CN210419828U - Device for carrying out high-temperature treatment on carbon black in oxygen-free state - Google Patents
Device for carrying out high-temperature treatment on carbon black in oxygen-free state Download PDFInfo
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- CN210419828U CN210419828U CN201921346252.4U CN201921346252U CN210419828U CN 210419828 U CN210419828 U CN 210419828U CN 201921346252 U CN201921346252 U CN 201921346252U CN 210419828 U CN210419828 U CN 210419828U
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Abstract
The utility model relates to a device for high-temperature treatment of carbon black under anaerobic condition, which comprises a feeding screw, a distilling furnace and a cooling reaction device, wherein the distilling furnace comprises a furnace chamber, a furnace wall with a jacket and a combustion furnace communicated with the furnace wall, a discharge pipeline is arranged on the furnace wall of the distilling furnace, the furnace chamber comprises a material pouring groove and a stirring device, the material pouring groove is arranged at the bottom of the furnace chamber just facing a discharge hole of the feeding screw, one end of the cooling reaction device is sequentially communicated with a water cooling device of the discharge pipeline, a water washing device, an ice freezing device, an active carbon adsorption device, a piston type reciprocating compressor and a piston type reciprocating compressor, a liquid carbon dioxide adding device is arranged on a pipeline between the active carbon adsorption device and the piston type reciprocating compressor, a polycyclic aromatic hydrocarbon collecting device is horizontally arranged at the bottom of the water cooling device, the water washing device and the freezing device, the, reduces the toxicity and harm of the carbon black to human body.
Description
Technical Field
The utility model belongs to the technical field of carbon black production, a device that carries out high temperature treatment to carbon black under anaerobic condition is related to, through carrying out distillation treatment to carbon black to take off the polycyclic aromatic hydrocarbon on carbon black surface, realized the thorough desorption of carbon black surface polycyclic aromatic hydrocarbon, thoroughly reduced the toxicity of carbon black and the harm to the human body.
Background
Carbon black is an important chemical raw material, has strong reinforcing and wear-resisting properties, is used in rubber, and is widely applied to daily necessities such as printing ink, coating, paint and the like. Carbon black is sometimes used in the fields of food tableware, kitchen utensils and the like, and in such cases, carbon black is required to have low toxicity, a minimum content of polycyclic aromatic hydrocarbon, and to prevent damage to the human body.
The high polycyclic aromatic hydrocarbon content in the raw oil of the carbon black is beneficial to the production of the carbon black, the precursor generated by the carbon black is a polycyclic aromatic hydrocarbon substance, and the polycyclic aromatic hydrocarbon can be extracted only under the action of solvents such as toluene and acetone because aromatic hydrocarbon compounds in the carbon black are difficult to desorb, but if the method is used for processing the carbon black to reduce the polycyclic aromatic hydrocarbon content, the solvents also belong to toxic and harmful substances, and secondary pollution can be caused to carbon black products,
the method for removing polycyclic aromatic hydrocarbons by distilling carbon black is an effective mode, but the burning point of the carbon black is low (at 300-350 ℃), the carbon black is easy to burn due to oxygen contained in the carbon black during treatment to generate carbon monoxide or carbon dioxide, and the desorption of the polycyclic aromatic hydrocarbons is incomplete at a low temperature, so that the conventional high-temperature treatment mode cannot be implemented.
Therefore, it is an inevitable problem that a certain amount of polycyclic aromatic hydrocarbon remains in the carbon black. The polycyclic aromatic hydrocarbon substances have carcinogenic properties and belong to harmful substances controlled in a limited amount by international organizations such as European Union, so that how to reduce the polycyclic aromatic hydrocarbon content of the carbon black and produce carbon black products with lower polycyclic aromatic hydrocarbon content becomes a technical problem to be solved by the carbon black industry.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a carry out high temperature treatment's device to carbon black under the anaerobic condition, reduce the polycyclic aromatic hydrocarbon content of carbon black, improve the environmental protection index, produce the carbon black product that polycyclic aromatic hydrocarbon is lower.
