CN105036128A - Recycle production method for woodcraft wood - Google Patents
Recycle production method for woodcraft wood Download PDFInfo
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- CN105036128A CN105036128A CN201510359418.6A CN201510359418A CN105036128A CN 105036128 A CN105036128 A CN 105036128A CN 201510359418 A CN201510359418 A CN 201510359418A CN 105036128 A CN105036128 A CN 105036128A
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Abstract
The invention provides a recycle production method for woodcraft wood. The method comprises the following steps: primarily crushing of the woodcraft wood; carbonizing; secondary crushing; primary screening or grading; rotary activization; secondary screening for grading; pickling; grinding. The method has the advantages that the production technology of activated carbon is optimized; the woodcraft wood can be recycled to produce activated carbon. Therefore, the method has a very high market application value.
Description
Technical field
The present invention relates to gac field, in particular, a kind of recycling production method of forestry waste.
Background technology
Along with the development of technology, the application of gac is more and more extensive, increasing industry and enterprise have applied to gac, and also have some enterprises to enter activated carbon industry, such as gac is widely used in toxic gas filtration, municipal sewage treatment, tap water and Industrial Wastewater Treatment.Gac, also known as active black, is black powder or granular decolorizing carbon.Gac principal constituent goes back the element such as aerobic, hydrogen in addition to carbon, in its reactivation process, huge surface-area and complicated pore texture are formed gradually, and the adsorption process of gac is just in these holes and to carry out on the surface, the size of gac mesoporosity has the effect of adsorption selection to adsorbate, this is the cause that can not enter due to macromole in the activated carbon pore size less than its hole.Briefly, gac is by being that main material makes raw material containing charcoal, through the hydrophobic adsorbent that high temperature carbonization and activation obtain.Gac contains a large amount of micropore, has huge specific surface area, can effectively remove colourity, stink, can remove most organic pollutants and some inorganics in secondary effluent, comprise the heavy metal etc. that some is poisonous.
Such as, application number is the Chinese patent of 201210451920.6, relates to the method with activated carbon from bamboo powder production shaping activated carbon from bamboo.Activated carbon from bamboo powder put into agitator and adds deionized water, then adding the waterborne polyurethane resin aqueous solution that clay and concentration are 20-40wt%, being stirred to evenly; The mixture mixed is transferred in molding device and makes activated carbon from bamboo molding; Be carry out drying between 65-80 DEG C in temperature, and then temperature be progressively warming up to 150-160 DEG C and dry, prepare shaping activated carbon from bamboo.The content of the activated carbon from bamboo powder in described shaping activated carbon from bamboo is 85-95wt%, and clay is 2-5wt%, and waterborne polyurethane resin is 3-10wt%.The method of activated carbon from bamboo powder production shaping activated carbon from bamboo of the present invention is simple, does not have " three wastes " to discharge, non-environmental-pollution.Gained shaping activated carbon from bamboo is functional, is particularly useful for the application in water treatment, purifying air, siccative etc.
And for example, application number is the Chinese patent of 201310221064.X, disclose a kind of method preparing gac, take a kind of pore-forming material in a kind of carbon precursor polymkeric substance in resol resin, furfuryl alcohol resin, polyacrylonitrile, Zulkovsky starch and polyoxyethylene glycol, polyvinyl alcohol, polyvinyl butyral acetal, mixing, adds a kind of dissolution with solvents in methyl alcohol, ethanol, deionized water; Take activated carbon raw material to join in above-mentioned solution and flood, afterwards dry, 500 ~ 1100 DEG C of charings 0.5 ~ 24 hour under nitrogen atmosphere in microwave high-temperature sintering oven.Preparation active carbon method provided by the invention, its activated carbon product manufacturing gained has the abrasive wear resistance suitable with raw material gac and micropore, and also add mesopore hole than raw material gac, there is Based on Dual-Aperture distribution, specific surface area is large, abrasive wear resistance is high, can meet the application demand of specified conditions.
But how forestry waste being recycled generation gac, is the technical issues that need to address.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of recycling production method of new forestry waste.
Technical scheme of the present invention is as follows: a kind of recycling production method of forestry waste, and it comprises the following steps: by forestry waste primary crushing; Charing; Secondary breaking; First sieving and grading; Revolution activation; Postsearch screening classification; Pickling; Grinding.
Such as, step is comprised after pickling: dehydration; Revolution is dried.
Preferably, described pickling is carried out in sealing.
Preferably, described pickling is carried out in stirring.
Preferably, described pickling adopts hydrochloric acid.
Preferably, described pickling also adopts water vapour.
Preferably, the pickle solution after pickling is reused.
Preferably, before the pickle solution after recycling pickling, also step is comprised: filter out impurities.
Preferably, after filtering out impurities, also comprise step: concentrated described pickle solution.
Preferably, repeatedly described pickling is performed.
Preferably, described pickling comprises multistage pickling.
Adopt such scheme, present invention optimizes the production technique of gac, forestry waste can be recycled and generate gac, there is very high market using value.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of one embodiment of the present of invention;
Fig. 2 is the schematic diagram of another embodiment of the present invention.
Embodiment
For the ease of understanding the present invention, below in conjunction with the drawings and specific embodiments, the present invention will be described in more detail.But the present invention can adopt many different forms to realize, and is not limited to the embodiment described by this specification sheets.It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.
Unless otherwise defined, all technology of using of this specification sheets and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention in this specification sheets just in order to describe specific embodiment is not for limiting the present invention.Term that this specification sheets uses " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
As shown in Figure 1, one embodiment of the present of invention are, a kind of recycling production method of forestry waste, and it comprises the following steps: by forestry waste primary crushing; Charing; Secondary breaking; First sieving and grading; Revolution activation; Postsearch screening classification; Pickling; Grinding.
As shown in Figure 2, another embodiment of the present invention is, a kind of recycling production method of forestry waste, and it comprises the following steps: by forestry waste primary crushing; Charing; Secondary breaking; First sieving and grading; Revolution activation; Postsearch screening classification; Pickling; Grinding; Sieve; Mixing.
Such as, another embodiment of the present invention is, a kind of recycling production method of forestry waste, and it comprises the following steps: charing; Activation; Pickling; Dry; Grinding; Sieve; Mixing.And for example, a kind of recycling production method of forestry waste, it comprises the following steps: by forestry waste primary crushing; Compression moulding; Cutting; Charing; Secondary breaking; First sieving and grading; Activation; Postsearch screening classification; Pickling; Dehydration; Dry; Grinding.And for example, a kind of recycling production method of forestry waste, it comprises the following steps: by forestry waste primary crushing; Compression moulding; Cutting; Charing; Secondary breaking; First sieving and grading; Activation; Postsearch screening classification; Pickling; Dehydration; Dry; Grinding; Sieve; Mixing.
