CN111393878A - Method for producing carbon black by mixing raw oil - Google Patents
Method for producing carbon black by mixing raw oil Download PDFInfo
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- CN111393878A CN111393878A CN202010386030.6A CN202010386030A CN111393878A CN 111393878 A CN111393878 A CN 111393878A CN 202010386030 A CN202010386030 A CN 202010386030A CN 111393878 A CN111393878 A CN 111393878A
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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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Abstract
A method for producing carbon black by blending raw oil is characterized in that the volume ratio of coal tar series oil products in the blended raw oil is 20-80%, and the volume ratio of petroleum series oil products in the blended raw oil is 20-80%. A throat section is arranged between the rear part of the combustion section and the reaction section of the reaction furnace, the diameter of the throat section is reduced by about 5% -10% compared with the diameter of the reaction section, the pressure of a reaction system in the reaction furnace is increased by 5% -20%, and the charging pressure of charging raw oil is increased by 10% -30%. When using gas fuel as fuel of carbon black reaction furnace, an adjustable swirler is installed in the combustion section. The invention has the technical effects that: the technical problem that the existing carbon black production process is not suitable for producing carbon black by using petroleum series oil products is solved, the source of raw oil for producing carbon black is expanded by using the blending of coal tar series oil products and petroleum series oil products as raw oil to produce the carbon black, and the problem that the supply of the raw oil of the carbon black is not in demand is solved.
Description
Technical Field
The invention relates to a method for producing carbon black, in particular to a method for producing carbon black by blending raw oil.
Background
Carbon black is produced by using hydrocarbons (hydrocarbon) as raw oil, the carbon black industry is an resource industry, the raw oil plays a very important role and influence on the production of the carbon black, and the guarantee of the source of the raw oil of the carbon black is one of the most important factors influencing or restricting the development of the carbon black industry/carbon black enterprises.
The carbon black raw oil is a complex mixture of various organic compounds mainly containing hydrocarbons (hydrocarbons). The main components of the paint comprise alkane, cyclane, arene, sulfide, nitride, colloid, asphaltene and the like. The raw oil of carbon black is from coal tar and petroleum; coal tar series: anthracene oil (mono-anthracene oil, di-anthracene oil), antiseptic oil, and carbon black oil; oil series: high-temperature steam cracking oil (ethylene tar) and catalytic cracking tower bottom oil (heavy oil).
As early as 2011, the china association of the coking industry issued a warning that "the coking capacity was excessive, and the coking enterprises had to control their total production to avoid greater losses". The method is influenced by the great removal of capacity in the steel industry, the coke yield and sales are reduced, the excess capacity in the coking industry is contradictory and outstanding, the environmental protection requirement is tightened to stop and eliminate the laggard devices of the coking enterprises on a large scale, the yield of Chinese coal tar is increased negatively in recent years, the supply-demand relationship is changed, and the overall supply is tightened. The coal tar is two important application ways of coal tar, namely refining and processing the coal tar and directly using the coal tar as fuel oil, and occupies a large share of the application of the coal tar due to low requirements on the variety of the coal tar. Meanwhile, the carbon black industry is in a state that raw oil supply is short of demand for a long time, and is extruded by insufficient supply of raw materials and the selling price of products, so that the temporary quality index relaxation degree of a raw material supplier by a carbon black production enterprise reaches the limit. The proportion of soft pitch to tower bottom residual oil in the coal tar provided by coal tar processing enterprises is higher and higher, and the quality of the coal tar is lower and lower.
The carbon black production and sales in China keep the annual increase rate of more than 4-7% for many years, the demand of carbon black raw oil increases from 900 ten thousand tons in 2017 to 1300 plus 1400 ten thousand tons in 2025, and the year increases by about 5%, so the supply of raw oil tends to be tense, and the price also tends to rise.
The raw materials for producing the Chinese carbon black mainly depend on coal tar series oil products: coal tar, anthracene oil, antiseptic oil and carbon black oil. In recent years, the coal tar yield in China is increased negatively, the supply-demand relationship is changed, the overall supply is tightened, the oil quantity supplied for producing carbon black is reduced, and the quality is reduced. The petroleum series oil products are basically used as the carbon black raw oil abroad, the output quantity is kept stable for a long time and slightly increased, and the quality of the oil products is guaranteed. The carbon black industry in China continues to depend on a single coal tar raw material source, which is more and more difficult, and the development of the variety and the source of the raw carbon black oil is inevitable in the industry development.
Thus, the carbon black industry should turn attention to other oils that have not been used or have been used very rarely in the past. Whether other oil products with stable and easily obtained sources and relatively low price can be searched to be used as raw oil to replace (high-temperature) coal tar which is highly dependent in the carbon black industry at present, so that the carbon black industry gets rid of or is relieved of the influence and restriction of the raw oil, and the healthier development of the carbon black industry is facilitated.
