CN113122027A - Carbon black and preparation method and application thereof - Google Patents
Carbon black and preparation method and application thereof Download PDFInfo
- Publication number
- CN113122027A CN113122027A CN202110315916.6A CN202110315916A CN113122027A CN 113122027 A CN113122027 A CN 113122027A CN 202110315916 A CN202110315916 A CN 202110315916A CN 113122027 A CN113122027 A CN 113122027A
- Authority
- CN
- China
- Prior art keywords
- carbon black
- air
- reaction
- producing carbon
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- C09C1/50—Furnace black ; Preparation thereof
-
- 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
- C09C1/56—Treatment of carbon black ; Purification
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0079—Electrostatic discharge protection, e.g. ESD treated surface for rapid dissipation of charges
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention discloses carbon black and a preparation method and application thereof. The preparation method of the carbon black can improve the porosity of the carbon black product and reduce the oxygen-containing functional groups on the surface of the carbon black product, thereby improving the conductivity of the carbon black. The carbon black prepared by the method has the advantages of high specific surface area, large oil absorption value, low washed screen residue, good conductivity and good stability. The product with good conductivity can be obtained by applying the conductive material.
Description
Technical Field
The invention belongs to the technical field of carbon black production, and particularly relates to carbon black and a preparation method and application thereof.
Background
The conductive carbon black prepared by the oil furnace method has good conductivity and dispersibility, but is limited by raw materials and production processes, the product purity is low, the requirements of high-end conductive products cannot be met, and the development of the carbon black industry is also severely restricted. At present, carbon black enterprises mainly adjust carbon black parameters by methods such as purity optimization of raw carbon black oil, structural improvement of a reaction section, size and process parameter adjustment (granulator frequency change) and the like. The prior art has limited adjustment on the structure of the carbon black, the conductivity is improved to a small extent, and the carbon black can be used in the field of antistatic conductive application at relatively low ends, but high-quality carbon black products which are enough to meet the high conductive requirement are difficult to produce.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art described above. Therefore, the first aspect of the present invention provides a method for preparing carbon black, which can improve the porosity of the carbon black product and reduce the oxygen-containing functional groups on the surface of the carbon black product, thereby improving the conductivity of the carbon black.
The second aspect of the present invention provides a carbon black obtained by the above-mentioned method for producing a carbon black.
A third aspect of the present invention proposes the use of the above carbon black in an electrically conductive material.
According to one aspect of the present invention, there is provided a method for producing carbon black, comprising the steps of:
s1: feeding the preheated fuel oil and air into a reaction furnace for combustion reaction;
s2: adding raw oil, after cracking reaction, quenching carbon black flue gas and adding an oxidant;
s3: further cooling the carbon black flue gas, and separating solid gas to obtain oxidized carbon black;
s4: and reducing the oxidized carbon black during granulation to obtain the product.
The larger the surface porosity of the conductive carbon black particles is, the larger the number of particles of carbon black dispersed in a unit polymer volume is, the larger the number of adjacent particles is, the smaller the distance between adjacent particles is, and the better the conductivity is. According to the invention, the oxidant is added when the carbon black flue gas is quenched, so that the carbon black crystal growth points can be reduced, the porosity of the conductive carbon black is improved, the carbon black particle spacing is reduced, the construction of a carbon black conductive tunnel is facilitated, and the conductivity of the conductive carbon black is improved.
In some embodiments of the invention, the reducing in S4 comprises reducing the oxidized carbon black with prilling water, a reducing agent, and a binder. The reducing agent is added into the granulating water, so that oxygen-containing functional groups on the surface of the carbon black can be effectively reduced, an electron trap is prevented from being formed in the production process of the carbon black, the electron movement is prevented, the surface activity of the carbon black is improved, oily oxides on the surface of the carbon black are removed, and the conductivity of the carbon black is improved.