Such as, described primary crushing comprises forestry waste or agricultural wastes is crushed to little bulk, such as, be crushed to volume and be 1 to 50 cubic centimetre, and/or maximum length or maximum width is in 0.8 to 10 centimetre of interval; Such as, mechanical pressure or cutting mode is adopted, by forestry waste or agricultural wastes primary crushing.
Such as, also step is comprised by after forestry waste primary crushing: sieve and obtain macrobead and small-particle.Afterwards, by macrobead and the common compression moulding of small-particle; Or, by macrobead compression moulding, and by small-particle compression moulding; Preferably, pressure during small-particle compression moulding is greater than pressure during macrobead compression moulding, makes small-particle compression moulding comparatively firm like this.
Such as, described compression moulding comprises the forestry waste after by primary crushing and is compressed to shaping raw material, such as shaping sheet, tabular or lumpy material, and such as, its thickness is 1 to 10 centimetre.And for example, described cutting comprises shaping raw material, and the material namely after compression moulding carries out cut mechanically process, makes its volume be 1 to 50 cubic centimetre, and/or maximum length or maximum width are in 0.8 to 10 centimetre of interval.Like this, can make original forestry waste before entering charing, size heterogeneity is less, namely treats that charing raw material has certain volume specification, is unlikely to occur that some powder and some bulk parts carbonize jointly, thus can promotes productive rate.
And for example, described secondary breaking is used for carbonized material broken, such as, be crushed to volume and be less than 50 cubic centimetres, and/or maximum length or maximum width is less than 10 centimetres; Preferably, be crushed to volume and be less than 30 cubic centimetres, and/or maximum length or maximum width are less than 8 centimetres.Then in first sieving and grading, the carbonized material after fragmentation is carried out first sieving and grading, obtain the carbonized material to be activated of classification; Such as, carry out first sieving and grading according to particle diameter, carry out classification by size; Such as each predetermined particle diameter magnitude range is one-level; Such as, size scope is one-level at interval of 1 centimetre or 2 centimetres; Such as, described first sieving and grading adopts realization of sieving.Like this, be conducive to the even realization of subsequent activation step, thus promote activation effect.
And for example, carry out postsearch screening classification after activation, such as, revolution activation after carry out postsearch screening classification, such as, in postsearch screening classification, by activation after treat that pickled material carries out sieving and grading, what obtain classification treats pickled material; Such as, carry out postsearch screening classification according to particle diameter, carry out classification by size; Such as each predetermined particle diameter magnitude range is one-level; Such as, size scope is one-level at interval of 1 centimetre or 2 centimetres; Such as, described postsearch screening classification adopts realization of sieving.Like this, be conducive to the even realization of follow-up acid pickling step, thus promote pickling effect.
Preferably, also step is comprised before described revolution activation: charing.Such as, raw material is carbonized.Such as, described raw material comprises biological species material or waste, mainly plant material or waste, and such as plant waste comprises forestry waste and/or agricultural wastes; Wherein, forestry waste mainly refers to the forestry residue of biomass material resource, comprises forest harvesting residuum, wood machining residues and forest cultivation beta pruning residuum etc.; Agricultural wastes mainly comprise agriculture production, processing of farm products, livestock and poultry breeding industry and urban residents live discharge waste, also agricultural waste is claimed, its composition mainly comprises plant fibrous waste and the large class of feces of livestock and poultry two, in the present invention and each embodiment thereof, agricultural wastes mainly refer to plant fibrous waste.All phyteral raw materials all will pass through charing, to obtain the carbonized material activated.
Preferably, described charing comprises Physical charing, such as, and heating or burning carbonate.Preferably, described charing comprises indirect heating charing.Preferably, described charing comprises the charing of continous way indirect heating.Such as, all raw materials all will through charing, and to obtain the carbonized material activated, wherein, the principle that continous way indirect heating carbonizes hydrogen and the oxygen element combustible pyrolysis mainly utilizing wooden or stalk etc. contained by plant raw material realizes.Such as, described continous way indirect heating charing, comprise the following steps: in 400 to 600 DEG C, make the hydrogen in raw material and oxygen change into methane and CO (carbon monoxide converter) gas, and the generation heat that burnt, make other raw materials proceed identical pyrolysis evenly to carbonize.And for example, also speed of response and temperature is controlled by oxygen-supplying amount and input speed, charging quantity.Such as, increase oxygen-supplying amount to promote carbonization temperature, increase oxygen-supplying amount and input speed to promote speed of response etc., by that analogy.
Preferably, during charing, adopt spiral feeding mode to realize, such as, utilize gravity to adopt spiral feeding mode that raw material is sent into carbonizing apparatus; Preferably, adopt from hot mode, utilize raw material own combustion to produce heat and carry out described charing.Preferably, adopt during charing and heat realization piecemeal, the temperature of each section is arranged from low to high, and the temperature of charging place is lower, and the temperature of discharging place is higher.And for example, during charing, also adopt heat energy recycle, warm air order is returned above-mentioned each section, first returns to the position that temperature is higher, finally shed from the charging that temperature is lower; Preferably, also environmental protection treatment is done to the described warm air shed.Such as, to the described warm air shed by the tap water in a tank, such as, described warm air is passed in water by a S shape pipe and then overflows.Preferably, described S shape pipe arranges open holes, and it arranges one-way membrane, and during for forming negative pressure in described S shape pipe, extraneous air enters described S shape pipe by described one-way membrane, in order to avoid the tap water in tank flows backwards.
Such as, adopt charing cracker to carry out described charing, described charing cracker comprises cracker, lower furnace body, goes out ash bin three parts, and going out ash bin is feed box in essence.The Main Function of described charing cracker is preheating material, carries out pyrolysis, separates out moisture and volatile matter.Preferably, charing cracker is set to cracker provides heat smoke and raw material is carried out to the charring furnace of deep processing.Such as, phyteral raw material enters in cracker by charging opening, through the high-temperature flue gas indirect heating of charring furnace, dry thermal cracking occurs, separates out moisture and volatile matter; Then under the effect of cracker spiral thrust, enter charring furnace, incomplete combustion reaction occurs, remove the volatile matter in raw material further, obtain higher carbon content; Charring furnace is discharged finally by going out charcoal device.In addition, the pyrolysis gas that raw material produces in the pyrolysis of cracker inner drying and the inflammable gas that after entering charring furnace, incomplete combustion produces, light with air mixed in charring furnace, forms high-temperature flue gas.This flue gas enters cracker interlayer under the effect of high temperature draught fan, for the dry thermal cracking of biomass material provides thermal source.Meanwhile, for making full use of this part heat, water jacket can be set outside cracker, for subsequent activation operation provides hot water.
