CN111440463A - Method for reducing anthracene oil consumption in carbon black production - Google Patents
Method for reducing anthracene oil consumption in carbon black production Download PDFInfo
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- CN111440463A CN111440463A CN202010444454.3A CN202010444454A CN111440463A CN 111440463 A CN111440463 A CN 111440463A CN 202010444454 A CN202010444454 A CN 202010444454A CN 111440463 A CN111440463 A CN 111440463A
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- combustion chamber
- gun
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- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000006229 carbon black Substances 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000002485 combustion reaction Methods 0.000 claims abstract description 82
- 239000003034 coal gas Substances 0.000 claims abstract description 35
- 239000003921 oil Substances 0.000 claims abstract description 22
- 238000005336 cracking Methods 0.000 claims abstract description 12
- 239000010779 crude oil Substances 0.000 claims abstract description 12
- 239000000446 fuel Substances 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 6
- 239000011449 brick Substances 0.000 claims description 3
- JUVGUSVNTPYZJL-UHFFFAOYSA-N chromium zirconium Chemical compound [Cr].[Zr] JUVGUSVNTPYZJL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 239000010431 corundum Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 78
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000011280 coal tar Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 241000872198 Serjania polyphylla Species 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 238000010092 rubber production Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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Classifications
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- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention relates to a method for reducing the using amount of anthracene oil in carbon black production, which adopts a gas furnace entering structure comprising an air distributor, an axial gas gun, a combustion chamber and a gas nozzle, wherein the air distributor is arranged on the front end necking side of the combustion chamber, the air distributor is axially and directly communicated with the front end necking of the combustion chamber, the axial gas gun is arranged at the axial center of the air distributor, a plurality of rows of gas nozzles are circumferentially arranged at the front end of the axial gas gun, the axial gas gun extends to the front end necking of the combustion chamber, gas which is circumferentially sprayed out and axial hot air are mixed at the front end necking of the combustion chamber, and the gas and the axial hot air are rectified to axially enter the combustion chamber for fully mixed combustion. The invention changes the feeding mode of coal gas, makes the combustion high-temperature area move back to the front end of the throat, makes the crude oil cracking more sufficient, improves the quality of carbon black, and reduces the using amount of anthracene oil.
Description
Technical Field
The invention belongs to the technical field of carbon black production, and particularly relates to a method for reducing the using amount of anthracene oil in carbon black production.
Background
The carbon black can be used as a reinforcing filler in rubber production, and has important influence on the physical and mechanical properties and the processing technology of the rubber. Typical processes for furnace carbon black production are: the adopted fuel (coal gas) feeding mode is radial, the coal gas is sprayed into the furnace through 8 inlet holes on a coal gas nozzle and is combined with air coming from the axial direction to be combusted in a reaction furnace, the raw material is sprayed into flame of combustion after being atomized, and the raw material is subjected to pyrolysis and then polymerized to generate carbon black; carbon black is suspended in the combustion residual gas to form carbon black flue gas, the carbon black flue gas enters a separation working section after being cooled, and the carbon black is collected and dried. The raw material for producing the carbon black for rubber generally uses mixed oil of coal tar and anthracene oil, along with the market competition is more and more intense, the requirement of customers on carbon black products is higher and higher, in order to meet the requirement of customers on the internal quality of carbon black in the production process, particularly the requirement on the control of coloring strength and nitrogen adsorption indexes, the anthracene oil proportion reaches 90% when the high-structure carbon black N234 is produced, and the anthracene oil proportion reaches 70% when the high-structure carbon black N375 is produced. The anthracene oil is a part of the coal tar composition and can be obtained by distillation, the price of the anthracene oil is higher than that of the coal tar, and the high proportion of the anthracene oil in the carbon black raw material undoubtedly increases the production cost.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a method for reducing the using amount of anthracene oil in carbon black production, which changes the feeding mode of coal gas and enables a combustion high-temperature area to move back to the front end of a throat, thereby providing enough heat for crude oil cracking, enabling the crude oil cracking to be more sufficient, improving the quality of carbon black and reducing the using amount of anthracene oil when producing the carbon black with the same quality.
The technical scheme of the invention is realized as follows: a method for reducing the consumption of anthracene oil in carbon black production, the adopted coal gas charging structure comprises an air distributor, an axial coal gas gun, a combustion chamber and a coal gas nozzle, the air distributor is arranged at the front end necking end of the combustion chamber, the air distributor is axially and directly communicated with the front end necking of the combustion chamber, an axial gas gun is arranged at the axial center of the air distributor, a plurality of rows of gas nozzles are radially designed on the periphery of the front end of the axial gas gun, and the axial gas gun is extended to the front end necking part of the combustion chamber, the gas fan is connected with the pipeline to lead the gas to enter the axial gas gun through the axial gas inlet, then the coal gas is sprayed out through the coal gas nozzle, the hot air enters the air distributor from the air inlet and flows axially after rectification, the coal gas sprayed out radially and the axial hot air are mixed at the front end necking section of the combustion chamber and flow axially to enter the combustion chamber for full mixing and combustion.
