CN104927408A - Carbon black granulation binder, method for preparing same and application of carbon black granulation binder - Google Patents
Carbon black granulation binder, method for preparing same and application of carbon black granulation binder Download PDFInfo
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- CN104927408A CN104927408A CN201510357272.1A CN201510357272A CN104927408A CN 104927408 A CN104927408 A CN 104927408A CN 201510357272 A CN201510357272 A CN 201510357272A CN 104927408 A CN104927408 A CN 104927408A
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Abstract
The invention provides a carbon black granulation binder, a method for preparing the same and application of the carbon black granulation binder. Lignosulfonate prepared from sugar liquor is filtered by membranes to obtain the carbon black granulation binder. The carbon black granulation binder, the method and the application have the advantages that the molecular weights of the membranes for filtering the lignosulfonate range from 800 daltons to 1000 daltons under the control, the carbon black granulation binder is applied to preparing granular carbon black, and accordingly the obtained carbon black not only is low in fine powder content, but also is high in firmness, namely, the hardness.
Description
Technical field
The present invention relates to a kind of pelletizing of carbon black binding agent and its preparation method and application.
Background technology
Since there is filler reinforcement effect from discovery carbon black to rubber, off-colour industry obtains and develops rapidly, and developing rapidly along with rubber industry, tyre industry is in the period transformed to radial-ply tyre direction by bias tire, the introducing of a large amount of radial-ply tyre production line, have higher requirement to carbon black, this production line requires that carbon black has high fastness, and fine powder content is low.
Pelletizing of carbon black comprises non-slurry pelletizing and wet granulation, carbon black non-slurry pelletizing passes in rotary drum granulator by powdery carbon black, roll along certain vector locus, powdery carbon black is through compression exhaust, mutually collision, contact, particle is formed under the effect of intermolecular forces, and grow up gradually, be pelletizing finished product; But the diameter of non-slurry pelletizing carbon black pellet is little, and fine powder content is high, particle fastness is low; Wet granulation be by very thin carbon black and be applicable to wet granulation again containing the aqueous solution of a certain proportion of binding agent tablets press in through stirring the high speed rotating effect of tooth, carbon black is mixed, formation dustless carbon black with granulation water; In the process of wet granulation, in order to reduce the fastness of its raising particle of fine powder content, need to select suitable pelletizing of carbon black binding agent.
Summary of the invention
In view of this, technical problem to be solved by this invention is to provide a kind of pelletizing of carbon black binding agent, and pelletizing of carbon black binding agent provided by the invention is applied to the granulation of carbon black, and the dustless carbon black obtained is not only strong solid high, and fine powder content is low.
The invention provides a kind of pelletizing of carbon black binding agent, obtained by membrane filtration by the sulfonated lignin prepared by liquid glucose;
The molecular weight of the film that described membrane filtration uses is 800 ~ 1000 dalton.
Preferably, the film that described membrane filtration uses is hollow-fibre membrane or nanofiltration membrane.
Preferably, the temperature of described membrane filtration is 30 DEG C ~ 50 DEG C.
Preferably, the lignosulfonic acid salt brine solution of the sulfonated lignin of described membrane filtration to be solid content be 2wt% ~ 20wt%.
Preferably, also comprise concentrated and spraying dry after described membrane filtration and obtain pelletizing of carbon black binding agent.
Preferably, described concentrated temperature is 30 DEG C ~ 50 DEG C.
Preferably, lignosulfonic acid salt brine solution is concentrated into solid content by described simmer down to is 40wt% ~ 60wt%.
Preferably, described liquid glucose prepares the process of sulfonated lignin and is:
Liquid glucose is obtained sulfonated lignin by chromatographic separation;
The solid content of described liquid glucose is 35wt% ~ 65wt%, and the pH of liquid glucose is 4 ~ 7, and in liquid glucose, reducing sugar is greater than 16%.
Preferably, described liquid glucose is prepared in accordance with the following methods:
By the material containing xylogen and Compound-acid hybrid reaction, obtain liquid glucose;
Described Compound-acid comprises sulfurous gas, non-oxidizing acid and sulphite,
Described non-oxidizing acid is one or more in phosphoric acid, sulfuric acid, oxalic acid and acetic acid,
Described sulphite is one or more in S-WAT, potassium sulfite, magnesium sulfite and calcium sulfite.