Such as, when system starts, for cracker is preheated to ideal temperature, need charring furnace to be adjusted to roasting kiln state.Namely in charring furnace, add part material, pass into lower air, make it perfect combustion reaction occurs, the heat smoke of generation is used for pre-heat cracker.After cracker reaches ideal temperature, stop supply lower air, and add raw material in cracker, then slowly pass into middle and upper part air, depending on its flow of concrete regulating working conditions.Charring furnace furnace bottom can install the device such as revolving grate or screw auger, arranges star-shaped discharge valve simultaneously, can realize going out charcoal continuously, and prevent air leaking at carbon outleting port.Like this, have the following advantages: energy utilization rate is high, save energy, makes full use of biomass material self-energy, meets the energy requirement of system itself; Pollute low, biomass coke tar by high-temp combustion, greatly reduces the pollution to environment in system; Mechanize, level of automation are high.Data collection and control system can long-distance support, can monitor in real time system state.
Cracker is charging and the charred portion of this charing cracker, comprises: feed zone, dryer section and charing section, preferably, the essential shape of cracker is a columnar bilayer sleeve, such as, inner sleeve outer wall is welded with spiral, and hot wind supply passes through along even tube wall.Such as, extraneous discharge guided to by the induced draft fan of hot blast through ground, and inner sleeve is heated to 500 DEG C by the hot blast through sleeve pipe.Outer tube steel plate is thick reaches 18MM, is wrapped with thermal insulation layer, prevents heat loss.Preferably, inner sleeve is built with a helical screw feeder, and screw-blade and inner sleeve inwall gap are less than 5 millimeters, prevent phyteral raw material from blocking spiral.Preferably, helical screw feeder is from the opening for feed of cracker until the discharge port of cracker, and discharge port one end of cracker is fixing with hanging.Phyteral raw material sends into opening for feed from opening for feed by rotary conveyor after being fractured into less than 10 centimeters particles, and opening for feed is furnished with forced feeding device, prevents phyteral raw material suspension frame from living opening for feed and causes obstruction.Trapezoidally to successively decrease because inner sleeve wall temperature is 500 DEG C-200 DEG C to opening for feed from discharge port, from discharge port more close to, temperature is higher, and such opening for feed material is dried, along with material reach, temperature is more and more higher, in the middle of cracking, reach the carbonization temperature of 400-450 DEG C, material starts pyrolysis voluntarily, and produces heat, introduced air channel between inner sleeve and outer tube by induced draft fan from the bend pipe of discharge port upper end again, continue to cracker heat supply.Phyteral material completes carbonization process after arriving at the discharge port of cracker, falls into lower furnace body, forms the heap bed of material at lower furnace body, and the heat energy that the heap bed of material distributes simultaneously is also introduced interlayer to cracker heat supply by by bend pipe.The material carbonized enters lower furnace body through the discharge port free-falling of cracker.Lower furnace body is the storage bunker of carbonized material, is also the main heating source source of supply of cracker.Carbonized material is piled up in lower furnace body, still continues to carbonize the heat energy produced and is introduced cracker heat supply by suction fan.Simultaneously too high for avoiding material and oxygen fully to contact burn tinctuer, preferably, lower furnace body divides two sections from bottom to top for whole body of heater air feed, keep the burning of material simultaneously, ensure that again material can not be lost by burning, and by regulating air feed, the temperature in lower furnace body can be controlled.The nethermost air feed of lower furnace body ensures that material can burn away after accumulation, makes not carbonize partial material completely and continued charing, avoid raw material to produce.Preferably, epimere cloth wind, in the centre of lower furnace body, is ring type cloth wind, has 6 air outlet tubes, be all set in refractory cements, is at high temperature burned for a long time for preventing.Such as, the air output of every section of cloth wind blows air force by gas blower and regulates.Preferably, lower furnace body topmost is also provided with a venting, for preventing the excessive blast caused of furnace pressure.Preferably, lower furnace body top is also provided with tensimeter, carries out temperature monitoring for dividing three sections of thermopairs from top to bottom.Preferably, lower furnace body conical lower portion has discharging to pull out material agitator, blocks material discharging for ensureing that material is not built on stilts.Preferably, lower furnace body cone upper side has lighting-up tuyere, for baker during furnace lifting and warm furnace operating.Preferably, the pyramid side discharge port of lower furnace body is water-cooled discharge port, is furnished with water-cooling jacket pipe, piling carbon deposit material overlong time and causing jacket pipe rubescent, causing work safety accident for preventing the discharge port of lower furnace body.Preferably, the discharge port of lower furnace body is furnished with electronic discharger.
Go out ash bin and be actually out charcoal case, be connected with the discharge port of lower furnace body, sealing attitude, prevent air from entering and cause material to burn mistake.When discharge port is opened, go out ash bin opening for feed and open, go out in ash bin and have level gage, after material level is full, goes out ash bin opening for feed and close.The helical screw feeder gone out in ash bin starts, outside discharging.Going out ash bin is tightness system, avoids carbonized material and air catalytic combustion, charcoal temperature action when playing fire extinguishing function and reducing.Carbonized material out enters lag cooler through conveying belt, carries out final step and is cooled to 20-40 DEG C, then removes impurity, sandstone, slag etc. through specific-gravity stoner.
Such as, also step is comprised: by raw material primary crushing before described charing, such as, be crushed to maximum length or maximum width to be less than one and to pre-set dimension threshold, then compression moulding, like this, powder can be avoided to enter follow-up carbonization, and directly burning turns to dust and ashes and wastes energy and have no harvest, and cuts afterwards to the molding mass of compression moulding, such as, be cut to volume and be 1 to 50 cubic centimetre, and/or maximum length or maximum width are in 0.8 to 10 centimetre of interval, like this, follow-up carbonization is conducive to.Preferably, also step is performed: sieve for the first time after primary crushing, make maximum length or maximum width be less than one pre-set the fragmentation of dimension threshold after raw material enter compaction procedure, maximum length or maximum width be greater than one pre-set the fragmentation of dimension threshold after raw material continue to do primary crushing process.Such as, pre-set dimension threshold described in and be 0.8 to 10 centimetre.And for example, pre-set dimension threshold described in and be 1 to 5 centimetre.