Preferably, a fuel gun protective sleeve is designed at the center of the axial gas gun, the fuel gun can be inserted into the fuel gun protective sleeve when the gas supply is insufficient, and the gas is cut off and the fuel is used as the fuel to continue the production.
It is further preferable that 6 rows of gas nozzles with 8 small holes are designed at the front end of the axial gas gun.
Preferably, the air distributor comprises a shell, an air inlet is formed in the wall of the shell, an air cavity is formed in the shell, an axial air guide pipe is arranged in the air cavity, the axial air guide pipe is communicated with a front-end necking of the combustion chamber, the air cavity is not directly communicated with the front-end necking of the combustion chamber, and the left end of the air cavity is communicated with the axial air guide pipe after passing through an air backflow port; air enters the air cavity from the air inlet, then flows to the front end of the axial air guide pipe through the air backflow port, and is rectified into air which axially enters the combustion chamber through the axial air guide pipe and then is mixed with coal gas sprayed out of the coal gas nozzle.
Preferably, a gas detection sensor is arranged at a front end necking of the combustion chamber, a gas detection sensor is arranged at a smoke outlet of the combustion chamber, the combustion condition is judged by detecting gas components at the front end necking of the combustion chamber and gas components at the smoke outlet after combustion, the depth of the axial coal gas gun extending into the combustion chamber, the flow rate of coal gas and the flow rate of air are adjusted according to the detection result, if the combustion is insufficient, the axial coal gas gun is retracted and the air flow is increased, so that the mixing distance between the air and the coal gas at the front end necking is longer, the air and the coal gas are mixed more sufficiently, the fire hole moves forward, and the combustion is more sufficient; on the contrary, the axial gas gun moves forward to the combustion chamber, so that the gas flow can be increased, more combustion heat is generated, more crude oil cracking reactions can be realized, the carbon black quality is ensured, the productivity is improved, and the production cost is reduced.
Preferably, the inner layer of the combustion chamber is a zirconium-chromium corundum brick, and the outer layer of the combustion chamber is a heat-insulating layer.
Due to the adoption of the technical scheme, compared with the prior art, the method has the following beneficial effects: 1. the method changes the gas feeding mode from radial injection to axial injection, designs 6 rows of gas nozzles with 8 small holes in each row at the front end of an axial gas gun, extends the axial gas gun to the front end reducing port of a combustion chamber, and when producing carbon black, the gas is radially injected and then is more fully mixed and combusted with hot air coming from the axial direction, so that a combustion high-temperature area moves back to the front end of a throat, thereby providing sufficient high temperature for crude oil cracking, leading the crude oil cracking to be more full, improving the quality of the carbon black, reducing the using amount or the proportion of anthracene oil when producing the carbon black with the same quality, reducing 20 percent of the produced N234 carbon black, 40 percent of the produced N375 carbon black, and greatly saving the production cost; 2. according to the invention, the fuel gun sleeve with the thickness of 57mm is designed in the gas spray gun, so that the gas is conveniently switched to fuel for continuous production when the gas supply is insufficient, the continuous and stable production is kept, the running rate of the device is improved, the production cost is saved and the labor intensity of workers is reduced; 3. the gas charging structure is simple to manufacture, convenient to maintain and capable of saving production and operation cost.
Drawings
FIG. 1 is a schematic view of the structure of the gas charging furnace of the present invention.
FIG. 2 is a cross-sectional view of the air distributor and combustion chamber.
In the figure: 1. an air inlet; 2. an air distributor; 3. an axial gas gun; 4. a gas nozzle; 5. a combustion chamber; 6. an axial gas inlet; 7. a fuel gun sleeve; 21. an axial gas-guide tube; 22. an air backflow port.
Detailed Description
The technical solution in 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.
