CN103408973A - Low-themogenesis super-wear-resisting carbon black and production technology thereof - Google Patents
Low-themogenesis super-wear-resisting carbon black and production technology thereof Download PDFInfo
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Abstract
The invention provides low-themogenesis super-wear-resisting carbon black and a production technology thereof. According to the technical scheme, the production technology is characterized in that incomplete cracking reaction happens in a reaction furnace so as to generate carbon black exhaust gas by using anthracene oil or a mixture of anthracene oil and coal tar as raw oil and natural gas as fuel without addition of an additive, and the generated carbon black exhaust gas is subjected to post-treatment so as to obtain carbon black particles. The production technology has the most remarkable advantages that the natural gas is used as the fuel, the coal tar and the anthracene oil are mixed in appropriate proportions so as to obtain the raw oil, the adopted raw oil is reasonable in structure, and the carbon black product has relatively good quality and relatively high structure and is extremely small in particle sizes and narrowly distributed, so that vulcanized rubber of the carbon black has super-strong wear-resisting property; heat generated by the vulcanized rubber is relatively low. The powdery carbon black is produced by a micrometer pulverizer, a pelletizer and a drying machine. The production technology is mature and suitable for industrial production and has obvious economic benefits.
Description
Technical field
The present invention relates to a kind of super abrasion resistant carbon black and production technique thereof of high structure low-heat-generation.
Background technology
Carbon black be many hydrocarbons that exist with solid-state, liquid state or gaseous state at high temperature, the unformed charcoal produced through the incomplete combustion cracking.Carbon black specific surface is very wide, and because of its production method difference, the physicochemical property of carbon black also difference are very large.For example, its reinforcement of N121 carbon black, the dispersing property of including at present the ASTM standard in are suitable with the N220 carbon black, and wear resisting property is better than N220, but the heat-dissipating of its cross-linked rubber is all higher than super abrasion furnace black such as N110, N220.It is outstanding that N121 product reinforcing, dispersion and wear resisting property all belong in super abrasion resistant carbon black, and disadvantage is exactly that the cross-linked rubber heat-dissipating is high.
Publication number discloses a kind of super abrasion resistant carbon black and manufacture craft thereof for the patent of [CN102977644A], in the preparation technology of carbon black, it has adopted salt of wormwood as additive, space in the middle of the large aggregate of carbon black can effectively hold little aggregate, forms the embedding state, has weakened the interaction of aggregate inside, also hindered simultaneously the production of network, and network is the major cause lagged behind, therefore when aggregate size greatly, during wider distribution, the cross-linked rubber heat-dissipating is low.Salt of wormwood is as the production of carbon black additive, under the prerequisite that processing condition are determined, can affect to a certain extent the form of carbon black aggregate, makes that its aggregate is less than normal, narrowly distributing, but is unfavorable for improving the thermogenesis performance of cross-linked rubber.
Summary of the invention
The purpose of this invention is to provide a kind of similar N121 product and have higher structure, best reinforcement, dispersion and wear resisting property, simultaneously lower super abrasion resistant carbon black and the production technique thereof of heat-dissipating.
The present invention realizes that the technical scheme that goal of the invention adopts is: the production technique of the super abrasion resistant carbon black of a kind of low-heat-generation, described technique be take the mixture of carbolineum or carbolineum and coal tar as stock oil, take Sweet natural gas as fuel and do not add auxiliary agent, incomplete scission reaction occurs in Reaktionsofen generate carbon black smoke, and the carbon black smoke of generation is obtained to carbon black particle through aftertreatment, key is: described incomplete scission reaction generation carbon black smoke occurs in Reaktionsofen concrete technology step comprises:
A, pressurized air preheating: will be compressed to the air of 165 ~ 190Kpa after air preheater is preheating to 700～800 ℃, and by the hot blast pipeline, deliver to the distribution plenum of Reaktionsofen;
B, fuel and the burning of heat of compression air mixed: Sweet natural gas is sent into to the combustion chamber of Reaktionsofen, and the warm air mixed firing of sending with above-mentioned distribution plenum, temperature of combustion is controlled at 1900 ~ 1927 ℃;
C, scission reaction: the stock oil that by temperature after preheating is 180 ~ 260 ℃ is sprayed into by the trunnion section of Reaktionsofen, through atomization, shearing, at the conversion zone of Reaktionsofen, carries out the scission reaction of 6 ~ 20 milliseconds, produces carbon black smoke.
