CN103754868A - Preparation method and application method of granular activated carbon for xylose decoloring - Google Patents
Preparation method and application method of granular activated carbon for xylose decoloring Download PDFInfo
- Publication number
- CN103754868A CN103754868A CN201310754565.4A CN201310754565A CN103754868A CN 103754868 A CN103754868 A CN 103754868A CN 201310754565 A CN201310754565 A CN 201310754565A CN 103754868 A CN103754868 A CN 103754868A
- Authority
- CN
- China
- Prior art keywords
- xylose
- active carbon
- granulated active
- phosphoric acid
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a preparation method and an application method of granular activated carbon for xylose decoloring, which belongs to the field of preparation methods and application methods of activated carbon. The preparation method comprises the following steps: (A) preparing raw materials, namely, weighing phosphoric acid method powder activated carbon made from saw dust, an acrylic emulsion and water according to a ratio of acrylic emulsion to phosphoric acid method powder activated carbon to water being (0.37-0.39):1:1; (B) mixing the raw materials, namely, mixing the weighed raw materials and sufficiently stirring till the granules are uniformly mixed; (C) forming granules, namely, extruding the uniformly mixed raw materials to form granules by using a pelletizing machine at the constant temperature of 90 DEG C, so as to make granules with the particle size of 2-5mm, cooling the granules to be 40-50 DEG C, and drying; (E) separating and cooling. The granular activated carbon prepared by using the method is good in adsorption property, high in strength, acid-alkali resisting, recyclable and reusable, the liquid adsorption amount of unit volume is equivalent to that of other granular activated carbons, and the production environment is improved.
Description
Technical field
The present invention relates to a kind of preparation method and using method of gac, particularly preparation method and the using method of granulated active carbon gac for a kind of Decoloration of Xylose.
Background technology
The conventional production method of Xylitol has chemical method or microbial method, these two kinds of methods are all by D-wood sugar or the hydrolysate reductive action that is rich in the hemicellulose of xylan being carried out to the production of Xylitol, then under High Temperature High Pressure, the pure wood sugar of catalytic hydrogenation.Except hydrolysis, be decolouring, scavenging process, therefore, in the production process of Xylitol, the decolouring of hydrolyzed solution occupies extremely important status.And in Xylose a large amount of pigments, nitrogen class material, phenolic compound, furfural and iron level, mostly be macromole saccharide compound.At present Decoloration of Xylose is a lot of with the manufacturing enterprise of granulated active carbon, these granulated active carbons by production technique classification, mainly contain four kinds: the one, directly coal dust is added to tar and asphalt moulding, then carries out charcoal activation and obtain ature of coal granulated active carbon; The 2nd, by hard shell, as coconut husk or apricot husk as raw material, through Physical charcoal, activation obtains active fruit shell carbon; The 3rd, wood chip and pharmaceutical chemicals are carried out to charcoal activation after as phosphoric acid plasticizing forming again and obtain wooden pressed active carbon; The 4th, the gac of excellent property is added to the binding agent extrusion molding dry granulated active carbon that obtains again; the first two kind method, starting material are in short supply, and the production cycle is long; production cost is high; because be the activation of Physical charcoal, belong to micropore prosperity, pore texture is less than normal; be less than pigment in the wood sugar being adsorbed and the molecular diameter of impurity; macromolecular saccharide compound is not almost had to decoloring ability, so its adsorptive power to wood sugar is poor, at Decoloration of Xylose field result of use extreme difference.Because only have the diameter that is slightly larger than impurity or obnoxious flavour molecule when the pore texture of gac, in the situation that can allow impurity or obnoxious flavour molecule enter completely, just can reach optimal adsorption effect, adsorption effect of activated carbon in water excessive or small holes gap structure is all undesirable.The proportion of the phosphoric acid method powdered carbon that the third method is made in all gacs is the lightest, unit specific surface area is maximum, aperture, pore volume prosperity, the molecule that has abundant large, medium and small aperture, decoloring ability is better than the first two kind, but intensity is bad and acid-fast alkali-proof ability and regeneration difficulty, the disposable use of gac is just scrapped, expend larger, and when throwing in powdered carbon, dust is many, work under bad environment, employee work intensity is large, and the 4th kind of method mainly used as artwork with the moulding of Physical powdered carbon.And above four kinds of gacs, its carbon atom plane layer that forms gac is arranged in " spiral shell laminate structure " in a jumble and at random, and is all to mutually combine with intermolecular forces, and therefore, wear-resistant degree, the compressive strength of gac are all very poor.