A method for reducing the using amount of anthracene oil in carbon black production, the adopted gas furnace entering structure is shown in figure 1, and comprises an air distributor 2, an axial gas gun 3, a combustion chamber 5, gas nozzles 4 and a fuel gun sleeve 7, wherein the front end necking end of the combustion chamber 5 is provided with the air distributor 2, the air distributor 2 is axially communicated with the front end necking of the combustion chamber 5, the axial gas gun 3 is arranged at the axial center position of the air distributor 2, 6 rows of gas nozzles 4 with 8 small holes are radially designed on the periphery of the front end of the axial gas gun 3, the axial gas gun 3 extends to the front end necking end of the combustion chamber 5, a gas fan is connected with a pipeline, gas enters the axial gas gun 3 through the axial gas inlet 6 and then is ejected through the gas nozzles 4, hot air enters the air distributor 2 from the air inlet 1 and flows axially after rectification, the radially ejected gas and the axial hot air are mixed at the front end necking section of the combustion chamber 5, and rectified to axially enter the combustion chamber 5 for sufficient mixed combustion. The fuel gun protective sleeve 7 is designed at the center of the axial gas gun 4, so that the gas and the fuel can be switched conveniently, the continuous and stable production is kept, and the operation rate of the device is improved. When the gas supply is insufficient, the fuel gun can be inserted into the fuel gun sheath pipe 7, and the gas is cut off and the fuel is used as the fuel to continue the production.
Referring to fig. 2, the air distributor 2 of the present invention comprises a housing, an air inlet 1 is arranged on the housing wall, an air chamber is arranged in the housing, an axial air duct 21 is arranged in the air chamber, the axial air duct 21 is communicated with a front end throat of the combustion chamber 5, the air chamber is not directly communicated with the front end throat of the combustion chamber 5, and the left end of the air chamber is communicated with the axial air duct 21 after passing through an air backflow port 22. Air enters the air cavity from the air inlet 1, then flows to the front end of the axial air duct 21 through the air backflow port 22, and is rectified into air which enters the combustion chamber in the axial direction through the axial air duct and then is mixed with coal gas sprayed from the coal gas nozzle 4. The inner layer of the combustion chamber 5 is a zirconium-chromium corundum brick, and the outer layer is a heat-insulating layer.
In the invention, the mode of feeding fuel gas into the furnace is changed from radial injection to axial injection, the axial gas gun 3 is arranged at the axial central position of the air distributor 2, 6 rows of gas nozzles with 8 small holes are designed at the front end of the axial gas gun 3, and the gas spray gun is extended into the front end reducing port of the combustion chamber, when carbon black is produced, the gas is sprayed in the radial direction and is more fully mixed and combusted with hot air coming from the axial direction, so that a combustion high-temperature area moves back to the front end of the reducing port, thereby providing enough high-temperature heat for crude oil cracking, leading the crude oil cracking to be more fully and improving the quality of the carbon black. Meanwhile, a 57MM sleeve is designed in the gas spray gun, so that the gas spray gun is convenient to switch to fuel oil for continuous production when the gas supply is insufficient, and the operation rate of the device is improved.
The specific operation steps are as follows:
the invention changes the mode of feeding gas, adopts axial injection, and connects the gas blower with the pipeline to feed the gas into the axial gas gun 3 through the axial gas inlet 6 during production, then the gas is sprayed out through the gas nozzle 4 to be mixed with the hot air which enters the air distributor 2 from the air inlet 1 and flows axially after rectification in the front end necking section, and the mixture is fully mixed and combusted in the combustion chamber 5, and the hot air flow high-temperature area is closer to the front end of the throat after combustion, thus providing enough high temperature for crude oil cracking, leading the crude oil cracking to be more sufficient, and improving the quality of carbon black; the gas detection sensor is arranged at the front end necking of the combustion chamber, the gas detection sensor is arranged at the smoke outlet of the combustion chamber, the combustion condition is judged by detecting the gas components of the gas inlet at the front end necking of the combustion chamber and the gas components of the smoke outlet after combustion, and the depth of the axial gas gun extending into the combustion chamber, the flow of gas and the flow of air are adjusted according to the detection result to achieve full combustion. If the combustion is insufficient, the axial gas gun is retracted and the air flow is increased, so that the mixing distance of air and gas at the front end necking is longer, the mixing is more sufficient, the fire hole moves forward, and the combustion is more sufficient; on the contrary, the axial gas gun moves forward to the combustion chamber, so that the gas flow can be increased, more combustion heat is generated, more crude oil cracking reactions can be realized, the carbon black quality is ensured, the productivity is improved, and the production cost is reduced.