In some preferred embodiments of the present invention, the reducing in S4 includes reducing the oxidized carbon black with granulated water pressurized with carbon dioxide, a reducing agent. More preferably, the pressure for pressurization is 8MPa to 10 MPa. Carbon dioxide gas is introduced into the granulation water under pressure to be dissolved in the water, and the carbon dioxide gas is generated after the granulation reduction stage is heated to be full of the granulation section, so that the air content of the granulation section is reduced, oxygen is blocked, and the carbon black is prevented from being oxidized easily, thereby purifying the carbon black.
In some more preferred embodiments of the present invention, the oxidant in S2 is at least one selected from potassium permanganate, dilute nitric acid, sodium hypochlorite, and iodine.
In some more preferred embodiments of the present invention, the concentration of the oxidant in S2 is (1-2) kg/m3。
In some more preferred embodiments of the present invention, the reducing agent is selected from at least one of oxalic acid, ethanol, hydrazine hydrate.
In some more preferred embodiments of the present invention, the concentration of the reducing agent is (0.5 to 2.5) kg/m3。
In some more preferred embodiments of the invention, the binder is at least one of lignin, maltose, molasses; more preferably, the concentration of the binder is (150-160) kg/m3。
In some more preferred embodiments of the present invention, the preparation method further comprises drying the product, and the drying method comprises controlling the volume flow ratio of the tail gas to the air in the drying environment to be (0.75-1.25): 1. more preferably, the drying is performed by using a rotary dryer, and the rotating speed frequency of the rotary dryer is 40Hz to 60 Hz. By adjusting the flow rate ratio of the tail gas to the air, a low-oxidation drying and cooling environment is created for the carbon black, and the carbon black is prevented from being combined with oxygen in the air and being oxidized at the later stage, so that the conductive carbon black with continuous conductivity is obtained.
In some more preferred embodiments of the present invention, the mass flow ratio of the fuel oil to the air in S1 is (55-89): 1.
in some more preferred embodiments of the present invention, the temperature of the preheating in S1 is 90 to 130 ℃.
In some more preferred embodiments of the present invention, the temperature of the cleavage reaction in S2 is 1800 ℃ to 1900 ℃.
In some more preferred embodiments of the present invention, the quenching in S2 is performed by using quenching water, the flow rate of the quenching water is (5-15) kg/h, the pressure is 0.5 MPa-0.7 MPa, and the temperature of the carbon black flue gas is reduced to 750-850 ℃.
In some more preferred embodiments of the present invention, in the S3, the carbon black flue gas is further cooled to 240 ℃ to 270 ℃.
In some more preferred embodiments of the present invention, the granulating in S4 is performed using a granulator having a rotation frequency of 30Hz to 45 Hz.
According to a second aspect of the present invention, there is provided carbon black obtained by the above-mentioned method for producing carbon black.
In some embodiments of the present invention, the carbon black has an iodine absorption value of (85 to 100) g/kg and a nitrogen absorption value of (75 to 90). times.103m2A/kg, oil absorption value of (133-143) × 10-5m3A coloring intensity of 65-75%, a screen residue of 0-20%, a volume resistivity of 0-40 x 10-2Ω/m。
According to a third aspect of the present invention, there is provided the use of the above carbon black in an electrically conductive material.
In some embodiments of the present invention, the conductive material may be a cable shielding material, a battery conductive liquid, an antistatic coating or an electromagnetic shielding coating, and the like.
According to a fourth aspect of the invention, the equipment for preparing the carbon black by applying the preparation method comprises a preheater, a reaction furnace, a heat exchanger, a filter bag, a pulverizer, a granulator, a dryer and an air dissolving machine which are connected in sequence, wherein the air dissolving machine is connected with the granulator.
In some embodiments of the invention, the apparatus further comprises a dosing device connected to the preheater for dosing fuel oil, feed oil and air to the preheater.
The technical scheme of the invention has the beneficial effects that:
1. in the preparation method of the carbon black, the oxidant is added when the carbon black smoke is quenched, so that the growth points of carbon black crystals can be reduced, the porosity of the conductive carbon black is improved, the particle distance of the carbon black is reduced, the construction of a carbon black conductive tunnel is facilitated, and the conductivity of the conductive carbon black is improved.