One of most important step of gac is produced in gac activation.Preferably, described activation comprises revolution activation.Preferably, described revolution activation is internal heat type revolution activation, and such as, adopt chain-type conveying charging, then air blast feeding is piled up in ingress to prevent it; Described revolution activation is carried out in internal heat type revolving activation furnace, and such as, carbonized material to be activated, i.e. material, rotate slowly movement forward with revolving activation furnace, and constantly contact with the steam that the vapour pipe being arranged in stove inwall sprays.Preferably, adopt during activation and heat realization piecemeal, the temperature of each section is arranged from high to low, and the temperature of charging place is higher, and the temperature of discharging place is lower.Preferably, adopt waste-heat vapour pipe or be steam supply system, to improve efficiency of energy utilization, reduction energy consumption.Preferably, also environmental protection treatment is done to the described warm air shed.Such as, to the described warm air shed by the tap water in a tank, such as, described warm air is passed in water by a S shape pipe and then overflows.Preferably, described S shape pipe arranges open holes, and it arranges one-way membrane, and during for forming negative pressure in described S shape pipe, extraneous air enters described S shape pipe by described one-way membrane, in order to avoid the tap water in tank flows backwards.And/or described activation comprises boiling activation.Such as, described boiling activation is carried out in boiling activation furnace, such as, from the boiling activation furnace pipeline tiltedly air of ejection and the mixed gas of steam, forms whirlwind and flows, can drive carbonized material to be activated, i.e. material, to the rotary motion of stove tail in stove; Preferably, first adopt the discharging of primary cyclone separate mode in discharging place of stove tail, derived by current, such as, be conveyed into basin with current; Then also continue to adopt secondary cyclone separate mode that leftover materials are put into collecting bag.
Such as, adopt rotary kiln to activate, wherein, rotary kiln described in the present embodiment, to turn round technological transformation voluntarily on stoving oven basis, by the external-heat commonly used, makes internal heat type into, does not need external heat source.Such as, its total length 16 meters, plug-in 3 sections of steam supply systems, corresponding revolution body of heater is from burner 2 meters of, and every section of steam supply system is furnished with under meter, tensimeter, valve regulated.Full stove 145 steam holes, net distribution, ensures that steam fully contacts with the carbonized material in stove.Opening for feed above burner, by chain conveyor feed.Such as, burner has homemade burner shield cap, and such as, shield cap is annular steel cover body, interior paving refractory cements, and effect is that protection burner heat is scattered and disappeared, and prevents the too high injury to operator of end flue temperature.Such as, cover is outer is furnished with viewing window, and such as, opening for feed enters cover body top and stretches in the circular hole at burner center, and gas blower blowing mouth also enters from circular hole simultaneously, and preferably, the blower tube entered is slightly to blowing down to the bed of material.Material falls in burner from top, is blown afloat by gas blower, advances forward about 50 centimeters, prevents material from piling up at fire door.Material rotates slowly movement forward with rotary kiln, and constantly contact with the steam that the vapour pipe being arranged in stove inwall sprays, preferably, vapour pipe to stretch in stove 5 centimeters, prevents stretching into pipe long, is at high temperature out of shape for a long time, preferably, every root pipe is drilled with 1 millimeter opening, increases vapor pressure, steam is contacted with material more abundant.Preferably, the interior insulating brick of stove and refractory brick are built into two-layer, and prevent the at high temperature temperature distortion of heat loss and body of heater, furnace outer wall temperature only has 150 degree, and in-furnace temperature is roughly respectively 1050,850,650,400 DEG C to stove tail from burner.Heat guides with gas blower and the last induced draft fan of stove and discharges from stove tail, and before waste heat boiler and induced draft fan, water tank drains into air.Preferably, stove inwall refractory brick is built into three row flights, and material can be kicked up with flight, contacts more abundant, reach the uniform effect of activation with steam.Material rotates to the discharging of stove tail through rotary kiln, and material has the pore-creating of steam participating in activation all the time in stove tail moving process, ensures that activation thoroughly.Preferably, discharge port is the square mouth of 600X600MM, installs spiral pipe additional outside discharge port, coils on outer furnace wall, the stretching length 3-4 rice of coil pipe, the cooling that can need according to material requires to regulate length, and object is that when ensureing discharging, material is less to be contacted with air, play the effect of fire extinguishing, allow material not continue to burn mistake, improve workman's efficiency, reduce workman's draw operation temperature.Material activate in stove pyrolysis produce heat energy added stove tail induced draft fan draw, through steam boiler, to boiler heat supplying, and add the water storing tank after operation boiler, reduce boiler consume heat energy.Such as, outer furnace wall arranges steam-pipe outward, with centipede-shaped linear arrangement, stove four periderm steam hole is covered, and reaches steam input evenly comprehensively.Such as, carrying roller is arranged respectively in stove two ends, and intermediate arrangement support roller is greater than 15 centimeters with outer furnace wall gap, is conducive to steam-pipe and passes through.Preferably, stokehold, in, be furnished with wireless thermopair and probe in stove, to in-furnace temperature at-once monitor for rear point three sections.Preferably, vapour pressure solenoid is also arranged in furnace wall by three sections, before measuring, in, the vapor pressure of latter three sections, allows operator judge steam flow, immediately regulates well to activation effect.
Such as, fluidizing furnace is adopted to activate, the fluidizing furnace of the present embodiment is specially for the type of furnace that powder active carbon is produced and regenerated based on fluidization, such as its total length 9 meters, inwall is that refractory cements and refractory materials perfusion form, inwall has unidirectional lower inclined hole, vapour pipe and blast main enter furnace wall from oblique cutting in hole, form the air holes downward along cylinder shape furnace wall, in stove, form whirlwind flowing from the air of pipeline ejection and the mixed gas of steam like this, material can be driven to the rotary motion of stove tail.Such as, opening for feed is provided with feed bin, pressure feeding spiral and gas blower, and powdery carbon raw material moisture content being less than 15% is blown in stove, and guides stove tail in conjunction with stove induced draft fan the most not.Such as, stove tail is furnished with waste heat boiler, and the hot gas of being guided into stove tail by induced draft fan provides thermal source to produce steam through boiler, gets back in stove as activator to through excess pressure.Preferably, be the sleeve pipe of 5 meters long after boiler, the material activated flows to first cyclonic separator of stove tail through sleeve pipe, preferably, arranges water-cooled temperature reducing system outside sleeve pipe, makes to be no more than 100 degree from cyclonic separator temperature of charge out, is conducive to collecting.Preferably, outer second cyclonic separator of lighter streams, two sections of cyclone collections prevent material to scatter and disappear, such as, the material bag-type dust that second segment whirlwind is discharged is collected, and such as, the material of first cyclone collection directly falls into current diversion trench, be conveyed into basin with current, enter next process.
