CN108997794B - Reaction system for preparing carbon black by multi-furnace end plasma method - Google Patents
Reaction system for preparing carbon black by multi-furnace end plasma method Download PDFInfo
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- CN108997794B CN108997794B CN201810886334.1A CN201810886334A CN108997794B CN 108997794 B CN108997794 B CN 108997794B CN 201810886334 A CN201810886334 A CN 201810886334A CN 108997794 B CN108997794 B CN 108997794B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000006229 carbon black Substances 0.000 title claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 82
- 239000002994 raw material Substances 0.000 claims abstract description 31
- 238000004891 communication Methods 0.000 claims abstract description 5
- 230000007704 transition Effects 0.000 claims description 42
- 239000000498 cooling water Substances 0.000 claims description 37
- 239000011229 interlayer Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 46
- 239000011261 inert gas Substances 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 description 10
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000012159 carrier gas Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- -1 C-H compound Chemical class 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a reaction system for preparing carbon black by a multi-furnace-head plasma method, which comprises at least two furnace heads, wherein the furnace heads are connected with the same flue. The furnace end includes furnace body, plasma rifle and high temperature trip valve. The furnace body comprises a reaction section furnace body and a cooling section furnace body, and the reaction section furnace body is connected with the cooling section furnace body. The reaction section furnace body is provided with a reaction section furnace chamber, and the cooling section furnace body is provided with a cooling section furnace chamber. The high-temperature cut-off valve is arranged between the reaction section furnace body and the cooling section furnace body and is used for controlling the communication state of the reaction section furnace cavity and the cooling section furnace cavity. One end of the cooling section furnace body, which is far away from the reaction section furnace body, is connected with the flue, and the cooling section furnace chamber is communicated with the flue. The plasma gun is detachably arranged on the reaction section furnace body, and the reaction section furnace body is provided with a raw material gas inlet and a replacement gas inlet which are communicated with the reaction section furnace chamber. The reaction system ensures the continuity of production, improves the production efficiency, and greatly reduces the consumption of inert gas.
Description
Technical Field
The invention relates to the technical field of carbon black preparation, in particular to a reaction system for preparing carbon black by a multi-furnace end plasma method.
Background
Plasma process carbon black: and (3) cracking the raw material gas to obtain the carbon black by a plasma method. The method comprises the steps of ionizing inert gases such as hydrogen, helium, nitrogen and the like to generate a high-temperature plasma zone, introducing raw material gas into the plasma zone, cracking to generate carbon black and hydrogen, separating and recovering the carbon black after quenching, and simultaneously generating a large amount of explosive gases such as H2, C-H compound gases and the like.
At present, partial factories and institutions test natural gas cracking modes to produce hydrogen and carbon, and products of the modes do not contain or contain small amounts of hydrocarbon, so that the method is an environment-friendly process. The existing reaction system for preparing carbon black and hydrocarbon by using plasma is basically a single furnace end reaction system. Because the electrode can generate a large amount of heat in the operation process of the plasma gun, the temperature of the high-temperature plasma zone is up to 1800-2000 ℃. Therefore, the plasma gun is generally used for 100-1000 hours and needs to be replaced.
In order to avoid accumulation, the reaction system is in a micro negative pressure state in the operation process, the reaction system is stopped for replacing the plasma gun, and the plasma gun can be replaced after a large amount of inert gas is replaced, otherwise, air (oxygen) is sucked into the reaction system, and explosion is caused.
Therefore, the single burner reaction system cannot be continuously produced, and a large amount of inert gas is consumed by replacing the whole reaction system in the process of replacing the plasma gun. In the process of stopping the furnace, the pipeline (flue) communicated with the furnace end and the rear part is inevitably cooled down, and the next time the furnace is opened, the temperature must be raised again, so that serious heat loss is generated.
Disclosure of Invention
The invention aims to provide a reaction system for preparing carbon black by a multi-furnace-head plasma method, wherein a plurality of furnace heads work circularly, thereby ensuring the continuity of production, improving the production efficiency and greatly reducing the consumption of inert gas.
Embodiments of the present invention are implemented as follows:
a reaction system for preparing carbon black by a multi-furnace-head plasma method comprises at least two furnace heads, wherein the furnace heads are connected with the same flue. The furnace end includes furnace body, plasma rifle and high temperature trip valve.