Present invention also offers a kind of dustless carbon black, obtained by pelletizing of carbon black binding agent provided by the invention, water and carbon black mixing granulation.
Compared with prior art, the invention provides a kind of pelletizing of carbon black binding agent, obtained by membrane filtration by the sulfonated lignin prepared by liquid glucose; And be 800 ~ 1000 dalton by the molecular weight controlling the film that described membrane filtration uses, not only ash content is low to make the carbon black prepared of the pelletizing of carbon black binding agent application dustless carbon black obtained, purity is high, and fine powder content is low, it is strong that namely hardness is high admittedly, experimental result shows: the ash content 0.2% of the carbon black that pelletizing of carbon black binding agent provided by the invention prepares, and fine powder content is 5%, tensile strength 1.0MPa.
Embodiment
The invention provides a kind of pelletizing of carbon black binding agent, obtained by membrane filtration by the sulfonated lignin prepared by liquid glucose;
The molecular weight of the film that described membrane filtration uses is 800 ~ 1000 dalton.
According to the present invention, the sulfonated lignin prepared by liquid glucose are obtained pelletizing of carbon black binding agent by membrane filtration by the present invention, and wherein, the molecular weight of the film that described membrane filtration uses is 800 ~ 1000 dalton; The film that described membrane filtration uses is preferably hollow-fibre membrane or nanofiltration membrane; The sulfonated lignin prepared by liquid glucose of described membrane filtration are preferably the lignosulfonic acid salt brine solution that solid content is 2wt% ~ 20wt%, be more preferably the lignosulfonic acid salt brine solution of 5wt% ~ 15wt%, most preferably be the lignosulfonic acid salt brine solution of 8wt% ~ 10wt%; The temperature of described membrane filtration is preferably 30 DEG C ~ 50 DEG C, is more preferably 35 DEG C ~ 45 DEG C, most preferably is 40 DEG C ~ 43 DEG C.
The present invention is also preferred to be concentrated the lignosulfonic acid salt brine solution after membrane filtration, obtains the lignosulfonic acid salt brine solution that solid content is 40wt% ~ 60wt%, is more preferably the lignosulfonic acid salt brine solution of 45wt% ~ 55wt%; Concentrated temperature is preferably 60 DEG C ~ 90 DEG C, is more preferably 70 DEG C ~ 80 DEG C.
Solution after concentrated is preferably also passed through spraying dry by the present invention, obtain pelletizing of carbon black binding agent, spray-dired method of the present invention is not particularly limited, spray drying process well known in the art, described spray-dired inlet temperature is preferably 260 DEG C ~ 280 DEG C, and air outlet temperature is preferably 80 DEG C ~ 100 DEG C.
The index of the pelletizing of carbon black binding agent that the present invention obtains is: moisture is less than 7, and pH value is 4 ~ 6, and reducing sugar content (accounting for butt) is for being less than or equal to 14wt% ~ 19wt%, and water-insoluble (accounting for butt) is for being less than or equal to 0.6wt%.
The process that described liquid glucose prepares sulfonated lignin is preferably:
Liquid glucose is obtained sulfonated lignin by chromatographic separation;
The solid content of described liquid glucose is 35wt% ~ 65wt%, and the pH of liquid glucose is 4 ~ 7, and in liquid glucose, reducing sugar is greater than 16%.
According to the present invention, the solid content of described liquid glucose is preferably wt40 ~ 50wt%; Described used in chromatograph resin is preferably one or more in sodium form resin, magnesium types resin, calcium type resin and potassium type resin; The temperature of described separation is preferably 30 ~ 90 DEG C, is more preferably 50 ~ 80 DEG C, and described velocity of separation is preferably 1 ~ 10m/h, is more preferably 2 ~ 6m/h; Described eluent is preferably distilled water.
