CN101450803A - Method for producing silicates and powder carbon by biomass material - Google Patents
Method for producing silicates and powder carbon by biomass material Download PDFInfo
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- CN101450803A CN101450803A CNA2007101991139A CN200710199113A CN101450803A CN 101450803 A CN101450803 A CN 101450803A CN A2007101991139 A CNA2007101991139 A CN A2007101991139A CN 200710199113 A CN200710199113 A CN 200710199113A CN 101450803 A CN101450803 A CN 101450803A
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- powder carbon
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 title claims abstract description 18
- 239000002028 Biomass Substances 0.000 title claims abstract description 16
- 239000000843 powder Substances 0.000 title claims description 34
- 238000004519 manufacturing process Methods 0.000 title abstract description 13
- 150000004760 silicates Chemical class 0.000 title 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 25
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 23
- 150000001875 compounds Chemical class 0.000 claims abstract description 21
- 239000000376 reactant Substances 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims abstract description 4
- 239000012620 biological material Substances 0.000 claims description 60
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 26
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 22
- 229910052710 silicon Inorganic materials 0.000 claims description 22
- 239000010703 silicon Substances 0.000 claims description 22
- 239000010902 straw Substances 0.000 claims description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- -1 basic metal inorganic acid salt Chemical class 0.000 claims description 13
- 235000007164 Oryza sativa Nutrition 0.000 claims description 12
- 229910052728 basic metal Inorganic materials 0.000 claims description 12
- 235000009566 rice Nutrition 0.000 claims description 12
- 241000209140 Triticum Species 0.000 claims description 10
- 235000021307 Triticum Nutrition 0.000 claims description 10
- 239000010903 husk Substances 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 238000005336 cracking Methods 0.000 claims description 9
- 239000002956 ash Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 7
- 239000011707 mineral Substances 0.000 claims description 7
- 235000010755 mineral Nutrition 0.000 claims description 7
- 241000196324 Embryophyta Species 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 240000008042 Zea mays Species 0.000 claims description 6
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 6
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 6
- 235000005822 corn Nutrition 0.000 claims description 6
- 239000003610 charcoal Substances 0.000 claims description 5
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 4
- 240000006394 Sorghum bicolor Species 0.000 claims description 4
- 235000015505 Sorghum bicolor subsp. bicolor Nutrition 0.000 claims description 4
- 235000011684 Sorghum saccharatum Nutrition 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000047 product Substances 0.000 claims description 4
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 4
- 208000006558 Dental Calculus Diseases 0.000 claims description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 3
- 235000015320 potassium carbonate Nutrition 0.000 claims description 3
- 235000017550 sodium carbonate Nutrition 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 150000007524 organic acids Chemical class 0.000 claims description 2
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims description 2
- 229910000160 potassium phosphate Inorganic materials 0.000 claims description 2
- 229940093916 potassium phosphate Drugs 0.000 claims description 2
- 235000011009 potassium phosphates Nutrition 0.000 claims description 2
- WVULZDFWPQCPPJ-UHFFFAOYSA-N potassium;hydrochloride Chemical compound Cl.[K] WVULZDFWPQCPPJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000001488 sodium phosphate Substances 0.000 claims description 2
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 2
- OTNVGWMVOULBFZ-UHFFFAOYSA-N sodium;hydrochloride Chemical compound [Na].Cl OTNVGWMVOULBFZ-UHFFFAOYSA-N 0.000 claims description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 2
- 238000001914 filtration Methods 0.000 claims 2
- 239000002253 acid Substances 0.000 claims 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims 1
- 239000000920 calcium hydroxide Substances 0.000 claims 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000004227 thermal cracking Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 12
- 239000011734 sodium Substances 0.000 description 12
- 241000209094 Oryza Species 0.000 description 10
- 229910052814 silicon oxide Inorganic materials 0.000 description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 5
- 229910052700 potassium Inorganic materials 0.000 description 5
- 239000011591 potassium Substances 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 235000019353 potassium silicate Nutrition 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 244000068988 Glycine max Species 0.000 description 2
- 235000010469 Glycine max Nutrition 0.000 description 2
- 244000046109 Sorghum vulgare var. nervosum Species 0.000 description 2
- 240000000359 Triticum dicoccon Species 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001339 alkali metal compounds Chemical class 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 150000003818 basic metals Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000004686 pentahydrates Chemical class 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Silicon Compounds (AREA)
- Processing Of Solid Wastes (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention discloses a method for producing silicate and powdered carbon by utilizing a biomass material. The biomass material is directly mixed with a reactant to contact to perform a chemical reaction during the thermal cracking, for example, the biomass material reacts with a compound containing an alkali metal element to produce powdery or blocky alkali metal silicate and the powdered carbon. The method has the advantages of low equipment cost and simple process.