The super abrasion resistant carbon black of a kind of low-heat-generation, key is: described carbon black be take carbolineum or carbolineum and coal tar mixture as stock oil, take Sweet natural gas as fuel, do not add auxiliary agent, and based on the super abrasion furnace black oven process, be prepared from, wherein carbolineum and coal tar by weight the mark ratio be: (8.5:1.5) ~ (10:0.001).
The most significant advantage of the present invention is: the present invention be take Sweet natural gas and is fuel, coal tar, carbolineum are mixed into stock oil with suitable proportion, the stock oil adopted is rational in infrastructure, the carbon black products quality is better, the minimum and narrow distribution of the carbon black products particle diameter that produces, structure is higher, makes its cross-linked rubber have superpower wear resisting property; The present invention is according to the adjustment to stock oil structure, processing condition, optimization in addition, and production process is not used the additives such as salt of wormwood, is beneficial to the formation of carbon black large size aggregate, wider distribution, and then the cross-linked rubber heat-dissipating is lower.The powdery carbon black makes after micron disintegrator, tablets press, drying machine, and mature preparation process, is applicable to industrialized production, has significant economic benefit.
Carbon black products called after LX-IS130 of the present invention, belong to super abrasion furnace black, possesses the serial advantages such as the super abrasion resistant carbon black reinforcement of N121 is good, wear resisting property is good, also improved simultaneously the high shortcoming of N121 product cross-linked rubber heat-dissipating.LX-IS130 carbon black cross-linked rubber heat-dissipating is the 60%-70% of N121 carbon black cross-linked rubber heat-dissipating.
The present invention is described in detail below in conjunction with accompanying drawing.
The accompanying drawing explanation
Fig. 1 is technological process of production schematic diagram of the present invention.
Embodiment
The production technique of the super abrasion resistant carbon black of a kind of low-heat-generation, described technique be take the mixture of carbolineum or carbolineum and coal tar as stock oil, take Sweet natural gas as fuel and do not add auxiliary agent, incomplete scission reaction occurs in Reaktionsofen generate carbon black smoke, and the carbon black smoke of generation is obtained to carbon black particle through aftertreatment, key is: described incomplete scission reaction generation carbon black smoke occurs in Reaktionsofen concrete technology step comprises:
A, pressurized air preheating: will be compressed to the air of 165 ~ 190Kpa after air preheater is preheating to 700～800 ℃, and by the hot blast pipeline, deliver to the distribution plenum of Reaktionsofen;
B, fuel and the burning of heat of compression air mixed: Sweet natural gas is sent into to the combustion chamber of Reaktionsofen, and the warm air mixed firing of sending with above-mentioned distribution plenum, temperature of combustion is controlled at 1900 ~ 1927 ℃;
C, scission reaction: the stock oil that by temperature after preheating is 180 ~ 260 ℃ is sprayed into by the trunnion section of Reaktionsofen, through atomization, shearing, at the conversion zone of Reaktionsofen, carries out the scission reaction of 6 ~ 20 milliseconds, produces carbon black smoke.
In described step C, the composition of stock oil is carbolineum or is by ratio of weight and the number of copies the carbolineum of (8.5:1.5) ~ (10:0.001) and the mixture of coal tar.
In described step C, stock oil is 3800 ~ 4300kg/h by the flow velocity that the trunnion section of Reaktionsofen sprays into.
The step of described aftertreatment comprises:
D, flue gas are cooling: the carbon black smoke obtained in step C is carried out to a chilling cooling at the Reaktionsofen quench zone, then, by after the carbon black smoke heating after the chilling cooling, carry out the cooling of secondary chilling and flue-gas temperature is down to 260 ~ 290 ℃;
Carbon black smoke after E, the processing of lowering the temperature is sent into main bag filter and is collected, and the carbon black of collection is pulverized and delivered to the collection cyclonic separator by the wind fan through micron disintegrator;
The carbon black that F, described cyclonic separator are collected is through granulator granulation, and the carbon black particle particle diameter of control 55% ~ 65% is in 0.5 ~ 1.4mm scope;
G, the carbon black particle drying machine obtained after granulation is carried out to drying obtain the super wear-resisting charcoal of low-heat-generation.