In order to can better the sulfonated lignin in liquid glucose and wood sugar and other sugar be left, during liquid glucose preferably also carries out by the present invention before chromatographic separation and and filter, the reagent of described neutralization is preferably one or more in sodium hydroxide, magnesium oxide, calcium oxide and potassium hydroxide, the temperature of described neutralization reaction is preferably 30 ~ 80 DEG C, be more preferably 40 ~ 60 DEG C, most preferably be 45 ~ 55 DEG C; After described neutralization reaction, the pH of solution is to being preferably 2 ~ 6, is more preferably 3 ~ 5, most preferably is 4 ~ 5; The mode of described filtration is preferably precoating and drainage, is more preferably Plate Filtration or the filtration of candle formula; Described precoating paint is preferably one or more in diatomite, waste active carbon, perlite and xylose residue, is more preferably one or both in diatomite and waste active carbon; Described precoating amount is preferably 0 ~ 3kg/m
2, be more preferably 0.5 ~ 1.5kg/m
2; Described flocculating aids is one or more in diatomite, waste active carbon and perlite, is more preferably one or both in diatomite and waste active carbon; The temperature of described filtration is preferably 30 ~ 80 DEG C, is more preferably 40 ~ 60 DEG C, most preferably is 45 ~ 55 DEG C; The number of times of described filtration is preferably 1 ~ 4 time, is more preferably 2 ~ 3 times.
Described liquid glucose is preferably prepared in accordance with the following methods:
By the material containing xylogen and Compound-acid hybrid reaction, obtain liquid glucose;
Described Compound-acid comprises sulfurous gas, non-oxidizing acid and sulphite,
Described non-oxidizing acid is one or more in phosphoric acid, sulfuric acid, oxalic acid and acetic acid,
Described sulphite is one or more in S-WAT, potassium sulfite, magnesium sulfite and calcium sulfite.
Concrete, the present invention does not have particular requirement to the described material containing xylogen, is preferably selected from one or more in corn cob, reed, beans bar and cotton stalk; Be more preferably corn cob or reed; Most preferably be corn cob.Raw material of the present invention is preferably through pulverizing, and the order number that the present invention obtains for the instrument pulverized or pulverizing does not limit, the instrument that acidolysis well known to those skilled in the art is pulverized and order number.
Compound-acid described in the present invention comprises sulfurous gas, non-oxidizing acid and sulphite, and wherein, described non-oxidizing acid is one or more in phosphoric acid, sulfuric acid, oxalic acid and acetic acid; Preferably non-oxidizing acid is two or more in phosphoric acid, sulfuric acid, oxalic acid and acetic acid; Described sulphite is one or more in S-WAT, potassium sulfite, magnesium sulfite and calcium sulfite; Be preferably as two or more in S-WAT, potassium sulfite, magnesium sulfite and calcium sulfite; In described Compound-acid, the mass ratio of sulfurous gas, non-oxidizing acid is preferably (10 ~ 95): (2 ~ 50), be more preferably (50 ~ 90): (5 ~ 30), most preferably be (80 ~ 90): (6 ~ 20); The mol ratio of described sulfurous gas and sulphite is for being preferably (10 ~ 95): (0 ~ 10), be more preferably (50 ~ 90): (1 ~ 7), most preferably be (80 ~ 90): (2 ~ 3).
In the present invention, the described material containing xylogen mixes with Compound-acid and carries out acidolysis reaction, obtains liquid glucose; Wherein, be describedly preferably 1:(0.01 ~ 0.1 containing the material of xylogen and the mass ratio of Compound-acid), be more preferably 1:(0.03 ~ 0.08), most preferably be 1:(0.03 ~ 0.06); In order to make reaction better carry out, the content (i.e. solid content) adding water in mixed solution and make the solid in reaction system is also 2 ~ 100wt% by the present invention, is more preferably 4 ~ 90wt%, most preferably is 5.5 ~ 85wt%; The pressure of described reaction is preferably 0.2 ~ 1MPa, is more preferably 0.4 ~ 0.8MPa, most preferably is 0.5 ~ 0.7MPa.
In the present invention, said solid content refers to the mass ratio of reaction raw materials in reaction system and reaction solution (comprising reaction raw materials and solvent).
Present invention also offers a kind of dustless carbon black, obtained by pelletizing of carbon black binding agent provided by the invention, water and carbon black mixing granulation.