The furnace body comprises a reaction section furnace body and a cooling section furnace body, and the reaction section furnace body is connected with the cooling section furnace body. The reaction section furnace body is provided with a reaction section furnace chamber, and the cooling section furnace body is provided with a cooling section furnace chamber. The high-temperature cut-off valve is arranged between the reaction section furnace body and the cooling section furnace body and is used for controlling the communication state of the reaction section furnace cavity and the cooling section furnace cavity. One end of the cooling section furnace body, which is far away from the reaction section furnace body, is connected with the flue, and the cooling section furnace chamber is communicated with the flue. The cooling section furnace body is provided with a cooling device for reducing the temperature of the cooling section furnace chamber.
The plasma gun is detachably arranged on the reaction section furnace body, and a high-temperature plasma region generated by the plasma gun is accommodated in the reaction section furnace chamber; the reaction section furnace body is provided with a raw material gas inlet and a replacement gas inlet which are communicated with the reaction section hearth, and raw material gas can be sprayed to a high-temperature plasma region through the raw material gas inlet.
Further, the cooling device comprises a cooling water cavity, a cooling water inlet and a cooling water outlet, the cooling water cavity is positioned in a hollow interlayer of the cooling section furnace body, the cooling water inlet and the cooling water outlet are arranged in the cooling section furnace body, and the cooling water inlet and the cooling water outlet are respectively communicated with the cooling water cavity.
Further, the reaction section hearth is cylindrical, the plasma gun is arranged at one end of the reaction section hearth, the raw material gas inlet and the replacement gas inlet are arranged on the side face of the reaction section hearth, and the raw material gas inlet is arranged near one end of the reaction section hearth where the high-temperature plasma gun is arranged; the cooling section hearth comprises a transition section and an extension section, wherein the transition section is in a truncated cone shape, and the extension section is in a cylindrical shape; the central axes of the reaction section hearth, the transition section and the extension section are collinear, and the length of the reaction section hearth is smaller than the total length of the transition section and the extension section; the small end of the transition section is communicated with one end of the reaction section hearth, the large end of the transition section is communicated with one end of the extension section, and the other end of the extension section is communicated with the flue.
Further, the reaction section hearth is prismatic, the plasma gun is arranged at one end of the reaction section hearth, the raw material gas inlet and the replacement gas inlet are arranged at the side face of the reaction section hearth, and the raw material gas inlet is arranged at one end, close to the reaction section hearth, where the high-temperature plasma gun is arranged; the cooling section hearth comprises a transition section and an extension section, wherein the transition section is in a prismatic table shape, and the extension section is in a prismatic shape; the edges of the reaction section hearth, the transition section and the extension section are the same, the central axes of the reaction section hearth, the transition section and the extension section are collinear, and the length of the reaction section hearth is smaller than the total length of the transition section and the extension section; the small end of the transition section is communicated with one end of the reaction section hearth, the large end of the transition section is communicated with one end of the extension section, and the other end of the extension section is communicated with the flue.
Further, the number of the raw material gas inlets is not less than two, and the raw material gas inlets are uniformly distributed by taking the central shaft of the reaction section hearth as the center.
Further, the cooling water inlet is positioned at one end of the cooling section furnace body far away from the reaction section furnace body, and the cooling water outlet is positioned at one end of the cooling section furnace body close to the reaction section furnace body.
Further, the number of the furnace heads is three.
The embodiment of the invention has the beneficial effects that: according to the reaction system, the furnace heads are connected to the same flue, so that the whole reaction system is conveniently replaced by inert gas, and carbon black is conveniently and uniformly collected. Through setting up reserve furnace end, avoid blowing out, reduce the heat loss, guarantee continuous production, improve production efficiency. In each furnace end, through setting up high Wen Qieduan valve, when making the plasma gun change, only need carry out inert gas to reaction section furnace and change, reduce inert gas consumption greatly, practice thrift manufacturing cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a reaction system according to embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of a reaction system according to embodiment 2 of the present invention;
FIG. 3 is a schematic structural diagram of a reaction system according to embodiment 3 of the present invention;
fig. 4 is a schematic cross-sectional view of a burner according to embodiments 1, 2 and 3 of the present invention, and a schematic connecting between the burner and a flue.
