CN112251048A - Cooling method for pyrolysis carbon black - Google Patents
Cooling method for pyrolysis carbon black Download PDFInfo
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- CN112251048A CN112251048A CN202010919294.3A CN202010919294A CN112251048A CN 112251048 A CN112251048 A CN 112251048A CN 202010919294 A CN202010919294 A CN 202010919294A CN 112251048 A CN112251048 A CN 112251048A
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- carbon black
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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
- C09C1/56—Treatment of carbon black ; Purification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
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- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention provides a cooling method of cracking carbon black, which is a cooling method of cracking carbon black.A temperature of carbon black generated by cracking a rubber substance from a cracking furnace and falling into a carbon black discharging screw machine is 400-450 ℃, the carbon black is cooled and sent out by the carbon black discharging screw machine, an upward overflow outlet is arranged on the carbon black discharging screw machine, finally the carbon black overflows from the overflow outlet and falls into a conveying main pipe, so that the carbon black is cooled and cooled in an anaerobic state, the temperature of the carbon black when conveyed to the overflow outlet is 120-140 ℃, and the carbon black is further sprayed and cooled in the process of falling from the overflow outlet to the conveying main pipe, so that the temperature of the carbon black when entering the conveying main pipe is 40-60 ℃. According to the invention, the overflow cooling treatment is carried out on carbon black conveying, so that air is prevented from entering the carbon black discharging screw machine to cause secondary combustion of the carbon black, the carbon black is cooled and dedusted by water mist in the process of overflowing and falling, the carbon black can be uniformly humidified and rapidly cooled, the raised dust is reduced, and the hidden troubles of spontaneous combustion, powder explosion and the like in the output process are solved at one stroke.
Description
Technical Field
The invention relates to the technical field of pyrolysis carbon black treatment, in particular to a cooling method of pyrolysis carbon black.
Background
The rubber enters a cracking furnace, is heated in the propelling process and starts cracking to generate cracking gas and carbon black, the cracking gas is cooled into liquid and non-condensable gas through an oil absorption tower and a tubular heat exchanger, and the carbon black is conveyed to another shaftless spiral conveyor through a discharge spiral conveyor with a shaft and is conveyed to be packaged. Usually, the carbon black of a plurality of cracking production lines is gathered into the same conveying main pipe to be sent to be packaged, the temperature of the carbon black falling from the cracking furnace to the carbon black discharging screw machine is about 420 ℃, the temperature of the carbon black falling from the carbon black discharging screw machine to the conveying main pipe through the spraying channel is reduced and humidified, the temperature of the carbon black entering the conveying main pipe is about 100-, in the process of conveying the main conveying pipe, carbon black produced by several cracking furnaces is all converged into the main conveying pipe, the main conveying pipe is provided with several interfaces, in order to prevent the carbon black from floating out in the process of conveying, the system is provided with an induced draft fan, external air enters the system, meanwhile, the carbon black particles are finely dried to cause dust raising, so that the hidden danger of dust explosion exists, air easily enters a carbon black discharging screw machine to enable the carbon black to be secondarily combusted, and the purpose of cooling cannot be achieved; second, natural phenomena may occur during packaging and storage.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a cooling method for cracking carbon black, which carries out cooling treatment in a carbon black overflow mode, avoids the contact of air and high-temperature carbon black, enables the carbon black to be cooled in an anaerobic state, ensures the carbon black to be uniformly humidified, reduces dust emission, and solves the hidden troubles of spontaneous combustion and powder explosion.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a cooling method of cracked carbon black, which mainly comprises the following steps:
(1) the rubber substance enters a solid-gas separation chamber from carbon black and oil gas generated by cracking in a cracking furnace for separation;
(2) separating oil gas and carbon black in a solid-gas separation chamber, wherein the temperature of the carbon black falling into a carbon black discharging screw machine is 400-450 ℃, and cooling and sending out the carbon black by the carbon black discharging screw machine;
(3) an upward overflow outlet is arranged on the carbon black discharging screw machine, and finally the carbon black overflows from the overflow outlet and falls into a conveying main pipe, so that the carbon black is cooled in an anaerobic state, and the temperature of the carbon black conveyed to the overflow outlet is 120 plus 140 ℃;
(4) and further spraying and cooling the carbon black in the process that the overflow outlet falls into the conveying main pipe, so that the temperature of the carbon black entering the conveying main pipe is 40-60 ℃.
