CN101993085B - Method for producing white carbon black for toothpaste from fly ash - Google Patents

Method for producing white carbon black for toothpaste from fly ash Download PDF

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Publication number
CN101993085B
CN101993085B CN201010573717A CN201010573717A CN101993085B CN 101993085 B CN101993085 B CN 101993085B CN 201010573717 A CN201010573717 A CN 201010573717A CN 201010573717 A CN201010573717 A CN 201010573717A CN 101993085 B CN101993085 B CN 101993085B
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carbon black
white carbon
toothpaste
flyash
gas
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CN101993085A (en
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王中杰
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CHINA COAL PINGSHUO COAL INDUSTRY Co Ltd
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CHINA COAL PINGSHUO COAL INDUSTRY Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency

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Abstract

The invention relates to a method for producing white carbon black, in particular to a method for producing white carbon black for toothpaste from fly ash. The method comprises the following steps of: (a) putting the fly ash, caustic soda flakes and water into a reaction kettle for alkali fusion reaction at certain temperature, filtering, separating and carbonating to prepare coarse white carbon black, and re-dissolving to prepare solution of sodium silicate; and (b) taking aqueous solution of electrolyte with a certain concentration as base solution, dripping the solution of sodium silicate into the base solution in a certain flow at certain temperature and a certain stirring speed, simultaneously introducing CO2 gas to carry out a carbonating reaction, and filtering, pulping and drying a precipitate to form the finished white carbon black for toothpaste. The investment is low, the technology is easily mastered and the economic benefit is good. The waste fly ash is changed into treasure, the method is low in carbon, energy-saving and environment-friendly, and the effect of energy conservation and emission reduction is achieved.

