CN110371986A - Carbon divides the processing method of reactor and carbon point method and flyash - Google Patents
Carbon divides the processing method of reactor and carbon point method and flyash Download PDFInfo
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- CN110371986A CN110371986A CN201810330278.3A CN201810330278A CN110371986A CN 110371986 A CN110371986 A CN 110371986A CN 201810330278 A CN201810330278 A CN 201810330278A CN 110371986 A CN110371986 A CN 110371986A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
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Abstract
The present invention relates to carbon to divide field, it specifically provides a kind of carbon and divides reactor, it include: carbon dioxide pipeline, agitating device and carbon divide reactor body, the agitating device includes: agitating shaft and agitating paddle, and the carbon dioxide pipeline divides reactor body to be connected to for providing carbon dioxide source with the carbon；The agitating shaft protrudes into the carbon across the carbon dioxide pipeline and divides inside reactor body；The agitating paddle drives stirring so that carbon divides the carbon in reactor point reaction to carry out under agitation by the agitating shaft；Scraping blade is set on the agitating shaft for scraping.The present invention provides the processing methods that a kind of carbon carried out using reactor of the invention divides method and flyash.Carbon of the invention divides reactor from block clearing smart structural design, easily implements；Stirring is synchronous with block clearing, and block clearing frequency facilitates adjustable；Block clearing is timely, and there is no sluggishness, good blocking cleaning effects；Carbon divides reacting balance, is mingled with few, product quality height.
Description
Technical field
The present invention relates to carbon to divide field, and in particular to a kind of carbon divides reactor and a kind of carbon point method and a kind of flyash
Processing method.
Background technique
Flyash main component is aluminium oxide and silica, accounts for flyash gross weight 80-90% or more.It is mentioned from flyash
Aluminium oxide is taken, can alleviate that China's bauxite is in short supply, is the important channel of flyash higher value application.To improve aluminum-extracted pulverized fuel ash
Economy, avoid the formation of new solid waste, it is necessary to study flyash and mention in aluminium slag silica and extract and utilize
Technology.
CN101993087A proposes to use at a temperature of 70-95 DEG C in 20-38% hydrochloric acid leaching flyash after sour solvable impurity,
Alkali soluble at a temperature of 130-200 DEG C, dissolution fluid dilute filtration precipitate to obtain sodium silicate solution.
CN101077777B prepares white carbon black from high impurity content sodium silicate solution, by two step carbon point.
CN102259874A leaches flyash or residue of aluminum-extracted with lye at high temperature, and separation of solid and liquid obtains waterglass,
White carbon black is prepared using continuous carbon point method.
Waterglass is obtained by alkali soluble, and extracts silica through carbon point, is the weight that flyash and its residue of aluminum-extracted utilize
Want approach.In the entire technique, alkali soluble produces sodium silicate process comparative maturity, and carbon point extracts silica and then there is bottle
Neck.Divide in reaction process in carbon, as carbon dioxide is constantly passed through, water glass solution pH is constantly reduced, precipitation of silica analysis
It easily being adhered to after out and blocks carbon and be in charge of, reaction is made to be difficult to steadily carry out even terminating, this will lead to product quality decline, and
Process parking maintenance influences production efficiency.
To make carbon that reacting balance be divided to carry out, as shown in Figure 1, currently employed anti-blocking facility, adheres to when silica is precipitated
When even obstruction carbon is in charge of, guarantee that reaction is not interrupted by dredging online.Using the measure that this carbon point is anti-blocking, artificial frequency is needed
Numerous intervention exists simultaneously the drawbacks of dredging adjusts not in time and afterwards, it is difficult to guarantee that carbon divides reacting balance to carry out, influence product matter
Amount.Meet low iron content white carbon black as defined in HG/T 3061-2009 for example, being difficult to prepare using current technology, it is more difficult to make
It is standby to meet high-quality silica material as defined in JC/T 2128-2012 and JC/T 2001-2009.
It is anti-blocking for reactor, some technical solutions are proposed in recent years.For example, CN105586488A provides a kind of smelting
Golden auxiliary material anti-clogging blanking device, anti-block apparatus include motor, transmission shaft, agitating paddle and anti-blocking paddle, and the anti-blocking paddle of spiral shape gos deep into
Discharge port, metallurgic auxiliary materials can be effectively prevent to block in blanking device, squeeze blocking, formation hole etc., ensure metallurgic auxiliary materials blanking
Continuous uniform eliminates blanking not in time unevenly to ball-formation quality and efficiency adverse effect.