When the gas supply is insufficient, the fuel gun can be inserted into the fuel gun protective sleeve 7, the gas is cut off, the fuel is used as the fuel to continue the production, the continuous and stable production is kept, the running rate of the device is improved, and therefore the production cost is saved and the labor intensity of workers is reduced. Thus, the object of the present invention is accomplished.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A method for reducing the dosage of anthracene oil in carbon black production is characterized in that: the adopted coal gas furnace entering structure comprises an air distributor, an axial coal gas gun, a combustion chamber and a coal gas nozzle, wherein the air distributor is arranged at the front end necking end of the combustion chamber, the air distributor is axially and directly communicated with the front end necking of the combustion chamber, the axial coal gas gun is arranged at the axial center of the air distributor, a plurality of rows of coal gas nozzles are radially designed on the periphery of the front end of the axial coal gas gun, the axial coal gas gun extends to the front end necking of the combustion chamber, a coal gas fan is connected with a pipeline to enable coal gas to enter the axial coal gas gun through an axial coal gas inlet and then to be sprayed out through the coal gas nozzle, hot air enters the air distributor from the air inlet and is rectified to be axial, the coal gas sprayed out in the radial direction and the hot air in the axial direction are mixed at the front end necking of the combustion chamber, and are rectified to axially enter.
2. The method of claim 1, wherein the amount of anthracene oil used is reduced in the production of carbon black by: the fuel gun protective sleeve is designed at the center of the axial gas gun, and the fuel gun can be inserted into the fuel gun protective sleeve when the gas supply is insufficient, so that the gas is cut off and the fuel is used as the fuel to continue the production.
3. The method of claim 1, wherein the amount of anthracene oil used is reduced in the production of carbon black by: 6 rows of gas nozzles with 8 small holes in each row are designed at the front end of the axial gas gun.
4. The method of claim 1, wherein the amount of anthracene oil used is reduced in the production of carbon black by: the air distributor comprises a shell, an air inlet is arranged on the wall of the shell, an air cavity is arranged in the shell, an axial air guide pipe is arranged in the air cavity, the axial air guide pipe is communicated with a front end necking of the combustion chamber, the air cavity is not directly communicated with the front end necking of the combustion chamber, and the left end of the air cavity is communicated with the axial air guide pipe after passing through an air backflow port; air enters the air cavity from the air inlet, then flows to the front end of the axial air guide pipe through the air backflow port, and is rectified into air which axially enters the combustion chamber through the axial air guide pipe and then is mixed with coal gas sprayed out of the coal gas nozzle.
5. The method of claim 1, wherein the amount of anthracene oil used is reduced in the production of carbon black by: the inner layer of the combustion chamber is made of zirconium-chromium corundum bricks, and the outer layer of the combustion chamber is an insulating layer.
6. The method of claim 1, wherein the amount of anthracene oil used is reduced in the production of carbon black by: the method comprises the steps of installing a gas detection sensor at a front end necking of a combustion chamber, installing a gas detection sensor at a smoke vent of the combustion chamber, judging combustion conditions by detecting gas components entering the front end necking of the combustion chamber and gas components entering the smoke vent after combustion, adjusting the depth of an axial gas gun extending into the combustion chamber, the flow of gas and the flow of air according to detection results, retracting the axial gas gun and increasing air flow if the combustion is insufficient, so that the mixing distance of the air and the gas at the front end necking is longer, the mixing is more sufficient, a fire hole is moved forward, the combustion is more sufficient, otherwise, the axial gas gun moves forward towards the combustion chamber, the gas flow can be increased, more heat is generated to enable the cracking of crude oil to be more sufficient, the quality and the capacity of carbon black are improved, and the production cost is saved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010444454.3A CN111440463A (en) | 2020-05-23 | 2020-05-23 | Method for reducing anthracene oil consumption in carbon black production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010444454.3A CN111440463A (en) | 2020-05-23 | 2020-05-23 | Method for reducing anthracene oil consumption in carbon black production |
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| Publication Number | Publication Date |
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| CN111440463A true CN111440463A (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010444454.3A Pending CN111440463A (en) | 2020-05-23 | 2020-05-23 | Method for reducing anthracene oil consumption in carbon black production |
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| CN (1) | CN111440463A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117606241A (en) * | 2024-01-18 | 2024-02-27 | 山西安仑化工有限公司 | Carbon black reaction furnace capable of switching oil gun on line |
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2020
- 2020-05-23 CN CN202010444454.3A patent/CN111440463A/en active Pending
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| GB773777A (en) * | 1952-04-08 | 1957-05-01 | Cabot Godfrey L Inc | Process of making furnace carbon black and burner therefor |
| US2825632A (en) * | 1952-04-08 | 1958-03-04 | Cabot Godfrey L Inc | Process of making furnace carbon black and burner therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117606241A (en) * | 2024-01-18 | 2024-02-27 | 山西安仑化工有限公司 | Carbon black reaction furnace capable of switching oil gun on line |
| CN117606241B (en) * | 2024-01-18 | 2024-04-12 | 山西安仑化工有限公司 | Carbon black reaction furnace capable of switching oil gun on line |
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Application publication date: 20200724 |