The utility model discloses a realize through following technical scheme:
a device for carrying out high-temperature treatment on carbon black in an oxygen-free state is characterized in that: the device comprises a feeding screw, a distillation furnace and a cooling reaction device, wherein the distillation furnace comprises a furnace chamber, a furnace wall with a jacket and a combustion furnace communicated with the furnace wall, a discharge pipeline is arranged on the furnace wall of the distillation furnace, the furnace chamber comprises a material pouring groove and a stirring device, the material pouring groove is positioned at the bottom of the furnace chamber just opposite to a discharge hole of the feeding screw, the cooling reaction device comprises a water cooling device, a water washing device, a freezing device, an active carbon adsorption device, a piston type reciprocating compressor and a piston type reciprocating compressor which are sequentially communicated with the discharge pipeline, a liquid carbon dioxide adding device is positioned on a pipeline between the active carbon adsorption device and the piston type reciprocating compressor, and a polycyclic aromatic hydrocarbon collecting device is horizontally arranged at the bottoms of the water cooling. One end of the inert gas inlet pipe is connected with the piston type reciprocating compressor, and the other end of the inert gas inlet pipe is connected with the distillation furnace.
The high temperature treatment refers to 300-1100 ℃.
Carbon black enters the distillation furnace through the feeding device to be subjected to high-temperature distillation, is discharged through the discharging pipeline, and is packaged after being cooled through the cooling device. The waste gas generated by distillation is treated into clean gas by the condensing and filtering device and then is recycled by the recycling device, and the inert gas filling device keeps the interior of the distillation furnace in a non-oxygen state all the time.
Preferably, the combustion furnace is divided into a first combustion furnace and a second combustion furnace which are arranged in series on the wall of the distillation furnace.
The distillation furnace wall is provided with a jacket, the combustion furnace heats the outer wall of the furnace body by burning natural gas, the inner wall of the distillation furnace is made of refractory materials, and the combustion of the combustion furnace supplies temperature to the jacket, so that the furnace wall keeps a certain temperature.
Preferably, the distillation furnace is insulated from oxygen and is fed with high purity inert gas.
The method has the advantages that the characteristic that inert gas does not cause combustion is utilized, oxygen is isolated, liquid carbon dioxide is added to convey high-purity inert gas to the calcining furnace, high-temperature desorption treatment can be carried out on carbon black in an oxygen-free state, the purposes of eliminating polycyclic aromatic hydrocarbon on the surface of the carbon black and safely producing can be achieved, if deoxidation treatment is not carried out, in the high-temperature treatment process of the carbon black, due to the fact that surplus air is contained, partial incomplete combustion reaction occurs and the heat flow of flue gas flow is increased, carbon black is easily combusted due to the fact that oxygen is contained during high-temperature treatment, carbon monoxide or carbon dioxide is generated, and secondary.
Preferably, a sealing device is adopted between the feeding screw and the distillation furnace.
The sealing device adopts a fast-assembling bayonet, the graphite packing is arranged in the sealing device, the sealed feeding device can continuously and uniformly supply materials, and the inert gas in the distillation furnace is prevented from leaking, the material quantity is controllable, and the inert gas is prevented from being oxidized at high temperature before entering the distillation furnace.
Preferably, the inert gas introduction pipe extends into the distillation furnace and is provided with a gas hole for introducing inert gas.
The added carbon dioxide and the circulated inert gas are sent into the distillation furnace through a conveying pipeline, and the gas holes on the inert gas inlet pipe are convenient for distributing the inert gas in the furnace body more uniformly.
Further preferably, a stirring motor is arranged on the extension pipeline at the outlet end of the stirring device.
The stirring device is provided with a sealing device at the joint of the stirring device and the furnace body, and the stirring device is provided with a motor which rotates to drive stirring and provides power for the stirring device so as to drive the stirring device to stir materials more fully.
Further preferably, the inner wall of the distillation furnace is made of refractory materials made of aluminum oxide and zirconia.
The inner wall of the distillation furnace is made of refractory materials made of aluminum oxide and zirconia, the distillation furnace can endure high temperature of over 1100 ℃ for a long time, and all outlet parts of the furnace body are provided with sealing devices to ensure the sealing state of the distillation furnace, so that the material treatment process is always in an oxygen-free state.
Further preferably, the material screw, the distillation furnace and the cooling reaction device are all connected with a DCS automatic control system.
The DCS automatic control system is arranged at the tail end of the whole device, and the distributed control system is centralized in operation display and distributed in control function and can realize automatic control of the whole operation.
And the carbon black enters the distillation furnace through the feeding device for high-temperature distillation, is discharged through the discharging device, and is packaged after being cooled through the cooling device. The waste gas generated by distillation is treated into clean gas by the condensing and filtering device and then is recycled by the recycling device, and the inert gas filling device keeps the interior of the distillation furnace in a non-oxygen state all the time.