The height of the overflow outlet of the invention is 200 mm.
The overflow outlet of the invention is positioned in an overflow channel with a sealed upper part, the lower part of the overflow channel is butted with a conveying main pipe, and the overflow channel is provided with a plurality of spray headers.
The conveying main pipe adopts a shaftless screw conveyor.
The outer surface of the carbon black discharging screw is provided with a cold water jacket.
The invention has the advantages that: carbon black that many pyrolysis furnaces carried is unified assembles the delivery header in the output, at carbon black ejection of compact screw machine and delivery header butt joint department, carry out overflow cooling to carbon black and handle, make carbon black cooling under anaerobic or the weak oxygen state, carbon black is overflowing and is fallen the in-process and is cooled down and remove dust by water smoke, can make the even humidification of carbon black and cool off rapidly, reduce the raise dust, avoid the raise dust to produce powder and explode and the spontaneous combustion, and can avoid the air reverse carbon black ejection of compact screw machine and high temperature carbon black to take place the contact, avoid carbon black postcombustion to make the cooling inefficacy, make carbon black ejection of compact screw machine carry out high-efficient cooling to carbon black under the state that is close to the vacuum, and hidden danger such as spontaneous combustion and powder explosion in the output process has.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings.
The invention relates to a cooling method of cracked carbon black, which mainly comprises the following steps:
(1) the rubber substance enters a solid-gas separation chamber from carbon black and oil gas generated by cracking in a cracking furnace for separation;
(2) separating oil gas and carbon black in a solid-gas separation chamber, wherein the temperature of the carbon black falling into the carbon black discharging screw machine is 400-450 ℃, and a cold water jacket is arranged on the outer surface of the carbon black discharging screw machine and is cooled and sent out by the carbon black discharging screw machine;
(3) an upward overflow outlet is arranged on the carbon black discharging screw machine, the height of the overflow outlet is 200mm, so that the carbon black is cooled in an anaerobic state, the temperature of the carbon black conveyed to the overflow outlet is 140-;
(4) and (3) further spraying and cooling in the process that the overflow outlet falls to the conveying main pipe, wherein the overflow outlet is positioned in an overflow channel with a sealed upper part, the conveying main pipe is butted below the overflow channel, and a plurality of spray headers are arranged in the overflow channel, so that the temperature of the carbon black entering the conveying main pipe is 40-60 ℃.
As shown in fig. 1, the cracking furnace 1 and the solid-gas separation chamber 2 are provided, in the prior art, the solid-gas separation chamber 2 is connected with an oil-gas pipeline 21, a carbon black discharging screw machine 3 is connected below the solid-gas separation chamber 2, a screw propulsion mechanism is provided in the cracking furnace 1 to bring carbon black and oil gas into the solid-gas separation chamber 2, the oil gas rises in the solid-gas separation chamber 2 to enter the oil-gas pipeline 21, and the carbon black freely falls into the carbon black discharging screw machine 3 and is taken out by the carbon black discharging screw machine 3. Under the general condition, the carbon black of a plurality of pyrolysis furnaces 1 exports and cools down through carbon black ejection of compact screw machine 3, then export in same one conveying house steward 6 of converging, conveying house steward 6 disposes the draught fan, because adopt the draught fan to have the outside air to get into, make the carbon black granule micro-drying in the pipeline 6 easily lead to the raise dust, have dust explosion's hidden danger, and the outside air gets into carbon black ejection of compact screw machine 3 easily, contact high temperature carbon black causes the postcombustion of carbon black easily.