Description

A kind of flyash is produced the method for toothpaste with WHITE CARBON BLACK
Technical field
The present invention relates to a kind of method of producing WHITE CARBON BLACK, particularly relate to a kind of flyash and produce the method for toothpaste with WHITE CARBON BLACK.
Background technology
Produced toothpaste to use the method for WHITE CARBON BLACK all be to utilize quartz sand and soda ash to be raw material in the past, prepares water glass liquid through high-temperature high-voltage reaction, generates the sedimentation type WHITE CARBON BLACK with sulfuric acid reaction then, the highly energy-consuming of this kind technology, and high pollution, technology investment is high, and product cost is high.And coal-burning power plant's flyash that pile up like a mountain can not get using, and takies a large amount of arable lands, again contaminate environment.
Summary of the invention
The purpose of this invention is to provide a kind of flyash that can reach effects of energy saving and emission reduction and produce the method for toothpaste with WHITE CARBON BLACK.
A kind of flyash is produced the method for toothpaste with WHITE CARBON BLACK, and its step is following:
The first step is produced water glass: by flyash: the ratio of water=1: 1~3, and flyash, water dropped in the reaction kettle be heated to 40~70 ℃, adding accounts for the industrial soda of flyash quality 0.4~0.8 again; Reacted 20~40 minutes, after reaction finishes, with containing sodium hydroxide 3%~5%; Temperature is that 40 ℃~80 ℃ diluent dilutes, and after the dilution, squeezes into thickener and carries out dense; Dense after-filtration; Remove impurity and promptly get the sodium silicate solution that hangs down modulus, carry out the carbon branch then and make thick WHITE CARBON BLACK product, return with rare sodium hydroxide solution again and dissolve the sodium silicate solution that thick WHITE CARBON BLACK just obtains high-module;
Second step adopted and stream production toothpaste is used WHITE CARBON BLACK: the ionogen of preparing 120~240g/l of 6.5 liters is an end liquid; When being heated to 60~90 ℃ to end liquid, begin to feed the long-pending 10~40%CO2 gas of end liquid, and add the sodium silicate solution of 1.5 rising moduluses with the flow of 1~3 liter/h; Stir while dripping; After adding, continue to stir ventilation 10~30 minutes, filter then, washing, pickling, wash once more, making beating, spraying drying just prepare toothpaste and use WHITE CARBON BLACK.
Wherein said ionogen is sodium-chlor or carbonic acid.
Described 10~40%CO 2Gas is meant CO 2The volume(tric)fraction of gas comprises air, it can be coal-burning power plant's waste gas, boiler waste gas, limekiln exhaust gas etc.
The water glass liquid of described high-module is meant that the content of sodium oxide is 100~150g/l, and dioxide-containing silica is 300~400g/l.
Described gas flow is 300~420 liters/h.
The present invention has following advantage compared with prior art:
Less investment of the present invention, technology are prone to grasp, and be good in economic efficiency.Turn waste into wealth flyash, low-carbon energy-saving, environmentally friendly, reach the effect of energy-saving and emission-reduction.
Embodiment
Embodiment one, and it is to be that 2 ratio drops in the reaction kettle and is heated to 50 ℃ with flyash, water in liquid-solid ratio earlier that flyash of the present invention is produced method that toothpaste uses WHITE CARBON BLACK, adds the industrial sheet alkali that accounts for flyash quality 0.5 again; Reacted 20 minutes, after reaction finishes, with containing sodium hydroxide 3%; Temperature is that 50 ℃ diluent dilutes, and after the dilution, squeezes into thickener and carries out dense; Dense after-filtration; Remove impurity and promptly get the sodium silicate solution that hangs down modulus, carry out the carbon branch then and make thick WHITE CARBON BLACK product, return with rare sodium hydroxide solution again and dissolve the sodium silicate solution that thick WHITE CARBON BLACK just obtains high-module.
Employing and stream carbon divide production toothpaste to use WHITE CARBON BLACK: the sodium-chlor of preparing 6.5 liters 150g/l is end liquid, and when being heated to 75 ℃ to end liquid, beginning is with the CO of the flow feeding 30% of 300 liters/h 2Gas, and be 110g/l with the content that the flow of 1.5 liters/h adds sodium oxide, dioxide-containing silica is the sodium silicate solution of 300g/l, stirs while dripping, after adding, continues to stir and ventilates 10 minutes.Filter then, washing, pickling, wash once more, making beating, spraying drying just prepare toothpaste and use WHITE CARBON BLACK.
Embodiment two, and it is to be that 1.5 ratio drops in the reaction kettle and is heated to 55 ℃ with flyash, water in liquid-solid ratio earlier that flyash of the present invention is produced method that toothpaste uses WHITE CARBON BLACK, adds the industrial sheet alkali that accounts for flyash quality 0.6 again; Reacted 30 minutes, after reaction finishes, with containing sodium hydroxide 4%; Temperature is that 55 ℃ diluent dilutes, and after the dilution, squeezes into thickener and carries out dense; Dense after-filtration; Remove impurity and promptly get the sodium silicate solution that hangs down modulus, carry out the carbon branch then and make thick WHITE CARBON BLACK product, return with rare sodium hydroxide solution again and dissolve the sodium silicate solution that thick WHITE CARBON BLACK just obtains high-module.
Employing and stream carbon divide production toothpaste to use WHITE CARBON BLACK: the yellow soda ash of preparing 6.5 liters 190g/l is end liquid, and when being heated to 70 ℃ to end liquid, beginning is with the CO of the flow feeding 38% of 380 liters/h 2Gas, and be 120g/l with the content that the flow of 2 liters/h adds sodium oxide, dioxide-containing silica is the water glass liquid of 350g/l, stirs while dripping, after adding, continues to stir and ventilates 15 minutes.Filter then, washing, pickling, wash once more, making beating, spraying drying just prepare toothpaste and use WHITE CARBON BLACK.
Embodiment three, and it is to be that 1.2 ratio drops in the reaction kettle and is heated to 60 ℃ with flyash, water in liquid-solid ratio earlier that flyash of the present invention is produced method that toothpaste uses WHITE CARBON BLACK, adds the industrial sheet alkali that accounts for flyash quality 0.65 again; Reacted 40 minutes, after reaction finishes, with containing sodium hydroxide 4%; Temperature is that 60 ℃ diluent dilutes, and after the dilution, squeezes into thickener and carries out dense; Dense after-filtration; Remove impurity and promptly get the sodium silicate solution that hangs down modulus, carry out the carbon branch then and make thick WHITE CARBON BLACK product, return with rare sodium hydroxide solution again and dissolve the sodium silicate solution that thick WHITE CARBON BLACK just obtains high-module.
Employing and stream carbon divide production toothpaste to use WHITE CARBON BLACK: the sodium-chlor of preparing 6.5 liters 200g/l is end liquid, and when being heated to 65 ℃ to end liquid, beginning is with the CO of the flow feeding 35% of 380 liters/h 2Gas, and be 120g/l with the content that the flow of 2 liters/h adds sodium oxide, dioxide-containing silica is the sodium silicate solution of 350g/l, stirs while dripping, after adding, continues to stir and ventilates 20 minutes.Filter then, washing, pickling, wash once more, making beating, spraying drying just prepare toothpaste and use WHITE CARBON BLACK.
Embodiment four, and it is to be that 2 ratio drops in the reaction kettle and is heated to 60 ℃ with flyash, water in liquid-solid ratio earlier that flyash of the present invention is produced method that toothpaste uses WHITE CARBON BLACK, adds the industrial sheet alkali that accounts for flyash quality 0.5 again; Reacted 40 minutes, after reaction finishes, with containing sodium hydroxide 4%; Temperature is that 60 ℃ diluent dilutes, and after the dilution, squeezes into thickener and carries out dense; Dense after-filtration; Remove impurity and promptly get the sodium silicate solution that hangs down modulus, carry out the carbon branch then and make thick WHITE CARBON BLACK product, return with rare sodium hydroxide solution again and dissolve the sodium silicate solution that thick WHITE CARBON BLACK just obtains high-module.
Employing and stream carbon divide production toothpaste to use WHITE CARBON BLACK: the yellow soda ash of preparing 6.5 liters 160g/l is end liquid, and when being heated to 80 ℃ to end liquid, beginning is with the CO of the flow feeding 36% of 400 liters/h 2Gas, and be 140g/l with the content that the flow of 2 liters/h adds sodium oxide, dioxide-containing silica is the sodium silicate solution of 310g/l, stirs while dripping, after adding, continues to stir and ventilates 20 minutes.Filter then, washing, pickling, wash once more, making beating, spraying drying just prepare toothpaste and use WHITE CARBON BLACK.
Embodiment five, and it is to be that 1.5 ratio drops in the reaction kettle and is heated to 60 ℃ with flyash, water in liquid-solid ratio earlier that flyash of the present invention is produced method that toothpaste uses WHITE CARBON BLACK, adds the industrial sheet alkali that accounts for flyash quality 0.45 again; Reacted 20 minutes, after reaction finishes, with containing sodium hydroxide 5%; Temperature is that 60 ℃ diluent dilutes, and after the dilution, squeezes into thickener and carries out dense; Dense after-filtration; Remove impurity and promptly get the sodium silicate solution that hangs down modulus, carry out the carbon branch then and make thick WHITE CARBON BLACK product, return with rare sodium hydroxide solution again and dissolve the sodium silicate solution that thick WHITE CARBON BLACK just obtains high-module.
Employing and stream carbon divide production toothpaste to use WHITE CARBON BLACK: the sodium-chlor of preparing 6.5 liters 170g/l is end liquid, and when being heated to 70 ℃ to end liquid, beginning is with the CO of the flow feeding 38% of 390 liters/h 2Gas, and be 130g/l with the content that the flow of 1.5 liters/h adds sodium oxide, dioxide-containing silica is the sodium silicate solution of 310g/l, stirs while dripping, after adding, continues to stir and ventilates 20 minutes.Filter then, washing, pickling, wash once more, making beating, spraying drying just prepare toothpaste and use WHITE CARBON BLACK.