Present functional Xylitol is to be made by corresponding sugared hydrogenation, decolouring requires to reach lower residual concentration, should adopt molasses are had to the very gac of high absorption capacity, and the gac under relatively low residual concentration condition with enough loading capacities, not only macropore is abundant to need gac, and has enough large microporosity.Therefore a kind of granulated active carbon of moulding is needed in market badly, not only checks colors and have very high absorption capacity, can adapt to the requirement that severe acid or alkali environment and reprocessing cycle are used simultaneously.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of preparation method of granulated active carbon for the Decoloration of Xylose of enough loading capacities that has under Xylose pigment residual concentration condition; the Decoloration of Xylose of preparing by the method is abundant with granulated active carbon macropore; and there is enough large microporosity, and can reprocessing cycle use.
The present invention proposes the preparation method of granulated active carbon for a kind of Decoloration of Xylose, comprises the following steps:
(A) get the raw materials ready: will take phosphoric acid method powdered carbon that wood chip is raw material, ACRYLIC EMULSION, water by ACRYLIC EMULSION: phosphoric acid method powdered carbon: water=0.37～0.39: the weight ratio of 1: 1 takes, described ACRYLIC EMULSION water content is no more than 35%.
(B) batch mixing: also fully stir after the above-mentioned raw material taking is mixed, smash the particle forming in whipping process simultaneously, reach and mix;
(C) grain forming: under the weighing apparatus temperature of 90 ℃, by the material extruding moulding after mixing, make the particle of particle diameter 2～5mm by nodulizer, the granulated active carbon of moulding is cooled to 40～50 ℃ through the soft rolling of cooling drum of rotation;
(D) dry: by drying machine, cooled granulated active carbon is placed at the temperature of 150 ± 10 ℃ dry 30 minutes, dried granulated active carbon water ratio is 9%～10%;
(E) sorting is cooling: the granulated active carbon after making is sieved by particle diameter specification, and be cooled to below 40 ℃
Preferably, the phosphoric acid method powdered carbon that wood chip is raw material of take in described material preparation step is to adopt particle diameter >=0.4mm, the China fir wood chip of moisture≤15%, the powdered active carbon of producing afterwards by phosphate impregnation, charing, activation, recovery, oven dry, pulverizing, its granularity is 200mesh, methylene blue number >=160ml/g, iodine sorption value 1200%.
In described batch mixing step, adopt coulter type mixer that particle is beaten to essence and stirred, the drying machine adopting in described baking step is Vibratingfluidbeddrier.
The present invention also provides Decoloration of Xylose that a kind of preparation method according to claim 1 the makes using method with granulated active carbon, comprises the following steps:
(A1) once decolouring: be 75 ℃ by temperature, concentration is 6～10%, absorbancy is 0.410～0.489, transparence is that the phosphoric acid method powdered carbon that 5.19～5.65% Xylose and the wood chip of take are raw material takes by following weight ratio, phosphoric acid method powdered carbon: Xylose=1: (300～400), by 20～30 minutes, fully stir, allow phosphoric acid method powdered carbon fully adsorb the pigment in wood sugar, nitrogen class material, phenolic compound, furfural and iron ion, through high-pressure filteration, to obtain phosphoric acid method powdered carbon leaches, obtaining absorbancy is 0.28～0.38, transparence is 42.0～52.0% initial filter Xylose.
(B2) secondary decolourization: Decoloration of Xylose is taken by following mass ratio with granulated active carbon and described initial filter Xylose; granulated active carbon: initial filter Xylose=2.8～3.2: 100; the granulated active carbon taking is added to initial filter Xylose; 50min is placed in water-bath; granulated active carbon is leached, and obtaining absorbancy is the finished product Xylose that 0.095～0.189., transparence are 68.5～79.9%.
Preferably, the preparation method of the described Xylose in step that once decolours is, after corn cob is smashed, putting into sulfuric acid soaks, the weight proportion of described sulfuric acid and corn cob is 1: 4.5～5, soak time is 8～10 hours, again soak solution is placed at the high pressure of 0.6～0.7MPa, the temperature of 100～120 ℃ to boiling 8～9 hours, obtains Xylose.