Icon: 100-furnace end, 110-furnace body, 111-reaction section furnace body, 112-reaction section furnace, 113-cooling section furnace, 114-cooling section furnace, 1141-transition section, 1142-extension section, 115-cooling device, 1151-cooling water cavity, 1152-cooling water inlet, 1153-cooling water outlet, 116-plasma gun, 1161-high temperature plasma zone, 117-high temperature cut-off valve, 118-raw material gas inlet, 119-replacement gas inlet and 200-flue.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. The terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1 and 4, the present embodiment provides a reaction system for preparing carbon black by a multi-burner plasma method, which comprises two burners 100, wherein the burners 100 are connected with a same flue 200, and the flue 200 is connected with a carbon black collecting device (not shown). In this embodiment, the burner 100 is vertical, and in other embodiments of the present invention, the burner 100 may be horizontal. The burner 100 includes a furnace body 110, a plasma gun 116, and a high temperature shut-off valve 117.
The furnace body 110 includes a reaction section furnace body 111 and a cooling section furnace body 113, and the reaction section furnace body 111 is connected with the cooling section furnace body 113. The reaction-stage furnace 111 has a reaction-stage furnace 112, and the cooling-stage furnace 113 has a cooling-stage furnace 114. The high temperature cut-off valve 117 is disposed between the reaction zone furnace 111 and the cooling zone furnace 113 to control the communication state between the reaction zone furnace 112 and the cooling zone furnace 114. One end of the cooling section furnace body 113, which is far away from the reaction section furnace body 111, is connected with the flue 200, and the cooling section furnace chamber 114 is communicated with the flue 200. The cooling stage furnace body 113 is provided with a cooling device 115 for reducing the temperature of the cooling stage furnace 114.
The plasma gun 116 is detachably arranged on the reaction section furnace body 111, the plasma gun 116 is provided with a bearing gas inlet for inputting bearing gas into the plasma gun 116, and a high-temperature plasma zone 1161 generated by the plasma gun is accommodated in the reaction section hearth 112; the reaction stage furnace 111 is provided with a raw gas inlet 118 and a replacement gas inlet 119 communicating with the reaction stage furnace 112, and raw gas can be injected into the high-temperature plasma 1161 through the raw gas inlet 118.
In this embodiment, the operation steps of the reaction system are as follows:
(1) The two furnace heads 100 in fig. 1 are a first furnace head 100 and a second furnace head 100 in turn from left to right, and before the reaction system is used for the first time, the high Wen Qieduan valves 117 of the first furnace head 100 and the second furnace head 100 are opened to communicate the reaction section hearth 112 and the cooling section hearth 114 with the flue 200, and inert gas is introduced through the replacement gas inlet 119 to replace the inert gas in the whole reaction system, so that air in the reaction system is prevented.
(2) The first furnace end 100 operates, and the second furnace end 100 is ready for use. The operation of the furnace end 100 comprises the steps that a carrier gas, such as inert gases of hydrogen, helium, nitrogen and the like, is input into a plasma gun 116 through a carrier gas inlet, and the electrode end of the plasma gun 116 acts on the carrier gas to form a high-temperature plasma zone 1161 in a reaction zone hearth 112; raw gas, such as natural gas or acetylene gas, is introduced into the reaction zone furnace 112 through a raw gas inlet 118, and the raw gas is cracked to generate carbon black and hydrogen after being contacted with high-temperature plasma, then the carbon black is rapidly cooled in the cooling zone furnace 114, and finally the carbon black is separated and collected through a flue 200.
(3) After the first furnace end 100 works for 100-1000 hours, the first furnace end 100 is closed, the second furnace end 100 is operated, and the plasma gun 116 of the first furnace end 100 is replaced. The replacement steps of plasma gun 116 are: closing the plasma gun 116, stopping inputting the carrier gas and the raw material gas, closing the high Wen Qieduan valve 117 of the furnace end 100, isolating the reaction section hearth 112 and the cooling section hearth 114 of the furnace end 100, introducing inert gas through the replacement gas inlet 119, forcibly replacing the inert gas in the reaction section hearth 112, and replacing a new plasma gun after the explosive gas in the reaction section hearth 112 is replaced. The gun is replaced and pulled out, so that the air is prevented from entering the reaction section hearth 112 to cause explosion.