2. For the reduction of the oxidized carbon black, a reducing agent, particularly hydrazine hydrate, is added into the granulating water, so that an electron trap can be prevented from being formed in the production process of the carbon black, the electron movement is hindered, the surface activity of the carbon black is improved, oily oxides on the surface of the carbon black are removed, and the conductivity of the carbon black is improved. Or the carbon dioxide gas is introduced into the granulation water under pressure to be dissolved in the water, and the carbon dioxide gas is generated after the granulation reduction stage is heated to fill the granulation section, so that the air content of the granulation section is reduced, oxygen is blocked, and the carbon black is prevented from being oxidized easily, thereby purifying the carbon black.
3. The invention adopts the reducing agent or the granulating water which is pressurized and introduced with carbon dioxide gas to reduce after adopting the oxidizing agent to carry out quenching, and the conductivity of the carbon black is synergistically improved from two aspects of improving the porosity of the carbon black and reducing the electron traps on the surface of the carbon black.
4. And further drying the product, and establishing a low-oxidation drying and cooling environment for the carbon black by adjusting the flow rate ratio of the tail gas to the air, so that the carbon black is prevented from being combined with oxygen in the air to be oxidized at the later stage, and the conductive carbon black with continuous conductivity is obtained.
5. The carbon black prepared by the method has the advantages of high specific surface area, large oil absorption value, low washed screen residue, good conductivity and good stability.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is a schematic diagram of a preparation process of example 1 of the present invention.
FIG. 2 is a schematic view of the preparation process of example 2 of the present invention.
FIG. 3 is a schematic view of the preparation process of example 3 of the present invention.
FIG. 4 shows an apparatus for producing carbon black according to the present invention.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
In the following examples or comparative examples, carbon black was prepared using the apparatus for preparing carbon black shown in FIG. 4.
The feeding equipment firstly preheats fuel oil and air in a preheater, then introduces the preheated fuel oil and air into a reaction furnace to be mixed with raw oil, supplies heat for subsequent reaction, cracks the raw oil at high temperature of the reaction furnace to form carbon black flue gas, adds cooling water containing an oxidant to terminate carbon black reaction and carries out catalytic activation on carbon black aggregates; the carbon black flue gas exchanges heat with air, fuel oil and raw oil in a heat exchanger through a gasification section to reduce the temperature, the cooled flue gas is subjected to solid-gas separation in a filter bag, and the gathered carbon black is crushed by a crusher; the carbon dioxide is pressurized and dissolved in granulating water containing a reducing agent by an air dissolving machine filled with the carbon dioxide, then the carbon dioxide is filled into a granulator, and is granulated with crushed carbon black particles, a binding agent and the like, and the carbon black particles, the binding agent and the like are dried in a rotary dryer to form a carbon black finished product.
Example 1
The carbon black is prepared in the embodiment, the schematic processing flow diagram of which is shown in fig. 1, and the specific process is as follows:
s1: adding coal tar and air preheated to 100 ℃ into a combustion section of the reaction furnace according to the mass flow ratio of 60:1, and combusting the coal tar and the air in the combustion section;
s2: adding raw oil into a reaction section of a reaction furnace, setting the reaction temperature at 1850-1900 ℃ and the pressure at 0.5MPa, spraying cooling water at the flow rate of 5kg/h when the raw oil is subjected to a cracking reaction and gradually forms aggregates, cooling carbon black flue gas, stopping carbon black reaction, and simultaneously adding 1kg/m mass concentration of cooling water into the cooling water3The potassium permanganate is used for carrying out catalytic activation on the carbon black aggregate to obtain carbon black smoke with a developed pore structure;
s3: setting the pressure of a pneumatic pipe in the pneumatic conveying system to 700MPa, further cooling the carbon black flue gas prepared by S2 in a heat exchange device through the pneumatic conveying system to about 260 ℃, separating carbon black from tail gas, and burning the tail gas for power generation and subsequent drying;
s4: feeding the carbon black in the S3 into a wet granulator through an air conveying system, adding granulating water, wherein the mass concentration is 150kg/m3The mass concentration of the lignin is 0.5kg/m3The hydrazine hydrate is mixed and granulated at the rotating speed frequency of 30 Hz;
s5: and (3) feeding the carbon black particles prepared in the S4 into a rotary dryer through an air conveying system, controlling the volume flow ratio of tail gas to air in the rotary dryer to be 0.75:1, and carrying out rotary drying at the rotating speed frequency of 40Hz to prepare a product.