In described stock oil, the moisture of each oil product counts by weight percentage, and all is less than 1.2%.
The super abrasion resistant carbon black of a kind of low-heat-generation, key is: described carbon black be take carbolineum or carbolineum and coal tar mixture as stock oil, take Sweet natural gas as fuel, do not add auxiliary agent, and based on the super abrasion furnace black oven process, be prepared from, wherein carbolineum and coal tar by weight the mark ratio be: (8.5:1.5) ~ (10:0.001).
In described stock oil, the moisture of each oil product counts by weight percentage, and all is less than 1.2%.
Below provide 4 specific embodiments of preparation technology of the present invention:
Embodiment 1: a kind of super abrasion resistant carbon black of high structure low-heat-generation, and it is to take weight ratio to be stock oil as the carbolineum of 8.5:1.5 and the mixture of coal tar, Sweet natural gas is fuel, does not use additive, adopts super abrasion furnace black oven process production technique to be prepared from; Stock oil treatment capacity scope 4000 ~ 4300kg/h wherein.Various water-in-oils in described stock oil need be less than 2%, and density is between 1.09～1.21g/ml, and oil yield is not less than 50%.
Embodiment 2: with the super abrasion resistant carbon black of super abrasion furnace black oven process production example 1 described high structure low-heat-generation, the production technique concrete steps are as follows:
The air that (1) will be compressed to 170Kpa is preheating to 750 ℃ through air preheater, through the hot blast pipeline, delivers to the distribution plenum of Reaktionsofen;
(2) described fuel is sent into to the combustion chamber of Reaktionsofen, with the warm air mixed firing that above-mentioned distribution plenum is sent, temperature is controlled at 1918 ℃.Described stock oil, after the fuel oil preheating device is preheated to 200 ℃, is sprayed into by the trunnion section of Reaktionsofen, through atomization, shearing, at the conversion zone of Reaktionsofen, carries out the scission reaction (1650 ℃ of conversion zone temperature) of 10 milliseconds, produces carbon black smoke;
(3) described carbon black smoke carries out a chilling (flue-gas temperature is down to 900 ℃) at the Reaktionsofen quench zone, pass through successively again air preheater (flue-gas temperature is down to 650 ℃) and fuel oil preheating device (flue-gas temperature is down to 450 ℃), carry out again the secondary chilling, finally make flue-gas temperature be down to 270 ℃;
(4) carbon black smoke after the cooling enters main bag filter and collects, and the carbon black of collection is pulverized and delivered to the collection cyclonic separator by the wind fan through micron disintegrator, and tail gas is sent into tail gas furnace or for generating;
(5) carbon black collected of described cyclonic separator is through granulator granulation, controls 55% ~ 65% carbon black particle particle diameter in 0.5 ~ 1.4mm scope, then the drying machine is dry get final product, when dry, can use tail gas in tail gas furnace as thermal source.
Embodiment 3: a kind of super abrasion resistant carbon black of high structure low-heat-generation, and it is to take weight ratio to be stock oil as the carbolineum of 9:1 and the mixture of coal tar, Sweet natural gas is fuel, does not use additive, adopts super abrasion furnace black oven process production technique to be prepared from; Stock oil treatment capacity scope 3900 ~ 4200kg/h wherein.Various water-in-oils in described stock oil need be less than 2%, and density is between 1.09～1.21g/ml, and oil yield is not less than 50%.