(4) After the second furnace end 100 works for 100-1000 hours, the second furnace end 100 is closed, the first furnace end 100 is restarted, and the plasma gun 116 of the second furnace end 100 is replaced. The operation of the burner 100 for re-operation is: before operation, the reaction zone furnace 112 must be subjected to a forced replacement of inert gas to remove air entering the reaction zone furnace 112 during replacement of the plasma gun 116. And (3) opening the high Wen Qieduan valve 117 to communicate the reaction section hearth 112 and the cooling section hearth 114 of the furnace end 100, and repeating the operation of the furnace end 100 in the step (1). Thereafter, the process returns to the step (3), and then the step (4) is performed again, and the operation is continuously circulated.
In this embodiment, the specific structure of the cooling device 115 is as follows: the cooling device 115 comprises a cooling water cavity 1151, a cooling water inlet 1152 and a cooling water outlet 1153, the cooling water cavity 1151 is positioned in a hollow interlayer of the cooling section furnace body 113, the cooling water inlet 1152 and the cooling water outlet 1153 are arranged in the cooling section furnace body 113, and the cooling water inlet 1152 and the cooling water outlet 1153 are respectively communicated with the cooling water cavity 1151. The cooling water inlet 1152 is located at an end of the cooling stage furnace 113 remote from the reaction stage furnace 111, and the cooling water outlet 1153 is located at an end of the cooling stage furnace 113 close to the reaction stage furnace 111. The cooling device 115 acts on the hollow interlayer of the cooling section furnace body 113, and has large acting area and high safety. In other embodiments of the invention, other means suitable for cooling flammable and explosive gases may be employed, such as: a spraying device acting on the outer wall of the cooling section furnace body, or a cooling coil device arranged on the inner wall of the cooling section furnace body, etc.
In this embodiment, the reaction section hearth 112 is cylindrical, the plasma gun 116 is disposed at one end of the reaction section hearth 112, the raw material gas inlet 118 and the replacement gas inlet 119 are disposed at the side surface of the reaction section hearth 112, and the raw material gas inlet 118 is disposed near the end of the reaction section hearth 112 where the high-temperature plasma gun 116 is disposed; the cooling section furnace 114 includes a transition section 1141 and an extension section 1142, the transition section 1141 is in a truncated cone shape, and the extension section 1142 is in a cylindrical shape. The central axes of the cooling section hearth 114, the transition section 1141 and the extension section 1142 are collinear, and the length of the reaction section hearth 112 is less than the total length of the transition section 1141 and the extension section 1142. The length of the cooling section hearth 114 is greater than the length of the reaction section hearth 112, providing sufficient space for reaction cooling. The small end of the transition section 1141 is communicated with one end of the reaction section hearth 112, the large end of the transition section 1141 is communicated with one end of the extension section 1142, and the other end of the extension section 1142 is communicated with the flue 200. The transition 1141 is a period from the termination of the reaction to cooling, and is calculated from the residence time of the reaction. Meanwhile, by arranging the cone-shaped transition section 1141, the area of the cooling water cavity 1151 is enlarged, and the acting area of the cooling device is increased, so that the cooling efficiency is improved.
In addition, there are other embodiments of the reaction zone hearth 112 and the cooling zone hearth 114, such as: the reaction section hearth 112 is prismatic, the plasma gun 116 is arranged at one end of the reaction section hearth 112, the raw material gas inlet 118 and the replacement gas inlet 119 are arranged at the side surface of the reaction section hearth 112, and the raw material gas inlet 118 is arranged near one end of the reaction section hearth 112 where the high-temperature plasma gun 116 is arranged; the cooling section hearth 114 comprises a transition section 1141 and an extension section 1142, wherein the transition section 1141 is in a prismatic table shape, and the extension section 1142 is in a prismatic shape; the edges of the reaction section hearth 112, the transition section 1141 and the extension section 1142 are the same, the central axis of the reaction section hearth 112, the central axis of the transition section 1141 and the central axis of the extension section 1142 are collinear, and the length of the reaction section hearth 112 is smaller than the total length of the transition section 1141 and the extension section 1142; the small end of the transition section 1141 is communicated with one end of the reaction section hearth 112, the large end of the transition section 1141 is communicated with one end of the extension section 1142, and the other end of the extension section 1142 is communicated with the flue 200. Of course, the reaction section hearth 112 may be other prismatic, the transition section 1141 may be prismatic, and the extension section 1142 may be prismatic.