The discharge end of carbon black ejection of compact screw machine 3 has ascending overflow mouth 4, overflow mouth 4 is located the sealed overflow passageway 5 in top, overflow passageway 5 below and connect conveying house steward 6, carbon black is by the propelling movement of carbon black ejection of compact screw machine 3 to the tip, overflow mouth 4 upwards, then freely fall gets into conveying house steward 6 in overflowing passageway 5, overflow mouth 4's height is about 200mm, can effectively prolong carbon black at the path distance and the time of carbon black ejection of compact screw machine 3, make the carbon black fully cool down, and simultaneously, because carbon black adopts the overflow mode blanking, can avoid the air to get into in carbon black ejection of compact screw machine 3, consequently, carbon black is in cooling under the state of being close to vacuum (anaerobic or weak oxygen) in carbon black ejection of compact screw machine 3, the cooling effect is better, and avoid the secondary combustion.
The outer surface of the carbon black discharging screw machine 3 is provided with a water cooling jacket 30, one end of the water cooling jacket 30 is provided with a water replenishing pipe 31, the other end is provided with a water outlet pipe 32, the water cooling jacket 30 can play a role of cooling the carbon black pushed in the carbon black discharging screw machine 3, preferably, the water replenishing pipe 31 enters the water cooling jacket 30 from a section close to the solid-gas separation chamber 2 and is discharged from the lower part of the water cooling jacket 30 from one end of an outlet of the carbon black discharging screw machine 3. The temperature of the carbon black falling from the combustion mechanism 1 to the carbon black discharging screw machine 3 is about 420 ℃, and the temperature of the carbon black falling when reaching the upper part of the overflow port 4 is about 120 ℃.
Therefore, the spraying heads 51 are arranged in the overflow channel 5, the spraying heads 51 can be arranged above the overflow outlet 4, and a plurality of spraying heads 51 are arranged in the overflow channel 5 aiming at the falling position of the carbon black, the carbon black overflowing from the overflow outlet 4 and falling is cooled and dedusted by water mist, so that the temperature of the carbon black is reduced to about 60 ℃ after entering the conveying pipeline 6, part of spraying water is gasified by the temperature of the carbon black and then moves along with the conveying main pipe 6, the spraying water is cooled and then mixed with the carbon black in the moving process, the carbon black can be uniformly humidified, the temperature is rapidly reduced to about 40 ℃, and the hidden troubles of spontaneous combustion and powder explosion are solved at one step.
It is to be understood that the technical scope of the present invention is not limited to the contents of the specification, and that modifications or changes may be made by those skilled in the art based on the above description, and all such modifications and changes are intended to fall within the scope of the appended claims.
Claims (5)
1. A method of cooling cracked carbon black, characterized by: the method mainly comprises the following steps:
(1) the rubber substance enters a solid-gas separation chamber from carbon black and oil gas generated by cracking in a cracking furnace for separation;
(2) separating oil gas and carbon black in a solid-gas separation chamber, wherein the temperature of the carbon black falling into a carbon black discharging screw machine is 400-450 ℃, and cooling and sending out the carbon black by the carbon black discharging screw machine;
(3) an upward overflow outlet is arranged on the carbon black discharging screw machine, and finally the carbon black overflows from the overflow outlet and falls into a conveying main pipe, so that the carbon black is cooled in an anaerobic state, and the temperature of the carbon black conveyed to the overflow outlet is 120 plus 140 ℃;
(4) and further spraying and cooling the carbon black in the process that the overflow outlet falls into the conveying main pipe, so that the temperature of the carbon black entering the conveying main pipe is 40-60 ℃.
2. A method of cooling cracked carbon black as claimed in claim 1, wherein: the height of the overflow outlet is 200 mm.
3. A method for cooling pyrolysis carbon black according to claim 1 or 2, characterized in that: the overflow outlet is positioned in an overflow channel with a sealed upper part, the lower part of the overflow channel is butted with a conveying main pipe, and a plurality of spray headers are arranged in the overflow channel.
4. A method of cooling cracked carbon black as claimed in claim 3, wherein: the conveying main pipe adopts a shaftless screw conveyor.
