CN112456506A - Efficient energy-saving environment-friendly white carbon black production device and process - Google Patents
Efficient energy-saving environment-friendly white carbon black production device and process Download PDFInfo
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- CN112456506A CN112456506A CN202011514025.5A CN202011514025A CN112456506A CN 112456506 A CN112456506 A CN 112456506A CN 202011514025 A CN202011514025 A CN 202011514025A CN 112456506 A CN112456506 A CN 112456506A
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- carbon black
- white carbon
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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
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
- C01B33/187—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates
- C01B33/193—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates of aqueous solutions of silicates
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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
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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- Y—GENERAL 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a high-efficiency energy-saving environment-friendly white carbon black production device and a process, which comprise a sodium carbonate storage tank, a second mixing roll and a high-frequency smelting furnace, wherein the sodium carbonate storage tank, the second mixing roll and the high-frequency smelting furnace are sequentially connected, the high-frequency smelting furnace is connected to an air purifier, and the air purifier is connected with a carbonic acid storage tank; the discharge port of the high-frequency smelting furnace is connected with a water quenching melting tank, the water quenching melting tank is connected with a white carbon black sedimentation tank, the discharge port of the carbonic acid storage tank is connected with the white carbon black sedimentation tank, the white carbon black sedimentation tank is sequentially connected with a vacuum dehydrator and a microwave dryer, the microwave dryer is connected with an air dust mill, the air dust mill is connected with a plasma cracking furnace, and the plasma cracking furnace is connected with a grader. The invention adopts high-frequency smelting, vacuum dehydration and microwave drying, and utilizes the high temperature of plasma technology to instantly crack silicon dioxide into white carbon black products with the particle size below 20um, thereby realizing zero-emission production of pollutants. The whole production process is full-automatic and intelligent, safe, controllable and stable in quality.
Description
Technical Field
The invention belongs to the technical field of hazardous waste treatment and environmental protection, and particularly relates to a high-efficiency energy-saving environment-friendly white carbon black production device and an extraction method thereof.
Background
The white carbon black has wide application range, and different products have different purposes. The reinforcing performance of the reinforcing agent used as a good reinforcing agent of synthetic rubber is inferior to that of carbon black, and even superior to that of the carbon black if the reinforcing agent is subjected to superfine treatment and proper surface treatment. Especially for making white, colored and light-colored rubber products. The product can be used as thickener or thickener, synthetic oil, blending agent of insulating paint, gloss-removing agent of paint, thixotropic agent of electronic element packaging material, precipitating agent of fluorescent powder when coating fluorescent screen, color printing rubber plate filler and casting release agent. The moisture-proof and insulating properties of the resin can be improved by adding the resin into the resin. The anti-skid and oil-proof agent can be filled in plastic products to increase the anti-skid property and the oil-proof property. Filled in silicone resin to make plastic with 200 deg.C resistance. White carbon black is used as a filler and a surface ingredient of paper in the paper making industry, and is more or less used in various rubber industrial products such as inner and outer tires of automobiles, dump trucks, tractors, forklifts, bicycles and the like, industrial belts, rubber tubes, gaskets, rubber plates, threshing rubber rolls for grain processing, rubber shoes and the like. The service life of the tire can be prolonged by adding a certain amount of white carbon black into the common tire. The requirements of domestic and foreign markets for bicycle tires are increasingly diversified, and for example, new fancy varieties such as colorization of tire beads, flash rings and the like are produced by using white carbon black to replace carbon black. In the production of rubber shoes, people not only require fastness, but also require beautiful color tone, comfort and lightness for rubber shoes, rain boots, sports shoes, tourist shoes, body-building shoes, ballet shoes and the like. The white carbon black has good reinforcing property, wear resistance, skid resistance and vamp adhesiveness, and is a good light-colored reinforcing material, so that the white carbon black plays an important role in providing shoe quality and style in the development of rubber shoes. The white carbon black can be used as a filling material in plastics such as polyethylene, polypropylene, polybutylene, epoxy resin and the like, and can improve the elastic strength, the wear resistance and the thermal stability of hardness of the plastics.