Common, remove iron ion, ash, other heavy metals etc. by pickling; Preferably, described pickling is carried out in sealing.Such as, described pickling is carried out in a sealed meter environment.Preferably, described pickling is carried out in stirring, like this, makes pickling efficiency better high.Preferably, before described pickling, also comprise step: adopt superoxol to carry out pre-treatment, after placing certain hour, carry out described pickling.Such as, adopt concentration to be that the superoxol of 3%-10% is treated pickled material and carried out pre-treatment, place after spending the night and carry out described pickling.Such as, place after 10 hours and carry out described pickling.Preferably, every 1000g treats that pickled material adopts 100mL superoxol to carry out pre-treatment.Hydrogen peroxide and hydrochloric acid have great corrodibility when sharing, and therefore need to place certain hour, treat that hydrogen peroxide is gone up substantially and resolve into oxygen and water completely.
Preferably, described pickling adopts hydrochloric acid.Preferably, described pickling also adopts water vapour.Such as, by the temperature of water vapour heating pickling environment, pickling efficiency is improved.Preferably, the pickle solution after recycling pickling, to save hydrochloric acid consumption, alleviates environmental protection pressure.Preferably, before the pickle solution after recycling pickling, also step is comprised: filter out impurities; Such as, removal precipitates and gets liquid recycling.Preferably, after filtering out impurities, also comprise step: concentrated described pickle solution.Preferably, perform repeatedly described pickling, such as, order performs pickling described in several times.And/or described pickling comprises multistage pickling, such as, order performs the described pickling of some levels; Such as, in every grade of pickling, the content of hydrochloric acid is different; Such as, order performs the described pickling of some levels, and the concentration of the hydrochloric acid of pickling at different levels is arranged from low to high; And for example, in described pickling, after the clean hydrochloric acid of drop, also order comprises softening water cleaning, pure water cleaning step.
Such as, described pickling comprises the following steps: gac activated material, namely treats pickling material, sends into pickling tub, put into tap water, then put into quantitative hydrochloric acid from hydrochloric acid scale tank after adding activated material through chapelet; Afterwards, start agitator motor, stirring velocity can rule of thumb be arranged, and also can not flown off to being slowly promoted to material soon by slow, opening steam valve simultaneously and passing into steam, material is fully contacted with acid; Treat pickling tub water boiling state, and keep boiling after 10 minutes, stop air feed, then close agitator motor; Open Draw off valve afterwards, bleed off pickle solution; Close Draw off valve, put into tap water, open steam valve and start poach; After pickling tub boiling, keep 10 minutes, then stop air feed, close agitator motor; Open Draw off valve, bleed off water lotion.Then with PH test paper test pH value, if pH value is qualified, next operation can be entered, if pH value is defective, can repeats to put into tap water and open the operation that steam valve starts poach, then surveying, till pH value is qualified.PH value is qualified puts into filter cloth bag afterwards material.Hang in vacuum filtration tank with electric hoist.After filter cloth bag is put into vacuum filtration tank, start vacuum pump, observe vacuum buffer tank vacuum table situation, keep after certain numerical value until vacuum tightness, such as keep vacuum for some time, this certain numerical value and/or this for some time can experimentally or experience determine, close vacuum pump.After waiting for that vacuum tightness returns to normal barometric pressure, with electric hoist, filter cloth bag is sling, send into hypomere operation.
Preferably, described pickling comprises burgy pickling.Preferably, hydrochloric acid is adopted to carry out described pickling.Preferably, described burgy pickling is carried out at air-proof condition.Such as, during pickling also by condenser absorb volatilization hydrochloric acid, condensed hydrochloric acid reflux to pickling position, with recycle.Such as, during pickling, hydrochloric acid pumps into pickling tank by vacuum pump, add a certain amount of pure water again to carry out mixing with adjust ph, pH value can rule of thumb or historical data determine, and then pass into steam boiling stirring, steam supply is stopped after 30 minutes, then the water suction retention basin of hydrochloric acid will be mixed with vacuum filtration machine, again pure water is passed in pickling tank and wash, pass into steam and carry out boiling, after 30 minutes, again by water suction second retention basin, pass into pure water again and enter flushing stirring, steam can not be added again, after 30 minutes, the mixture slurry of water and charcoal is exported.Preferably, also mixture slurry is dried.Preferably, described oven dry comprises revolution dries, and/or described oven dry comprises interior heat dries.Such as, first dewater before oven dry.Such as, described dehydration comprises centrifuge dehydration, and/or described dehydration comprises vacuum filtration.Preferably, in described dehydration, the moisture content of material is down to less than 50%.Preferably, the moisture content of material is down to less than 40%.Such as, step is comprised after pickling: dehydration; Dry; Preferably, step is comprised after pickling: dehydration; Revolution is dried.Preferably, adopt whizzer to carry out processed, such as, dewater to residual moisture content lower than 50%.Such as, the mixture slurry of water and charcoal is exported about pumping into centrifuge dewatering to 50% by slush pump, send into stoving oven from transfer roller and dry.Preferably, after described oven dry, comprise step: cyclone collection pulverulent material, and/or, direct blanking collecting granules material.Such as, material delivers to stoving oven through transfer roller, and stoving oven is rotary type stoving oven, inner liner stainless steel liner plate, and on liner plate, weldering is flight, facilitates material to move forward.Drying mode is inner Baking, and namely material and warm air directly touch, and save heat energy consumption like this, and good drying effect, efficiency are high.Warm air is provided by a stainless steel hot wind furnace, by the radiator element heat-shift of producer gas generator and hotblast stove, by gas blower, warm air is blown into stoving oven.Add cyclone dust removal collection device after stoving oven, be furnished with direct blanking port simultaneously, pulverulent material cyclone collection, the direct blanking of granulated.
