. biomass grain forming method as claimed in claim 1, it is characterized in that, described step (1) specifically comprises:
Block timber carries out slicing treatment after deironing;
By the block timber deironing again through slicing treatment, after deliver to pulverizer and carry out pulverizing and sieve the timber obtaining meeting particle size requirements.
3. biomass grain forming method as claimed in claim 2, it is characterized in that, described step (1) also comprises the step of simultaneously carrying out with block timber processing treatment:
Wood chaff through bolting, obtains the timber meeting particle size requirements after deironing.
4. biomass grain forming method as described in claim as arbitrary in claim 1-3, is characterized in that, the particle diameter meeting the timber of particle size requirements in described step (1) is 1.5-2.5mm.
5. biomass grain forming method as claimed in claim 3, it is characterized in that, described step (2) specifically comprises the following steps:
Deliver to cyclonic separator in by block timber through the timber of pulverization process by blower fan, the powdery timber at cyclonic separator top is pumped to dust removal installation, and non-powder timber is discharged bottom cyclonic separator;
Described wooden chaff through screening process timber and non-powder timber with mix, obtain compound.
6. biomass grain forming method as claimed in claim 5, it is characterized in that, be provided with dust-removal cloth-bag in described dust removal installation, dust is long-pending is attached to 10s ~ 25s on dust-removal cloth-bag, opening pulse valve makes dust fall bottom dust removal installation, is discharged in described compound used in combination by discharge rotary valve.
7. biomass grain forming method as claimed in claim 1, it is characterized in that, described step (3) specifically comprises the following steps:
The bottom of cyclonic separator is slided under the sedimentation of non-powder timber, and by the timber of discharging bottom cyclonic separator by belt-conveying and be transported in feed bin stand-by;
Carry conveyor by worm conveyor and bucket and the timber of feed bin is delivered to storage tank.
8. biomass grain forming method as claimed in claim 1, is characterized in that, setting conditioning period during matter process in described step 4 is 5s ~ 15s, and the moisture controlled of modified rear timber is 10% ~ 13%.
9. biomass grain forming method as claimed in claim 1, is characterized in that, described step (4) adopts granule-forming machine to carry out shaping, and time shaping, the compression ratio of ring mould is 1:4 ~ 1:6.
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| CN201510425895.8A CN105062605A (en) | 2015-07-20 | 2015-07-20 | Biomass particle forming method |
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| CN201510425895.8A CN105062605A (en) | 2015-07-20 | 2015-07-20 | Biomass particle forming method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106180124A (en) * | 2016-07-08 | 2016-12-07 | 光大生物能源(含山)有限公司 | A kind of wooden form combustion power generation method |
| CN107298994A (en) * | 2017-08-11 | 2017-10-27 | 宁夏瑞威尔能源环境工程有限公司 | A kind of biomass energy particle composition and preparation method thereof |
| CN109834796A (en) * | 2017-11-24 | 2019-06-04 | 万华禾香板业有限责任公司 | The preparation system of plate wood shavings |
| CN110358602A (en) * | 2019-08-19 | 2019-10-22 | 漳州市陆海环保产业开发有限公司 | A kind of automatic production line and preparation process preparing biomass fuel using useless weedtree material |
| CN112210412A (en) * | 2020-08-21 | 2021-01-12 | 中国市政工程华北设计研究总院有限公司 | System for manufacturing biological granular fuel by using garden garbage and operation process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110358602A (en) * | 2019-08-19 | 2019-10-22 | 漳州市陆海环保产业开发有限公司 | A kind of automatic production line and preparation process preparing biomass fuel using useless weedtree material |
| CN112210412A (en) * | 2020-08-21 | 2021-01-12 | 中国市政工程华北设计研究总院有限公司 | System for manufacturing biological granular fuel by using garden garbage and operation process |
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Application publication date: 20151118 |
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| RJ01 | Rejection of invention patent application after publication |