CN111332800A - Treatment method for improving carbon black performance and impurity removal and collection equipment - Google Patents
Treatment method for improving carbon black performance and impurity removal and collection equipment Download PDFInfo
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- CN111332800A CN111332800A CN202010154127.4A CN202010154127A CN111332800A CN 111332800 A CN111332800 A CN 111332800A CN 202010154127 A CN202010154127 A CN 202010154127A CN 111332800 A CN111332800 A CN 111332800A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/36—Arrangements of containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/16—Gas pressure systems operating with fluidisation of the materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
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- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention discloses a processing method for improving carbon black performance and impurity removal and collection equipment, wherein carbon dioxide is introduced into saturated lime water, calcium hydroxide in the lime water is neutralized into calcium carbonate by utilizing the carbon dioxide, and the calcium carbonate is uniformly doped into carbon black particles in such a way, so that the contact area between the carbon black and the carbon black particles is reduced, the agglomeration force between the carbon black particles is reduced, and the purpose of improving the carbon black dispersibility is achieved; meanwhile, the particle size distribution of the carbon black is changed, the venturi effect acceleration injection principle is utilized, carbon black particles or impurities with large particle size fall into the funnel-shaped collecting hopper along with gravity due to the difference of acceleration, meanwhile, powder carbon black with small particle size continuously flows out from a carbon black outlet along with air flow due to small density, the purpose of grading collection or impurity removal of the powder carbon black is further achieved, the particle size of the collected carbon black particles is uniform, and most process requirements are met.
Description
Technical Field
The invention relates to the technical field of post-treatment of cracked carbon black, in particular to a treatment method for improving the performance of carbon black and impurity removal and collection equipment.
Background
The pyrolysis treatment of the waste tires refers to a process of cracking organic components of the tires under an oxygen-free or oxygen-deficient working condition and at a proper temperature, so that volatile substances are removed and solid carbon is formed, products mainly comprise storable energy sources such as fuel oil, carbon black and fuel gas, and the components of the products are different along with the changes of a pyrolysis mode, a pyrolysis temperature and the like. The pyrolysis method can bring high energy recovery rate, the generated pyrolysis gas, pyrolysis oil and carbon black products are similar to the performance of industrial products, and the pyrolysis gas, pyrolysis oil and carbon black products are high-grade energy, are convenient to transport, and have less pollution during recycling, so the pyrolysis method has higher added value.
The carbon black as a typical nano material has small primary particle size (usually less than 100nm) and high surface energy, is extremely easy to aggregate into larger particles, is difficult to stably disperse in different systems, limits the full play of the performance of the carbon black, influences the quality and performance of downstream products, and becomes a great bottleneck of the application of the carbon black. The dispersion of carbon black is primarily governed by three factors: the nature of the carbon black itself, the type of carrier or dispersion medium, the dispersion process and the dispersion apparatus. Under certain conditions of carbon black products, the dispersing performance of the carbon black is mainly improved by adding a dispersing agent for coating, grafting or carrying out strong oxidation treatment at present. The coating or grafting treatment of the dispersant is generally carried out in a liquid phase, and a subsequent drying procedure is also needed, so that the production cost is higher; the strong oxidation treatment generally uses strong acid or ozone, which easily causes pollution problems.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide a treatment method for improving the performance of carbon black, which can reduce large-particle impurities in carbon black and improve the dispersibility of powdered carbon black.
The invention is realized by adopting the following technical scheme:
a treatment process for improving the properties of carbon black comprising the steps of:
(1) mixing the powdery carbon black with saturated lime water according to the weight ratio of 1: (2-4), stirring and mixing uniformly, and then introducing carbon dioxide gas into the mixed solution at a carbon dioxide introduction rate of (3-5) cm3/min；
(2) Continuously introducing carbon dioxide gas for 30-50min at the temperature of 40-60 ℃, then stopping heating, stirring and dispersing the mixture for 20-40min, standing for 0.5-1h, then filtering, then carrying out spray drying on the carbon black, and collecting the dried carbon black material;
(3) the carbon black material after drying treatment is conveyed to carbon black impurity removal and collection equipment through a Venturi tube by using cold air as a conveying carrier, and particles with larger particle diameters in the carbon black material are recovered and collected to obtain powdery carbon black with excellent dispersion performance.