Such as, be no matter the powdered carbon of new production or regenerated carbon burgy can be regulated index by pickling according to customer demand, as removed iron ion, ash, other heavy metals etc. by pickling.Burgy pickling is preferably carried out at air-proof condition.Such as, first burgy is transported to the stirred pot of about 10 cubic metres that PE makes by water tank use water stream, stir, be transported to pickling tank by slush pump, pickling tank is the PE hold tank of 10 cubic metres, inside there is the metal agitator that PE wraps up, there is venting port above, acid inlet, water-in, porthole, delivery of steam mouth; Here is that 500 object filter clothes are for pickling drainage.Pickling is furnished with condenser, and for absorbing the hydrochloric acid of volatilization, condensed hydrochloric acid reflux is in pickling tank.Pickling tank is provided with two acid-regulating tanks, for storage and the proportioning of acid solution.Hydrochloric acid pumps into pickling tank by vacuum pump, the proportioning data provided according to Technology R & D Center again add a certain amount of pure water and mix, pass into steam boiling again to stir, steam supply is stopped after 30 minutes, the water suction retention basin of hydrochloric acid will be mixed with vacuum filtration machine, again pure water is passed in pickling tank and wash, pass into steam and carry out boiling, after 30 minutes, again by water suction second retention basin, pass into pure water again and enter flushing stirring, steam can not be added again, about the mixture slurry of water and charcoal being pumped into centrifuge dewatering to 50% by slush pump after 30 minutes, carry out oven dry from transfer roller feeding stoving oven and obtain product.
Preferably, described pickling comprises the pickling of particle charcoal.Such as, will treat that a pickling material charcoal is placed in filtration washing trough, and then put into the first pickling tub, add the hydrochloric acid pre-seting concentration, wherein pre-set concentration can rule of thumb or historical data determine, such as, 1mol/L to 5mol/L or other; Then pass into and be steam heated to 80 degree, stir while lead to steam limit.Then take out from the first pickling tub and filter washing trough, drop water purification, such as, leach most of water, such as no longer include continuous print current, only have interrupted water droplet, then put into the second pickling tub, add softening water, add steam to 80 and spend, stir while add steam limit, take out after 30 minutes, drop water purification, then puts into the 3rd pickling tub, adds pure water, stir drop water purification after rinsing, then dewater, dry.Such as, rotary type is adopted to dry; Preferably, also adopt inner Baking, now material directly contacts with warm air, saves heat energy consumption like this, and good drying effect, efficiency are high.Such as, particle charcoal pickling installation has 4 acidproof ponds of resin and hanging device, and filters washing trough, vapour pipe, pure water pipeline and soft water pipeline etc.First about 300 kilograms are treated that a pickling material charcoal loads to filter in washing trough, lift into the first pickling tub, add water the solution prepared with hydrochloric acid, passes into and be steam heated to 80 degree, stirs while lead to steam limit.After 30 minutes, stop steam, and filtration washing trough is hung out, ooze clean most of water by the aperture filtering washing trough periphery, then hang in the second pickling tub, in pond, add softening water, add steam to 80 to spend, stir while add steam limit, take out after 30 minutes, drop water purification, lift into the 3rd pickling tub, add pure water in pond, no longer pass into steam, stir after rinsing, put into the 4th pond draining.The water acid mixed solution of the first pickling tub, after liquid impurity is too much, put into retention basin corresponding on the downside of the first pickling tub, the water of the second pickling puts into the second corresponding retention basin, and when the first pickling tub needs moisturizing, gives moisturizing.The rest may be inferred.Moisture content, through lifting into separating machine, is removed to 50% by the material of the good water of drop, delivers to after stoving oven oven dry, obtain material to be ground through transfer roller.
Preferably, select to perform soft matter abrasive lapping or hard ware material grinding according to the hardness of material, save energy can be conducive to like this and reduce equipment attrition.Such as, perform soft matter abrasive lapping for the gac of the raw material production such as plank skin, stalk, perform hard ware material grinding for the gac of the raw material production such as bamboo, wooden unit.Such as, described grinding adopts blade of a sword formula crumbling method to realize.Preferably, also perform step after described grinding: air inducing sieves, such as, adopt induced draft fan and screen cloth, the carbon dust after grinding is introduced the feed box of sealing.Preferably, also step is performed after described grinding: mixing.Like this, flexible proportioning can be carried out according to the demand of user.Such as, powdery grinding is divided into soft matter abrasive lapping and hard ware material grinding, and segmentation is conducive to save energy and reduces equipment attrition like this.Soft matter abrasive lapping is for the gac being raw material production with plank skin, the hardness of this charcoal is low, easy fragmentation, preferred employing blade of a sword formula shredder assembly, such as, have 6 to rotate stainless steel blade in device, the material passed through is broken into powder under the blade blade of a sword is broken, and qualified material introduces the feed box of sealing through induced draft fan and screen cloth, blast feed bin through feed box, then enter Vacuum Packaging Machine.Hard ware material send Raymond mill to grind, and sends into feed bin through vacuum pneumatic conveying, then proceeds to Vacuum Packaging Machine packaging.Whole system continuous seepage, continuous feeding and discharging, is also furnished with mixing device after grinding, carries out proportioning to product according to customer demand.Such as, described mixing device arranges some counterweight tank, and a tempering tank with some air intake vents, is mixed by each carbon dust in counterweight tank by wind-force in tempering tank.
And for example, a kind of forestry waste recycle device, it adopts the recycling production method of forestry waste described in above-mentioned any embodiment to realize, or it has each technical characteristic of the recycling production method of forestry waste described in above-mentioned any embodiment.Such as, it comprises activating apparatus, pickler, drying unit and the milling apparatus that order is arranged.Wherein, described activating apparatus is used for carbonized material to activate to promote its adsorptive power, obtains treating pickled material; Described pickler is used for treating pickled material pickling by described and dry, and obtains material to be ground; Described milling apparatus is used for described ground material to be ground, obtains described gac.Such as, a kind of forestry waste recycle device, it comprises heating carbonizing apparatus, activating apparatus, pickler, drying unit, milling apparatus, sieving equipment and mixing device that order is arranged.And for example, a kind of forestry waste recycle device, it comprises primary crushing device that order arranges, heating carbonizing apparatus, secondary crushing device, first sieving and grading device, activating apparatus, postsearch screening sorting equipment, pickler and milling apparatus.And for example, a kind of forestry waste recycle device, it comprises primary crushing device that order arranges, compression molding device, cutting unit, heating carbonizing apparatus, secondary crushing device, first sieving and grading device, activating apparatus, postsearch screening sorting equipment, pickler and milling apparatus.And for example, a kind of forestry waste recycle device, it comprises primary crushing device that order arranges, compression molding device, cutting unit, heating carbonizing apparatus, secondary crushing device, first sieving and grading device, activating apparatus, postsearch screening sorting equipment, pickler, dewatering unit, drying unit and milling apparatus.And for example, also comprise sieving equipment and mixing device, described sieving equipment connects described milling apparatus.
Such as, described primary crushing device is forestry waste primary crushing device, and such as, described forestry waste primary crushing device is used for forestry waste primary crushing, obtains primary crushing raw material; Described compression molding device is used for the compression moulding of primary crushing raw material, obtains shaping raw material; Described cutting unit is used for shaping raw material to cut, and obtains waiting to carbonize raw material; Described heating carbonizing apparatus is used for obtain carbonized material after the charing of charing raw material; Described secondary crushing device is used for carbonized material broken; Described first sieving and grading device is used for the carbonized material after fragmentation to carry out first sieving and grading, obtains the carbonized material to be activated of classification; Described activating apparatus is used for activation carbonized material to be fractionated to activate to promote its adsorptive power, obtains treating pickled material; Such as, described activating apparatus is revolution activating apparatus; Described postsearch screening sorting equipment is used for treating that pickled material carries out postsearch screening classification, and what obtain classification treats pickled material; Described pickler is used for classification to treat pickled material pickling, dehydration drying, and obtains material to be ground; Described milling apparatus is used for described ground material to be ground, obtains described gac.And for example, described sieving equipment, for carrying out sieving stage treatment by the carbon dust obtained after described ground material to be ground, such as, described sieving equipment arranges induced draft fan and screen cloth, sieves after stage treatment, the carbon dust after grinding is introduced the feed box of sealing for the carbon dust after grinding is carried out air inducing.And for example, described mixing device is used for the carbon dust after grinding or after stage treatment of sieving to mix.
Such as, sieve is also set between primary crushing device and compression molding device and gets device, for by after forestry waste primary crushing, sieve and obtain macrobead and small-particle.Afterwards, be transported to compression molding device, by it by macrobead and the common compression moulding of small-particle; Or compression moulding respectively; Preferably, described compression molding device comprises small-particle press unit and macrobead press unit, and described macrobead press unit is used for macrobead compression moulding, and described small-particle press unit will be used for small-particle compression moulding; Wherein, pressure during small-particle compression moulding is greater than described macrobead press unit by pressure during macrobead compression moulding by described small-particle press unit, makes small-particle compression moulding comparatively firm like this.
Such as, described compression molding device is used for the forestry waste after primary crushing being compressed to shaping raw material, such as shaping sheet, tabular or lumpy material, and such as, its thickness is 1 to 10 centimetre.And for example, described cutting unit is used for shaping raw material, and the material namely after compression moulding, carries out cut mechanically process, makes its volume be cut into 1 to 50 cubic centimetre, and/or, make its volume be cut into maximum length or maximum width is in 0.8 to 10 centimetre of interval.Like this, can make original forestry waste before entering charing, size heterogeneity is less, namely treats that charing raw material has certain volume specification, is unlikely to occur that some powder and some bulk parts carbonize jointly, thus can promotes productive rate.
And for example, described secondary crushing device is used for carbonized material broken, such as, be crushed to volume and be less than 50 cubic centimetres, and/or maximum length or maximum width is less than 10 centimetres; Preferably, be crushed to volume and be less than 30 cubic centimetres, and/or maximum length or maximum width are less than 8 centimetres.Then in first sieving and grading device, the carbonized material after fragmentation is carried out first sieving and grading, obtain the carbonized material to be activated of classification; That is, described first sieving and grading device is used for the carbonized material after fragmentation to carry out first sieving and grading, obtains the carbonized material to be activated of classification; Such as, carry out first sieving and grading according to particle diameter, carry out classification by size; Such as each predetermined particle diameter magnitude range is one-level; Such as, size scope is one-level at interval of 1 centimetre or 2 centimetres; Such as, described first sieving and grading device arranges primary filter sieve, for carrying out filtering screening classification by size.Like this, be conducive to the even realization of subsequent activation step, thus promote activation effect.
One of most important step of gac is produced in gac activation.Such as, described activating apparatus comprises revolution drying unit.Preferably, described activating apparatus comprises internal heat type revolution drying unit.Preferably, described revolution drying unit is internal-heated rotary furnace.Such as, described activating apparatus employing chain-type is delivered into expects described revolution drying unit, and then air blast feeding is piled up in ingress to prevent it; Now, described revolution activation is carried out in internal heat type revolving activation furnace, and such as, carbonized material to be activated, i.e. material, rotate slowly movement forward with revolving activation furnace, and constantly contact with the steam that the vapour pipe being arranged in stove inwall sprays.Preferably, described activating apparatus or described revolving activation furnace arrange heating system or gradient-heated system piecemeal, and heat realization piecemeal for making to adopt during activation, the temperature of each section is arranged from high to low, and the temperature of charging place is higher, and the temperature of discharging place is lower.Preferably, described activating apparatus or described revolving activation furnace arrange waste-heat vapour pipe or steam supply system, to improve efficiency of energy utilization, reduce energy consumption.Preferably, the burner of described internal-heated rotary furnace arranges burner shield cap.Preferably, described burner shield cap comprises annular steel cover body, and its inside arranges refractory cements.Preferably, described revolution drying unit also arranges steam supply system, and the shaft of described internal-heated rotary furnace arranges some steam holes, and it connects described steam supply system.Preferably, some described steam supply systems are set.Preferably, the shaft of described internal-heated rotary furnace evenly arranges some steam holes.Wherein, the aperture of steam hole is determined according to the shaft volume of internal-heated rotary furnace and reaction mass consumption, also can adjust in actual applications.Preferably, described activating apparatus or described revolving activation furnace also arrange cleaner, for making environmental protection treatment to the described warm air shed.Such as, described cleaner comprises a S shape Guan Yuyi tank, for the described warm air shed by the tap water in a tank, such as, described warm air is passed in water by a S shape pipe and then overflows.
And for example, postsearch screening sorting equipment is set between activating apparatus and pickler, such as, postsearch screening classification is carried out by described postsearch screening sorting equipment after revolution activation, such as, described postsearch screening sorting equipment be used in postsearch screening classification, by activation after treat that pickled material carries out sieving and grading, what obtain classification treats pickled material; Such as, described postsearch screening sorting equipment arranges second stage filter sieve, for carrying out filtering screening classification by size.Like this, be conducive to the even realization of follow-up acid pickling step, thus promote pickling effect.
Such as, described pickler arranges pickling tub, hydrochloric acid storer and the hydrochloric acid with inlet valve and Draw off valve and adds device, steam evaporator and water vapour control valve, the agitator with agitator motor, filter cloth bag, electronic loop wheel machine, vacuum filtration tank and vacuum pump.Such as, described pickler carries out pickling in the following ways: gac activated material, namely treats pickling material, sends into pickling tub, put into tap water, then put into quantitative hydrochloric acid from hydrochloric acid scale tank after adding activated material through chapelet; Afterwards, start agitator motor, stirring velocity can rule of thumb be arranged, and also can not flown off to being slowly promoted to material soon by slow, opening steam valve simultaneously and passing into steam, material is fully contacted with acid; Treat pickling tub water boiling state, and keep boiling after 10 minutes, stop air feed, then close agitator motor; Open Draw off valve afterwards, bleed off pickle solution; Close Draw off valve, open inlet valve and put into tap water, open steam valve and start poach; After pickling tub boiling, keep 10 minutes, then stop air feed, close agitator motor; Open Draw off valve, bleed off water lotion.Then with PH test paper test pH value, if pH value reaches requirement, next operation can be entered, if pH value is defective, can repeats to put into tap water and open the operation that steam valve starts poach, then surveying, till pH value reaches requirement.PH value is qualified puts into filter cloth bag afterwards material.Use electronic loop wheel machine, such as electric hoist, hang in vacuum filtration tank.After filter cloth bag is put into vacuum filtration tank, start vacuum pump, observe vacuum buffer tank vacuum table situation, keep after certain numerical value until vacuum tightness, such as keep vacuum for some time, this certain numerical value and/or this for some time can experimentally or experience determine, close vacuum pump.After waiting for that vacuum tightness returns to normal barometric pressure, with electric hoist, filter cloth bag is sling, send into hypomere operation.This design, only can adopt a pickling tub.Preferably, described milling apparatus arranges soft matter abrasive lapping unit, and/or described milling apparatus arranges hard ware material grinding unit.Like this, by powdery grinding is divided into soft matter abrasive lapping and hard ware material grinding, can select to perform soft matter abrasive lapping or hard ware material grinding according to the hardness of material, the hardness of this charcoal is low, easy fragmentation, can be conducive to save energy like this and reduce equipment attrition.Such as, for adopting soft matter abrasive lapping unit to perform soft matter abrasive lapping with the gac of the raw material production such as plank skin, stalk, hard ware material grinding is performed for adopting hard ware material grinding unit with the gac of the raw material production such as bamboo, wooden unit.Such as, described soft matter abrasive lapping unit arranges blade of a sword formula shredder assembly.Such as, have 6 to rotate stainless steel blade in blade of a sword formula shredder assembly, the material passed through is broken into powder under the blade blade of a sword is broken, and qualified material introduces the feed box of sealing through induced draft fan and screen cloth, blasts feed bin, then enter Vacuum Packaging Machine through feed box.And for example, hard ware material send Raymond mill to grind, and sends into feed bin through vacuum pneumatic conveying, then proceeds to Vacuum Packaging Machine packaging.Whole system continuous seepage, continuous feeding and discharging, is also furnished with mixing device after grinding, carries out proportioning to product according to customer demand.
And for example, a kind of method for prodn. of activated carbon, it comprises the recycling production method of forestry waste described in above-mentioned any embodiment, or it has each technical characteristic of the recycling production method of forestry waste described in above-mentioned any embodiment.
Further, embodiments of the invention also comprise, each technical characteristic of the various embodiments described above, the recycling production method of the forestry waste be mutually combined to form or forestry waste recycle device or method for prodn. of activated carbon.
It should be noted that, above-mentioned each technical characteristic continues combination mutually, is formed not in above-named various embodiment, is all considered as the scope that specification sheets of the present invention is recorded; Further, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (10)
1. a recycling production method for forestry waste, is characterized in that, comprise the following steps:
By forestry waste primary crushing;
Charing;
Secondary breaking;
First sieving and grading;
Revolution activation;
Postsearch screening classification;
Pickling;
Grinding.
2. recycle production method according to claim 1, it is characterized in that, described pickling is carried out in sealing.
3. recycle production method according to claim 1, it is characterized in that, described pickling is carried out in stirring.
4. according to the arbitrary described recycling production method of claims 1 to 3, it is characterized in that, described pickling adopts hydrochloric acid.
5. recycle production method according to claim 4, it is characterized in that, described pickling also adopts water vapour.
6. recycle production method according to claim 5, it is characterized in that, the pickle solution after recycling pickling.
7. recycle production method according to claim 6, it is characterized in that, before the pickle solution after recycling pickling, also comprise step: filter out impurities.
8. recycle production method according to claim 7, it is characterized in that, after filtering out impurities, also comprise step: concentrated described pickle solution.
9. recycle production method according to claim 8, it is characterized in that, perform repeatedly described pickling.
10. recycle production method according to claim 8, it is characterized in that, described pickling comprises multistage pickling.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107966384A (en) * | 2017-11-22 | 2018-04-27 | 洛阳理工学院 | A kind of cement paste is die-filling, forming method |
| CN111263669A (en) * | 2018-10-03 | 2020-06-09 | 株式会社大木工艺 | Method and system for recycling waste |
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| CN103787330A (en) * | 2013-10-21 | 2014-05-14 | 溧阳市浙大产学研服务中心有限公司 | Method for preparing activated carbon from apricot shells, pinecones and rice hulls |
| CN104528717A (en) * | 2015-02-01 | 2015-04-22 | 庄林生 | Preparation method of briquetted active carbon |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333180A (en) * | 2001-09-04 | 2002-01-30 | 郑兴福 | Method for preparing activated char from bamboo material |
| CN103787330A (en) * | 2013-10-21 | 2014-05-14 | 溧阳市浙大产学研服务中心有限公司 | Method for preparing activated carbon from apricot shells, pinecones and rice hulls |
| CN104528717A (en) * | 2015-02-01 | 2015-04-22 | 庄林生 | Preparation method of briquetted active carbon |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107966384A (en) * | 2017-11-22 | 2018-04-27 | 洛阳理工学院 | A kind of cement paste is die-filling, forming method |
| CN111263669A (en) * | 2018-10-03 | 2020-06-09 | 株式会社大木工艺 | Method and system for recycling waste |
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Address after: 055250 Xingtai City, Hebei province Julu County Yan Tuan Zhen Xing Road No. 14 Applicant after: HEBEI DEQIAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: 055250 Xingtai City, Hebei province Julu County Yan Tuan Zhen Xing Road No. 14 Applicant before: HEBEI DEQIAN BIOTECHNOLOGY CO., LTD. |
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