Example 2
The carbon black prepared in this example has a schematic processing flow as shown in fig. 2, and the specific process is as follows:
s1: adding coal tar and air preheated to 110 ℃ into a combustion section of the reaction furnace according to the mass flow ratio of 65:1, and combusting the coal tar and the air in the combustion section;
s2: adding raw oil into a reaction section of a reaction furnace, setting the reaction temperature at 1850-1900 ℃ and the pressure at 0.6MPa, spraying cooling water at the flow rate of 7kg/h when the raw oil undergoes a cracking reaction and gradually forms aggregates, cooling carbon black flue gas, stopping carbon black reaction, and simultaneously adding 1.2kg/m mass concentration into the cooling water3The dilute nitric acid is used for carrying out catalytic activation on the carbon black aggregate to obtain carbon black smoke with a developed pore structure;
s3: setting the pressure of a pneumatic pipe in the pneumatic conveying system to be 800MPa, further cooling the carbon black flue gas prepared by S2 in a heat exchange device through the pneumatic conveying system to about 250 ℃, separating carbon black from tail gas, and burning the tail gas for power generation and subsequent drying;
s4: feeding the carbon black in S3 into a wet granulating machine through an air conveying system, mixing carbon dioxide gas into granulating water by using a gas-liquid mixing pump to obtain aerosol granulating water, and mixing the aerosol granulating water with the mass concentration of 156kg/m3The lignin is mixed and granulated at the rotating speed frequency of 30 Hz;
s5: and (3) feeding the carbon black particles prepared in the step (S4) into a rotary dryer through an air conveying system, controlling the volume flow ratio of tail gas to air in the rotary dryer to be 0.85:1, and carrying out rotary drying at the rotating speed frequency of 50Hz to obtain a product.
Example 3
The carbon black prepared in this example has a schematic processing flow as shown in fig. 3, and the specific process is as follows:
s1: adding coal tar and air preheated to 120 ℃ into a combustion section of the reaction furnace according to the mass flow ratio of 70:1, and combusting the coal tar and the air in the combustion section;
s2: adding raw oil into a reaction section of a reaction furnace, setting the reaction temperature at 1850-1900 ℃ and the pressure at 0.5MPa, spraying cooling water at the flow rate of 9kg/h when the raw oil undergoes a cracking reaction and gradually forms aggregates, cooling carbon black flue gas, stopping carbon black reaction, and simultaneously adding 1.5kg/m mass concentration into the cooling water3The iodine is used for carrying out catalytic activation on the carbon black aggregate to obtain carbon black smoke with a developed pore structure;
s3: setting the pressure of a pneumatic pipe in the pneumatic conveying system to be 900MPa, further cooling the carbon black flue gas prepared by S2 in a heat exchange device through the pneumatic conveying system to about 240 ℃, separating carbon black from tail gas, and burning the tail gas for power generation and subsequent drying;
s4: feeding the carbon black in S3 into a wet granulating machine via an air conveying system, mixing carbon dioxide gas into granulating water by using a gas-liquid mixing pump to obtain gas dissolving granulating water, adding the gas dissolving granulating water to obtain a mixture with a mass concentration of 158kg/m3Lignin, mass concentrationIs 0.5kg/m3The hydrazine hydrate is mixed and granulated at the rotating speed frequency of 30 Hz;
s5: and (3) feeding the carbon black particles prepared in the S4 into a rotary dryer through an air conveying system, controlling the volume flow ratio of tail gas to air in the rotary dryer to be 0.95:1, and carrying out rotary drying at the rotating speed frequency of 60Hz to prepare a product.