The white carbon black is produced by a gas phase method in China, silicon tetrachloride is used as a raw material, the production cost is high, the white carbon black is produced by a precipitation method at present, sodium silicate is used as a raw material, a dry production process is adopted for the sodium silicate, soda ash and quartz sand are subjected to melting reaction in a horseshoe flame furnace by using coal, heavy oil and natural gas as fuels at the temperature of 1200 plus 1300 ℃, a molten material is scattered by a fan to form a granular solid glass material, the granular solid glass material is put into a roller, steam is introduced for heating and dissolving, a qualified water glass product is prepared by settling and concentrating, and the qualified water glass product is hydrolyzed, dehydrated, dried and crushed by inorganic acid (such as sulfuric acid, hydrochloric acid and the like) to obtain. The process has high energy consumption, is difficult to control and has certain influence on the environment.
Disclosure of Invention
The first purpose of the invention is to provide a high-efficiency energy-saving environment-friendly white carbon black production device.
The second purpose of the invention is to provide a high-efficiency, energy-saving and environment-friendly white carbon black production process
The first purpose of the invention is realized by the following steps that the device comprises a sodium carbonate storage tank, a second mixing roll and a high-frequency smelting furnace, wherein the sodium carbonate storage tank, the second mixing roll and the high-frequency smelting furnace are sequentially connected, the high-frequency smelting furnace is connected to an air purifier, and the air purifier is connected with a carbonic acid storage tank; the discharge port of the high-frequency smelting furnace is connected with a water quenching melting tank, the water quenching melting tank is connected with a white carbon black sedimentation tank, the discharge port of the carbonic acid storage tank is connected with the white carbon black sedimentation tank, the white carbon black sedimentation tank is sequentially connected with a vacuum dehydrator and a microwave dryer, the microwave dryer is connected with an air dust mill, the air dust mill is connected with a plasma cracking furnace, and the plasma cracking furnace is connected with a grader.
The second object of the present invention is achieved by: the method comprises the following steps:
(1) after the silicon ore is treated, the granularity of the silicon ore is 0.074mm and accounts for 85%, sodium carbonate (1: 0.5-0.7 mass ratio of silica powder to sodium carbonate) is added according to the mass ratio of the silica powder, the mixture is melted, carbon dioxide released by the sodium carbonate in the melting process is absorbed by a gas-liquid mixer 10, carbonic acid is formed in an air purifier 12, gas is discharged after purification and absorption, and the carbonic acid is kept in a saturated state for later use;
(2) dissolving molten sodium silicate at constant temperature to form liquid sodium silicate, adjusting the concentration of the sodium silicate to precipitate, performing hydrolysis reaction with carbonic acid until the reaction is complete, performing dehydration treatment, concentrating the dehydrated liquid sodium carbonate, crystallizing after the concentration is finished, and recycling the crystallized sodium carbonate;
(3) and (3) recycling steam generated in the concentration process through a condenser, drying the dehydrated white carbon black, then crushing the dried white carbon black to be more than 200 meshes, instantaneously cracking the dried white carbon black to be less than 20um by using a plasma cracking furnace 22, and then grading the white carbon black to obtain white carbon black products of different grades.
The invention has the beneficial effects that: the invention adopts high-frequency smelting, vacuum dehydration and microwave drying, and utilizes the high temperature of plasma technology to instantly crack silicon dioxide into white carbon black products with the particle size below 20um, thereby realizing zero-emission production of pollutants. The whole production process of the invention is full-automatic and intelligent, safe, controllable and stable in quality.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
in the figure: 1-a crusher, 2-a winnowing machine, 3-a blower, 4-a dust collector, 5-a mixing mill, 6-a Raymond mill, 7-a sodium carbonate storage tank, 8-a second mixing mill, 9-a high-frequency smelting furnace, 10-a gas-liquid mixer, 11-a circulating pump, 12-an air purifier, 13-a carbonic acid storage tank, 14-a water quenching melting tank, 15-a white carbon black sedimentation tank, 16-a vacuum dehydrator, 17-a microwave concentration tower, 18-a crystallization tank, 19-a condenser, 20-a microwave dryer, 21-a wind dust mill, 22-a plasma cracking furnace, 23-a classifier, 24-a second blower, 25-a second dust collector and 26-a white carbon black product collecting device.