CN205073961U provides a kind of anti-clogging crystallization kettle agitating paddle, including kettle top locating rack, anchor type agitating paddle and
Stirring motor.Anchor type agitating paddle is equipped with taper crushing head and electric heating warming body, can be by broken and heating for dissolving two ways, will
The crystalline solid in bottom portion is broken to be excluded, and prevents from blocking.
CN205868260U provides a kind of stirred tank of anti-stick putty, including reaction kettle ontology, anchor formula agitating paddle, scrapes
Piece and anti-blocking blade etc..Scraping blade is mounted on the side and bottom of anchor formula agitating paddle by bolt, prevents materials from bonding on autoclave body.
Fixed plate is weldingly connected with shaft bottom, and anti-blocking blade is connected by bolt with fixed plate, prevents material to be deposited in bottom valve short
Pipe forms blocking.
It can be seen that above-mentioned technical proposal, mainly for solution blanking device solid material feeding outlet obstruction, or reaction
Device bottom crystal object and clogging deposits export problem, can not be applied to the anti-blocking and block clearing that carbon is in charge of.
Summary of the invention
The purpose of the present invention is to provide one kind can serialization carry out carbon point reaction, and carbon dioxide pipeline can
Divide method and a kind of processing method of flyash from the reactor of block clearing and a kind of carbon.
To achieve the goals above, according to the first aspect of the invention, the present invention provides a kind of carbon to divide reactor, this is anti-
Answering device includes: carbon dioxide pipeline, and agitating device and carbon divide reactor body, the agitating device include: agitating shaft and
Agitating paddle, wherein
The carbon dioxide pipeline divides reactor body to be connected to for providing carbon dioxide source with the carbon；
The agitating shaft protrudes into the carbon across the carbon dioxide pipeline and divides inside reactor body；
The agitating paddle drives stirring so that carbon divides the carbon in reactor point reaction in stirring condition by the agitating shaft
Lower progress；
Scraping blade is set on the agitating shaft for scraping in carbon point reaction process in the carbon dioxide pipeline
The cementing adherency solid that discharging section generates.
According to the second aspect of the invention, the present invention provides a kind of carbon to divide method, and this method is in carbon of the present invention
Divide in reactor and carry out, this method comprises: carbon dioxide source is passed through the carbon dioxide pipeline to carbon point reaction
Device body interior is contacted with silicic acid sodium source carries out carbon point reaction, and opening the agitating device makes the carbon point reaction in stirring condition
Lower progress, while the scraping blade on agitating shaft divides in reaction process, the scraping blade with agitating shaft drive work in the carbon
The cementing adherency solid generated to the discharging section of the carbon dioxide pipeline carries out scraping removal.
According to the third aspect of the invention we, the present invention provides a kind of processing methods of flyash, this method comprises: (1)
Waterglass is extracted from flyash；
(2) carbon point reaction is carried out according to the method described in the present invention using the waterglass as the silicic acid sodium source.
Carbon of the invention divides reactor, and in the specific application process, there are following main advantages:
1, reactor is easily implemented from block clearing smart structural design；
2, stirring is synchronous with block clearing, and block clearing frequency facilitates adjustable；
3, block clearing is timely, and there is no sluggishness, good blocking cleaning effects；
4, carbon divides reacting balance, is mingled with few, product quality height.
Divide reactor using traditional carbon, for the waterglass that the extraction process of flyash is extracted, especially high alumina
The waterglass that flyash and its residue of aluminum-extracted are obtained by alkali soluble, complicated composition, impurity content is more, during carbon point, dioxy
Change carbon admission line to be easy to block, cause flow is unstable even to interrupt, influence reacting balance progress, a large amount of impurity thus into
Enter silica, reduces product quality, it is difficult to carry out high-end applications.And reactor is divided to be applied to flyash using carbon of the invention
The waterglass that extracts of extraction process, the especially aluminous fly-ash and its residue of aluminum-extracted waterglass that is obtained by alkali soluble
When carbon point reaction, it can successfully extract to obtain the silica material of high-quality, specifically, since carbon of the invention divides reactor
Agitating shaft is placed in carbon dioxide pipeline, and scraping blade is set on agitating shaft, with carbon dioxide inner surface of pipeline
It is fitted close, is driven by agitating shaft, while agitating paddle dispersion carbon dioxide comes into full contact with waterglass and reacts, scraping blade is same
Step carries out block clearing to carbon dioxide pipeline, removes the cementing solid of silica of adherency, prevents from depositing and block, it is ensured that carbon
Divide the steady progress of reaction.