Another objective of the present invention is to provide a carbon black impurity removal and collection device used in the above processing method for improving carbon black performance, the device includes a carbon black feed inlet, a processing chamber, a funnel-shaped collection hopper located at a lower portion of the processing chamber, and a carbon black outlet, the carbon black feed inlet and the carbon black outlet are respectively disposed at two opposite sides of the processing chamber, the carbon black feed inlet is connected to the venturi tube, and a blowing opening with an inclined upward opening is disposed on a lower side wall of the funnel-shaped collection hopper.
Further, a baffle is arranged in the treatment cavity and is arranged in front of the carbon black outlet.
Furthermore, the baffle plates are distributed in an inclined mode, and the upper ends of the baffle plates are connected to the top of the processing cavity.
Further, an airtight valve is arranged at an outlet at the bottom end of the funnel-shaped collecting hopper.
Further, the horizontal position of the carbon black outlet is lower than that of the carbon black feeding hole.
Further, cold air or inert gas is input into the treatment cavity through the blowing opening.
Furthermore, the included angle between the blowing opening and the horizontal plane is 30-60 degrees.
Compared with the prior art, the invention has the following advantages:
according to the invention, carbon dioxide is introduced into saturated lime water, calcium hydroxide in the lime water is neutralized into calcium carbonate by the carbon dioxide, and the calcium carbonate is uniformly doped into carbon black particles in such a way, so that the contact area between the carbon black and the carbon black particles is reduced, and the agglomeration force between the carbon black particles is reduced, thereby achieving the purpose of improving the dispersion performance of the carbon black; meanwhile, the particle size distribution of the carbon black is changed, and carbon black particles with large particle size or other impurities are subjected to grading treatment by impurity removal and collection equipment, so that the collected carbon black particles have uniform particle size, and most of process requirements are met.
Drawings
FIG. 1 is a schematic structural diagram of a carbon black impurity removal and collection device in an embodiment of the present invention.
In the figure: 1-a carbon black feed port; 2-a treatment chamber; 3-funnel-shaped collecting hopper; 4-carbon black outlet; 5-a venturi tube; 6-a blowing opening; 7-a baffle plate; 8-airtight valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in figure 1, a carbon black edulcoration collecting device, this equipment include carbon black feed inlet 1, process chamber 2, be located funnel-shaped collection fill 3 and carbon black export 4 of process chamber 2 lower part, carbon black feed inlet 1 sets up respectively with carbon black export 4 the relative both sides of process chamber 2, just carbon black feed inlet 1 with venturi 5 is connected funnel-shaped collection fill 3's below lateral wall is provided with the ascending blowout mouth 6 of opening slope.
Utilize venturi effect to spray the principle with higher speed, send into treatment chamber 2 inside from carbon black feed inlet 1 through venturi with carbon black, accelerate through venturi, the acceleration that the impurity that density is big obtained is big, powdered carbon black density is little, the acceleration that obtains is little, after getting into treatment chamber 2, because the difference of acceleration, carbon black granule or the impurity of big particle size descend to hopper-shaped collection fill 3 along with gravity in, the powdered carbon black of little particle size is because density is less simultaneously, then continue to flow out from carbon black export 4 along with the air current, and then reach the purpose of carrying out hierarchical collection or edulcoration to powdered carbon black, thereby obtain the carbon black product that little particle size, dispersibility is excellent.
Further, a baffle 7 is arranged in the treatment cavity, and the baffle 7 is arranged in front of the carbon black outlet 4. The carbon black entering the processing cavity 2 at a high speed collides with the baffle 7, and the large-particle carbon black or impurities with higher density quickly change the flowing direction after colliding with the baffle 7, and easily fall into the funnel-shaped collecting hopper 3 along with the gravity, so that the carbon black is collected and processed in a grading manner.