Comparative example 1
This comparative example prepared a carbon black, which differs from example 3 in that no oxidizing agent was added in S2, and the specific procedure was:
s1: adding coal tar and air preheated to 120 ℃ into a combustion section of the reaction furnace according to the mass flow ratio of 70:1, and combusting the coal tar and the air in the combustion section;
s2: adding raw oil into a reaction section of a reaction furnace, setting the reaction temperature to be 1850-1900 ℃, the pressure to be 0.5MPa, spraying cooling water at the flow rate of 9kg/h when the raw oil is subjected to cracking reaction and gradually forms aggregates, cooling carbon black flue gas, and stopping carbon black reaction;
s3: setting the pressure of a pneumatic pipe in the pneumatic conveying system to be 900MPa, further cooling the carbon black flue gas prepared by S2 in a heat exchange device through the pneumatic conveying system to about 240 ℃, separating carbon black from tail gas, and burning the tail gas for power generation and subsequent drying;
s4: feeding the carbon black in S3 into a wet granulating machine via an air conveying system, mixing carbon dioxide gas into granulating water by using a gas-liquid mixing pump to obtain gas dissolving granulating water, adding the gas dissolving granulating water to obtain a mixture with a mass concentration of 158kg/m3The mass concentration of the lignin is 0.5kg/m3The hydrazine hydrate is mixed and granulated at the rotating speed frequency of 30 Hz;
s5: and (3) feeding the carbon black particles prepared in the S4 into a rotary dryer through an air conveying system, controlling the volume flow ratio of tail gas to air in the rotary dryer to be 0.95:1, and carrying out rotary drying at the rotating speed frequency of 60Hz to prepare a product.
Comparative example 2
This comparative example prepared a carbon black, which differs from example 3 in that no reducing agent was added in S4, and the specific procedure was:
s1: adding coal tar and air preheated to 120 ℃ into a combustion section of the reaction furnace according to the mass flow ratio of 70:1, and combusting the coal tar and the air in the combustion section;
s2: adding raw oil into a reaction section of a reaction furnace, setting the reaction temperature at 1850-1900 ℃ and the pressure at 0.5MPa, spraying cooling water at the flow rate of 9kg/h when the raw oil undergoes a cracking reaction and gradually forms aggregates, cooling carbon black flue gas, stopping carbon black reaction, and simultaneously adding 1.5kg/m mass concentration into the cooling water3The iodine is used for carrying out catalytic activation on the carbon black aggregate to obtain carbon black smoke with a developed pore structure;
s3: setting the pressure of a pneumatic pipe in the pneumatic conveying system to be 900MPa, further cooling the carbon black flue gas prepared by S2 in a heat exchange device through the pneumatic conveying system to about 240 ℃, separating carbon black from tail gas, and burning the tail gas for power generation and subsequent drying;
s4: feeding the carbon black in S3 into a wet granulating machine via an air conveying system, mixing carbon dioxide gas into granulating water by using a gas-liquid mixing pump to obtain gas dissolving granulating water, adding the gas dissolving granulating water to obtain a mixture with a mass concentration of 158kg/m3The lignin is mixed and granulated at the rotating speed frequency of 30 Hz;
s5: and (3) feeding the carbon black particles prepared in the S4 into a rotary dryer through an air conveying system, controlling the volume flow ratio of tail gas to air in the rotary dryer to be 0.95:1, and carrying out rotary drying at the rotating speed frequency of 60Hz to prepare a product.