Detailed Description
The invention is further described with reference to the accompanying drawings, but the invention is not limited in any way and any variations or modifications based on the teachings of the invention are within the scope of the invention.
As shown in fig. 1, the high-efficiency energy-saving environment-friendly white carbon black production device comprises a sodium carbonate storage tank 7, a second mixer 8 and a high-frequency smelting furnace 9, wherein the sodium carbonate storage tank 7, the second mixer 8 and the high-frequency smelting furnace 9 are sequentially connected, the high-frequency smelting furnace 9 is connected to an air purifier 12, and the air purifier 12 is connected to a carbonic acid storage tank 13; the discharge port of the high-frequency smelting furnace 9 is connected with a water quenching melting tank 14, the water quenching melting tank 14 is connected with a white carbon black sedimentation tank 15, the discharge port of the carbonic acid storage tank 13 is connected with the white carbon black sedimentation tank 15, the white carbon black sedimentation tank 15 is sequentially connected with a vacuum dehydrator 16 and a microwave dryer 20, the microwave dryer 20 is connected with an air dust mill 21, the air dust mill 21 is connected with a plasma cracking furnace 22, and the plasma cracking furnace 22 is connected with a grader 23.
The feeding end of the second mixing roll 8 is connected with a Raymond mill 6, the Raymond mill 6 is connected with a winnowing machine 2, and the winnowing machine 2 is connected with a crusher 1.
The winnowing machine 2 is connected with a first dust collector 4, and the first dust collector 4 is connected with a first mixing mill 5.
The high-frequency smelting furnace 9 is connected with a gas-liquid mixer 10, and the gas-liquid mixer 10 is connected with an air purifier 12.
The vacuum dehydrator 16 is connected to a microwave concentration tower 17, the microwave concentration tower 17 is connected to a crystallization tank 18, and the crystallization tank 18 is connected to the sodium carbonate storage tank 7.
The micro dust outlet of the classifier 23 is connected with a second dust collector 25, and the discharge port of the second dust collector 25 is connected with the last stage of the classifier 23.
A production process of high-efficiency energy-saving environment-friendly white carbon black comprises the following steps:
(1) after the silicon ore is treated, the granularity of the silicon ore is 0.074mm and accounts for 85 percent, and sodium carbonate silica powder is added according to the mass ratio of the silica powder: the ratio of sodium carbonate to sodium carbonate is 1: 0.5-0.7, the mixture is melted, carbon dioxide released by the sodium carbonate in the melting process is absorbed by a gas-liquid mixer 10, carbonic acid is formed in an air purifier 12, the gas is discharged after purification and absorption, and the carbonic acid is in a saturated state for later use;
(2) dissolving molten sodium silicate at constant temperature to form liquid sodium silicate, adjusting the concentration of the sodium silicate (the concentration value is 5-15%), precipitating, performing hydrolysis reaction with carbonic acid until the reaction is complete, performing dehydration treatment, concentrating the dehydrated liquid sodium carbonate, crystallizing after concentration, and recycling the crystallized sodium carbonate;
(3) and (3) recycling steam generated in the concentration process through a condenser, drying the dehydrated white carbon black, then crushing the dried white carbon black to be more than 200 meshes, instantaneously cracking the dried white carbon black to be less than 20um by using a plasma cracking furnace 22, and then grading the white carbon black to obtain white carbon black products of different grades.
The treatment process of the silicon ore in the step 1 specifically comprises the following steps: firstly crushing the silicon ore, then carrying out air separation, collecting the dust after air separation, then adding a certain amount of plant leaves and stems for mixing, and stacking for a certain time to obtain the organic soil.
The cracking temperature of the step 3 is 8000-120000 k.