The utility model discloses following beneficial effect has:
the utility model discloses having developed a device that carries out high temperature treatment to carbon black under anaerobic condition, through the implementation of this project technique, having realized the thorough desorption of carbon black surperficial polycyclic aromatic hydrocarbon, can adjust the environmental protection index of carbon black at any time according to customer's requirement and index, satisfy the demand of different customer standards, not only realized the application of carbon black in fields such as daily necessities, food tableware, kitchen utensil, made this carbon black can the trace be applied to food colorant moreover.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic flow diagram of an apparatus for high temperature treatment of carbon black in the absence of oxygen;
in the drawings, the components represented by the respective reference numerals are listed below:
1-a feeding bin, 2-a feeding screw, 3 a sealing device, 4-a pouring trough, 5-a first combustion furnace, 6-a second combustion furnace, 7-a discharging pipeline, 8 a stirring motor, 9 a stirring device, 10 an inert gas inlet pipe, 11 a finished product bin, 12 circulating condensed water, 13 a water cooling device, 14 a water washing device, 15 a freezing device, 16 an activated carbon adsorption device, 17 a liquid carbon dioxide adding device, 18 a polycyclic aromatic hydrocarbon collecting device, 19 a piston type reciprocating compressor and 20 a DCS automatic control system.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
Example 1
As shown in figure 1, a device for high-temperature treatment of carbon black in an oxygen-free state is provided, which comprises a feeding screw 2, a distilling furnace and a cooling reaction device, wherein the discharging end of a feeding bin 1 is connected with the feeding hole of the feeding screw 2 through a regulating valve, the discharging hole of the feeding screw 2 is connected with the inlet end of the distilling furnace, the feeding screw 2 is hermetically connected with a furnace body, the distilling furnace 2 comprises a furnace chamber, a furnace wall with a jacket and a first combustion furnace 5 and a second combustion furnace 6 communicated with the furnace wall, the first combustion furnace 5 and the second combustion furnace 6 supply certain temperature to the furnace wall by burning natural gas, an elastic support is designed in the distilling furnace to ensure that an equipment shell is kept at 300-1100 ℃ for a long time and continuously operated at high temperature without softening, oxidation and deformation, the furnace chamber comprises a stirring device 9, a hanging fixed screw, a material pouring groove 4 and a closed discharging valve, and the inert gas in the distillation furnace is ensured not to leak, the carbon black is not oxidized by high temperature and is not spontaneously combusted before entering the bin, the material pouring groove 4 is positioned at the bottom of the furnace chamber opposite to the discharge hole of the feeding screw 2, the material flows into the finished product bin 11 through the stirring of the stirring device 9 through the discharge pipeline 7, the outlet of the finished product bin 11 is provided with a control valve, the outside of the finished product bin 11 is circulating condensate water for cooling the material, the upper furnace wall is provided with a discharge pipeline, the cooling reaction device is designed to realize countercurrent bidirectional heat exchange, the material flows among the heat exchange tubes in multidimensional contact, the heat exchange tubes are provided with radiating anchoring nails on the surface for forced heat exchange to improve the cooling and heat exchange efficiency, the cooling device comprises a water cooling device 13, a water washing device 14, a freezing device 15, an active carbon adsorption device 16, a piston type reciprocating compressor 19 and a liquid carbon dioxide adding device 17 which are sequentially communicated with the discharge pipeline, the polycyclic aromatic hydrocarbon collecting device 18 is horizontally arranged at the bottoms of the water cooling device 13, the water washing device 14 and the freezing device 15. One end of the inert gas inlet pipe is connected with the piston type reciprocating compressor 19, the other end of the inert gas inlet pipe is connected with the distillation furnace and extends into the distillation furnace, the inert gas required by high-temperature treatment in the furnace body is pumped into the distillation furnace by the piston type reciprocating compressor 19, and the purified distillation gas is changed into clean inert gas again, so that continuous cyclic utilization is realized.
Through research and development of a high-temperature calcining furnace, oxygen is isolated, the characteristic that inert gas does not cause combustion is utilized, carbon dioxide is added to the calcining furnace to convey high-purity inert gas, and high-temperature desorption treatment is carried out on carbon black in an oxygen-free environment, so that the purposes of eliminating polycyclic aromatic hydrocarbon on the surface of the carbon black and producing the carbon black safely are achieved; if the deoxidation treatment is not carried out, in the high-temperature treatment process of the carbon black, because excess air is contained, partial incomplete combustion reaction occurs and the heat flow of flue gas flow is increased, and during the high-temperature treatment, the carbon black is easy to combust due to the oxygen contained, carbon monoxide or carbon dioxide is generated, and secondary pollution is caused.