Embodiment 4: with the super abrasion resistant carbon black of super abrasion furnace black oven process production example 3 described high structure low-heat-generations, the production technique concrete steps are as follows:
The air that (1) will be compressed to 165Kpa is preheating to 700 ℃ through air preheater, through the hot blast pipeline, delivers to the distribution plenum of Reaktionsofen;
(2) described fuel is sent into to the combustion chamber of Reaktionsofen, with the warm air mixed firing that above-mentioned distribution plenum is sent, temperature is controlled at 1900 ℃.Described stock oil, after the fuel oil preheating device is preheated to 180 ℃, is sprayed into by the trunnion section of Reaktionsofen, through atomization, shearing, at the conversion zone of Reaktionsofen, carries out the scission reaction (1600 ℃ of conversion zone temperature) of 6 milliseconds, produces carbon black smoke;
(3) described carbon black smoke carries out a chilling (flue-gas temperature is down to 850 ℃) at the Reaktionsofen quench zone, pass through successively again air preheater (flue-gas temperature is down to 600 ℃) and fuel oil preheating device (flue-gas temperature is down to 370 ℃), carry out again the secondary chilling, finally make flue-gas temperature be down to 260 ℃;
(4) carbon black smoke after the cooling enters main bag filter and collects, and the carbon black of collection is pulverized and delivered to the collection cyclonic separator by the wind fan through micron disintegrator, and tail gas is sent into tail gas furnace or for generating;
(5) carbon black collected of described cyclonic separator is through granulator granulation, controls 55% ~ 65% carbon black particle particle diameter in 0.5 ~ 1.4mm scope, then the drying machine is dry get final product, when dry, can use tail gas in tail gas furnace as thermal source.
Embodiment 5: a kind of super abrasion resistant carbon black of high structure low-heat-generation, and it is to take weight ratio to be stock oil as the carbolineum of 10:0 and the mixture of coal tar, Sweet natural gas is fuel, does not use additive, adopts super abrasion furnace black oven process production technique to be prepared from; Stock oil treatment capacity scope 3800-4100kg/h wherein.Various water-in-oils in described stock oil need be less than 2%, and density is between 1.09～1.21g/ml, and oil yield is not less than 50%.
Embodiment 6: with the super abrasion resistant carbon black of super abrasion furnace black oven process production example 5 described high structure low-heat-generations, the production technique concrete steps are as follows:
The air that (1) will be compressed to 190Kpa is preheating to 800 ℃ through air preheater, through the hot blast pipeline, delivers to the distribution plenum of Reaktionsofen;
(2) described fuel is sent into to the combustion chamber of Reaktionsofen, with the warm air mixed firing that above-mentioned distribution plenum is sent, temperature is controlled at 1927 ℃.Described stock oil, after the fuel oil preheating device is preheated to 260 ℃, is sprayed into by the trunnion section of Reaktionsofen, through atomization, shearing, at the conversion zone of Reaktionsofen, carries out the scission reaction (1700 ℃ of conversion zone temperature) of 20 milliseconds, produces carbon black smoke;
(3) described carbon black smoke carries out a chilling (flue-gas temperature is down to 950 ℃) at the Reaktionsofen quench zone, pass through successively again air preheater (flue-gas temperature is down to 680 ℃) and fuel oil preheating device (flue-gas temperature is down to 500 ℃), carry out again the secondary chilling, finally make flue-gas temperature be down to 290 ℃;
(4) carbon black smoke after the cooling enters main bag filter and collects, and the carbon black of collection is pulverized and delivered to the collection cyclonic separator by the wind fan through micron disintegrator, and tail gas is sent into tail gas furnace or for generating;
(5) carbon black collected of described cyclonic separator is through granulator granulation, controls 55% ~ 65% carbon black particle particle diameter in 0.5 ~ 1.4mm scope, then the drying machine is dry get final product, when dry, can use tail gas in tail gas furnace as thermal source.
LX-IS130 carbon black products index of the present invention is as follows:
| Project | Index |
| Iodine absorption value g/kg | 115±7 |
| Oil-absorption(number) 10 -5m 3/kg | 135±7 |
| Weight loss on heating %≤ | 3.0 |
| 45um washing sieve excess mg/kg≤ | 500 |
| Nitrogen adsorption specific surface area 10 3m 2/kg | 122-127 |
| Tinctorial strength % | 115-125 |
| Ash content %≤ | 1 |
| Volatile matter %≤ | 3.0 |
| PH value | 6-9 |
| Impurity | Nothing |
| Pour into density Kg/m 3 | 250-350 |
It is to explain carbon black specific surface that iodine absorption value, nitrogen adsorb these two, and oil-absorption(number) and tinctorial strength are to reflect carbon structure, particle diameter, and when specific surface area and carbon structure were high, its wear resistance was strong; Some routines that these indexs are carbon black products require test item, LX-IS130 model carbon black detected value in the present invention is different from any super abrasion resistant carbon black in GB, this model carbon black is due to raw material mix, optimization of process conditions, make its aggregate size large, distribute wide, have the advantage that the cross-linked rubber heat-dissipating is low concurrently under the strong prerequisite of wear resistance.