Comparative example 3
This comparative example prepared a carbon black which differs from example 3 in that no aerosol granulation water was used in S4 by the following procedure:
s1: adding coal tar and air preheated to 120 ℃ into a combustion section of the reaction furnace according to the mass flow ratio of 70:1, and combusting the coal tar and the air in the combustion section;
s2: adding raw oil into the reaction section of a reaction furnace, setting the reaction temperature at 1850-1900 ℃ and the pressure at 0.5MPa, spraying cooling water at the flow rate of 9kg/h when the raw oil is subjected to cracking reaction and gradually forms aggregates, cooling carbon black flue gas, stopping carbon black reaction, and simultaneously adding the cooling waterThe mass concentration of the mixed solution is 1.5kg/m3The iodine is used for carrying out catalytic activation on the carbon black aggregate to obtain carbon black smoke with a developed pore structure;
s3: setting the pressure of a pneumatic pipe in the pneumatic conveying system to be 900MPa, further cooling the carbon black flue gas prepared by S2 in a heat exchange device through the pneumatic conveying system to about 240 ℃, separating carbon black from tail gas, and burning the tail gas for power generation and subsequent drying;
s4: feeding the carbon black in the S3 into a wet granulator through an air conveying system, adding granulating water, wherein the mass concentration is 158kg/m3The mass concentration of the lignin is 0.5kg/m3The hydrazine hydrate is mixed and granulated at the rotating speed frequency of 30 Hz;
s5: and (3) feeding the carbon black particles prepared in the S4 into a rotary dryer through an air conveying system, controlling the volume flow ratio of tail gas to air in the rotary dryer to be 0.95:1, and carrying out rotary drying at the rotating speed frequency of 60Hz to prepare a product.
Test examples
This test example tested the performance of the carbon blacks prepared in examples 1-3 and comparative examples 1-2. Wherein:
the iodine absorption value test basis is GB/T3780.1-2006;
the nitrogen adsorption test is based on GB/T10722-2014;
the oil absorption value is GB/T3780.2-2017;
the coloring strength is tested according to GB/T3780.6-2016;
the screen residue is tested according to GB/T3780.21-2016.
The test results are shown in table 1:
TABLE 1
As can be seen from Table 1, in example 3, the oil absorption value and the volume resistivity of the carbon black product are greatly improved by combining the synergy of a cooling water oxidant, an aerosol granulating water, a granulating water reducing agent and the like. As can be seen by comparing example 3 with comparative example 1, the addition of the cooling water oxidizing agent can effectively increase the oil absorption value of the carbon black, mainly because the carbon black forms a porous structure with the help of the oxidizing agent, and thus the volume resistivity of the carbon black is increased; as can be seen from the comparison between example 3 and comparative example 2, the use of the aerosol granulating water does not cause great changes in various parameters, mainly because the aerosol granulating water mainly has the function of keeping the carbon black in an oxygen-free environment during the cooling process and preventing secondary reaction with oxygen during the high-temperature cooling process, so that the method needs to be used together with the reducing agent of the granulating water; it can be seen from example 3 and comparative example 3 that the conductive effect of the carbon black product is not as good as when used in conjunction with the aerosol granulation water, despite the use of the reducing agent in the granulation water, mainly because at the drying temperature of 200 c, the carbon black continues to react with the residual oxygen in the air, thus deteriorating the reducing effect of the reducing agent.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. A method for preparing carbon black, which is characterized in that: the method comprises the following steps:
s1: feeding the preheated fuel oil and air into a reaction furnace for combustion reaction;
s2: adding raw oil, after cracking reaction, quenching carbon black flue gas and adding an oxidant;
s3: further cooling the carbon black flue gas, and separating solid gas to obtain oxidized carbon black;
s4: and reducing the oxidized carbon black during granulation to obtain the product.
2. The method for producing carbon black according to claim 1, characterized in that: the reducing in S4 includes reducing the oxidized carbon black with prilling water, a reducing agent, and a binder.
3. The method for producing carbon black according to claim 1, characterized in that: the reduction in S4 includes reducing the carbon black oxide with granulated water into which carbon dioxide is introduced under pressure and a reducing agent.
4. The method for producing carbon black according to claim 1, characterized in that: the oxidant in S2 is at least one selected from potassium permanganate, dilute nitric acid, sodium hypochlorite and iodine.
5. The method for producing carbon black according to claim 2 or 3, characterized in that: the reducing agent is at least one selected from oxalic acid, ethanol and hydrazine hydrate.
6. The method for producing carbon black according to claim 1, characterized in that: the preparation method also comprises the step of drying the product, wherein the drying method comprises the step of controlling the volume flow ratio of the tail gas to the air in a drying environment to be 1: (0.75 to 1.25).