As the phenomenon of unstable processes such as raw oil mixing, filtering, preheating and the like occurs once due to the ultrahigh content of the asphaltene in the oil for producing the carbon black, solid particles exist in the high content of the asphaltene, the atomization of the raw oil in a reaction furnace is influenced by the small particles, and the particles in the oil coke state can not be completely cracked but form coke-like substances (Grid) at high temperature in the reaction furnace, so that the main obstacle of producing clean carbon black is realized, and the quality of the carbon black is influenced.
According to the source of the carbon black raw oil, the Chinese carbon black production technology is a carbon black production process route developed based on (high-temperature) coal tar as a raw material, the raw oil for producing carbon black abroad mainly takes petroleum series oil products, such as catalytic cracking slurry (FCC oil for short), ethylene tar, solvent extraction oil and the like, and the foreign carbon black production technology is a carbon black production process route developed based on petroleum series oil products as a raw material. Because petroleum series oil products and high-temperature coal tar have differences in various aspects such as components, specific gravity, viscosity and the like, and the generation reaction process of carbon black has certain difference, petroleum series raw oil mainly comprising alkane and olefin is preferentially cracked into C2, C3 and other small molecules at high temperature and then polymerized into carbon black, while coal tar series raw oil with high aromatic hydrocarbon content is easier to be directly polymerized into carbon black after carbon hexacyclic dehydrogenation. The reaction processes of carbon black generation are obviously different, and the reaction speed of carbon black generation, the carbon conversion rate, the main application performance index and the like are obviously different. The carbon black production process technology of two raw oil materials is greatly different. Therefore, the current carbon black process production technology in China is directly applied to petroleum series oil products to produce carbon black, the petroleum series oil products have high hydrogen-carbon ratio, the content of polycyclic aromatic hydrocarbon is far lower than that of coal tar, the process technology conditions for producing the carbon black by using the coal tar are not beneficial to the conversion of the petroleum series oil products to the direction of generating the carbon black, and uncontrollable factors exist on the yield (oil consumption) of the carbon black production, the device capacity, the product quality and the like. The new process technology for producing carbon black suitable for petroleum series oil products or mixed oil products must be researched and developed again, and the device is improved to be suitable for producing the petroleum series oil products or the mixed oil products.
On the existing carbon black production device, the same production process control parameters are utilized, the carbon black is produced by using petroleum series oil products, the yield utilization rate of the device is reduced, the product yield is also reduced, and the structure and the reinforcing performance of the product (such as slightly lower 300 percent of the stretching strength of a carbon black/rubber mixed system) are different from those of the product produced by coal tar.
Disclosure of Invention
The invention aims to provide a method for producing carbon black by blending raw oil, which solves the problem of short supply and short demand of raw oil of carbon black.
The invention relates to a method for producing carbon black by blending raw oil, in particular to a method for producing carbon black by using the blending of coal tar series oil products and petroleum series oil products as raw oil, which expands the source of raw oil produced by carbon black, it is characterized in that the volume ratio of the coal tar series oil products in the mixed raw oil is 20-80 percent, the volume ratio of the petroleum series oil products in the mixed raw oil is 20-80 percent, a throat section is arranged between the rear part of the combustion section and the reaction section of the reaction furnace, the diameter of the throat section is reduced by about 5-10% compared with the diameter of the reaction section, the pressure of a reaction system in the reaction furnace is increased by 5% -20%, the pressure of the reaction system is not lower than 55KPa, the charging pressure of the charging raw oil is increased by 10% -30% on the basis of the existing process conditions, the raw oil atomization effect is improved, and the raw oil processing capacity is improved. When using gas fuel as fuel of carbon black reaction furnace, an adjustable swirler is installed in the combustion section.
In order to meet the reaction condition of raw oil mixing, the refractory materials are selected at each section of the reaction furnace as follows:
a combustion section: corundum brick (machine-pressed and sintered at 1700 ℃ or by using chromium corundum brick) as lining and alumina hollow sphere castable (Al) as secondary outer layer2O3Not less than 95 percent) and the outermost layer of light clay brick.
A throat section: corundum bricks (or chrome corundum bricks) as an inner lining and alumina hollow sphere castable as an outer layer.
A reaction section: corundum brick as inner lining, alumina hollow ball as secondary outer layer as pouring material and light clay brick as outermost layer.
The masonry mode adopts the mode of external masonry, internal masonry and then clamping pouring.