In this embodiment, the number of the raw material gas inlets 118 is two, however, other embodiments, such as 3, 4 or more, can be adopted for the number of the raw material gas inlets, and the raw material gas inlets 118 are uniformly distributed with the central axis of the reaction section hearth 112 as the center, so that multiple paths of raw material gases can be processed at the same time, the application efficiency of the plasma gun 116 is improved, and the production efficiency is improved.
Example 2
As shown in fig. 2, the difference from embodiment 1 is that the number of burners 100 is three, and the operation method is also different. Specifically, the operation steps are as follows:
(1) In the setting diagram, the three furnace heads 100 are the first furnace head 100, the second furnace head 100 and the third furnace head 100 in sequence from left to right, and before the reaction system is used for the first time, the high Wen Qieduan valves 117 of the first furnace head 100, the second furnace head 100 and the third furnace head 100 are opened, so that the reaction section furnace chamber 112 and the cooling section furnace chamber 114 of the three are communicated with the flue 200, inert gas is introduced through the replacement gas inlet 119, and the inert gas replacement is carried out on the whole reaction system, thereby preventing air in the reaction system.
(2) The first furnace end 100 operates, the second furnace end 100 stands by, and the third furnace end 100 stands by. The operation steps of the burner 100 are the same as those of the embodiment.
(3) After the first furnace end 100 works for 100-1000 hours, the first furnace end 100 is closed, the second furnace end 100 is operated, the third furnace body 110 is reserved, and the plasma gun 116 of the first furnace end 100 is replaced. The replacement procedure of plasma gun 116 is the same as in the embodiment.
(4) After the second furnace end 100 works for 100-1000 hours, the second furnace end 100 is closed, the third furnace end 100 is operated, and the plasma gun 116 of the second furnace end 100 is replaced. Because of the long time it takes to replace the plasma gun 116, the plasma gun 116 of the first burner 100 may still be in the process of replacement.
(5) After the third burner 100 works for 100-1000 hours, the plasma gun 116 of the first burner 100 is replaced, the third burner 100 is closed, the first burner 100 is restarted, and the plasma gun 116 of the third burner 100 is replaced. The plasma gun 116 of the second burner 100 may also be in the process of replacement. The operation of the burner 100 for re-operation is the same as in the embodiment. After that, the process returns to the step (3), and then the steps (4) and (5) are carried out again, and the continuous circulation work is carried out.
In this embodiment, by providing three burners 100, the influence caused by the long time required for replacing the plasma gun 116 is reduced, and the furnace can be replaced in time, thereby ensuring continuous operation.
Example 3
As shown in fig. 3, the difference from the above embodiment is that the number of the jamb 100 is greater than three, and the operation method is also different.
The furnace heads 100 are divided into a plurality of groups, each group comprises a plurality of furnace heads 100, the furnace heads 100 in the same group operate simultaneously, and then the furnace heads 100 are replaced according to the operation steps of the embodiment 1 or the embodiment 2 in sequence, so that the plurality of groups of furnace heads 100 work circularly, the production continuity is ensured, and the production efficiency is greatly improved.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A reaction system for preparing carbon black by a multi-furnace end plasma method is characterized in that: the device comprises at least two furnace heads, wherein the furnace heads are connected with the same flue; the furnace end comprises a furnace body, a plasma gun and a high-temperature cut-off valve;
the furnace body comprises a reaction section furnace body and a cooling section furnace body, and the reaction section furnace body is connected with the cooling section furnace body; the reaction section furnace body is provided with a reaction section furnace cavity, and the cooling section furnace body is provided with a cooling section furnace cavity; the high-temperature cut-off valve is arranged between the reaction section furnace body and the cooling section furnace body and used for controlling the communication state of the reaction section furnace cavity and the cooling section furnace cavity; one end, far away from the reaction section furnace body, of the cooling section furnace body is connected with the flue, and the cooling section furnace chamber is communicated with the flue; the cooling section furnace body is provided with a cooling device for reducing the temperature of the cooling section furnace chamber;