Example 2
As shown in figure 1, a device for high-temperature treatment of carbon black in an oxygen-free state is provided, which comprises a feeding screw 2, a distilling furnace and a cooling reaction device, wherein the discharging end of a feeding bin 1 is connected with the feeding hole of the feeding screw 2 through a regulating valve, the discharging hole of the feeding screw 2 is connected with the inlet end of the distilling furnace, the feeding screw 2 is hermetically connected with a furnace body, the distilling furnace 2 comprises a furnace chamber, a furnace wall with a jacket and a first combustion furnace 5 and a second combustion furnace 6 which are communicated with the furnace wall, the first combustion furnace 5 and the second combustion furnace 6 supply certain temperature to the furnace wall by burning natural gas, an elastic support is designed in the distilling furnace to ensure that an equipment shell is not softened, oxidized and deformed when the body is continuously operated at high temperature of 300-1100 ℃ for a long time, the furnace shell comprises a furnace chamber stirring device 9, a suspension fixed screw, a material pouring groove 4 and, and the inert gas in the distillation furnace is ensured not to leak, the carbon black is not oxidized by high temperature and is not spontaneously combusted before entering the bin, the material pouring groove 4 is positioned at the bottom of the furnace chamber which is opposite to the discharge hole of the feeding screw 2, the material flows into the finished product bin 11 through the stirring of the stirring device 9 through the discharge pipeline 7, the outlet of the finished product bin 11 is provided with a control valve, the outside of the finished product bin 11 is provided with annular condensed water for cooling the material, the upper furnace wall is provided with a discharge pipeline, the cooling reaction device is designed to realize countercurrent bidirectional heat exchange, the material flows among the heat exchange tubes through unique double-tube circulation, the cooling anchor nails are designed on the surfaces of the heat exchange tubes for carrying out forced heat exchange, the cooling and heat exchange efficiency is improved, the cooling and heat exchange efficiency comprises a water cooling device 13, a water washing device 14, a freezing device 15, an active carbon adsorption device 16, a piston type reciprocating compressor 19 and a, the polycyclic aromatic hydrocarbon collecting device 18 is horizontally arranged at the bottoms of the water cooling device 13, the water washing device 14 and the freezing device 15. One end of the inert gas inlet pipe is connected with the piston type reciprocating compressor 19, the other end of the inert gas inlet pipe is connected with the distillation furnace and extends into the distillation furnace, the inert gas required by high-temperature treatment in the furnace body is pumped into the distillation furnace by the piston type reciprocating compressor 19, and the purified distillation gas is changed into clean inert gas again, so that continuous cyclic utilization is realized.
After materials enter a furnace body, the materials are poured into a pouring groove 4 and then stirred, the materials are poured into the furnace body from the pouring groove and then sent into the furnace body, inert gas required by high-temperature treatment in the furnace body is pumped into the furnace body by a piston type reciprocating compressor 19, the materials are continuously stirred in the furnace body by a stirring device 9 driven by a stirring motor 8 and uniformly heated, a first combustion furnace and a second combustion furnace heat the outer wall of the furnace body by burning natural gas, the treated materials enter a finished product bin 11 from a discharge pipeline 7 for cooling, polycyclic aromatic hydrocarbon distilled out by a distillation furnace enters a discharge channel at the upper part of the furnace body, firstly enters a first water cooling device 13 for recovery, then enters a water washing device 14 for recovery again, and then enters a freezing device 15 for recovery, the distilled gas contains various harmful substances such as polycyclic aromatic hydrocarbon volatilized and distilled out from carbon black, and the like, the water cooling device 13 condenses and collects the, then the gas is recycled again through the water washing device 14, then the low boiling point substance is condensed and collected through the freezing device 15, the desorbed polycyclic aromatic hydrocarbon gas is thoroughly condensed and changed into liquid and then is collected through the polycyclic aromatic hydrocarbon collecting device 18, the liquid is recycled through the activated carbon adsorption device 16, the residual gas circulates through the piston type reciprocating compressor 19 and enters the furnace body, a carbon dioxide adding device 17 is arranged at the stage to ensure that the inside of the distillation furnace is always in an oxygen-free state, the added carbon dioxide and the circulated inert gas are sent into the inside of the distillation furnace through the conveying pipeline 10, and the whole set of device is provided with a DCS automatic control system 20 to realize automatic control.