The invention provides a kind of pelletizing of carbon black binding agent, obtained by membrane filtration by the sulfonated lignin prepared by liquid glucose; And be 800 ~ 1000 dalton by the molecular weight controlling the film that described membrane filtration uses, not only fine powder content is low to make the carbon black prepared of the pelletizing of carbon black binding agent application dustless carbon black obtained, and strong be that hardness is high admittedly; And the wide material sources of binding agent, preparation cost is low.
Technical scheme below in conjunction with the embodiment of the present invention is clearly and completely described, and obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
100g corn cob is pulverized, add 8g sulfurous acid, 1.4g phosphoric acid, 0.5g S-WAT 140 DEG C, be hydrolyzed under 05Mpa, after hydrolysis, solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of four times, after solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of twice, obtains xylose residue and liquid glucose after solid-liquid separation.
The liquid glucose obtained is condensed into the solution that solid content is 45wt%, then at 50 DEG C of sedimentation 48h, adds sodium hydroxide at 55 DEG C and carry out neutralization reaction, obtain the solution that pH value is 5.
The solution being 5 by the pH obtained carries out Plate Filtration 2 times, and the temperature of filtration is 50 DEG C, and the precoating paint of Plate Filtration is diatomite and waste active carbon, and precoating amount is 1kg/m
2, flocculating aids is diatomite, and add-on is 0.6% of liquid glucose quality, obtains the liquid glucose after filtering.
By the liquid glucose after filtration through chromatographic separation, obtain sodium lignosulfonate, wherein, the temperature of chromatographic separation is 70 DEG C, and the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
By the mixed solution that the sodium lignosulfonate 20g obtained and 980g water mix, be 800 daltonian hollow-fibre membranes by membrane molecule amount under 40 DEG C of conditions, it is 45wt% that the filtrate obtained 70 DEG C is concentrated into solid content, concentrated solution is passed through spraying dry, spray-dired inlet temperature is 260 DEG C, air outlet temperature is 80 DEG C, obtains pelletizing of carbon black binding agent.
By the pelletizing of carbon black binding agent 0.3g obtained, water 10g and carbon black 100g mixing granulation, obtain granulation carbon black;
Analyze the granulation carbon black obtained, result shows, the ash content 0.18% of carbon black, and fine powder content is 5%, tensile strength 0.7MPa.
Embodiment 2
100g corn cob is pulverized, add 6.5g sulfurous acid, 1.5g oxalic acid, 0.55g S-WAT 160 DEG C, be hydrolyzed under 0.5Mpa, after hydrolysis, solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of four times, after solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of twice, obtains xylose residue and liquid glucose after solid-liquid separation.
The liquid glucose obtained is condensed into the solution that solid content is 45wt%, then at 50 DEG C of sedimentation 48h, adds sodium hydroxide at 55 DEG C and carry out neutralization reaction, obtain the solution that pH value is 5.
The solution being 5 by the pH obtained carries out Plate Filtration 2 times, and the temperature of filtration is 50 DEG C, and the precoating paint of Plate Filtration is diatomite and waste active carbon, and precoating amount is 1kg/m
2, flocculating aids is diatomite, and add-on is 0.6% of liquid glucose quality, obtains the liquid glucose after filtering.
By the liquid glucose after filtration through chromatographic separation, obtain sodium lignosulfonate, wherein, the temperature of chromatographic separation is 70 DEG C, and the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
By the mixed solution that the sodium lignosulfonate 5g obtained and 95g water mix, be 900 daltonian hollow-fibre membranes by membrane molecule amount under 40 DEG C of conditions, it is 50wt% that the filtrate obtained 80 DEG C is concentrated into solid content, concentrated solution is passed through spraying dry, spray-dired inlet temperature is 260 DEG C, air outlet temperature is 80 DEG C, obtains pelletizing of carbon black binding agent.
By the pelletizing of carbon black binding agent 0.4g obtained, water 10g and carbon black 100g mixing granulation, obtain granulation carbon black;
Analyze the granulation carbon black obtained, result shows, the ash content 0.2% of its carbon black, and fine powder content is 4%, tensile strength 1.0MPa.
Embodiment 3
300g corn cob is pulverized, add 10g sulfurous acid, 5g sulfuric acid, 1.3g S-WAT 150 DEG C, be hydrolyzed under 0.6Mpa, after hydrolysis, solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of four times, after solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of twice, obtains xylose residue and liquid glucose after solid-liquid separation.