7. The method for producing carbon black according to claim 1, characterized in that: the concentration of the oxidant in S2 is (1-2) kg/m3。
8. A carbon black produced by the method for producing carbon black according to any one of claims 1 to 7.
9. Use of the carbon black of claim 8 in an electrically conductive material.
10. An apparatus for producing carbon black by the production method according to claim 3, characterized in that: the device comprises a preheater, a reaction furnace, a heat exchanger, a filter bag, a pulverizer, a granulator, a dryer and an air dissolving machine which are connected in sequence, wherein the air dissolving machine is connected with the granulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110315916.6A CN113122027B (en) | 2021-03-24 | 2021-03-24 | Carbon black and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110315916.6A CN113122027B (en) | 2021-03-24 | 2021-03-24 | Carbon black and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113122027A true CN113122027A (en) | 2021-07-16 |
| CN113122027B CN113122027B (en) | 2022-04-19 |
Family
ID=76774251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110315916.6A Active CN113122027B (en) | 2021-03-24 | 2021-03-24 | Carbon black and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113122027B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113956688A (en) * | 2021-11-24 | 2022-01-21 | 茂名环星新材料股份有限公司 | Carbon black and preparation method and application thereof |
| CN114085555A (en) * | 2021-11-29 | 2022-02-25 | 苏州宝化炭黑有限公司 | High volume resistivity carbon black, process for its manufacture and its use |
| CN115851002A (en) * | 2022-11-03 | 2023-03-28 | 安徽固瑞特新材料科技有限公司 | Wet granulation process for improving intensity of cracked carbon black particles |
| CN116196834A (en) * | 2023-03-20 | 2023-06-02 | 金能科技股份有限公司 | Adjusting device of carbon black drying index |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1125459A (en) * | 1993-06-15 | 1996-06-26 | 卡伯特公司 | Process for producing carbon blacks |
| CN1829776A (en) * | 2003-08-05 | 2006-09-06 | 三菱化学株式会社 | carbon black |
| CN101787226A (en) * | 2010-02-11 | 2010-07-28 | 山西永东化工股份有限公司 | Production method of coal tar-based conductive carbon black |
| CN102007186A (en) * | 2008-02-19 | 2011-04-06 | 卡伯特公司 | Mesoporous carbon black and processes for making same |
| CN104860492A (en) * | 2015-05-19 | 2015-08-26 | 李宗奎 | Treatment method and system for by-product carbon black mud during acetylene production |
| WO2018140367A1 (en) * | 2017-01-27 | 2018-08-02 | Cabot Corporation | Supercapacitors containing carbon black particles cleaned with an acid |
| CN111303668A (en) * | 2020-03-02 | 2020-06-19 | 乌海黑猫炭黑有限责任公司 | Low-energy-consumption high-pigment carbon black production method and production equipment thereof |
-
2021
- 2021-03-24 CN CN202110315916.6A patent/CN113122027B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1125459A (en) * | 1993-06-15 | 1996-06-26 | 卡伯特公司 | Process for producing carbon blacks |
| CN1829776A (en) * | 2003-08-05 | 2006-09-06 | 三菱化学株式会社 | carbon black |
| CN102007186A (en) * | 2008-02-19 | 2011-04-06 | 卡伯特公司 | Mesoporous carbon black and processes for making same |
| CN101787226A (en) * | 2010-02-11 | 2010-07-28 | 山西永东化工股份有限公司 | Production method of coal tar-based conductive carbon black |
| CN104860492A (en) * | 2015-05-19 | 2015-08-26 | 李宗奎 | Treatment method and system for by-product carbon black mud during acetylene production |
| WO2018140367A1 (en) * | 2017-01-27 | 2018-08-02 | Cabot Corporation | Supercapacitors containing carbon black particles cleaned with an acid |
| CN111303668A (en) * | 2020-03-02 | 2020-06-19 | 乌海黑猫炭黑有限责任公司 | Low-energy-consumption high-pigment carbon black production method and production equipment thereof |
Non-Patent Citations (2)
| Title |
|---|
| 李文骁等: "炭黑氧化改性研究进展", 《染料与染色》 * |