Claims (2)

1. a flyash is produced the method for toothpaste with WHITE CARBON BLACK, it is characterized in that step is following:
The first step is produced water glass: by flyash: the ratio of water=1: 1~3, and flyash, water dropped in the reaction kettle be heated to 40~70 ℃, adding accounts for the industrial soda of flyash quality 0.4~0.8 again; Reacted 20~40 minutes, after reaction finishes, with containing sodium hydroxide 3%~5%; Temperature is that 40 ℃~80 ℃ diluent dilutes, and after the dilution, squeezes into thickener and carries out dense; Dense after-filtration; Remove impurity and promptly get the water glass liquid that hangs down modulus, carry out the carbon branch then and make thick WHITE CARBON BLACK product, return with rare caustic lye of soda again and dissolve the water glass liquid that thick WHITE CARBON BLACK just obtains high-module;
Second step adopted and stream production toothpaste is used WHITE CARBON BLACK: the ionogen of preparing 120~240g/l of 6.5 liters is an end liquid, when being heated to 60~90 ℃ to end liquid, begins to feed 10~40%CO 2Gas; And add the water glass liquid of 1.5 rising moduluses with the flow of 1~3 liter/h, stir while dripping, after adding; Continue to stir ventilation 10~30 minutes, filter then, washing, pickling, wash once more, making beating, spraying drying just prepare toothpaste and use WHITE CARBON BLACK;
The water glass liquid of described high-module is meant that the content of sodium oxide is 100~150g/l, and dioxide-containing silica is 300~400g/l;
Described ionogen is sodium-chlor or yellow soda ash;
Described 10~40%CO 2Gas is meant CO 2The volume(tric)fraction of gas comprises air, it is selected from coal-burning power plant's waste gas, boiler waste gas, limekiln exhaust gas.
2. flyash according to claim 1 is produced the method for toothpaste with WHITE CARBON BLACK, it is characterized in that described CO 2Airshed is 300~420 liters/h.
CN201010573717A 2010-11-29 2010-11-29 Method for producing white carbon black for toothpaste from fly ash Active CN101993085B (en)

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
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CN102249250B (en) * 2011-06-24 2012-11-21 武汉大学 Method for purifying silicon dioxide
CN102408115A (en) * 2011-08-22 2012-04-11 通化双龙化工股份有限公司 Method for controlling gel amount in white carbon black by using precipitation method
CN102826776B (en) * 2012-08-02 2014-07-09 亿利资源集团有限公司 Method for simultaneously extracting glass microbeads from fly ash and coproducing aluminum-silicon-iron alloy and white carbon black
CN104402004A (en) * 2014-10-24 2015-03-11 山西玉竹活性石灰制造有限公司 Preparation method for production of white carbon black by industrial sodium silicate parallel flow carbon decomposition
CN104477928B (en) * 2014-12-03 2017-01-11 宋英宏 Method for extracting sodium silicate from coal ashes
CN104556056B (en) * 2014-12-25 2017-07-21 广州尚诚知识产权运营有限公司 Utilize the method for high silica flour coal ash production of silica white
CN105293754A (en) * 2015-10-09 2016-02-03 安徽华塑股份有限公司 Process for improving water quality of generator by using limekiln tail gas
CN110272053B (en) * 2018-03-16 2021-05-11 国家能源投资集团有限责任公司 Preparation method of high-purity water glass, low-iron white carbon black and ultra-white glass raw materials

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256703A (en) * 1978-11-17 1981-03-17 Chemed Corporation Fly ash collection
CN1868884A (en) * 2006-06-02 2006-11-29 李禹� Method of extracting aluminium oxide from fly ash and simultaneously producing white carbon black
CN101077777A (en) * 2007-06-21 2007-11-28 平朔煤炭工业公司 Method for preparing white carbon black from secondary carbon component
CN101125656A (en) * 2007-08-07 2008-02-20 平朔煤炭工业公司 Method for firstly extracting silicon and secondly extracting aluminum from fly ash
CN101318663A (en) * 2008-07-23 2008-12-10 平朔煤炭工业公司 Method for preparing high-modulus sodium silicate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256703A (en) * 1978-11-17 1981-03-17 Chemed Corporation Fly ash collection
CN1868884A (en) * 2006-06-02 2006-11-29 李禹� Method of extracting aluminium oxide from fly ash and simultaneously producing white carbon black
CN101077777A (en) * 2007-06-21 2007-11-28 平朔煤炭工业公司 Method for preparing white carbon black from secondary carbon component
CN101125656A (en) * 2007-08-07 2008-02-20 平朔煤炭工业公司 Method for firstly extracting silicon and secondly extracting aluminum from fly ash
CN101318663A (en) * 2008-07-23 2008-12-10 平朔煤炭工业公司 Method for preparing high-modulus sodium silicate

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