The liquid glucose obtained is condensed into the solution that solid content is 45wt%, and then at 50 DEG C of sedimentation 48h, 55 DEG C add sodium hydroxide and carry out neutralization reaction, obtain the solution that pH value is 4.
The solution being 5 by the pH obtained carries out Plate Filtration 2 times, and the temperature of filtration is 50 DEG C, and the precoating paint of Plate Filtration is diatomite and waste active carbon, and precoating amount is 1kg/m
2, flocculating aids is diatomite, and add-on is 0.6% of liquid glucose quality, obtains the liquid glucose after filtering.
By the liquid glucose after filtration through chromatographic separation, obtain sodium lignosulfonate, wherein, the temperature of chromatographic separation is 70 DEG C, and the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
By the mixed solution that the sodium lignosulfonate 10g obtained and 90g water mix, be 1000 daltonian hollow-fibre membranes by membrane molecule amount under 45 DEG C of conditions, it is 55wt% that the filtrate obtained 80 DEG C is concentrated into solid content, concentrated solution is passed through spraying dry, spray-dired inlet temperature is 260 DEG C, air outlet temperature is 80 DEG C, obtains pelletizing of carbon black binding agent.
By the pelletizing of carbon black binding agent 0.5g obtained, water 12g and carbon black 100g mixing granulation, obtain granulation carbon black;
Analyze the granulation carbon black obtained, result shows, the ash content 0.22% of carbon black, and fine powder content is 3%, tensile strength 1.2MPa.
Embodiment 4
300g corn cob is pulverized, add 10g sulfurous acid, 5g acetic acid, 1.3g S-WAT 150 DEG C, be hydrolyzed under 0.6Mpa, after hydrolysis, solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of four times, after solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of twice, obtains xylose residue and liquid glucose after solid-liquid separation.
The liquid glucose obtained is condensed into the solution that solid content is 45wt%, and then at 50 DEG C of sedimentation 48h, 55 DEG C add sodium hydroxide and carry out neutralization reaction, obtain the solution that pH value is 5.
The solution being 5 by the pH obtained carries out Plate Filtration 2 times, and the temperature of filtration is 50 DEG C, and the precoating paint of Plate Filtration is diatomite and waste active carbon, and precoating amount is 1kg/m
2, flocculating aids is diatomite, and add-on is 0.6% of liquid glucose quality, obtains the liquid glucose after filtering.
By the liquid glucose after filtration through chromatographic separation, obtain sodium lignosulfonate, wherein, the temperature of chromatographic separation is 70 DEG C, and the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
By the mixed solution that the sodium lignosulfonate 20g obtained and 230g water mix, be 1000 daltonian hollow-fibre membranes by membrane molecule amount under 45 DEG C of conditions, it is 55wt% that the filtrate obtained 80 DEG C is concentrated into solid content, concentrated solution is passed through spraying dry, spray-dired inlet temperature is 260 DEG C, air outlet temperature is 80 DEG C, obtains pelletizing of carbon black binding agent.
By the pelletizing of carbon black binding agent 0.35g obtained, water 8.75g and carbon black 100g mixing granulation, obtain granulation carbon black;
Analyze the granulation carbon black obtained, result shows, the ash content 0.19% of carbon black, and fine powder content is 4%, tensile strength 0.9MPa.
Embodiment 5
300g corn cob is pulverized, add 10g sulfurous acid, 2g acetic acid, 3g sulfuric acid, 1.3g S-WAT 150 DEG C, be hydrolyzed under 0.6Mpa, after hydrolysis, solid-liquid separation, obtains liquid glucose and sugared slag; Merge liquid glucose, sugared slag adds 100 DEG C of washings of four times, after solid-liquid separation, obtains liquid glucose and sugared slag; Merge liquid glucose, sugared slag adds 100 DEG C of washings of twice, obtains liquid glucose after solid-liquid separation, merges and obtains liquid glucose.
The liquid glucose obtained is condensed into the solution that solid content is 45wt%, and then at 50 DEG C of sedimentation 48h, 55 DEG C add sodium hydroxide and carry out neutralization reaction, obtain the solution that pH value is 5.