Furthermore, the baffles 7 are distributed obliquely, and the upper ends of the baffles 7 are connected to the top of the processing chamber 2. The blocking effect of the baffle 7 on carbon black particles is improved, and the carbon black separation efficiency is improved.
Further, an airtight valve 8 is arranged at the outlet of the bottom end of the funnel-shaped collecting hopper 3.
Further, the horizontal position of the carbon black outlet 4 is lower than the horizontal position of the carbon black feed port 2.
In the present embodiment, cold air or inert gas is introduced into the processing chamber 2 through the blowing port 6. The air flow of the collecting hopper is kept not to be accumulated to generate condensed water.
Wherein, the included angle between the blowing opening 6 and the horizontal plane is 30-60 degrees. The blowing opening 6 that utilizes the slope to set up blows the less likepowder carbon black of density to in the treatment chamber 2 to discharge through carbon black export 4 along with the air current, prevent that likepowder carbon black from falling into hopper-shaped collection bucket 3 bottoms simultaneously.
Example 2
A treatment process for improving the properties of carbon black comprising the steps of:
(1) mixing the powdery carbon black with saturated lime water according to the weight ratio of 1: 3, then introducing carbon dioxide gas into the mixed solution, wherein the introduction rate of the carbon dioxide is 4cm3/min；
(2) Continuously introducing carbon dioxide gas for 40min at the temperature of 50 ℃, then stopping heating, stirring and dispersing the mixture for 30min, standing for 1h, then filtering, then carrying out spray drying on the carbon black, and collecting the dried carbon black material;
(3) the carbon black material after drying treatment is conveyed to carbon black impurity removal and collection equipment through a Venturi tube by using cold air as a conveying carrier, and particles with larger particle diameters in the carbon black material are recovered and collected to obtain powdery carbon black with excellent dispersion performance.
Example 3
A treatment process for improving the properties of carbon black comprising the steps of:
(1) mixing the powdery carbon black with saturated lime water according to the weight ratio of 1: 4, then introducing carbon dioxide gas into the mixed solution, wherein the introduction rate of the carbon dioxide is 4cm3/min；
(2) Continuously introducing carbon dioxide gas for 30min at the temperature of 60 ℃, then stopping heating, stirring and dispersing the mixture for 30min, standing for 1h, then filtering, then carrying out spray drying on the carbon black, and collecting the dried carbon black material;
(3) the carbon black material after drying treatment is conveyed to carbon black impurity removal and collection equipment through a Venturi tube by using cold air as a conveying carrier, and particles with larger particle diameters in the carbon black material are recovered and collected to obtain powdery carbon black with excellent dispersion performance.
Example 4
The dispersibility of the carbon blacks obtained in examples 2 and 3 was measured by a laser particle sizer, and the particle size tables are shown in the following table.
While the invention has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. A treatment method for improving the performance of carbon black is characterized by comprising the following steps:
(1) mixing powdered carbon black and saturated lime water according to the weight ratio of 1: (2-4) stirring and mixing uniformly, then addingIntroducing carbon dioxide gas into the mixed solution, wherein the introduction rate of the carbon dioxide is (3-5) cm3/min；
(2) Continuously introducing carbon dioxide gas at 40-60 ℃ for 30-50min, stopping heating, stirring and dispersing the mixture for 20-40min, standing for 0.5-1h, filtering, spray drying carbon black, and collecting the dried carbon black material;
(3) the method comprises the steps of using cold air as a conveying carrier, conveying the carbon black material subjected to drying treatment to carbon black impurity removal and collection equipment through a Venturi tube, recovering particles with large particle diameters in the carbon black material, and collecting the particles to obtain powdery carbon black with excellent dispersion performance.
2. The apparatus for removing impurities and collecting carbon black used in the processing method for improving the performance of carbon black according to claim 1, comprising a carbon black feeding port, a processing chamber, a funnel-shaped collecting hopper located at the lower part of the processing chamber, and a carbon black outlet, wherein the carbon black feeding port and the carbon black outlet are respectively arranged at two opposite sides of the processing chamber, the carbon black feeding port is connected with a venturi tube, and a blowing port with an inclined upward opening is arranged on the lower side wall of the funnel-shaped collecting hopper.