Claims (8)
1. A device for carrying out high-temperature treatment on carbon black in an oxygen-free state is characterized in that:
comprises a feeding screw, a distillation furnace and a cooling reaction device,
the distillation furnace comprises a furnace chamber, a furnace wall with a jacket and a combustion furnace communicated with the furnace wall, a discharge pipeline is arranged on the upper furnace wall of the distillation furnace,
the furnace chamber comprises a material pouring groove and a stirring device, the material pouring groove is positioned at the bottom of the furnace chamber opposite to the feeding spiral discharge hole,
the cooling reaction device comprises a water cooling device, a water washing device, a freezing device, an active carbon adsorption device, a piston type reciprocating compressor and a piston type reciprocating compressor which are sequentially communicated with a discharge pipeline, a liquid carbon dioxide adding device is positioned on a pipeline between the active carbon adsorption device and the piston type reciprocating compressor, a polycyclic aromatic hydrocarbon collecting device is horizontally arranged at the bottoms of the water cooling device, the water washing device and the freezing device, one end of an inert gas leading-in pipe is connected with the piston type reciprocating compressor, and the other end of the inert gas leading-in pipe is connected with the distillation furnace.
2. The apparatus for the high temperature treatment of carbon black in the absence of oxygen of claim 1, wherein: the combustion furnace is divided into a first combustion furnace and a second combustion furnace which are arranged in series on the wall of the distillation furnace.
3. The apparatus for the high temperature treatment of carbon black in the absence of oxygen of claim 1, wherein: the inside of the distillation furnace is isolated from oxygen, and high-purity inert gas is conveyed.
4. The apparatus for the high temperature treatment of carbon black in the absence of oxygen of claim 1, wherein: a sealing device is adopted between the feeding screw and the distillation furnace.
5. The apparatus for the high temperature treatment of carbon black in the absence of oxygen of claim 1, wherein: the inert gas inlet pipe extends into the distillation furnace and is provided with a plurality of holes for introducing inert gas.
6. The apparatus for the high temperature treatment of carbon black in the absence of oxygen of claim 1, wherein: and a stirring motor is arranged on the extension pipeline at the outlet end of the stirring device.
7. The apparatus for the high temperature treatment of carbon black in the absence of oxygen of claim 1, wherein: the inner wall of the distillation furnace is made of refractory materials made of aluminum oxide and zirconia.
8. The apparatus for the high temperature treatment of carbon black in the absence of oxygen of claim 1, wherein: the material screw, the distillation furnace and the cooling reaction device are all connected with a DCS automatic control system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921346252.4U CN210419828U (en) | 2019-08-16 | 2019-08-16 | Device for carrying out high-temperature treatment on carbon black in oxygen-free state |
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| CN201921346252.4U CN210419828U (en) | 2019-08-16 | 2019-08-16 | Device for carrying out high-temperature treatment on carbon black in oxygen-free state |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112391068A (en) * | 2019-08-16 | 2021-02-23 | 烁元新材料(东营)股份有限公司 | Device for carrying out high-temperature treatment on carbon black in oxygen-free state |
| CN114646192A (en) * | 2022-03-22 | 2022-06-21 | 丰城黑豹炭黑有限公司 | Novel furnace carbon black production device and use method |
| CN116390998A (en) * | 2020-12-04 | 2023-07-04 | 电化株式会社 | Carbon black, slurry and lithium ion secondary battery |
-
2019
- 2019-08-16 CN CN201921346252.4U patent/CN210419828U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112391068A (en) * | 2019-08-16 | 2021-02-23 | 烁元新材料(东营)股份有限公司 | Device for carrying out high-temperature treatment on carbon black in oxygen-free state |
| CN112391068B (en) * | 2019-08-16 | 2024-01-30 | 烁元新材料(东营)股份有限公司 | Device for carrying out high-temperature treatment on carbon black in anaerobic state |
| CN116390998A (en) * | 2020-12-04 | 2023-07-04 | 电化株式会社 | Carbon black, slurry and lithium ion secondary battery |
| CN114646192A (en) * | 2022-03-22 | 2022-06-21 | 丰城黑豹炭黑有限公司 | Novel furnace carbon black production device and use method |
| CN114646192B (en) * | 2022-03-22 | 2022-09-02 | 丰城黑豹炭黑有限公司 | Furnace carbon black production device and use method |
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Address after: 257300 south side of No. 8 Road, Guangrao County Economic Development Zone, Dongying, Shandong Patentee after: Shuoyuan new materials (Dongying) Co., Ltd Address before: 257300 south side of No. 8 Road, Guangrao County Economic Development Zone, Dongying, Shandong Patentee before: DONGGUAN BEISITE CHEMICAL TECHNOLOGY Co.,Ltd. |
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