The high-pressure head main air supply fan improves the reaction pressure of a reaction system which is higher than that of the reaction system which takes the coal tar as the raw material;
the pressure of the reaction system in the reaction furnace is preferably increased by 10 to 15 percent.
The raw oil pressure is improved by 10 to 20 percent in an optimized way;
the coal tar series includes anthracene oil, coal tar or carbon black oil.
The petroleum series oil products comprise ethylene tar, catalytic cracking tower bottom oil or solvent extract oil.
The invention has the technical effects that: the technical problem that the existing carbon black production process is not suitable for producing carbon black by using petroleum series oil products is solved, the source of raw oil for producing carbon black is expanded by using the blending of coal tar series oil products and petroleum series oil products as raw oil to produce the carbon black, and the problem that the supply of the raw oil of the carbon black is not in demand is solved.
Detailed Description
The invention relates to a method for producing carbon black by blending raw oil, in particular to a method for producing carbon black by using coal tar series oil products and petroleum series oil products as raw oil, which expands the source of raw oil for producing carbon black, wherein the volume proportion of the coal tar series oil products in the blended raw oil is 20-80%, the volume proportion of the petroleum series oil products in the blended raw oil is 20-80%, a throat pipe section is arranged between the rear part of a combustion section and a reaction section of a reaction furnace, the diameter of the throat pipe section is reduced by about 5-10% compared with the diameter of the reaction section, the pressure of the reaction system in the reaction furnace is increased by 5% -20%, the pressure of the reaction system reaches above 55KPa, the reaction process is strengthened, and the generation and conversion of the raw oil to the carbon black are. The charging pressure of the charging raw oil is increased by 10% -30% on the basis of the existing process conditions, the raw oil atomization effect is improved, and the raw oil processing capacity is improved. When gas fuel is used as fuel of the carbon black reaction furnace, the adjustable swirler is arranged at the combustion section, so that the flow state of the fuel and combustion-supporting air in the combustion furnace can be changed, the combustion process is enhanced, the turbulence degree of high-temperature air flow entering the reaction section is properly improved, the collision probability of reaction materials in the carbon black production reaction process is increased, and the carbon black generation reaction speed is favorably improved; the diameter difference between the reaction section and the quench section, higher raw material oil pressure and better atomization effect are arranged in the reaction furnace, so that the quality of the carbon black produced by adopting the mixed raw material oil is qualified, and the index of the carbon black is not lower than that of the carbon black produced by using the carbon black raw material oil which is habitually applied.
In order to meet the reaction condition of raw oil mixing, the refractory materials are selected at each section of the reaction furnace as follows:
a combustion section: corundum brick (machine-pressed and sintered at 1700 ℃ or by using chromium corundum brick) as lining and alumina hollow sphere castable (Al) as secondary outer layer2O3Not less than 95 percent) and the outermost layer of light clay brick.
A throat section: corundum bricks (or chrome corundum bricks) as an inner lining and alumina hollow sphere castable as an outer layer.
A reaction section: corundum brick as inner lining, alumina hollow ball as secondary outer layer as pouring material and light clay brick as outermost layer.
The masonry mode adopts the mode of external masonry, internal masonry and then clamping pouring.
The process flow is as follows:
the fuel and the preheated air are fully mixed and completely combusted in the combustion section of the reaction furnace, and high-temperature airflow is generated and enters the throat section of the reaction furnace. The raw oil mixed according to a certain proportion is filtered, then is pumped into a raw oil preheater by a raw oil pump, heated and sprayed into a throat pipe section of a reaction furnace to contact with high-temperature and high-speed airflow, and then is cracked to generate carbon black.
The diameter of the throat section is reduced by about 5-10% compared with the diameter of the reaction section, a throat section is arranged between the rear part of the combustion section of the reaction furnace and the reaction section, the diameter of the throat section is a straight section which is about 300mm long, the diameter of the throat section is reduced by about 5-15% compared with the diameter of the reaction section, then the throat section is gradually enlarged and connected with the quenching section, the section can be used as the tail end of the reaction furnace according to different varieties of carbon black production, a plurality of quenching water injection ports can also be arranged as the first section of the quenching section, and the quenching water is injected into the flue gas to rapidly reduce the temperature of the flue gas so as to terminate.
After most of heat energy of the carbon black flue gas is recovered by heat exchange equipment such as an air preheater, a raw oil preheater and the like, the carbon black flue gas enters a collecting system (a bag filter or a combination of a cyclone separator and the bag filter), and the collected carbon black enters an air conveying system. The carbon black entering the air conveying system is subjected to ferromagnetic impurity removal and ultrafine grinding by a micron grinder, a magnetic separator and the like, then is collected by a collecting cyclone separator, enters a wet granulating machine for granulation through an airtight valve and a screw conveyor, and is packaged into a finished product after being dried by a dryer.