The invention has the beneficial effects as follows: it is higher that granulated active carbon prepared by (1) present method has density, thermal conductivity, intensity, its intensity >=90%, simultaneously can be acidproof for a long time, and through overpickling, washing, dry, can reuse, regeneration efficiency is high, economizes on resources and production cost; (2) there is certain shape, and be easy to modulation and processing, input, produce and use procedure in no dust pollution, greatly improved production environment, the labour intensity that has reduced workman, does not have the pollutant emission problems such as waste water,waste gas and industrial residue, and clean environment firendly is pollution-free; (3) adsorptive capacity of good, the unit volume of absorption property is far above the granulated active carbon of other classifications; (4) storage, convenient transportation, be also easy to filtered and recycled simultaneously; (5) be not only applicable to various Sugarcane juice decolorizations, the decolouring that is also applicable to the industries such as monosodium glutamate, wine brewing is processed.Particularly in adsorption tanks or adsorption tower, use gac all to need granulated active carbon.(6) " phosphoric acid method powdered carbon, ACRYLIC EMULSION, water are pressed ACRYLIC EMULSION: phosphoric acid method powdered carbon: water=0.38: 1: 1 " this proportioning in step of the present invention (A), to take into account production control cost, improve the wear-resistant degree of powdered carbon, compressive strength and absorption property and the optimum proportion that adopts, pore texture hypertrophy due to powdered carbon, moulding process must reduce obstruction, the destruction to its pore texture as much as possible, reduce addition, the reduction forming pressure of cakingagent, thereby improve the specific surface area of pressed active carbon; And all very poor due to the wear-resistant degree of powdered carbon, compressive strength, the physical strength that improve pressed active carbon must increase again the addition of cakingagent, improve forming pressure.(7) Decoloration of Xylose of the present invention reaches approximately 0.28～0.38 by the absorbancy of the initial filter Xylose after once decolouring in the using method of granulated active carbon, transmittance approximately 42.0～52.0%, percent of decolourization is 55～62%, the finished product Xylose that absorbancy is 0.095～0.189, transparence is 68.5～79.9% that obtains through Decoloration of Xylose with the finished product Xylose after granulated active carbon secondary decolourization, adsorption effect obviously strengthens, and quality product significantly improves; (8) " granulated active carbon: initial filter Xylose=2.8～3.2: 100 " this proportioning in secondary decolourization in the using method of granulated active carbon for Decoloration of Xylose of the present invention; to take into account production control cost, improve decolorizing effect and the optimum proportion that adopts; if increase again on this basis granulated active carbon consumption; its decolorizing effect can be better, but production cost is higher.(9) in step (C) grain forming in preparation method of the present invention, the granulated active carbon of moulding is cooling through the soft rolling of cooling drum of rotation, can avoid granulated active carbon inter-adhesive, be beneficial to sizing.(10) adopt particle diameter >=0.4mm, the phosphoric acid method powdered carbon that the China fir wood chip of moisture≤15% is Raw material processing can, the main of gac is containing " C ", China fir wood chip is light and vegetables are loose, the prosperity of carbon molecule, and other wooden structures is tight, be applicable to making wood sugar macromolecules adsorption charcoal, and wood chip is utilization of waste material, namely utilize " saw wood ash ", production cost is lower.(11) ACRYLIC EMULSION refers to that chemical formula is the organic compound of C3H4O2, acrylicacidandesters class self or mix with other monomers after, can polymerization reaction take place generate homopolymer or multipolymer, serve as tackiness agent.Its composition is butyl acrylate, methyl methacrylate, methacrylic acid, alkylbenzene polyethers sodium sulfonate etc.The ACRYLIC EMULSION water content adopting in material preparation step is no more than 35%, is in order there to be desirable bonding effect, reaches the intensity of granulated active carbon, exceeds again and shuts gac hole.(12) in the preparation of wooden grain liquid, adopt sulfuric acid soaking corn, can make its speed change into grain, then high compressed steam, all moisture because of steam, corn cob and sulfuric acid, after boiling, obtain concentration and be 6～10% Xylose.