5. A method for cooling pyrolysis carbon black according to claim 1 or 2, characterized in that: and a cold water jacket is arranged on the outer surface of the carbon black discharging screw.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010919294.3A CN112251048A (en) | 2020-09-04 | 2020-09-04 | Cooling method for pyrolysis carbon black |
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| CN202010919294.3A CN112251048A (en) | 2020-09-04 | 2020-09-04 | Cooling method for pyrolysis carbon black |
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| CN112251048A true CN112251048A (en) | 2021-01-22 |
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| CN202010919294.3A Pending CN112251048A (en) | 2020-09-04 | 2020-09-04 | Cooling method for pyrolysis carbon black |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203247A (en) * | 2021-05-07 | 2021-08-03 | 郑州睿科生化科技有限公司 | Multiple circulating cooling device for chemical production |
Citations (9)
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|---|---|---|---|---|
| US4284616A (en) * | 1978-02-15 | 1981-08-18 | Intenco, Inc. | Process for recovering carbon black and hydrocarbons from used tires |
| CN203183807U (en) * | 2013-03-01 | 2013-09-11 | 宁波永祥铸造有限公司 | Water mist cooling dust collection device |
| CN204298316U (en) * | 2014-11-14 | 2015-04-29 | 山东城矿环保集团有限公司 | carbon black spiral cooling device |
| CN204417393U (en) * | 2014-12-31 | 2015-06-24 | 青岛东方循环能源有限公司 | A kind of device making cracking black carbon fast cooling |
| CN106268530A (en) * | 2015-06-03 | 2017-01-04 | 苏州天允金属材料有限公司 | It is applied to the sealed material guide device in refuse thermal splitting system |
| CN106700661A (en) * | 2015-08-07 | 2017-05-24 | 泰州华瑞电子专用设备有限公司 | Carbon black spiral cooling machine |
| CN207287016U (en) * | 2017-08-22 | 2018-05-01 | 天津万向新元科技有限公司 | Production of carbon black workshop cleaner |
| CN207439200U (en) * | 2017-11-04 | 2018-06-01 | 新疆鑫凯高色素特种炭黑有限公司 | Material cooler in production of carbon black |
| CN208678691U (en) * | 2018-07-10 | 2019-04-02 | 丰城黑豹炭黑有限公司 | A kind of production of carbon black cleaner |
-
2020
- 2020-09-04 CN CN202010919294.3A patent/CN112251048A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4284616A (en) * | 1978-02-15 | 1981-08-18 | Intenco, Inc. | Process for recovering carbon black and hydrocarbons from used tires |
| CN203183807U (en) * | 2013-03-01 | 2013-09-11 | 宁波永祥铸造有限公司 | Water mist cooling dust collection device |
| CN204298316U (en) * | 2014-11-14 | 2015-04-29 | 山东城矿环保集团有限公司 | carbon black spiral cooling device |
| CN204417393U (en) * | 2014-12-31 | 2015-06-24 | 青岛东方循环能源有限公司 | A kind of device making cracking black carbon fast cooling |
| CN106268530A (en) * | 2015-06-03 | 2017-01-04 | 苏州天允金属材料有限公司 | It is applied to the sealed material guide device in refuse thermal splitting system |
| CN106700661A (en) * | 2015-08-07 | 2017-05-24 | 泰州华瑞电子专用设备有限公司 | Carbon black spiral cooling machine |
| CN207287016U (en) * | 2017-08-22 | 2018-05-01 | 天津万向新元科技有限公司 | Production of carbon black workshop cleaner |
| CN207439200U (en) * | 2017-11-04 | 2018-06-01 | 新疆鑫凯高色素特种炭黑有限公司 | Material cooler in production of carbon black |
| CN208678691U (en) * | 2018-07-10 | 2019-04-02 | 丰城黑豹炭黑有限公司 | A kind of production of carbon black cleaner |
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| 周学厚 等: "《炭黑》", 28 February 1958, 石油工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203247A (en) * | 2021-05-07 | 2021-08-03 | 郑州睿科生化科技有限公司 | Multiple circulating cooling device for chemical production |
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Effective date of registration: 20210818 Address after: 510000 Room 101, No. 239, Kexue Avenue, Huangpu District, Guangzhou City, Guangdong Province (office only) Applicant after: Guangzhou Xinde Environmental Protection Technology Co.,Ltd. Address before: 363000 beside National Highway 324, Chendai Town, Yunxiao County, Zhangzhou City, Fujian Province Applicant before: FUJIAN AOLINMEI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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Application publication date: 20210122 |
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