The solution being 5 by the pH obtained carries out Plate Filtration 2 times, and the temperature of filtration is 50 DEG C, and the precoating paint of Plate Filtration is diatomite and waste active carbon, and precoating amount is 1kg/m
2, flocculating aids is diatomite, and add-on is 0.6% of liquid glucose quality, obtains the liquid glucose after filtering.
By the liquid glucose after filtration through chromatographic separation, obtain sodium lignosulfonate, wherein, the temperature of chromatographic separation is 70 DEG C, and the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
By the mixed solution that the sodium lignosulfonate 20g obtained and 200g water mix, be 1000 daltonian hollow-fibre membranes by membrane molecule amount under 40 DEG C of conditions, it is 55wt% that the filtrate obtained 80 DEG C is concentrated into solid content, concentrated solution is passed through spraying dry, spray-dired inlet temperature is 260 DEG C, air outlet temperature is 80 DEG C, obtains pelletizing of carbon black binding agent.
By the pelletizing of carbon black binding agent 0.42g obtained, water 12g and carbon black 100g mixing granulation, obtain granulation carbon black;
Analyze the granulation carbon black obtained, result shows, the ash content 0.19% of carbon black, and fine powder content is 4%, tensile strength 1.0MPa.
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (10)
1. a pelletizing of carbon black binding agent, is obtained by membrane filtration by the sulfonated lignin prepared by liquid glucose;
The molecular weight of the film that described membrane filtration uses is 800 ~ 1000 dalton.
2. pelletizing of carbon black binding agent according to claim 1, is characterized in that, the film that described membrane filtration uses is hollow-fibre membrane or nanofiltration membrane.
3. pelletizing of carbon black binding agent according to claim 1, is characterized in that, the temperature of described membrane filtration is 30 DEG C ~ 50 DEG C.
4. pelletizing of carbon black binding agent according to claim 1, is characterized in that, the lignosulfonic acid salt brine solution of the sulfonated lignin of described membrane filtration to be solid content be 2wt% ~ 20wt%.
5. pelletizing of carbon black binding agent according to claim 1, is characterized in that, also comprises concentrating obtaining pelletizing of carbon black binding agent with spraying dry after described membrane filtration.
6. pelletizing of carbon black binding agent according to claim 5, is characterized in that, described concentrated temperature is 30 DEG C ~ 50 DEG C.
7. pelletizing of carbon black binding agent according to claim 5, is characterized in that, it is 40wt% ~ 60wt% that lignosulfonic acid salt brine solution is concentrated into solid content by described simmer down to.
8. pelletizing of carbon black binding agent according to claim 1, is characterized in that, the process that described liquid glucose prepares sulfonated lignin is:
Liquid glucose is obtained sulfonated lignin by chromatographic separation;
The solid content of described liquid glucose is 35wt% ~ 65wt%, and the pH of liquid glucose is 4 ~ 7, and in liquid glucose, reducing sugar is greater than 16%.
9. pelletizing of carbon black binding agent according to claim 1, is characterized in that, described liquid glucose is prepared in accordance with the following methods:
By the material containing xylogen and Compound-acid hybrid reaction, obtain liquid glucose;
Described Compound-acid comprises sulfurous gas, non-oxidizing acid and sulphite,
Described non-oxidizing acid is one or more in phosphoric acid, sulfuric acid, oxalic acid and acetic acid,
Described sulphite is one or more in S-WAT, potassium sulfite, magnesium sulfite and calcium sulfite.
10. a dustless carbon black, is obtained by the pelletizing of carbon black binding agent described in claim 1 ~ 9 any one, water and carbon black mixing granulation.
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Cited By (3)
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| CN109880405A (en) * | 2019-04-01 | 2019-06-14 | 济南圣泉集团股份有限公司 | A kind of modified carbon black particle and its preparation method and application |
| CN113980494A (en) * | 2021-11-15 | 2022-01-28 | 新疆德欣精细化工有限公司 | Environment-friendly carbon black and production process thereof |
| CN115851002A (en) * | 2022-11-03 | 2023-03-28 | 安徽固瑞特新材料科技有限公司 | Wet granulation process for improving intensity of cracked carbon black particles |
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