The working principle of the invention is illustrated in the following by means of a specific embodiment:
crushing silicon ore by a crusher 1, winnowing impurities such as mud powder, oxides and the like in the mining process of raw ore by a winnowing machine 2, collecting dust obtained after winnowing by a dust collector 4 in the figure I, conveying the collected dust to a mixing mill 5, adding a certain amount of plant leaves and stems, mixing, and stacking for a certain time to obtain organic soil;
sending the crushed silicon ore after dust removal from the winnowing machine 2 to a Raymond mill 6 for crushing until the granularity is 0.074mm and accounts for 85 percent, sending the crushed silicon ore to a second mixing mill 8, and adding sodium carbonate and silicon powder from a sodium carbonate storage tank 7 according to the mass ratio of the silicon powder: the ratio of sodium carbonate to sodium carbonate is 1:0.65, the mixture is sent to a high-frequency smelting furnace 9 for melting, a large amount of carbon dioxide released by sodium carbonate in the melting process of the high-frequency smelting furnace 9 is absorbed by a gas-liquid mixer 10, carbonic acid is formed in an air purifier 12, gas is discharged after purification and absorption, and the carbonic acid is conveyed to a carbonic acid storage tank 13 for standby when reaching a saturated state;
sodium silicate melted by a high-frequency melting furnace 9 directly enters a water quenching melting tank 14 to be dissolved into liquid water glass at constant temperature, the liquid water glass is sent to a white carbon black sedimentation tank 15 after the concentration of the water glass is adjusted, carbonic acid is extracted from a carbonic acid storage tank 13 to carry out hydrolysis reaction until the pH value is 7-7.5 after the reaction is completed, the liquid sodium carbonate is sent to a vacuum dehydrator 16 to be dehydrated, the dehydrated liquid sodium carbonate is sent to a microwave concentration tower 17 to be concentrated, the concentrated liquid sodium carbonate is sent to a crystallization tank 18 to be crystallized, the crystallized liquid sodium carbonate returns to a sodium carbonate storage tank 7 to be reused, steam generated by the concentration of the microwave concentration tower 17 is sent to a condenser 19, the condenser 19 returns to the water quenching melting tank 14 to be used, white carbon black silicon dioxide dehydrated by the vacuum dehydrator 16 is sent to a microwave dryer 20 to be dried, the dried and ground to more than 200 meshes by an, then, the fine dust is sent to a classifier 23 for classification, the fine dust of the classifier 23 is collected by a second dust collector 25 and returned to the last stage of the classifier 23, and white carbon black products with different grades are obtained in a white carbon black product collecting device 26.
Claims (9)
1. The high-efficiency energy-saving environment-friendly white carbon black production device is characterized by comprising a sodium carbonate storage tank (7), a second mixing roll (8) and a high-frequency smelting furnace (9), wherein the sodium carbonate storage tank (7), the second mixing roll (8) and the high-frequency smelting furnace (9) are sequentially connected, the high-frequency smelting furnace (9) is connected to an air purifier (12), and the air purifier (12) is connected with a carbonic acid storage tank (13); high-frequency melting furnace (9) discharge gate is connected the shrend and is melted jar (14), the shrend melts jar (14) and connects white carbon black sedimentation tank (15), white carbon black sedimentation tank (15) are connected to carbonic acid storage tank (13) discharge gate, and vacuum dehydration machine (16), microwave dryer (20) are connected in proper order to white carbon black sedimentation tank (15), and wind dust mill (21) is connected in microwave dryer (20), and plasma cracking furnace (22) is connected in wind dust mill (21), and grader (23) is connected in plasma cracking furnace (22).
2. The apparatus for producing silica white with high efficiency, energy saving and environmental protection according to claim 1, wherein the feeding end of the second mixer (8) is connected with a Raymond mill (6), the Raymond mill (6) is connected with a winnowing machine (2), and the winnowing machine (2) is connected with the crusher (1).
3. The apparatus for producing silica white with high efficiency, energy saving and environmental protection according to claim 2, wherein the air separator (2) is connected to a first dust collector (4), and the first dust collector (4) is connected to a first mixer (5).
4. The efficient energy-saving environment-friendly white carbon black production device according to claim 1, wherein the high-frequency smelting furnace (9) is connected with a gas-liquid mixer (10), and the gas-liquid mixer (10) is connected with an air purifier (12).
5. The device for producing efficient energy-saving environment-friendly white carbon black according to claim 1, wherein the vacuum dehydrator (16) is connected to a microwave concentration tower (17), the microwave concentration tower (17) is connected to a crystallization tank (18), and the crystallization tank (18) is connected to the sodium carbonate storage tank (7).