Description
Technical field
The invention relates to the method for utilizing biological material to produce silicate and powder carbon, is replenishing and the part improvement patent application formerly (application number PCT/CN2007/000567).
Background technology
Biological material mainly obtains from timber and forest waste, agricultural wastes, agricultural residual processing thing, oilseed plant, animal excrement, city country life rubbish etc., have renewable, low wide, the advantage such as reserves are big of polluting, distribute, be widely used in the middle of the industrial production at present.
Biological material contains elements such as a large amount of carbon, silicon, crop stalks such as paddy rice, wheat, soya bean, corn, Chinese sorghum for example, and husk, rice husk etc., carbon content reaches about 30%, and the silicon oxide-containing amount can reach 10% (in the ash content silicon content nearly 60%).As seen, biological material also is a kind of important face of land Mineral resources industrial raw material, has occurred in the prior art utilizing rice hull ash to produce the method for water glass, activated carbon.
In the middle of the aforementioned wet production of utilizing biological material, the mode of utilizing element silicon in rice wheat straw or the rice husk all is that to utilize the ashes after the burning of biological materials such as rice wheat straw or rice husk be plant ash or rice hull ash, described in Chinese patent application number 01810425.8.
Summary of the invention
Main purpose of the present invention provides a kind of method of utilizing biological material to produce silicate and powder carbon, utilize sodium hydroxide or materials such as potassium hydroxide or yellow soda ash or salt of wormwood or sodium sulfate or vitriolate of tartar to the biological material cracked promoter action of being heated, biological material can be decomposed fast and easily, utilize simultaneously the aforesaid material that contains sodium or potassium when suitable high temperature with biological material in contained silicon oxide be easy to carry out the characteristic of chemical reaction, but the method for the silicate of acquisition suitability for industrialized production sodium or potassium; When thermo-cracking is when carrying out, then simultaneously can obtain a large amount of powder carbons under anoxic condition.This production method has abundant, low, the technical process characteristic of simple of equipment cost of raw material sources.
Technical scheme of the present invention is: a kind of method of utilizing biological material to produce silicate and powder carbon, and make biological material when being subjected to thermo-cracking, directly contact mixing with reactant, be heated to temperature of reaction and chemical reaction takes place.
According to a second aspect of the invention, the invention provides the dry method production process of a kind of direct production powdery or block anhydrous alkali metal silicate.By biological material is the chemical reaction of alkalimetal silicate with the reactant generation principal product that reacts directly, and the chemical reaction that is taken place is selected from but is not limited to:
2NaOH+SiO
2＝＝＝》Na
2SiO
3+H
2O；
Na
2CO
3+ SiO
2===" Na
2SiO
3+ CO
2And
Na
2SO
4+SiO
2＝＝＝》Na
2SiO
3+SO
3；
General formula is: Na
2O.X+SiO
2===" Na
2SiO
3+ X.
According to the biological material silicon content, be divided into three kinds of situations.First kind of situation, biological material comprises not siliceous biological material, reactant comprises the compound of siliceous mineral matter and alkali metal containing element; Second kind of situation, biological material are the silicon containing biomass material, and reactant comprises the compound by the alkali metal containing element of biological material silicon content equivalent proportioning, and this situation is that the present invention advocates preferentially and adopts; The third situation, biological material comprise siliceous and not siliceous biological material, according to the average silicon content of biological material, add the compound and the thin silica powder of the alkali metal containing element of equivalent proportioning.
According to a third aspect of the invention we, utilize the characteristics that contain a large amount of carbon in the biological material, biological material is carried out thermo-cracking under aerobic, anoxic or the anaerobic state, so that manufacture powder carbon.