Applicant has also done following granulated active carbon Xylose decoloration performance has been tested:
Get 5 250mL Erlenmeyer flasks, each adds 50mL Xylose, here be the Xylose stoste of not processing through any decolouring, add respectively 1.00,2.00,3.00,4.00, the pressed active carbon of 5.00g, in 70 ℃ of water-baths, place 50min, filter, under 420nm, measure absorbance A, transparence T, calculate percent of decolourization η:
Absorbancy refers to that light passes through the logarithm of incident intensity before solution or a certain material and this light transmitted intensity ratio after by solution or material, affect it because have solvent, concentration, temperature etc., absorbance A=abc, wherein a is specific absorbance, the L/ of unit (gcm), b is liquid layer thickness (being generally the thickness of cuvette), the cm of unit, c is strength of solution, the g/L of unit; According to the relation formula of transparence T and absorbance A, be A=-1gT, percent of decolourization refers to by processing front transparence T
a, process after transparence, T
bcalculate and obtain, be i.e. percent of decolourization=[1g (1-T
a)/1g (1-T
b)] * 100%.
In a word, the present invention has improved the bad present situation of wood sugar liquid phase decolorizing effect, and can adapt to the requirement of severe acid or alkali environment and reprocessing cycle use; Xylose is after secondary decolourization, and color and luster aufhellung, is become faint yellowly from brown, and its transmittance increases substantially.
Embodiment
Embodiment mono-
The present embodiment proposes the preparation method of granulated active carbon for a kind of Decoloration of Xylose, comprises the following steps:
(A) get the raw materials ready: will take phosphoric acid method powdered carbon that wood chip is raw material, ACRYLIC EMULSION, water by ACRYLIC EMULSION: phosphoric acid method powdered carbon: water=0.375: the weight ratio of 1: 1 takes, described ACRYLIC EMULSION water content 34%.
(B) batch mixing: also fully stir after the above-mentioned raw material taking is mixed, smash the particle forming in whipping process simultaneously, reach and mix;
(C) grain forming: under the weighing apparatus temperature of 90 ℃, by the material extruding moulding after mixing, make the particle of particle diameter 3mm by nodulizer, the granulated active carbon of moulding is cooled to 40～50 ℃ through the soft rolling of cooling drum of rotation;
(D) dry: by drying machine, cooled granulated active carbon is placed at the temperature of 145 ℃ dry 30 minutes, dried granulated active carbon water ratio is 10%;
(E) sorting is cooling: the granulated active carbon after making is sieved by particle diameter specification, and be cooled to below 40 ℃.
The phosphoric acid method powdered carbon that wood chip is raw material of take in described material preparation step is to adopt particle diameter >=0.4mm, the China fir wood chip of moisture≤15%, the powdered active carbon of producing afterwards by phosphate impregnation, charing, activation, recovery, oven dry, pulverizing, its granularity is 200mesh, methylene blue number >=160ml/g, iodine sorption value 1200%.In described batch mixing step, adopt coulter type mixer that particle is beaten to essence and stirred, the drying machine adopting in described baking step is Vibratingfluidbeddrier.
The present embodiment also proposes the using method of granulated active carbon for Decoloration of Xylose that a kind of above-mentioned preparation method makes, comprises the following steps:
(A1) once decolouring: be 75 ℃ by temperature, concentration is 7%, absorbancy is 0.410～0.489, transparence is that the phosphoric acid method powdered carbon that 5.19～5.65% Xylose and the wood chip of take are raw material takes by following weight ratio, phosphoric acid method powdered carbon: Xylose=1: 335, by 20～30 minutes, fully stir, allow phosphoric acid method powdered carbon fully adsorb the pigment in wood sugar, nitrogen class material, phenolic compound, furfural and iron ion, through high-pressure filteration, to obtain phosphoric acid method powdered carbon leaches, obtaining absorbancy is 0.28～0.38, transparence is 42.0～52.0% initial filter Xylose.
(B2) secondary decolourization: Decoloration of Xylose is taken by following mass ratio with granulated active carbon and described initial filter Xylose; granulated active carbon: initial filter Xylose=2.85: 100; the granulated active carbon taking is added to initial filter Xylose; 50min is placed in water-bath; granulated active carbon is leached, and obtaining absorbancy is the finished product Xylose that 0.095～0.189., transparence are 68.5～79.9%.