| 段建瑞等: "乙炔炭黑表面氧化改性及对硅橡胶压阻特性的影响", 《高分子材料科学与工程》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113956688A (en) * | 2021-11-24 | 2022-01-21 | 茂名环星新材料股份有限公司 | Carbon black and preparation method and application thereof |
| CN113956688B (en) * | 2021-11-24 | 2022-09-27 | 茂名环星新材料股份有限公司 | Carbon black and preparation method and application thereof |
| CN114085555A (en) * | 2021-11-29 | 2022-02-25 | 苏州宝化炭黑有限公司 | High volume resistivity carbon black, process for its manufacture and its use |
| CN114085555B (en) * | 2021-11-29 | 2023-03-14 | 苏州宝化炭黑有限公司 | High volume resistivity carbon black, process for its manufacture and its use |
| CN115851002A (en) * | 2022-11-03 | 2023-03-28 | 安徽固瑞特新材料科技有限公司 | Wet granulation process for improving intensity of cracked carbon black particles |
| CN115851002B (en) * | 2022-11-03 | 2024-05-07 | 安徽固瑞特新材料科技有限公司 | Wet granulation process for improving strength of cracked carbon black particles |
| CN116196834A (en) * | 2023-03-20 | 2023-06-02 | 金能科技股份有限公司 | Adjusting device of carbon black drying index |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113122027B (en) | 2022-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113122027B (en) | Carbon black and preparation method and application thereof | |
| CN101700885B (en) | Method for preparing activated carbon with high specific surface area | |
| CN102126722A (en) | Process for preparing coal-based agglomerated activated carbon | |
| CN112299849B (en) | Method for preparing battery carbon rod by using regenerated graphite | |
| CN104150479A (en) | Preparation method of doped high-specific-surface-area activated carbon | |
| CN106517188A (en) | Preparing method for coal-based active carbon for controlling environmental protection and control | |
| CN109370267A (en) | A kind of production method of the colour carbon black applied to coating | |
| CN113789068A (en) | High-temperature ultrahigh-conductivity carbon black reaction furnace and method for producing ultrahigh-conductivity carbon black by using raffinate oil of high-temperature ultrahigh-conductivity carbon black reaction furnace | |
| CN108862272B (en) | Method for preparing expanded graphite by using graphene oxide and nano carbon powder | |
| CN110104979A (en) | A method of gangue lightweight aggregate is prepared using belt sintering | |
| CN111847409A (en) | Method for producing ground phosphate rock balls by utilizing ground phosphate rock | |
| DE69202419T2 (en) | Process for the production of fullerenes. | |
| CN102766760B (en) | A tunnel kiln reduction roasting method for high-priced manganese oxide ore | |
| CN111187015B (en) | Cement raw material decomposition accelerator | |
| CN116393115B (en) | Activated carbon hazardous waste treatment process | |
| CN101891407A (en) | A kind of vibration fluidization decomposition method of phosphogypsum | |
| CN117339594A (en) | Raw material composition of carbon-based catalyst, and preparation method and application of carbon-based catalyst | |
| JP7552323B2 (en) | Method for smelting nickel oxide ore | |
| US20140294717A1 (en) | Chemical activation of carbon via a gas atomization method | |
| JP7533160B2 (en) | How to smelt oxide ores | |
| JP2020076132A (en) | Method of smelting oxide ore | |
| JPH05105415A (en) | Production of formed activated coke | |
| CN116496007B (en) | Process method for decomposing lime by microwaves | |
| CN115703632B (en) | Polyimide recovery processing method | |
| JP7547978B2 (en) | Method for smelting nickel oxide ore |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A carbon black and its preparation method and application Effective date of registration: 20231116 Granted publication date: 20220419 Pledgee: Maoming Maonan sub branch of industrial and Commercial Bank of China Ltd. Pledgor: MAOMING HUANXING NEW MATERIAL Co.,Ltd. Registration number: Y2023980065831 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |