CN112226102A - Preparation method of easily-dispersible acetylene black - Google Patents

Preparation method of easily-dispersible acetylene black Download PDF

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Publication number
CN112226102A
CN112226102A CN202011022004.1A CN202011022004A CN112226102A CN 112226102 A CN112226102 A CN 112226102A CN 202011022004 A CN202011022004 A CN 202011022004A CN 112226102 A CN112226102 A CN 112226102A
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carbon black
acetylene
gas
water
black
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徐正华
鲍文录
杨立志
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Shizuishan Huahao Chemical Co ltd
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Shizuishan Huahao Chemical Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44Carbon
    • C09C1/48Carbon black
    • C09C1/54Acetylene black; thermal black ; Preparation thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/60Combinations of devices covered by groups B01D46/00 and B01D47/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

The invention discloses a preparation method of easily-dispersible acetylene black, which relates to the field of carbon black preparation. Through being provided with filtering mechanism, carbon black backward flow mechanism, get into back in the grinding machine when the great carbon black of granule, grinding mechanism can grind the carbon black and smash, and detach the burnt piece, and the carbon black after the grinding can drop to the filter screen of slope, the carbon black of great granule then can be through the filter screen cunning of slope to backward flow mechanism in addition, start the motor on the backward flow mechanism this moment, motor work drives the screw axis and rotates, the screw axis rotates and drives helical blade and rotate, and then can carry the great carbon black of granule to the feed inlet department of grinding machine again, make the great carbon black of granule ground once more and smash, and the carbon black after smashing then can drop to discharge gate department through the filter screen, the filter screen can fully filter the carbon black.

Description

Preparation method of easily-dispersible acetylene black
Technical Field
The invention relates to the field of carbon black preparation, in particular to a preparation method of easily-dispersed acetylene carbon black.
Background
Carbon black is a product obtained by incomplete combustion or pyrolysis of solid, liquid and gaseous hydrocarbons under an anoxic condition, mainly consists of element carbon, is approximately spherical nano particles, and is mostly fused into an aggregate with a branched chain structure at high temperature.
The method is characterized in that the carbon black produced by each process has respective characteristics and is applied to different professional fields, the furnace carbon black is formed by cracking liquid mineral hydrocarbons through heat generated by fuel combustion in a reaction furnace, and the size and the sintering aggregation degree of carbon black particles can be adjusted according to different application requirements to form different products, so that the furnace carbon black is the liquid mineral hydrocarbons with the largest yield and the largest variety in the carbon black industry, but the cracking raw material of the furnace carbon black is the liquid mineral hydrocarbons, and the impurity content of metal elements is high; and the cracking process is an endothermic reaction, the furnace temperature is low, and is usually controlled at 1400-1600 ℃, which results in low graphitization degree and structure degree of furnace carbon black and poor electric conductivity, therefore, the furnace carbon black is mainly used as pigment carbon black and reinforcing agents for various rubbers and tires.
The acetylene gas as the cracking raw material is convenient to purify, so that the content of impurities in the acetylene black is low; the cracking process is exothermic reaction, the furnace temperature is high, the water cooling jacket is usually used for taking away redundant heat, and the cracking temperature can be conveniently controlled to be 1400-plus-2000 ℃, so that the acetylene black has high graphitization degree and structure degree and good conductivity, and is mainly used for the battery industry, antistatic and conductive rubber products. Acetylene black is produced by self-heating pyrolysis of acetylene gas in the absence of air, and belongs to thermal decomposition method carbon black, which is a method for producing carbon black by intermittently (i.e. two stages of combustion heat storage and thermal decomposition) or continuously (single thermal decomposition) thermally cracking natural gas or acetylene gas in the absence of air in a preheated reaction furnace.
In the existing preparation method of acetylene black, carbon black with larger particles is ground and crushed in the process of preparing the carbon black, but in the grinding process, as complete crushing of the carbon black with larger particles cannot be guaranteed, partial carbon black which is not completely crushed may enter the next procedure along with the completely crushed carbon black, so that the preparation effect of subsequent carbon black is influenced; simultaneously in the process of carrying out compression packing to carbon black, can use the fan to take away the discharge with the gas that produces in the compression process, and do not carry out effectual processing to this gas, but because probably be mingled with particulate impurity in the gas of taking away, if direct emission in the air can cause the pollution to the environment.
Disclosure of Invention
The invention aims to: the preparation method of the easily-dispersible acetylene black aims to solve the problem that some large carbon blacks are not completely crushed in the grinding process, are put into the next process, and are discharged outdoors without being effectively treated by gas pumped by a fan in the compression packaging process, so that environmental pollution is easily caused.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of easily dispersible acetylene black comprises the steps of acetylene gas preparation, acetylene cracking, grinding, cyclone separator treatment, compression and gas discharge treatment, wherein an open type combustion furnace is arranged in the acetylene cracking, and the preparation method of the acetylene black comprises the following steps:
the method comprises the following steps: preparation of acetylene gas
Adding calcium carbide into an acetylene generator, reacting with water to obtain acetylene gas, cooling, washing and purifying the acetylene gas, and separating steam from water to enter a gas holder for producing acetylene black;
step two: cracking acetylene
Acetylene gas from an acetylene gas cabinet enters an open type combustion furnace through a flame arrester, a water seal and a pore plate flowmeter, is isolated from air cracking to generate acetylene black and hydrogen, is internally provided with an annular scraper and an acetylene nozzle coke poking device, reciprocates up and down at the frequency of sub 5478 to scrape off the carbon black adhered to the furnace wall and poke off a coke block formed at the head of the acetylene nozzle, and low-temperature hydrogen-rich tail gas returned from the rear part is introduced at the upper part of the inverted cone of the open type combustion furnace to cut off flame and cool to stop the carbon black reaction, and the carbon black and the hydrogen are discharged from the furnace bottom, are conveyed and cooled by a spiral conveyor with a water jacket, and enter a grinding machine after passing through two-stage spiral conveyors;
step three: grinding process
The grinding machine is internally provided with a grinding mechanism, a filtering mechanism and a carbon black backflow mechanism, after carbon black with larger particles enters the grinding machine, the grinding mechanism can grind and crush the carbon black and remove coke blocks, the ground carbon black can fall onto an inclined filter screen, the carbon black with larger particles can enter the backflow mechanism through the filtering mechanism and is conveyed to the feed inlet of the grinding machine again through a screw conveyer in the backflow mechanism, so that the carbon black with larger particles is ground and crushed again, and the crushed carbon black can fall to the discharge outlet through the filter screen;
step four: cyclone treatment
Pumping the carbon black obtained in the step three into a slag remover through a fan, removing slag through the slag remover, then enabling the carbon black to enter a two-stage cyclone separator, discharging the collected carbon black through respective storage hoppers by an air valve, further collecting the carbon black through a pulse bag filter by hydrogen-rich tail gas discharged from a volute of the two-stage cyclone separator, returning a part of hydrogen to the open type combustion furnace through a return pipe, and sending the rest of hydrogen to a combustion or other comprehensive utilization devices;
step five: compression packaging process
Carbon black discharged from the two-stage cyclone separator airtight valve and the pulse filter bag device airtight valve enters a screw compressor through a screw conveyor to be compressed, air in the carbon black is removed and compressed in the screw compressor, and then the carbon black is compressed; removing air in the carbon black in a screw compressor, compressing the carbon black to obtain a compressed product of 1 or 1 as a final product, and packaging the carbon black product;
step six: gas emission treatment
The gas pumped by the screw compressor is filled into the purification box, the purification box is filled with water and is provided with a plurality of layers of filter screens and an active carbon layer, after the gas is filled into the water in the purification box, impurities dissolved in the water in the gas can be adsorbed by the water, the gas can pass through the plurality of layers of filter screens and the active carbon layer after being washed by the water, the filter screens and the active carbon layer can filter and eliminate the impurities which are not dissolved in the water, the air pollution caused by the direct discharge of the impurities into the air is avoided, and the gas is discharged to the outside after being filtered and purified; the water in the purifying box can be replaced, and the filter screen and the active carbon layer can be detached and replaced.
Preferably, a driving mechanism is further provided in the open-type combustion furnace in the second step, the driving mechanism can drive the annular scraper to move up and down, the annular scraper is in contact with the inner wall of the open-type combustion furnace, and the annular scraper is made of stainless steel material.
Preferably, in the second step, the inside of the open-type combustion furnace, the scraper and the acetylene gas nozzle are all provided with water-cooling jackets for cooling.
Preferably, in the fifth step, a circular outer sleeve is inlaid on the compression section shaft of the screw compressor, the outer diameter of the circular outer sleeve is gradually increased from small to large, and the conical sleeve is provided with screw blades with the screw pitch gradually decreased from large and the outer diameter of the conical outer sleeve is equal.
Preferably, in the second step, the open combustion furnace is lined with a carbon (graphite) heat-resistant layer, and the outer surface of the open combustion furnace is coated with a rust-proof paint.
Preferably, the reaction temperature in the open type combustion furnace is controlled to be 1400-1800 ℃ in the second step.
Preferably, the top of purifying box is provided with the inlet tube, one side below of purifying box is provided with the drain pipe, the surface mounting of drain pipe has the solenoid valve.
Preferably, the grinding mechanism comprises a driving motor, a driving shaft and a grinding roller, the carbon black backflow mechanism comprises a backflow cylinder, a motor, a spiral shaft, a spiral blade and a material return pipe, and the filtering mechanism comprises a filter screen.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the carbon black grinding machine, the filtering mechanism and the carbon black backflow mechanism are arranged, when carbon black with larger particles enters the grinding machine, the grinding mechanism can grind and crush the carbon black and remove coke blocks, the ground carbon black can fall onto the inclined filter screen, the carbon black with larger particles can slide to the backflow mechanism through the inclined filter screen, at the moment, a motor on the backflow mechanism can be started, the motor works to drive the spiral shaft to rotate, the spiral shaft rotates to drive the spiral blades to rotate, and further the carbon black with larger particles can be conveyed to the feeding port of the grinding machine again to be ground and crushed again, so that the grinding efficiency of the carbon black is improved, the crushed carbon black can fall to the discharging port through the filter screen, and the filter screen can fully filter the carbon black.
2. The invention is provided with the purifying box, the filter screen and the active carbon layer, the gas pumped by the screw compressor can be filled into the purifying box, the purifying box is filled with water, and is provided with a plurality of layers of filter screens and active carbon layers, after the gas is filled into the water in the purifying box, some impurities dissolved in the water in the gas can be absorbed by the water, further, the gas can be washed, and can pass through a plurality of layers of filter screens and active carbon layers after being washed, the filter screen and the active carbon layer can filter and eliminate impurities which are insoluble in water again, the gas is discharged to the outside after being filtered and purified, the pollution of the air caused by directly discharging the impurities in the gas to the air is avoided, thereby improving the environment for protection, when the water in the purifying box needs to be replaced, the water in the purifying box can be discharged through the drain pipe only by opening the electromagnetic valve, and then made things convenient for the user to change water, filter screen and active carbon layer all can be dismantled simultaneously and change.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.
The first embodiment is as follows:
the invention provides a technical scheme that: a preparation method of easily dispersible acetylene black comprises the steps of acetylene gas preparation, acetylene cracking, grinding, cyclone separator treatment, compression and gas discharge treatment, wherein an open type combustion furnace is arranged in the acetylene cracking, and the preparation method of the acetylene black comprises the following steps:
the method comprises the following steps: preparation of acetylene gas
Adding calcium carbide into an acetylene generator, reacting with water to obtain acetylene gas, cooling, washing and purifying the acetylene gas, and separating steam from water to enter a gas holder for producing acetylene black;
step two: cracking acetylene
Acetylene gas from an acetylene gas cabinet enters an open type combustion furnace through a flame arrester, a water seal and a pore plate flowmeter, is isolated from air cracking to generate acetylene black and hydrogen, is internally provided with an annular scraper and an acetylene nozzle coke poking device, reciprocates up and down at the frequency of sub 5478 to scrape off the carbon black adhered to the furnace wall and poke off a coke block formed at the head of the acetylene nozzle, and low-temperature hydrogen-rich tail gas returned from the rear part is introduced at the upper part of the inverted cone of the open type combustion furnace to cut off flame and cool to stop the carbon black reaction, and the carbon black and the hydrogen are discharged from the furnace bottom, are conveyed and cooled by a spiral conveyor with a water jacket, and enter a grinding machine after passing through two-stage spiral conveyors;
step three: grinding process
The grinding machine is internally provided with a grinding mechanism, a filtering mechanism and a carbon black backflow mechanism, after carbon black with larger particles enters the grinding machine, the grinding mechanism can grind and crush the carbon black and remove coke blocks, the ground carbon black can fall onto an inclined filter screen, the carbon black with larger particles can enter the backflow mechanism through the filtering mechanism and is conveyed to the feed inlet of the grinding machine again through a screw conveyer in the backflow mechanism, so that the carbon black with larger particles is ground and crushed again, and the crushed carbon black can fall to the discharge outlet through the filter screen;
step four: cyclone treatment
Pumping the carbon black obtained in the step three into a slag remover through a fan, removing slag through the slag remover, then enabling the carbon black to enter a two-stage cyclone separator, discharging the collected carbon black through respective storage hoppers by an air valve, further collecting the carbon black through a pulse bag filter by hydrogen-rich tail gas discharged from a volute of the two-stage cyclone separator, returning a part of hydrogen to the open type combustion furnace through a return pipe, and sending the rest of hydrogen to a combustion or other comprehensive utilization devices;
step five: compression packaging process
Carbon black discharged from the two-stage cyclone separator airtight valve and the pulse filter bag device airtight valve enters a screw compressor through a screw conveyor to be compressed, air in the carbon black is removed and compressed in the screw compressor, and then the carbon black is compressed; removing air in the carbon black in a screw compressor, compressing the carbon black to obtain a compressed product of 1 or 1 as a final product, and packaging the carbon black product;
step six: gas emission treatment
The gas pumped by the screw compressor is filled into the purification box, the purification box is filled with water and is provided with a plurality of layers of filter screens and an active carbon layer, after the gas is filled into the water in the purification box, impurities dissolved in the water in the gas can be adsorbed by the water, the gas can pass through the plurality of layers of filter screens and the active carbon layer after being washed by the water, the filter screens and the active carbon layer can filter and eliminate the impurities which are not dissolved in the water, the air pollution caused by the direct discharge of the impurities into the air is avoided, and the gas is discharged to the outside after being filtered and purified; the water in the purifying box can be replaced, and the filter screen and the active carbon layer can be detached and replaced.
Furthermore, a driving mechanism is also arranged in the open type combustion furnace in the second step, the driving mechanism can drive the annular scraper to move up and down, the annular scraper is in contact with the inner wall of the open type combustion furnace and is made of stainless steel materials, the annular scraper can scrape off the carbon black on the inner wall of the open type combustion furnace, so that the carbon black is prevented from being attached to the open type combustion furnace and being difficult to clean, and the cleaning efficiency of the carbon black on the inner wall of the open type combustion furnace is improved; in the second step, the inside of the open type combustion furnace, the scraper and the acetylene gas nozzle are all provided with water cooling jackets for cooling, and the inside of the open type combustion furnace, the scraper and the acetylene gas nozzle can be cooled.
Furthermore, a circular outer sleeve is inlaid on a compression section shaft on the screw compressor in the step five, the outer diameter of the circular outer sleeve is gradually increased from small to large, and the conical sleeve is provided with screw blades with the screw pitches gradually decreased from large and the outer diameters of the screw blades are equal, so that carbon black can be conveniently compressed; in the second step, the open type combustion furnace is lined with a carbon (graphite) heat-resistant layer, and the outer surface of the open type combustion furnace is coated with the antirust paint, so that the heat resistance of the inner wall of the open type combustion furnace is improved, the antirust paint can improve the antirust effect of the open type combustion furnace, and the service life of the open type combustion furnace is prolonged.
Further, in the second step, the reaction temperature in the open type combustion furnace is controlled to be 1400-1800 ℃; the top of purifying box is provided with the inlet tube, one side below of purifying box is provided with the drain pipe, the surface mounting of drain pipe has the solenoid valve, conveniently discharges the log raft in the purifying box, and then can change water.
Further, grind mechanism includes driving motor, drive shaft and grinding roller, carbon black return mechanism includes a backward flow section of thick bamboo, motor, screw axis, helical blade and feed back pipe, filtering mechanism includes the filter screen, and the filter screen can filter the carbon black, and the great granule of particle diameter can pass through the filter screen cunning to the return mechanism in, carries the feed inlet department to the machine of grinding again through return mechanism again, and then can improve the grinding efficiency to the carbon black.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (8)

1. The preparation method of the easily dispersible acetylene black comprises the steps of acetylene gas preparation, acetylene cracking, grinding, cyclone separator treatment, compression and gas discharge treatment, and is characterized in that: the cracking acetylene is provided with an open type combustion furnace, and the preparation method of the acetylene black comprises the following steps:
the method comprises the following steps: preparation of acetylene gas
Adding calcium carbide into an acetylene generator, reacting with water to obtain acetylene gas, cooling, washing and purifying the acetylene gas, and separating steam from water to enter a gas holder for producing acetylene black;
step two: cracking acetylene
Acetylene gas from an acetylene gas cabinet enters an open type combustion furnace through a flame arrester, a water seal and a pore plate flowmeter, is isolated from air cracking to generate acetylene black and hydrogen, is internally provided with an annular scraper and an acetylene nozzle coke poking device, reciprocates up and down at the frequency of sub 5478 to scrape off the carbon black adhered to the furnace wall and poke off a coke block formed at the head of the acetylene nozzle, and low-temperature hydrogen-rich tail gas returned from the rear part is introduced at the upper part of the inverted cone of the open type combustion furnace to cut off flame and cool to stop the carbon black reaction, and the carbon black and the hydrogen are discharged from the furnace bottom, are conveyed and cooled by a spiral conveyor with a water jacket, and enter a grinding machine after passing through two-stage spiral conveyors;
step three: grinding process
The grinding machine is internally provided with a grinding mechanism, a filtering mechanism and a carbon black backflow mechanism, after carbon black with larger particles enters the grinding machine, the grinding mechanism can grind and crush the carbon black and remove coke blocks, the ground carbon black can fall onto an inclined filter screen, the carbon black with larger particles can enter the backflow mechanism through the filtering mechanism and is conveyed to the feed inlet of the grinding machine again through a screw conveyer in the backflow mechanism, so that the carbon black with larger particles is ground and crushed again, and the crushed carbon black can fall to the discharge outlet through the filter screen;
step four: cyclone treatment
Pumping the carbon black obtained in the step three into a slag remover through a fan, removing slag through the slag remover, then enabling the carbon black to enter a two-stage cyclone separator, discharging the collected carbon black through respective storage hoppers by an air valve, further collecting the carbon black through a pulse bag filter by hydrogen-rich tail gas discharged from a volute of the two-stage cyclone separator, returning a part of hydrogen to the open type combustion furnace through a return pipe, and sending the rest of hydrogen to a combustion or other comprehensive utilization devices;
step five: compression packaging process
Carbon black discharged from the two-stage cyclone separator airtight valve and the pulse filter bag device airtight valve enters a screw compressor through a screw conveyor to be compressed, air in the carbon black is removed and compressed in the screw compressor, and then the carbon black is compressed; removing air in the carbon black in a screw compressor, compressing the carbon black to obtain a compressed product of 1 or 1 as a final product, and packaging the carbon black product;
step six: gas emission treatment
The gas pumped by the screw compressor is filled into the purification box, the purification box is filled with water and is provided with a plurality of layers of filter screens and an active carbon layer, after the gas is filled into the water in the purification box, impurities dissolved in the water in the gas can be adsorbed by the water, the gas can pass through the plurality of layers of filter screens and the active carbon layer after being washed by the water, the filter screens and the active carbon layer can filter and eliminate the impurities which are not dissolved in the water, the air pollution caused by the direct discharge of the impurities into the air is avoided, and the gas is discharged to the outside after being filtered and purified; the water in the purifying box can be replaced, and the filter screen and the active carbon layer can be detached and replaced.
2. The method for preparing the easily dispersible acetylene black according to claim 1, wherein the method comprises the following steps: and step two, a driving mechanism is also arranged in the open type combustion furnace and can drive the annular scraper to move up and down, the annular scraper is in contact with the inner wall of the open type combustion furnace and is made of stainless steel materials.
3. The method for preparing the easily dispersible acetylene black according to claim 1, wherein the method comprises the following steps: and in the second step, the inside of the open type combustion furnace, the scraper and the acetylene gas nozzle are all provided with water cooling jackets for cooling.
4. The method for preparing the easily dispersible acetylene black according to claim 1, wherein the method comprises the following steps: and in the fifth step, a circular outer sleeve is inlaid on a compression section shaft on the screw compressor, the outer diameter of the circular outer sleeve is gradually increased from small to large, and the conical sleeve is provided with screw blades with the screw pitches gradually decreased from large and the outer diameters of the screw blades are equal.
5. The method for preparing the easily dispersible acetylene black according to claim 1, wherein the method comprises the following steps: in the second step, the open type combustion furnace is lined with a carbon (graphite) heat-resistant layer, and the outer surface of the open type combustion furnace is coated with antirust paint.
6. The method for preparing the easily dispersible acetylene black according to claim 1, wherein the method comprises the following steps: in the second step, the reaction temperature in the open type combustion furnace is controlled to be 1400-1800 ℃.
7. The method for preparing the easily dispersible acetylene black according to claim 1, wherein the method comprises the following steps: the top of purifying box is provided with the inlet tube, one side below of purifying box is provided with the drain pipe, the surface mounting of drain pipe has the solenoid valve.
8. The method for preparing the easily dispersible acetylene black according to claim 1, wherein the method comprises the following steps: the grinding mechanism comprises a driving motor, a driving shaft and a grinding roller, the carbon black backflow mechanism comprises a backflow cylinder, a motor, a spiral shaft, spiral blades and a material return pipe, and the filtering mechanism comprises a filter screen.
CN202011022004.1A 2020-09-25 2020-09-25 Preparation method of easily-dispersible acetylene black Pending CN112226102A (en)

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CN114213877A (en) * 2021-12-21 2022-03-22 焦作市和兴化学工业有限公司 Acetylene black production system, acetylene black and preparation method thereof
CN114381145A (en) * 2021-12-15 2022-04-22 焦作市和兴化学工业有限公司 Preparation method of low-viscosity acetylene carbon black

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