To sum up, the present invention at least has the following technical effect that
(1) for carbon point reaction the characteristics of and technical bottleneck, divide stirred reactor to redesign in existing carbon, introduce certainly
Block clearing structure, easy to implement and significant effect；
(2) coaxial design is used, stirring is synchronous with block clearing, realizes from block clearing, and frequency facilitates adjustable, adaptability
By force；
(3) aggressive mode is used from block clearing, the cementing solid of silica of Attachment can be removed, effectively prevent precipitating tired
Product blocking pipeline, block clearing is timely and effect is good；
(4) the characteristics of being based on the above reactor, the steady progress for dividing reactor to realize carbon point process from block clearing carbon, product
Quality is greatly improved, and can substantially reduce the Fe content that carbon divides in product.
Detailed description of the invention
Fig. 1 is that the carbon that the prior art uses divides reactor；
Fig. 2 is that a kind of carbon of embodiment according to the present invention divides reactor.
Description of symbols
1 reactor body, 2 agitating shaft
3 agitating paddle, 4 carbon dioxide pipeline
5 anti-blocking valve, 6 scraping blade
7 stirring motors
Specific embodiment
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
In the present invention, in the case where being not specifically noted, the noun of locality used such as " upper and lower, left and right " is typically referred to
Accordingly refer to upper and lower, left and right shown in the drawings；" inside and outside " refers to relative to the inside and outside of each component or component itself profile.
Carbon of the invention divides reactor to include: carbon dioxide pipeline, and agitating device and carbon divide reactor body, described
Agitating device includes: agitating shaft and agitating paddle, wherein the carbon dioxide pipeline divides reactor body to be connected to the carbon
For providing carbon dioxide source；The agitating shaft protrudes into the carbon across the carbon dioxide pipeline and divides in reactor body
Portion；The agitating paddle stirring driven by the agitating shaft so that carbon divide the carbon in reactor point reaction under agitation into
Row；Scraping blade is set on the agitating shaft for scraping in carbon point reaction process in the discharging section of the carbon dioxide pipeline
The cementing adherency solid generated.
In the present invention, the concept that the cementing adherency solid that the discharging section generates is well known to those skilled in the art, tool
Body is, for example, waterglass and lye of the silica that carbon point generates and its package etc., under the action of dry gas stream, in carbon point
Pipe discharge port forms cementing adherency or cementing solid, and air-flow and blocking carbon will be blocked to be in charge of under serious situation.In this regard, this hair
It is bright not described in detail herein.
Between a preferred embodiment of the invention, the preferably described scraping blade and the carbon dioxide pipeline exist
The distance of gap, the more preferable gap is less than 1mm.There are above-mentioned gaps, preferably aforementioned gap range, can facilitate the scraping blade
For block clearing and block clearing it is enough sufficiently, while can guarantee that final carbon divides the quality of product.
A preferred embodiment of the invention, the preferably described scraping blade are set along the circumferential uniform intervals of the agitating shaft
It sets.According to aforementioned setting, the enough abundant of the scraping blade block clearing can be made, while can guarantee that final carbon divides the quality of product.
A preferred embodiment of the invention, the scraping blade being arranged on the same axial height of the agitating shaft exist
Perpendicular to the agitating shaft horizontal plane projected area be less than same axial height the carbon dioxide pipeline cross
The 50% of sectional area, preferably 10-20%.Using above-mentioned setting, it can guarantee what the reactor was obtained for carbon point reaction
Product quality greatly improves.
Multiple parallel arrangements are arranged along the axial direction of the agitating shaft in a preferred embodiment of the invention
Scrape lamella.Using above-mentioned setting, the enough abundant of the scraping blade block clearing can be made, while can guarantee that the reactor is used for
The product quality that carbon point reaction obtains greatly improves.
A preferred embodiment of the invention, adjacent two to scrape lamella staggered.Using above-mentioned setting, energy
Enough make the enough abundant of the scraping blade block clearing, while the product quality that can guarantee that the reactor is obtained for carbon point reaction is big
It is big to improve.
A preferred embodiment of the invention, the discharging section are the discharge port of the carbon dioxide pipeline
To the distance segment of the 10%-30% of the carbon dioxide pipeline overall length.
According to the method for the present invention, the agitating device can be to be manually or automatic, when the agitating device
When being automatic, the preferably described agitating device further includes stirring motor, and the stirring motor is for driving the agitating shaft to rotate.
Selecting for the stirring motor can be the conventional selection and setting of this field, in this regard, the present invention is without particular/special requirement,
This is not described in detail here.
As long as the agitating paddle by the agitating shaft drives stirring so that carbon divides the carbon in reactor point reaction can be
It is carried out under stirring condition, can be according to the conventional arrangement of this field to its set-up mode without particular/special requirement, and the stirring
Form and the material selection of paddle are referred to the conventional arrangement mode of this field and the conventional material of this field, herein not in detail
Description.
A kind of embodiment according to the present invention, the agitating paddle is set to divides what reactor body was connected to stir with the carbon
Mix the bottom end of axis, wherein setting scraping blade is used for the cementing viscous of the carbon dioxide pipeline in the bottom end of the agitating shaft
Attached solid is scraped.
A kind of embodiment according to the present invention, the agitating device include: stirring motor, agitating shaft and agitating paddle,
In, the preferably described agitating shaft passes through the carbon dioxide pipeline and divides reactor body to be connected to the carbon, the stirring electricity
Machine is for driving the agitating shaft to rotate.
According to the solution of the present invention, agitating paddle and block clearing scraping blade share agitating shaft.It in the specific use process, can basis
Carbon divides the mixing effect of slurry, and minimum speed of agitator, such as 30-150rpm is arranged.Meanwhile it can be according to carbon dioxide
The blocking and equipment situation of pipeline, using big speed of agitator block clearing.Reactor i.e. of the invention, in dioxy under low speed of agitator
Change and is carried out due to the cementing solid of silica of carbon point reaction adherency by improving revolving speed, such as 300rpm on carbon admission line
Effective block clearing.
Reactor according to the present invention, from block clearing principle are as follows: whole agitating shafts or part agitating shaft are placed in titanium dioxide
In carbon admission line, and block clearing scraping blade is set on the agitating shaft close to carbon dioxide pipe outlet.Pass through agitating shaft band
It is dynamic, so that the scraping blade on agitating shaft is synchronized to two while agitating paddle dispersion carbon dioxide comes into full contact with waterglass and reacts
Carbonoxide admission line carries out block clearing, removes the cementing solid of silica of adherency, prevents from depositing and block, it is ensured that carbon point reaction
Steady progress.
It is proposed by the present invention it is a kind of divide reactor from the carbon of block clearing, can using actively and frequency modulation from block clearing mode, effectively
It solves waterglass carbon timesharing, the bottleneck of silica occlusion carbon dioxide pipeline, and reduces impurity content, improve
The purity of silica.
According to the solution of the present invention, agitating paddle can be set to multiple layers of stirring blades piece, and preferably 1-3 layers of axis fluidity paddle is formed
Jet flow axially downward effectively washes away reactor body bottom, prevents sedimentation, the aggregation of solid particle.
The plan of establishment of reactor according to the present invention divides reactor to be suitable for all waterglass carbon point system from the carbon of block clearing
The application scenarios of prepared silicon dioxide are especially suitable for the carbon point for the waterglass that flyash and its residue of aluminum-extracted are obtained by alkali soluble
Scene.
Carbon point method of the invention is divided in reactor in carbon of the present invention to be carried out, and is specifically included: by carbon dioxide source
Divide to contact with silicic acid sodium source inside reactor body by the carbon dioxide pipeline to carbon and carry out carbon point reaction, opens
Opening the agitating device carries out the carbon point reaction under agitation, while the scraping blade on agitating shaft is with the agitating shaft
Work is driven, is divided in reaction process in the carbon, the glue that the scraping blade generates the discharging section of the carbon dioxide pipeline
Knot adherency solid carries out scraping removal.The product quality that carbon point method of the invention obtains greatly improves.
The present invention to the specific formula of the carbon dioxide source and composition without particular/special requirement, according to conventional selection, root
According to a kind of preferred embodiment of the invention, CO in the carbon dioxide source2The concentration of gas is more than 30 volume %.
The present invention to the specific formula of the silicic acid sodium source and composition without particular/special requirement, according to conventional selection, according to
A kind of preferred embodiment of the invention, the concentration of sodium metasilicate is 8-15 weight % in the silicic acid sodium source.
The present invention is to the condition of the carbon point reaction without particular/special requirement, according to conventional selection, according to the present invention one
Kind preferred embodiment, the condition of the carbon point reaction include: that pH value is 7-12.
Reactor is divided to be particularly suitable for application to the waterglass that the extraction process of flyash is extracted using carbon of the invention,
Especially aluminous fly-ash and its residue of aluminum-extracted obtained by alkali soluble the carbon of waterglass point reaction when, can successfully extract to obtain
The silica material of high-quality, specifically, since carbon of the invention divides reactor that agitating shaft is placed in carbon dioxide pipe
In road, and scraping blade is set on agitating shaft, is fitted close with carbon dioxide inner surface of pipeline, is driven by agitating shaft,
Agitating paddle dispersion carbon dioxide is come into full contact with waterglass while react, and scraping blade, which synchronizes, carries out clearly carbon dioxide pipeline
It is stifled, the cementing solid of silica of adherency is removed, prevents from depositing and block, it is ensured that the steady progress of carbon point reaction.
A preferred embodiment of the invention, the processing method of flyash of the invention, comprising: (1) from fine coal
Waterglass is extracted in ash；(2) carbon is carried out according to the method described in the present invention using the waterglass as the silicic acid sodium source
Divide reaction.
According to the present invention, the preparation of waterglass, can with reference to CN101993087A, CN101077777B,
Process conditions used in the technologies such as CN102259874A.In this regard, the present invention is without particular/special requirement, herein without detailed description.
Divide reactor using traditional carbon, for the waterglass that the extraction process of flyash is extracted, especially high alumina
The waterglass that flyash and its residue of aluminum-extracted are obtained by alkali soluble, complicated composition, impurity content is more, during carbon point, dioxy
Change carbon admission line to be easy to block, cause flow is unstable even to interrupt, influence reacting balance progress, a large amount of impurity thus into
Enter silica, reduces product quality, it is difficult to carry out high-end applications.And reactor is divided to be applied to flyash using carbon of the invention
The waterglass that extracts of extraction process, the especially aluminous fly-ash and its residue of aluminum-extracted waterglass that is obtained by alkali soluble
When carbon point reaction, it can successfully extract to obtain the silica material of high-quality, specifically, since carbon of the invention divides reactor
Agitating shaft is placed in carbon dioxide pipeline, and scraping blade is set on agitating shaft, with carbon dioxide inner surface of pipeline
It is fitted close, is driven by agitating shaft, while agitating paddle dispersion carbon dioxide comes into full contact with waterglass and reacts, scraping blade is same
Step carries out block clearing to carbon dioxide pipeline, removes the cementing solid of silica of adherency, prevents from depositing and block, it is ensured that carbon
Divide the steady progress of reaction.
To sum up, the present invention at least has the following technical effect that
(1) for carbon point reaction the characteristics of and technical bottleneck, divide stirred reactor to redesign in existing carbon, introduce certainly
Block clearing structure, easy to implement and significant effect；
(2) coaxial design is used, stirring is synchronous with block clearing, realizes from block clearing, and frequency facilitates adjustable, adaptability
By force；
(3) aggressive mode is used from block clearing, the cementing solid of silica of Attachment can be removed, effectively prevent precipitating tired
Product blocking pipeline, block clearing is timely and effect is good；
(4) the characteristics of being based on the above reactor, the steady progress for dividing reactor to realize carbon point process from block clearing carbon, product
Quality is greatly improved, and can substantially reduce the Fe content that carbon divides in product.
Now by following embodiment, reactor and carbon point method and its application is divided to be introduced in carbon of the invention.
The carbon that following examples of the present invention use divide reactor it is specific be arranged as shown in Fig. 2, specifically:
Carbon divides reactor to include: carbon dioxide pipeline 4, and agitating device and carbon divide reactor body 1, the stirring dress
Set includes: agitating shaft 2, agitating paddle 3 and stirring motor 7, wherein
The carbon dioxide pipeline 4 divides reactor body 1 to be connected to for providing carbon dioxide source with the carbon；
The agitating shaft 2 protrudes into the carbon across the carbon dioxide pipeline 4 and divides inside reactor body 1；
The agitating paddle 3 drives stirring so that the carbon point reaction that carbon divides in reactor body 1 is being stirred by the agitating shaft 2
It is carried out under the conditions of mixing；
Scraping blade 6 is set on the agitating shaft for scraping in carbon point reaction process in the carbon dioxide pipeline
The cementing adherency solid that discharging section generates；The scraping blade and the carbon dioxide pipeline there are gap, the gap away from
From for 0.5mm；
The scraping blade 6 is arranged along the circumferential uniform intervals of the agitating shaft 2；
Along the axial direction of the agitating shaft, setting 2 it is parallel and staggered scrape lamella；
Throwing of the scraping blade being arranged on the same axial height of the agitating shaft in the horizontal plane perpendicular to the agitating shaft
Shadow area is the 15% of the cross-sectional area of the carbon dioxide pipeline of same axial height；
The discharging section is the discharge port of the carbon dioxide pipeline to the carbon dioxide pipeline overall length
20% distance segment.
The carbon that the following comparative example of the present invention uses divide reactor it is specific be arranged as shown in Figure 1, specifically:
Carbon divides reactor to include: carbon dioxide pipeline 4, and agitating device and carbon divide reactor body 1, the stirring dress
Set includes: agitating shaft 2, agitating paddle 3 and stirring motor 7, wherein
The carbon dioxide pipeline 4 divides reactor body 1 to be connected to for providing carbon dioxide source with the carbon；
The agitating shaft 2 protrudes into the carbon and divides inside reactor body 1；
The agitating paddle 3 drives stirring so that the carbon point reaction that carbon divides in reactor body 1 is being stirred by the agitating shaft 2
It is carried out under the conditions of mixing；
The block clearing that anti-blocking valve 5 is used for carbon dioxide pipeline is set on the carbon dioxide pipeline；
The process of block clearing is when adherency even obstruction carbon dioxide pipeline is precipitated in silica, by dredging online
Guarantee that reaction is not interrupted.
Prepare embodiment 1
A kind of aluminous fly-ash, chemical component such as table 1.
The chemical composition analysis (weight percent) of 1 aluminous fly-ash of table
| SiO2 | Al2O3 | TFe2O3 | CaO | TiO2 | C |
| 27.69 | 48.90 | 2.20 | 3.97 | 1.69 | 6 |
It is 2.0 according to sodium hydroxide and silica molar ratios, weighs sodium hydroxide, and preparing mass concentration is 10%
Aqueous slkali.It is mixed with 1 flyash of table and is stirred to react 60min at 95 DEG C, waterglass is obtained by filtration.
Prepare embodiment 2
A kind of aluminous fly-ash acid system residue of aluminum-extracted, chemical component such as table 2.
The chemical composition analysis (weight percent) of 2 acid system residue of aluminum-extracted of table
| SiO2 | Al2O3 | TFe2O3 | CaO | TiO2 | C |
| 60.04 | 13.24 | 1.64 | 1.35 | 3.24 | 17 |
It is 1.3 according to sodium hydroxide and silica molar ratios, measures sodium hydroxide, and preparing mass concentration is 30%
Aqueous slkali.It is mixed with 2 flyash of table and is stirred to react 60min at 135 DEG C, cold filtration obtains waterglass.
Embodiment 1
Waterglass obtained in preparation embodiment 1 is taken, divides reactor from block clearing carbon using Fig. 2 is proposed by the present invention, 80
Precipitated silica is obtained by filtration in carbon point, reacting balance, endpoint pH 8.5 at DEG C, and iron oxide content is after washing is dry
83ppm。
Embodiment 2
Waterglass obtained in preparation embodiment 2 is taken, divides reactor from block clearing carbon using Fig. 2 is proposed by the present invention, 80
Precipitated silica is obtained by filtration in carbon point, reacting balance, endpoint pH 8.5 at DEG C, and iron oxide content is after washing is dry
135ppm。
Comparative example 1
Waterglass obtained in preparation embodiment 1 is taken, divides reactor using Fig. 1 conventional carbon, the carbon point at 80 DEG C, air-flow is not
Precipitated silica is obtained by filtration in steady and 8 blockings of generation, endpoint pH 8.5, and iron oxide content is after washing is dry
570ppm。
Comparative example 2
Waterglass obtained in preparation embodiment 2 is taken, divides reactor using Fig. 1 conventional carbon, the carbon point at 80 DEG C, air-flow is not
Precipitated silica is obtained by filtration in steady and 9 blockings of generation, endpoint pH 8.5, and iron oxide content is after washing is dry
850pm。
By embodiment 1 and comparative example 1 as it can be seen that use is proposed by the present invention after carrying out alkali soluble desiliconization to aluminous fly-ash
Divide reactor to carry out carbon from block clearing carbon to divide, reacting balance, iron content is reduced to 83ppm by 570ppm in product.