Claims (7)
1. A method for producing carbon black by blending raw oil is characterized in that the volume of coal tar series oil products in the blended raw oil is 20-80%, the volume of petroleum series oil products in the blended raw oil is 20-80%, a throat pipe section is arranged between the rear part of a combustion section and a reaction section of a reaction furnace, the diameter of the throat pipe section is reduced by about 5-10% compared with the diameter of the reaction section at the minimum position, the pressure of a reaction system in the reaction furnace is increased by 5-20%, the pressure of the reaction system is not lower than 55KPa, the charging pressure of the raw oil in the furnace is increased by 10-30%, and when gas fuel is used as the fuel of the carbon black reaction furnace, an adjustable swirler is arranged at the combustion section.
2. The method for producing carbon black by compounding raw oil according to claim 1, wherein the carbon black reaction furnace comprises:
a combustion section: corundum brick (machine-pressed and sintered at 1700 ℃ or by using chromium corundum brick) as lining and alumina hollow sphere castable (Al) as secondary outer layer2O3Not less than 95%), and light clay brick at the outermost layer;
a throat section: the inner lining corundum brick (or chrome corundum brick) and the outer layer alumina hollow ball castable;
a reaction section: corundum brick as inner lining, alumina hollow ball as secondary outer layer as pouring material and light clay brick as outermost layer.
3. The method for producing carbon black by compounding raw oil according to claim 1, wherein the method comprises the following steps: the masonry mode adopts the mode of external masonry, internal masonry and then clamping pouring.
4. The method for producing carbon black by compounding raw oil according to claim 1, wherein the method comprises the following steps: the pressure of the reaction system in the reaction furnace is preferably increased by 10 to 15 percent.
5. The method for producing carbon black by compounding raw oil according to claim 1, wherein the method comprises the following steps: the raw oil pressure is improved by 10 to 20 percent through optimization.
6. The method for producing carbon black by compounding raw oil according to claim 1, wherein the method comprises the following steps: the coal tar series includes anthracene oil, coal tar or carbon black oil.
7. The method for producing carbon black by compounding raw oil according to claim 1, wherein the method comprises the following steps: the petroleum series oil products comprise ethylene tar, catalytic cracking tower bottom oil or solvent extract oil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010386030.6A CN111393878A (en) | 2020-05-09 | 2020-05-09 | Method for producing carbon black by mixing raw oil |
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| CN202010386030.6A CN111393878A (en) | 2020-05-09 | 2020-05-09 | Method for producing carbon black by mixing raw oil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113265162A (en) * | 2021-06-07 | 2021-08-17 | 青岛德固特节能装备股份有限公司 | Method for conveying and atomizing raw oil |
| CN114854232A (en) * | 2022-07-07 | 2022-08-05 | 山西安仑化工有限公司 | Special carbon black for polyethylene and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203373306U (en) * | 2013-07-06 | 2014-01-01 | 山西永东化工股份有限公司 | Pipework of carbon black reacting furnace |
| US9217944B2 (en) * | 2007-04-24 | 2015-12-22 | Cabot Corporation | Low structure carbon black and method of making same |
| CN206457448U (en) * | 2017-01-23 | 2017-09-01 | 新疆久泰化工有限公司 | A kind of carbon black reaction workshop section and carbon black process system |
| CN110684376A (en) * | 2019-10-18 | 2020-01-14 | 邯郸黑猫炭黑有限责任公司 | Method for producing N375 carbon black by mixed oil |
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2020
- 2020-05-09 CN CN202010386030.6A patent/CN111393878A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9217944B2 (en) * | 2007-04-24 | 2015-12-22 | Cabot Corporation | Low structure carbon black and method of making same |
| CN203373306U (en) * | 2013-07-06 | 2014-01-01 | 山西永东化工股份有限公司 | Pipework of carbon black reacting furnace |
| CN206457448U (en) * | 2017-01-23 | 2017-09-01 | 新疆久泰化工有限公司 | A kind of carbon black reaction workshop section and carbon black process system |
| CN110684376A (en) * | 2019-10-18 | 2020-01-14 | 邯郸黑猫炭黑有限责任公司 | Method for producing N375 carbon black by mixed oil |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113265162A (en) * | 2021-06-07 | 2021-08-17 | 青岛德固特节能装备股份有限公司 | Method for conveying and atomizing raw oil |
| CN114854232A (en) * | 2022-07-07 | 2022-08-05 | 山西安仑化工有限公司 | Special carbon black for polyethylene and preparation method and application thereof |
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Application publication date: 20200710 |