Utilize in the method in that the present invention is aforesaid, can be earlier biological material and reactant be pre-mixed and be mixture, again this mixture is inserted in the airtight stove or direct this mixture of filling in stove; Again internally by resistance wire or outside, or simultaneously internally with the indirect heating stove.This stove leaves the outlet of hot pyrolysis gas, and this splitting gas can separate its various compositions and utilize, or this stove of heating that acts as a fuel.
The present invention is significant with respect to the effect of prior art, have following beneficial effect: the present invention utilizes biological material directly to contact the production of carrying out fast pyrolysis generation powder carbon and silicate simultaneously with reactant, make that production process is quick, technology is very simple, and formerly the production stage of technology is first charing biological material, utilizes the alkali of sodium or potassium or the biological material after the charing of metal-salt pyroprocessing to obtain silicate and powder carbon or powdered active carbon again.
Embodiment
Embodiment 1
The invention provides a kind of method of utilizing biological material to produce silicate and powder carbon.Concrete grammar is: continue the reactant that the existing dry production water glass of employing is adopted: alkali metal hydroxide or basic metal inorganic acid salt and thin silica powder, part by weight for each reactant is identical with ratio of the prior art, wherein basic metal is meant sodium, potassium, calcium or magnesium, the alkali metal compound of sodium, potassium preferably, the basic metal inorganic acid salt can be selected from vitriol and carbonate.Make described reactant and biological material be uniformly mixed to form mixture, mixture is placed on one can be airtight but have in the stove of pneumatic outlet, near stove internal mix thing, settle a resistive heating device, the heating stove makes the stove internal temperature be increased to reactant and silicon oxide reacts more than needed temperature 300-600 degree centigrade, in order to utilize the energy of biomass through pyrolysis gas, the heating stove that it can be acted as a fuel reduces the heating electricity consumption, perhaps with composition (as the tar that contains in the gas of splitting gas or reactant decomposition generation, wood vinegar, combustible gas, oxysulfides etc.) separating the back utilizes.Perhaps the mixture for the treatment of thermo-cracking is held by fire grate in stove bottom, make mixture directly contact be used for heating the flame of stove, at this moment, the splitting gas outlet is by pipe connection and form in the stove negative pressure by induced draft fan and draw splitting gas.
Wherein, biological material can be selected from: crop stalks such as paddy rice, wheat, soya bean, corn, Chinese sorghum for example, the biological material that silicon contents such as husk, rice husk are more; Few biological materials of silicon content such as bavin firewood, weeds, branch leaf, sawdust, forest farm waste, bagasse, furfural dregs, paper mill processing waste for example.
Embodiment 2
This embodiment is identical with principle and the effect of embodiment 1, no longer repeats.Difference is the not siliceous biological material of the special selection of this embodiment, and reactant comprises the compound of siliceous mineral matter and alkali metal containing element.
The silicon containing biomass material is not selected from: weeds, sawdust, branch leaf; The compound of alkali metal containing element is selected from: the oxyhydroxide of alkali metal containing element, basic metal inorganic acid salt and basic metal organic acid salt, and wherein the oxyhydroxide of alkali metal containing element is selected from sodium hydroxide and potassium hydroxide; The basic metal inorganic acid salt is selected from: yellow soda ash, salt of wormwood, sodium sulfate, vitriolate of tartar, hydrochloric acid sodium, hydrochloric acid potassium, sodium phosphate and potassiumphosphate; The basic metal organic acid salt is selected from: organic acid sodium salt and organic acid potassium salt; Siliceous mineral matter is selected from thin silica powder, diatomite and carclazyte.
Because silicon contents such as sawdust, tree branches and leaves, weeds are extremely low,, need to add enough thin silica powder in order to obtain the silicate of required modulus.Can be earlier mix with biological material behind the compound uniform mixing with quartz sand powder and alkali metal containing element again and carry out combustion reactions, preferred weight proportion is a silicon containing biomass material not: the compound of alkali metal containing element (as sodium hydroxide): siliceous mineral matter=～2-3:1:0.7.
Embodiment 3
This embodiment is identical with principle and the effect of embodiment 2, no longer repeats.Difference is the siliceous biological material of the special selection of this embodiment, and reactant comprises the compound of alkali metal containing element.
Wherein, the silicon containing biomass material is selected from: straw, rice husk wheat straw, corn and broomcorn straw; The compound of alkali metal containing element and embodiment 2 are identical, no longer repeat.
For obtaining the silicate of required modulus, need the compound of alkali metal containing element and the part by weight of the silicon oxide in the biological material are carried out corresponding proportioning, because the modulus of main reaction product is about 1～2, so, calculate and demonstration with silicon oxide weight content in the straw of natural air drying 15～20%, for making full use of the compound of the higher alkali metal containing element of economic worth, the straw weight that adds can surpass the required equivalent of reaction, and promptly the preferred ratio of equivalent weight of the compound of straw and alkali metal containing element can be chosen between 3～10:1.
As select wheat straw waste, its silicon oxide-containing average out to～5%, therefore in order to make full use of the wheat straw thermal discharge to obtain especially metasilicate product of maximum silicate, when mixing the compound of wheat straw and alkali metal containing element, add thin silica powder, for example, part by weight is a wheat straw: sodium hydroxide: comparatively suitable during quartz=10:1.5:1.
Illustrate, the ashes after the biological material burning that is selected from straw, rice husk, wheat straw, corn and broomcorn straw can also be added in the described silicon containing biomass material, the element silicon and as the carbon of pyrotoxin completely of unreacted in the biological material ashes can be made full use of.
Embodiment 4
The mixture of resulting silicate and powder carbon after the complete thermo-cracking among the embodiment 1-3 is soluble in water, through dissolution filter, solid part can obtain pulverous charcoal mud, charcoal mud can become and is gac through further processing, liquid portion then contains a large amount of silicate materials, promptly can obtain the different hydrates of silicate through condensing crystal.Dissolving crystallized can in same pond, carrying out, preferred pond is shaped as long strip shape, be provided with one in pond central authorities and filter wall, the pond is divided into two, the product that mainly contains powder charcoal and silicate from stove is put in one of them pond, and another pond is the aqueous solution that only contains the silicate of diffusion in first pond.For making aqueous silicate solution in second pond reach the crystallization that hypersaturated state forms silicate cement compound (as nine water, the pentahydrate of water glass), will remain not molten solid silicate (also promptly reaching the purpose that the concentration that keeps silicate in first pond is higher than the concentration of silicate in second pond) in first pond and with respect to the raise temperature (the temperature tonsure is promptly arranged between first and second ponds) of solution in first pond of the solution temperature in second pond.Like this with regard to formed the saturation solubility of silicate in first pond be higher than silicate in second pond the saturation solubility that can have.Perhaps heat up simultaneously and promote to reduce solution temperature again after the silicate dissolving in two ponds, especially reduces the temperature in second pond so that crystallization mainly occurs in second pond, realizes the separation between silicate and the powder charcoal.
Inventive point of the present invention is in order to solve solid biomass material and reactant to be mixed, biological material can be carried out chemical reaction and obtain required chemical simultaneously directly not contacting with reactant under the special condition of handling through other when being subjected to thermo-cracking.Certainly; the reaction of technical chemistry that the present invention limited also is not limited to aforesaid decomposition, reduction, oxidation or reaction such as synthetic; other is applicable to the chemical reaction that carries out suitability for industrialized production of temperature range of the present invention; contact and finish chemical reaction so long as biological material is directly mixed with reactant when thermo-cracking, just should belong to protection scope of the present invention.
Claims (11)
1. a method of utilizing biological material to produce silicate and powder carbon is characterized in that, makes biological material directly contact mixing with reactant when being subjected to thermo-cracking, is heated to temperature of reaction and chemical reaction takes place.
2. the method for utilizing biological material to produce silicate and powder carbon as claimed in claim 1 is characterized in that the chemical reaction that is taken place is that principal product is the chemical reaction of alkalimetal silicate.
3. the method for utilizing biological material to produce silicate and powder carbon as claimed in claim 2 is characterized in that, described reactant comprises the compound and the thin silica powder of alkali metal containing element.
4. the method for utilizing biological material to produce silicate and powder carbon as claimed in claim 2 is characterized in that described biological material comprises not silicon containing biomass material, and reactant comprises the compound of siliceous mineral matter and alkali metal containing element.
5. the method for utilizing biological material to produce silicate and powder carbon as claimed in claim 4 is characterized in that described not silicon containing biomass material is selected from: weeds, sawdust and branch leaf; The compound of described alkali metal containing element is selected from: the oxyhydroxide of alkali metal containing element, basic metal inorganic acid salt and basic metal organic acid salt; Described siliceous mineral matter is selected from thin silica powder, diatomite and carclazyte.
6. the method for utilizing biological material to produce silicate and powder carbon as claimed in claim 2, it is characterized in that, described biological material is the silicon containing biomass material, and reactant comprises the compound by the alkali metal containing element of biological material silicon content equivalent proportioning.
7. the method for utilizing biological material to produce silicate and powder carbon as claimed in claim 6 is characterized in that described silicon containing biomass material is selected from: straw, rice husk, wheat straw, corn and broomcorn straw; The compound of described alkali metal containing element is selected from: the oxyhydroxide of alkali metal containing element, basic metal inorganic acid salt and basic metal organic acid salt.
8. the method for utilizing biological material to produce silicate and powder carbon as claimed in claim 7 is characterized in that the oxyhydroxide of described alkali metal containing element is selected from sodium hydroxide, potassium hydroxide and calcium hydroxide; The basic metal inorganic acid salt is selected from: yellow soda ash, salt of wormwood, sodium sulfate, vitriolate of tartar, hydrochloric acid sodium, hydrochloric acid potassium, sodium phosphate and potassiumphosphate; Alkaline metal organic salt acid is selected from: organic acid sodium salt and organic acid potassium salt.
9. the method for utilizing biological material to produce silicate and powder carbon as claimed in claim 7 is characterized in that, described silicon containing biomass material is added with the ashes after the biological material burning that is selected from straw, rice husk, wheat straw, corn and broomcorn straw.
10. the method for utilizing biological material to produce silicate and powder carbon as claimed in claim 2, it is characterized in that, described biological material comprises siliceous and not siliceous biological material, according to the average silicon content of biological material, add the compound and the thin silica powder of the alkali metal containing element of equivalent proportioning.
11. the method for utilizing biological material to produce silicate and powder carbon as claimed in claim 1 is characterized in that, described chemical reaction product carries out the step of filtering separation silicate and powder charcoal in two ponds of being cut apart by the filtration wall, and concrete steps comprise:
A, thermo-cracking and reaction product are put into the first pond internal heating dissolving;
B, decrease temperature crystalline goes out the hydrate of silicate in second pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101991139A CN101450803A (en) | 2007-12-08 | 2007-12-08 | Method for producing silicates and powder carbon by biomass material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101991139A CN101450803A (en) | 2007-12-08 | 2007-12-08 | Method for producing silicates and powder carbon by biomass material |
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| Publication Number | Publication Date |
|---|---|
| CN101450803A true CN101450803A (en) | 2009-06-10 |
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Family Applications (1)
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|---|---|---|---|
| CNA2007101991139A Pending CN101450803A (en) | 2007-12-08 | 2007-12-08 | Method for producing silicates and powder carbon by biomass material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105329877A (en) * | 2015-11-11 | 2016-02-17 | 安徽陆林农业科技开发有限公司 | Method for preparing flax stalk carbon by means of flax stalks |
| CN105329878A (en) * | 2015-11-11 | 2016-02-17 | 安徽陆林农业科技开发有限公司 | Method for preparing flax stem carbon through flax stems |
| CN108137331A (en) * | 2015-10-15 | 2018-06-08 | 罗地亚经营管理公司 | It is used to prepare the novel method of silicate and its is used to prepare the purposes of precipitated silica |
-
2007
- 2007-12-08 CN CNA2007101991139A patent/CN101450803A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108137331A (en) * | 2015-10-15 | 2018-06-08 | 罗地亚经营管理公司 | It is used to prepare the novel method of silicate and its is used to prepare the purposes of precipitated silica |
| CN105329877A (en) * | 2015-11-11 | 2016-02-17 | 安徽陆林农业科技开发有限公司 | Method for preparing flax stalk carbon by means of flax stalks |
| CN105329878A (en) * | 2015-11-11 | 2016-02-17 | 安徽陆林农业科技开发有限公司 | Method for preparing flax stem carbon through flax stems |
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