Claims (7)
1. the production technique of the super abrasion resistant carbon black of low-heat-generation, described technique be take the mixture of carbolineum or carbolineum and coal tar as stock oil, take Sweet natural gas as fuel and do not add auxiliary agent, incomplete scission reaction occurs in Reaktionsofen generate carbon black smoke, and the carbon black smoke of generation is obtained to carbon black particle through aftertreatment, it is characterized in that: described incomplete scission reaction generation carbon black smoke occurs in Reaktionsofen concrete technology step comprises:
A, pressurized air preheating: will be compressed to the air of 165 ~ 190Kpa after air preheater is preheating to 700～800 ℃, and by the hot blast pipeline, deliver to the distribution plenum of Reaktionsofen;
B, fuel and the burning of heat of compression air mixed: Sweet natural gas is sent into to the combustion chamber of Reaktionsofen, and the warm air mixed firing of sending with above-mentioned distribution plenum, temperature of combustion is controlled at 1900 ~ 1927 ℃;
C, scission reaction: the stock oil that by temperature after preheating is 180 ~ 260 ℃ is sprayed into by the trunnion section of Reaktionsofen, through atomization, shearing, at the conversion zone of Reaktionsofen, carries out the scission reaction of 6 ~ 20 milliseconds, produces carbon black smoke.
2. the production technique of the super abrasion resistant carbon black of a kind of low-heat-generation according to claim 1, it is characterized in that: in described step C, the composition of stock oil is carbolineum or is by ratio of weight and the number of copies the carbolineum of (8.5:1.5) ~ (10:0.001) and the mixture of coal tar.
3. the production technique of the super abrasion resistant carbon black of a kind of low-heat-generation according to claim 1 is characterized in that: in described step C, stock oil is 3800 ~ 4300kg/h by the flow velocity that the trunnion section of Reaktionsofen sprays into.
4. the production technique of the super abrasion resistant carbon black of a kind of low-heat-generation according to claim 1, it is characterized in that: the step of described aftertreatment comprises:
D, flue gas are cooling: the carbon black smoke obtained in step C is carried out to a chilling cooling at the Reaktionsofen quench zone, then, by after the carbon black smoke heating after the chilling cooling, carry out the cooling of secondary chilling and flue-gas temperature is down to 260 ~ 290 ℃;
Carbon black smoke after E, the processing of lowering the temperature is sent into main bag filter and is collected, and the carbon black of collection is pulverized and delivered to the collection cyclonic separator by the wind fan through micron disintegrator;
The carbon black that F, described cyclonic separator are collected is through granulator granulation, and the carbon black particle particle diameter of control 55% ~ 65% is in 0.5 ~ 1.4mm scope;
G, the carbon black particle drying machine obtained after granulation is carried out to drying obtain the super wear-resisting charcoal of low-heat-generation.
5. the production technique of the super abrasion resistant carbon black of a kind of low-heat-generation according to claim 1, it is characterized in that: in described stock oil, the moisture of each oil product counts by weight percentage, and all is less than 1.2%.
6. super abrasion resistant carbon black of low-heat-generation, it is characterized in that: described carbon black be take carbolineum or carbolineum and coal tar mixture as stock oil, take Sweet natural gas as fuel, do not add auxiliary agent, and based on the super abrasion furnace black oven process, be prepared from, wherein carbolineum and coal tar by weight the mark ratio be: (8.5:1.5) ~ (10:0.001).
7. the super abrasion resistant carbon black of a kind of low-heat-generation according to claim 6, it is characterized in that: in described stock oil, the moisture of each oil product counts by weight percentage, and all is less than 1.2%.
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