6. The device for producing efficient energy-saving environment-friendly white carbon black according to claim 1, wherein the fine dust outlet of the classifier (23) is connected with a second dust collector (25), and the discharge port of the second dust collector (25) is connected with the last stage of the classifier (23).
7. The production process of the high-efficiency energy-saving environment-friendly white carbon black is characterized by comprising the following steps of:
(1) after the silicon ore is treated, the granularity of the silicon ore is 0.074mm and accounts for 85%, sodium carbonate (1: 0.5-0.7 mass ratio of silica powder to sodium carbonate) is added according to the mass ratio of the silica powder, the mixture is melted, carbon dioxide released by the sodium carbonate in the melting process is absorbed by a gas-liquid mixer 10, carbonic acid is formed in an air purifier 12, gas is discharged after purification and absorption, and the carbonic acid is kept in a saturated state for later use;
(2) dissolving molten sodium silicate at constant temperature to form liquid sodium silicate, adjusting the concentration of the sodium silicate to precipitate, performing hydrolysis reaction with carbonic acid until the reaction is complete, performing dehydration treatment, concentrating the dehydrated liquid sodium carbonate, crystallizing after the concentration is finished, and recycling the crystallized sodium carbonate;
(3) and (3) recycling steam generated in the concentration process through a condenser, drying the dehydrated white carbon black, then crushing the dried white carbon black to be more than 200 meshes, instantaneously cracking the dried white carbon black to be less than 20um by using a plasma cracking furnace 22, and then grading the white carbon black to obtain white carbon black products of different grades.
8. The production process of high-efficiency energy-saving environment-friendly white carbon black according to claim 7, wherein the treatment process of the silicon ore in the step (1) is specifically as follows: firstly crushing the silicon ore, then carrying out air separation, collecting the dust after air separation, then adding a certain amount of plant leaves and stems for mixing, and stacking for a certain time to obtain the organic soil.
9. The production process of high-efficiency energy-saving environment-friendly white carbon black according to claim 7, wherein the cracking temperature in the step (3) is 8000-120000 k.
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| US5391404A (en) * | 1993-03-15 | 1995-02-21 | The United States Of America As Represented By The National Aeronautics And Space Administration | Plasma sprayed mullite coatings on silicon-base ceramics |
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| CN1373086A (en) * | 2001-12-21 | 2002-10-09 | 叶天润 | Process for preparing both sodium carbonate and silica white |
| CN111926179A (en) * | 2020-09-09 | 2020-11-13 | 云南等离子科技有限公司 | Energy-saving and environment-friendly microwave vanadium extraction device and extraction method |
| CN112028081A (en) * | 2020-09-21 | 2020-12-04 | 刘冠诚 | Device and method for comprehensively recycling and treating phosphogypsum by using plasma |
| CN213895216U (en) * | 2020-12-21 | 2021-08-06 | 云南等离子科技有限公司 | Efficient energy-saving environment-friendly white carbon black production device |
-
2020
- 2020-12-21 CN CN202011514025.5A patent/CN112456506B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5391404A (en) * | 1993-03-15 | 1995-02-21 | The United States Of America As Represented By The National Aeronautics And Space Administration | Plasma sprayed mullite coatings on silicon-base ceramics |
| CN1192191A (en) * | 1995-06-07 | 1998-09-02 | 杰罗米·P·唐尼 | Pyrometallurgical process for treating metal-containing materials |
| CN1373086A (en) * | 2001-12-21 | 2002-10-09 | 叶天润 | Process for preparing both sodium carbonate and silica white |
| CN111926179A (en) * | 2020-09-09 | 2020-11-13 | 云南等离子科技有限公司 | Energy-saving and environment-friendly microwave vanadium extraction device and extraction method |
| CN112028081A (en) * | 2020-09-21 | 2020-12-04 | 刘冠诚 | Device and method for comprehensively recycling and treating phosphogypsum by using plasma |
| CN213895216U (en) * | 2020-12-21 | 2021-08-06 | 云南等离子科技有限公司 | Efficient energy-saving environment-friendly white carbon black production device |
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