3. The carbon black impurity removal and collection device according to claim 2, wherein a baffle is arranged in the treatment cavity and is arranged in front of the carbon black outlet.
4. The carbon black impurity removal and collection device according to claim 3, wherein the baffles are distributed in an inclined manner, and the upper ends of the baffles are connected to the top of the treatment chamber.
5. The carbon black impurity removal and collection device according to claim 2, wherein an airtight valve is arranged at the outlet of the bottom end of the funnel-shaped collection hopper.
6. The apparatus for impurity removal and collection of carbon black according to claim 2, wherein the horizontal position of the carbon black outlet is lower than the horizontal position of the carbon black feeding port.
7. The carbon black impurity removal and collection device according to claim 2, wherein cold air or inert gas is introduced into the treatment chamber through the blowing port.
8. The apparatus for removing impurities and collecting carbon black of claim 7, wherein the included angle between the blowing opening and the horizontal plane is 30-60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010154127.4A CN111332800A (en) | 2020-03-07 | 2020-03-07 | Treatment method for improving carbon black performance and impurity removal and collection equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010154127.4A CN111332800A (en) | 2020-03-07 | 2020-03-07 | Treatment method for improving carbon black performance and impurity removal and collection equipment |
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| CN111332800A true CN111332800A (en) | 2020-06-26 |
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| CN202010154127.4A Pending CN111332800A (en) | 2020-03-07 | 2020-03-07 | Treatment method for improving carbon black performance and impurity removal and collection equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113105762A (en) * | 2021-04-13 | 2021-07-13 | 云南云维飞虎化工有限公司 | Method for improving dispersibility of carbon black |
| CN114436307A (en) * | 2022-02-23 | 2022-05-06 | 河北立信新材料科技有限公司 | Preparation method of light calcium carbonate special for rubber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB969538A (en) * | 1960-10-28 | 1964-09-09 | Mount Royal Rice Mills Ltd | Method of removing volatile constituents and carbon from rice hulls |
| CN201857360U (en) * | 2010-11-12 | 2011-06-08 | 江西黑猫炭黑股份有限公司 | Device for removing fine powder in carbon black |
| CN102601052A (en) * | 2012-03-07 | 2012-07-25 | 无锡双诚炭黑有限公司 | Hard carbon remover for powder carbon black |
| CN204816920U (en) * | 2015-06-11 | 2015-12-02 | 无锡双诚炭黑有限公司 | Likepowder carbon black edulcoration device |
| CN105271253A (en) * | 2015-11-11 | 2016-01-27 | 贵州省化工研究院 | Method for removing ammonium fluoride impurities in white carbon black |
-
2020
- 2020-03-07 CN CN202010154127.4A patent/CN111332800A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB969538A (en) * | 1960-10-28 | 1964-09-09 | Mount Royal Rice Mills Ltd | Method of removing volatile constituents and carbon from rice hulls |
| CN201857360U (en) * | 2010-11-12 | 2011-06-08 | 江西黑猫炭黑股份有限公司 | Device for removing fine powder in carbon black |
| CN102601052A (en) * | 2012-03-07 | 2012-07-25 | 无锡双诚炭黑有限公司 | Hard carbon remover for powder carbon black |
| CN204816920U (en) * | 2015-06-11 | 2015-12-02 | 无锡双诚炭黑有限公司 | Likepowder carbon black edulcoration device |
| CN105271253A (en) * | 2015-11-11 | 2016-01-27 | 贵州省化工研究院 | Method for removing ammonium fluoride impurities in white carbon black |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113105762A (en) * | 2021-04-13 | 2021-07-13 | 云南云维飞虎化工有限公司 | Method for improving dispersibility of carbon black |
| CN114436307A (en) * | 2022-02-23 | 2022-05-06 | 河北立信新材料科技有限公司 | Preparation method of light calcium carbonate special for rubber |
| CN114436307B (en) * | 2022-02-23 | 2024-01-09 | 河北立信新材料科技有限公司 | Preparation method of special light calcium carbonate for rubber |
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Application publication date: 20200626 |