By embodiment 2 and comparative example 2 as it can be seen that being proposed after carrying out alkali soluble desiliconization to acid system residue of aluminum-extracted using this patent
Divide reactor to carry out carbon point from block clearing carbon, reacting balance, iron content is reduced to 135ppm by 850ppm in product.
By embodiment and comparative example as it can be seen that dividing reactor from block clearing carbon using proposed by the present invention, it can be ensured that carbon divides process
It is steady to carry out, the purity for extracting silica is improved, the needs of white carbon black and high-quality silica material can be met.
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In skill of the invention
In art conception range, can with various simple variants of the technical solution of the present invention are made, including each technical characteristic with it is any its
Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, is belonged to
Protection scope of the present invention.
Claims (10)
1. a kind of carbon divides reactor, which is characterized in that the reactor includes: carbon dioxide pipeline, agitating device and carbon point
Reactor body, the agitating device include: agitating shaft and agitating paddle, wherein
The carbon dioxide pipeline divides reactor body to be connected to for providing carbon dioxide source with the carbon；
The agitating shaft protrudes into the carbon across the carbon dioxide pipeline and divides inside reactor body；
The agitating paddle stirring driven by the agitating shaft so that carbon divide the carbon in reactor point reaction under agitation into
Row；
Scraping blade is set on the agitating shaft for scraping in carbon point reaction process in the discharging of the carbon dioxide pipeline
The cementing adherency solid that section generates.
2. reactor according to claim 1, wherein the scraping blade and the carbon dioxide pipeline there are gap,
The distance in the gap is less than 1mm.
3. reactor according to claim 1, wherein the scraping blade is arranged along the circumferential uniform intervals of the agitating shaft.
4. reactor according to claim 3, wherein the scraping blade being arranged on the same axial height of the agitating shaft exists
Perpendicular to the agitating shaft horizontal plane projected area be less than same axial height the carbon dioxide pipeline cross
The 50% of sectional area, preferably 10-20%.
5. reactor described in any one of -4 according to claim 1, wherein along the axial direction of the agitating shaft, setting
Multiple parallel arrangements scrape lamella.
6. reactor according to claim 5, wherein it is staggered that adjacent two scrape lamella.
7. reactor described in any one of -4 according to claim 1, wherein the discharging section is the carbon dioxide
The discharge port of pipeline to the carbon dioxide pipeline overall length 10%-30% distance segment.
8. a kind of carbon divides method, which is characterized in that carbon of this method described in any one of claim 1-7 divides in reactor
It carries out, this method comprises: carbon dioxide source is divided inside reactor body by the carbon dioxide pipeline to carbon
It is contacted with silicic acid sodium source and carries out carbon point reaction, opening the agitating device carries out the carbon point reaction under agitation, together
When agitating shaft on scraping blade with the agitating shaft drive work, divide in reaction process in the carbon, the scraping blade is to described two
The cementing adherency solid that the discharging section of carbonoxide admission line generates carries out scraping removal.
9. according to the method described in claim 8, wherein,
CO in the carbon dioxide source2The concentration of gas is more than 30 volume %；
The concentration of sodium metasilicate is 8-15 weight % in the silicic acid sodium source；
The condition of the carbon point reaction includes: that pH value is 7-12.
10. a kind of processing method of flyash, this method comprises:
(1) waterglass is extracted from flyash；
(2) carbon point is carried out instead according to method described in claim 8 or 9 using the waterglass as the silicic acid sodium source
It answers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810330278.3A CN110371986B (en) | 2018-04-13 | 2018-04-13 | Carbon separation reactor, carbon separation method and treatment method of fly ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810330278.3A CN110371986B (en) | 2018-04-13 | 2018-04-13 | Carbon separation reactor, carbon separation method and treatment method of fly ash |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110917680A (en) * | 2019-12-18 | 2020-03-27 | 无棣荣业网具有限公司 | Backwashing system of water-gas mixed sand filter of wet steam generator |
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| CN110917680B (en) * | 2019-12-18 | 2022-03-15 | 吉林省林海雪原饮品有限公司 | Backwashing system of water-gas mixed sand filter of wet steam generator |
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