The preparation method of the described Xylose in step that once decolours is, after corn cob is smashed, putting into sulfuric acid soaks, the weight proportion of described sulfuric acid and corn cob is 1: 4.6, soak time is 8.5 hours, again soak solution is placed at the high pressure of 0.6～0.7MPa, the temperature of 100～120 ℃ to boiling 8～9 hours, obtains Xylose.
Embodiment bis-
The present embodiment proposes the preparation method of granulated active carbon for a kind of Decoloration of Xylose, comprises the following steps:
(A) get the raw materials ready: will take phosphoric acid method powdered carbon that wood chip is raw material, ACRYLIC EMULSION, water by ACRYLIC EMULSION: phosphoric acid method powdered carbon: water=0.38: the weight ratio of 1: 1 takes, described ACRYLIC EMULSION water content 33%.
(B) batch mixing: also fully stir after the above-mentioned raw material taking is mixed, smash the particle forming in whipping process simultaneously, reach and mix;
(C) grain forming: under the weighing apparatus temperature of 90 ℃, by the material extruding moulding after mixing, make the particle of particle diameter 4mm by nodulizer, the granulated active carbon of moulding is cooled to 40～50 ℃ through the soft rolling of cooling drum of rotation;
(D) dry: by drying machine, cooled granulated active carbon is placed at the temperature of 150 ℃ dry 30 minutes, dried granulated active carbon water ratio is 9.5%;
(E) sorting is cooling: the granulated active carbon after making is sieved by particle diameter specification, and be cooled to below 40 ℃
The phosphoric acid method powdered carbon that wood chip is raw material of take in described material preparation step is to adopt particle diameter >=0.4mm, the China fir wood chip of moisture≤15%, by the powdered active carbon of producing afterwards by phosphate impregnation, charing, activation, recovery, oven dry, pulverizing, its granularity is 200mesh, methylene blue number >=160ml/g, iodine sorption value 1200%.In described batch mixing step, adopt coulter type mixer that particle is beaten to essence and stirred, the drying machine adopting in described baking step is Vibratingfluidbeddrier.
The present embodiment also proposes the using method of granulated active carbon for Decoloration of Xylose that a kind of above-mentioned preparation method makes, comprises the following steps:
(A1) once decolouring: be 75 ℃ by temperature, concentration is 8%, absorbancy is 0.410～0.489, transparence is that the phosphoric acid method powdered carbon that 5.19～5.65% Xylose and the wood chip of take are raw material takes by following weight ratio, phosphoric acid method powdered carbon: Xylose=1: 357, by 20～30 minutes, fully stir, allow phosphoric acid method powdered carbon fully adsorb the pigment in wood sugar, nitrogen class material, phenolic compound, furfural and iron ion, through high-pressure filteration, to obtain phosphoric acid method powdered carbon leaches, obtaining absorbancy is 0.28～0.38, transparence is 42.0～52.0% initial filter Xylose.
(B2) secondary decolourization: Decoloration of Xylose is taken by following mass ratio with granulated active carbon and described initial filter Xylose; granulated active carbon: initial filter Xylose=3: 100; the granulated active carbon taking is added to initial filter Xylose; 50min is placed in water-bath; granulated active carbon is leached, and obtaining absorbancy is the finished product Xylose that 0.095～0.189., transparence are 68.5～79.9%.
The preparation method of the described Xylose in step that once decolours is, after corn cob is smashed, putting into sulfuric acid soaks, the weight proportion of described sulfuric acid and corn cob is 1: 4.75, soak time is 9 hours, again soak solution is placed at the high pressure of 0.6～0.7MPa, the temperature of 100～120 ℃ to boiling 8～9 hours, obtains Xylose.
Embodiment tri-
The present embodiment proposes the preparation method of granulated active carbon for a kind of Decoloration of Xylose, comprises the following steps:
(A) get the raw materials ready: will take phosphoric acid method powdered carbon that wood chip is raw material, ACRYLIC EMULSION, water by ACRYLIC EMULSION: phosphoric acid method powdered carbon: water=0.385: the weight ratio of 1: 1 takes, described ACRYLIC EMULSION water content 32.5%.