the plasma gun is detachably arranged on the reaction section furnace body, and a high-temperature plasma region generated by the plasma gun is accommodated in the reaction section furnace chamber; the reaction section furnace body is provided with a raw material gas inlet and a replacement gas inlet which are communicated with the reaction section furnace chamber, and raw material gas can be sprayed to the high-temperature plasma region through the raw material gas inlet;
the cooling device comprises a cooling water cavity, a cooling water inlet and a cooling water outlet, wherein the cooling water cavity is positioned in a hollow interlayer of the cooling section furnace body, the cooling water inlet and the cooling water outlet are arranged in the cooling section furnace body, and the cooling water inlet and the cooling water outlet are respectively communicated with the cooling water cavity;
the cooling water inlet is positioned at one end of the cooling section furnace body far away from the reaction section furnace body, and the cooling water outlet is positioned at one end of the cooling section furnace body close to the reaction section furnace body;
when the reaction section hearth is cylindrical, the plasma gun is arranged at one end of the reaction section hearth, the raw material gas inlet and the replacement gas inlet are arranged on the side surface of the reaction section hearth, and the raw material gas inlet is arranged close to one end of the reaction section hearth, where the high-temperature plasma gun is arranged; the cooling section hearth comprises a transition section and an extension section, wherein the transition section is in a truncated cone shape, and the extension section is in a cylindrical shape; the central axes of the reaction section hearth, the transition section and the extension section are collinear, and the length of the reaction section hearth is smaller than the total length of the transition section and the extension section; the small end of the transition section is communicated with one end of the reaction section hearth, the large end of the transition section is communicated with one end of the extension section, and the other end of the extension section is communicated with the flue;
when the reaction section hearth is prismatic, the plasma gun is arranged at one end of the reaction section hearth, the raw material gas inlet and the replacement gas inlet are arranged at the side surface of the reaction section hearth, and the raw material gas inlet is arranged close to one end of the reaction section hearth, where the high-temperature plasma gun is arranged; the cooling section hearth comprises a transition section and an extension section, wherein the transition section is in a prismatic frustum shape, and the extension section is in a prismatic shape; the edges of the reaction section hearth, the transition section and the extension section are the same, the central axes of the reaction section hearth, the transition section and the extension section are collinear, and the length of the reaction section hearth is smaller than the total length of the transition section and the extension section; the small end of the transition section is communicated with one end of the reaction section hearth, the large end of the transition section is communicated with one end of the extension section, and the other end of the extension section is communicated with the flue.
2. The reaction system of claim 1, wherein: the number of the raw material gas inlets is not less than two, and the raw material gas inlets are uniformly distributed by taking the central shaft of the reaction section hearth as the center.
3. The reaction system of claim 1, wherein: the number of the furnace heads is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| GB854750A (en) * | 1956-06-29 | 1960-11-23 | Phillips Petroleum Co | Process and apparatus for production of carbon black |
| CN201713469U (en) * | 2010-04-30 | 2011-01-19 | 曲靖众一精细化工股份有限公司 | Effective cracker producing high quality carbon black |
| CN103224718A (en) * | 2013-05-06 | 2013-07-31 | 中橡集团炭黑工业研究设计院 | Equipment for producing semi-reinforcing purpose furnace black by utilization of thermal black cracked hydrogen and method thereof |
| CN206457453U (en) * | 2017-01-23 | 2017-09-01 | 新疆久泰化工有限公司 | A kind of novel reaction furnace throat pipe and hard (carbon) black reacting furnace |
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| US20010051127A1 (en) * | 2000-06-12 | 2001-12-13 | Showa Denko K.K. | Carbon fiber, method for producing the same and apparatus therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB854750A (en) * | 1956-06-29 | 1960-11-23 | Phillips Petroleum Co | Process and apparatus for production of carbon black |
| CN201713469U (en) * | 2010-04-30 | 2011-01-19 | 曲靖众一精细化工股份有限公司 | Effective cracker producing high quality carbon black |
| CN103224718A (en) * | 2013-05-06 | 2013-07-31 | 中橡集团炭黑工业研究设计院 | Equipment for producing semi-reinforcing purpose furnace black by utilization of thermal black cracked hydrogen and method thereof |
| CN206457453U (en) * | 2017-01-23 | 2017-09-01 | 新疆久泰化工有限公司 | A kind of novel reaction furnace throat pipe and hard (carbon) black reacting furnace |
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