(B) batch mixing: also fully stir after the above-mentioned raw material taking is mixed, smash the particle forming in whipping process simultaneously, reach and mix;
(C) grain forming: under the weighing apparatus temperature of 90 ℃, by the material extruding moulding after mixing, make the particle of particle diameter 4.5mm by nodulizer, the granulated active carbon of moulding is cooled to 40～50 ℃ through the soft rolling of cooling drum of rotation;
(D) dry: by drying machine, cooled granulated active carbon is placed at the temperature of 158 ℃ dry 30 minutes, dried granulated active carbon water ratio is 9.5%;
(E) sorting is cooling: the granulated active carbon after making is sieved by particle diameter specification, and be cooled to below 40 ℃
The phosphoric acid method powdered carbon that wood chip is raw material of take in described material preparation step is to adopt particle diameter >=0.4mm, the China fir wood chip of moisture≤15%, the powdered active carbon of producing afterwards by phosphate impregnation, charing, activation, recovery, oven dry, pulverizing, its granularity is 200mesh, methylene blue number >=160ml/g, iodine sorption value 1200%.In described batch mixing step, adopt coulter type mixer that particle is beaten to essence and stirred, the drying machine adopting in described baking step is Vibratingfluidbeddrier.
The present embodiment also proposes the using method of granulated active carbon for Decoloration of Xylose that a kind of above-mentioned preparation method makes, comprises the following steps:
(A1) once decolouring: be 75 ℃ by temperature, concentration is 9%, absorbancy is 0.410～0.489, transparence is that the phosphoric acid method powdered carbon that 5.19～5.65% Xylose and the wood chip of take are raw material takes by following weight ratio, phosphoric acid method powdered carbon: Xylose=1: 385, by 20～30 minutes, fully stir, allow phosphoric acid method powdered carbon fully adsorb the pigment in wood sugar, nitrogen class material, phenolic compound, furfural and iron ion, through high-pressure filteration, to obtain phosphoric acid method powdered carbon leaches, obtaining absorbancy is 0.28～0.38, transparence is 42.0～52.0% initial filter Xylose.
(B2) secondary decolourization: Decoloration of Xylose is taken by following mass ratio with granulated active carbon and described initial filter Xylose; granulated active carbon: initial filter Xylose=3.1: 100; the granulated active carbon taking is added to initial filter Xylose; 50min is placed in water-bath; granulated active carbon is leached, and obtaining absorbancy is the finished product Xylose that 0.095～0.189., transparence are 68.5～79.9%.
The preparation method of the described Xylose in step that once decolours is, after corn cob is smashed, putting into sulfuric acid soaks, the weight proportion of described sulfuric acid and corn cob is 1: 4.9, soak time is 9.5 hours, again soak solution is placed at the high pressure of 0.6～0.7MPa, the temperature of 100～120 ℃ to boiling 8～9 hours, obtains Xylose.
Claims (5)
1. a preparation method for granulated active carbon for Decoloration of Xylose, is characterized in that, comprises the following steps:
(A) get the raw materials ready: will take phosphoric acid method powdered carbon that wood chip is raw material, ACRYLIC EMULSION, water by ACRYLIC EMULSION: phosphoric acid method powdered carbon: water=0.37～0.39: the weight ratio of 1: 1 takes, described ACRYLIC EMULSION water content is no more than 35%.
(B) batch mixing: also fully stir after the above-mentioned raw material taking is mixed, smash the particle forming in whipping process simultaneously, reach and mix;
(C) grain forming: under the weighing apparatus temperature of 90 ℃, by the material extruding moulding after mixing, make the particle of particle diameter 2～5mm by nodulizer, the granulated active carbon of moulding is cooled to 40～50 ℃ through the soft rolling of cooling drum of rotation;
(D) dry: by drying machine, cooled granulated active carbon is placed at the temperature of 150 ± 10 ℃ dry 30 minutes, dried granulated active carbon water ratio is 9%～10%;
(E) sorting is cooling: the granulated active carbon after making is sieved by particle diameter specification, and be cooled to below 40 ℃.
2. a using method for granulated active carbon for the Decoloration of Xylose that preparation method makes according to claim 1, is characterized in that, comprises the following steps:
(A1) once decolouring: be 75 ℃ by temperature, concentration is 6～10%, absorbancy is 0.410～0.489, transparence is that the phosphoric acid method powdered carbon that 5.19～5.65% Xylose and the wood chip of take are raw material takes by following weight ratio, phosphoric acid method powdered carbon: Xylose=1: (300～400), by 20～30 minutes, fully stir, allow phosphoric acid method powdered carbon fully adsorb the pigment in wood sugar, nitrogen class material, phenolic compound, furfural and iron ion, through high-pressure filteration, to obtain phosphoric acid method powdered carbon leaches, obtaining absorbancy is 0.28～0.38, transparence is 42.0～52.0% initial filter Xylose,
(B2) secondary decolourization: Decoloration of Xylose is taken by following mass ratio with granulated active carbon and described initial filter Xylose; granulated active carbon: initial filter Xylose=2.8～3.2: 100; the granulated active carbon taking is added to initial filter Xylose; 50min is placed in water-bath; granulated active carbon is leached, and obtaining absorbancy is the finished product Xylose that 0.095～0.189., transparence are 68.5～79.9%.
3. the preparation method of granulated active carbon for Decoloration of Xylose according to claim 1; it is characterized in that; the phosphoric acid method powdered carbon that wood chip is raw material of take in described material preparation step is to adopt particle diameter >=0.4mm; the China fir wood chip of moisture≤15%; the powdered active carbon of producing afterwards by phosphate impregnation, charing, activation, recovery, oven dry, pulverizing; its granularity is 200mesh, methylene blue number >=160ml/g, iodine sorption value 1200%.
4. the preparation method of granulated active carbon for Decoloration of Xylose according to claim 3; it is characterized in that; in described batch mixing step, adopt coulter type mixer that particle is beaten to essence and stirred, the drying machine adopting in described baking step is Vibratingfluidbeddrier.
5. the using method of granulated active carbon for Decoloration of Xylose according to claim 2; it is characterized in that; the preparation method of the described Xylose in step that once decolours is; after corn cob is smashed, putting into sulfuric acid soaks; the weight proportion of described sulfuric acid and corn cob is 1: 4.5～5; soak time is 8～10 hours, then soak solution is placed at the high pressure of 0.6～0.7MPa, the temperature of 100～120 ℃ to boiling 8～9 hours, obtains Xylose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310754565.4A CN103754868B (en) | 2013-12-25 | 2013-12-25 | The preparation method of Decoloration of Xylose granulated active carbon and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310754565.4A CN103754868B (en) | 2013-12-25 | 2013-12-25 | The preparation method of Decoloration of Xylose granulated active carbon and using method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103754868A true CN103754868A (en) | 2014-04-30 |
| CN103754868B CN103754868B (en) | 2015-11-25 |
Family
ID=50522237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310754565.4A Active CN103754868B (en) | 2013-12-25 | 2013-12-25 | The preparation method of Decoloration of Xylose granulated active carbon and using method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103754868B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000432A (en) * | 2016-05-24 | 2016-10-12 | 湖南宇洁活性炭环保科技有限公司 | Wooden granular active carbon loaded with catalyst and used for purifying air and preparation method thereof |
| CN106000376A (en) * | 2016-05-24 | 2016-10-12 | 湖南宇洁活性炭环保科技有限公司 | Woody granular activated carbon used for supporting catalyst and preparation method thereof |
| CN107433183A (en) * | 2017-09-19 | 2017-12-05 | 江苏科力特环保科技有限公司 | A kind of decolouring granular activated carbon |
| CN107792853A (en) * | 2017-11-28 | 2018-03-13 | 福建省鑫森炭业股份有限公司 | A kind of high intensity granular activated carbon for liquid phase desorption and preparation method thereof |
| CN114538435A (en) * | 2022-03-14 | 2022-05-27 | 桂东县湘浙活性炭有限公司 | Preparation method of plant activated carbon for oil processing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060154815A1 (en) * | 2005-01-12 | 2006-07-13 | Kuraray Chemical Co., Ltd. | Pelletized activated carbon and production method for the same |
| CN101474550A (en) * | 2007-12-31 | 2009-07-08 | 承德绿世界活性炭有限公司 | Indoor environment friendly decorating material |
| JP2010222163A (en) * | 2009-03-23 | 2010-10-07 | Kuraray Chem Corp | High functional granulated carbon and method for manufacturing the same |
| CN103409565A (en) * | 2013-07-26 | 2013-11-27 | 山东福田药业有限公司 | Preparation technology of xylose |
-
2013
- 2013-12-25 CN CN201310754565.4A patent/CN103754868B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060154815A1 (en) * | 2005-01-12 | 2006-07-13 | Kuraray Chemical Co., Ltd. | Pelletized activated carbon and production method for the same |
| CN101474550A (en) * | 2007-12-31 | 2009-07-08 | 承德绿世界活性炭有限公司 | Indoor environment friendly decorating material |
| JP2010222163A (en) * | 2009-03-23 | 2010-10-07 | Kuraray Chem Corp | High functional granulated carbon and method for manufacturing the same |
| CN103409565A (en) * | 2013-07-26 | 2013-11-27 | 山东福田药业有限公司 | Preparation technology of xylose |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000432A (en) * | 2016-05-24 | 2016-10-12 | 湖南宇洁活性炭环保科技有限公司 | Wooden granular active carbon loaded with catalyst and used for purifying air and preparation method thereof |
| CN106000376A (en) * | 2016-05-24 | 2016-10-12 | 湖南宇洁活性炭环保科技有限公司 | Woody granular activated carbon used for supporting catalyst and preparation method thereof |
| CN106000432B (en) * | 2016-05-24 | 2019-04-12 | 湖南宇洁活性炭环保科技有限公司 | Wood substance grain active carbon of supported catalyst for air cleaning and preparation method thereof |
| CN107433183A (en) * | 2017-09-19 | 2017-12-05 | 江苏科力特环保科技有限公司 | A kind of decolouring granular activated carbon |
| CN107792853A (en) * | 2017-11-28 | 2018-03-13 | 福建省鑫森炭业股份有限公司 | A kind of high intensity granular activated carbon for liquid phase desorption and preparation method thereof |
| CN114538435A (en) * | 2022-03-14 | 2022-05-27 | 桂东县湘浙活性炭有限公司 | Preparation method of plant activated carbon for oil processing |
| CN114538435B (en) * | 2022-03-14 | 2023-09-19 | 桂东县湘浙活性炭有限公司 | Preparation method of plant active carbon for oil processing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103754868B (en) | 2015-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100497170C (en) | Granule decoloration active carbon and preparation method thereof | |
| CN103754868B (en) | The preparation method of Decoloration of Xylose granulated active carbon and using method | |
| CN106000303B (en) | It is a kind of using pomelo peel preparation charcoal, preparation method and applications | |
| CN100584752C (en) | Water purification active carbon prepared from vegetal castoff and preparation method thereof | |
| CN1272242C (en) | Active carbon producing process with mixed stalk material | |
| CN103121682B (en) | Method for preparing high-specific-surface-area activated carbon from tobacco stalks | |
| CN1318295C (en) | Method of making special active carbon for capacitor using hard fruit shell | |
| CN103265030B (en) | Preparation method for tea shell active carbon | |
| CN103011155A (en) | Method for preparing activated carbon by utilizing camellia oleifera shells | |
| CN104724703A (en) | Method for preparing adsorptive activated carbon from Musaceae plants | |
| CN101121516A (en) | Multifunctional active carbon | |
| CN1301214C (en) | Process for preparing active carbon using tea processing refuse as raw material | |
| CN105293491A (en) | KOH solid activated active carbon preparation and forming method | |
| CN106699612B (en) | A kind of method that granular activated carbon is used to decolourize to clean | |
| CN105399872A (en) | Method for using pennisetum hydridum lignin for preparation of active carbon and application of active carbon | |
| CN104163427A (en) | Method utilizing melt salt activation to prepare active carbon | |
| CN1837039A (en) | Process for producing active carbon by using straw blend materials | |
| CN112010302A (en) | Method for preparing hierarchical porous phosphorus-doped carbon material from biomass | |
| CN103964432A (en) | Method for preparing granular activated carbon from lignin | |
| CN103303917B (en) | Activated carbon and preparation process thereof | |
| CN103787330B (en) | A kind of almond shell, the pinecone, rice husk prepare the method for gac | |
| CN103816866A (en) | Method for preparing activated carbon by using rice hulls, corn stalks and coconut shells | |
| CN102502628A (en) | Preparation method of granular activated carbon by chemical activation | |
| CN104743556A (en) | Powder active carbon prepared by using turf as raw material and preparation method of powder active carbon | |
| CN103785356A (en) | Method for preparing activated carbon from pomelo peels, hemp stems and walnut shells |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |