CN102732067B - Method for preparing carbon black with coal serving as raw material - Google Patents
Method for preparing carbon black with coal serving as raw material Download PDFInfo
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Abstract
The invention relates to a method for preparing carbon black with coal serving as a raw material, which belongs to the field of coal chemical industry. According to the method, the coal is adopted to replace tar and natural gas as the raw material for producing the carbon black. The method comprises the following steps of: firstly, pre-processing the raw material coal to remove impurities such as coal gangue, iron wires, wood dust and the like, and sieving and then crushing the coal; performing dense-medium shallow-slot separation on the pre-processed raw coal to obtain fine coal; adding chemical agent into the raw coal, and performing superfine grinding on the raw coal; roasting the raw coal at a high temperature to remove the impurities of the raw coal so as to obtain pure carbon; and crushing the pure carbon to obtain the carbon black. The carbon black is directly obtained by adding the chemical agent during the preparation process, and the preparation process is simple. The obtained coal-based carbon black has an extremely high reinforcing effect and processing properties, the physical and chemical indicators of the coal-based carbon black meets or is close to the standard of soft carbon black of the Ministry of Chemical Industry, and the tensile strength, the 300% stretching strength, the wear resistance and other indicators of the carbon black meet or are close to the indictors of hard carbon black, so that the carbon black meets the high requirement on the performance of modern rubber and plastic products.
Description
Technical field
The present invention relates to a kind ofly take coal as raw material prepares the method for colour carbon black, belong to coal chemical technology.
Background technology
Carbon black, as one of the most ancient industrial raw material, is widely used in rubber industry, is used as strengthening agent and filler.The carbon black black powder shape material that to be hydro carbons under the strict processing condition of controlling form through gas phase incomplete combustion or pyrolysis.Its composition is mainly elemental carbon, and contains a small amount of oxygen, hydrogen and sulphur etc.The carbon black particle almost spherical, particle diameter is between between 10～500 μ m.Painted and the toning of take is called colour carbon black as the carbon black of Main Function.Colour carbon black has mineral dye and the incomparable characteristic of organic dye, and its purposes is more and more extensive, is mainly used at present the industries such as plastics, printing ink, coating, chemical fibre, process hides, xerox, light-shielding sheet.Colour carbon black is mainly with oven process, lamp black method, drum process and channel process production, and the former is topmost production method.Furnace treated black is to generate in a closed reactor (Reaktionsofen), Sweet natural gas (or heavy oil) and air mixed, burning forms high temperature (approximately 1800～2000 ℃) flame (hot gas flow), in this flame of carbon black raw oil (clarified oil, ethylene bottom oil or coal tar oils oil product) spray people, through cracking, generate carbon black and flue gas, contain the flue gas of carbon black through the laggard people's tripping device of spray people's water quick cooling (to below 900 ℃), after separation, obtain carbon black products.With the carbon black that oven process generates, generally be neutrality or weakly alkaline, according to the requirement of using, this carbon black need, through oxide treatment, make it be acid.The post-treating method the most extensively adopted at present is " ozone fluidized-bed oxidizing process ".Colour carbon black has dividing of granular and powdery, and dustless carbon black is formed by the granulation in tablets press of powdery carbon black.
Current plastic pigment carbon black production process route is: the first step adopts the oven process production technique, substantially, according to the production technique of former rubber grade carbon black N220, suitably improves iodine absorption value, and controls its oil-absorption(number) at 10m
2/ g, produce the basic pattern of colour carbon black; Second step adopts the method for ozone oxidation, the colour carbon black sample of producing is carried out to suitably more shallow oxidation, so that its volatile matter is controlled between 1.2 to 2.0%.(HuBing Huan, the preparation of the fiery .C364 colour carbon black of woods gold (plastics are used). chemical engineering and equipment, 2009 (04): 1-5).Its complex manufacturing, equipment is many, energy consumption is high, the rate of recovery is low, and cost is high.
The production of colour carbon black at present is all on the basis of the carbon black of producing, and it is again processed and obtains colour carbon black.The present invention be take raw coal and is raw material, obtains cleaned coal through the pre-treatment washing, in preparing the process of carbon black, adds specific chemical reagent, makes it in reaction process, improve the quality of carbon black, makes the carbon black obtained meet the requirement of colour carbon black.The pre-treatment washing method for clean coal processed of raw coal is as described in document, (the golden red star. utilize the practice of Washing Steam Coal explained hereafter coking coal cleans. Coal dressing and comprehensive utilization, 1996 (04): 70-71).
Summary of the invention
The objective of the invention is in order to solve existing colour carbon black complex manufacturing, the shortcoming that cost is high, provide a kind of and take coal and prepare the method for colour carbon black as raw material.
The objective of the invention is to be achieved through the following technical solutions:
Of the present inventionly a kind ofly take coal as raw material prepares the method for colour carbon black, comprise the following steps:
Step 1, screen and prepare the cleaned coal that particle diameter is less than 13mm with jig;
Step 2, add chemical reagent in cleaned coal, the chemical reagent quality is 0.1%～5% of quality of cleaned coal, and mixed grinding obtains the pre-reaction thing;
Step 3, the pre-reaction thing of step 2 gained is joined in high temperature oxidation furnace, oxygen-supply quantity is 3～10 times of pre-reaction amount, reaction under 1000 ℃～1500 ℃, reaction is quickly cooled to room temperature after finishing, and the product in high temperature oxidation furnace is pulverized and is namely obtained the colour carbon black product.
Chemical reagent described in step 2 is any one in copper sulfate, vitriolate of tartar, sodium carbonate, Sodium Nitrite, Manganse Dioxide.
Beneficial effect
1, of the present inventionly a kind ofly take coal and prepare the method for colour carbon black as raw material, utilize coal to replace tar and Sweet natural gas to be the raw material production carbon black, both alleviate the problem of oil, natural gas energy resource shortage, increased again the added value of coal resource, greatly reduced the cost of manufacturing carbon black.
2, of the present inventionly a kind ofly take coal as raw material prepares the method for colour carbon black, in preparation process, add chemical reagent and directly obtain colour carbon black, preparation technology is simple.
3, with the colour carbon black that a process for preparing have blackness, the characteristics such as tinting strength is good, is easy to disperse, and glossiness is better, and fabulous strengthening action and processing performance are arranged, meet the high request of modern rubber plastic product performance.
Embodiment
Below in conjunction with embodiment, content of the present invention is described further.
Embodiment 1
Step 1, raw coal are divided into and are greater than 150mm, 150～13mm and are less than tri-grade products of 13mm through double-deck sizing screen.Be less than 13mm grade smalls directly as product, be greater than 150mm level ultra large coal and after the property picking, be crushed to below 150mm on inspection, then together with 150～13mm level lump coal, enter the master and wash system, the picking foreign material dump.Enter the main raw coal of washing system and first carry out the 6mm desliming, the 6mm smalls that is less than removed mixes the smalls product after sieve-bend screen, centrifuge dewatering; Lump coal after desliming carries out the sorting of dense medium shallow slot; The cleaned coal sub-elected is by a de-mediated of stationary screen, dehydration, then after the de-mediated of scalping screen secondary grading, dehydration as final head coal product;
In step 2,5kg head coal product, add the vitriolate of tartar of 0.1kg, be blended on ball mill and grind 10h, obtain the pre-reaction thing;
Step 3, the pre-reaction thing of step 2 gained is joined in high temperature oxidation furnace, oxygen-supply quantity is 3 times of pre-reaction amount, reaction is 3 hours under 1000 ℃, and reaction is quickly cooled to room temperature after finishing, and the product in high temperature oxidation furnace is pulverized and namely obtained the colour carbon black product through micron disintegrator.The indexs such as its tensile strength, 300% tensile modulus, fastness to rubbing have reached the index of hard (carbon) black, meet the high request of modern rubber plastic product performance.
Embodiment 2
Step 1, raw coal are divided into and are greater than 150mm, 150～13mm and are less than tri-grade products of 13mm through double-deck sizing screen.Be less than 13mm grade smalls directly as product, be greater than 150mm level ultra large coal and after the property picking, be crushed to below 150mm on inspection, then together with 150～13mm level lump coal, enter the master and wash system, the picking foreign material dump.Enter the main raw coal of washing system and first carry out the 6mm desliming, the 6mm smalls that is less than removed mixes the smalls product after sieve-bend screen, centrifuge dewatering; Lump coal after desliming carries out the sorting of dense medium shallow slot; The cleaned coal sub-elected is by a de-mediated of stationary screen, dehydration, then after the de-mediated of scalping screen secondary grading, dehydration as final head coal product;
In step 2,50kg head coal product, add the copper sulfate of 1kg, be blended on ball mill and grind 15h, obtain the pre-reaction thing;
Step 3, the pre-reaction thing of step 2 gained is joined in high temperature oxidation furnace, oxygen-supply quantity is 10 times of pre-reaction amount, reaction is 4 hours under 1500 ℃, and reaction is quickly cooled to room temperature after finishing, and the product in high temperature oxidation furnace is pulverized and namely obtained the colour carbon black product through micron disintegrator.Wherein the indexs such as tensile strength, 300% tensile modulus, fastness to rubbing, near the index of hard (carbon) black, meet the high request of modern rubber plastic product performance.
Embodiment 3
Step 1, raw coal are divided into and are greater than 150mm, 150～13mm and are less than tri-grade products of 13mm through double-deck sizing screen.Be less than 13mm grade smalls directly as product, be greater than 150mm level ultra large coal and after the property picking, be crushed to below 150mm on inspection, then together with 150～13mm level lump coal, enter the master and wash system, the picking foreign material dump.Enter the main raw coal of washing system and first carry out the 6mm desliming, the 6mm smalls that is less than removed mixes the smalls product after sieve-bend screen, centrifuge dewatering; Lump coal after desliming carries out the sorting of dense medium shallow slot; The cleaned coal sub-elected is by a de-mediated of stationary screen, dehydration, then after the de-mediated of scalping screen secondary grading, dehydration as final head coal product;
In step 2,50kg head coal product, add the sodium carbonate of 1kg, be blended on ball mill and grind 15h, obtain the pre-reaction thing;
Step 3, the pre-reaction thing of step 2 gained is joined in high temperature oxidation furnace, oxygen-supply quantity is 3～10 times of pre-reaction amount, reaction is at least 3 hours under 1000 ℃～1500 ℃, and reaction is quickly cooled to room temperature after finishing, and the product in high temperature oxidation furnace is pulverized and namely obtained the colour carbon black product.Wherein the indexs such as tensile strength, 300% tensile modulus, fastness to rubbing have reached the index of hard (carbon) black, meet the high request of modern rubber plastic product performance.
Embodiment 4
Step 1, raw coal are divided into and are greater than 150mm, 150～13mm and are less than tri-grade products of 13mm through double-deck sizing screen.Be less than 13mm grade smalls directly as product, be greater than 150mm level ultra large coal and after the property picking, be crushed to below 150mm on inspection, then together with 150～13mm level lump coal, enter the master and wash system, the picking foreign material dump.Enter the main raw coal of washing system and first carry out the 6mm desliming, the 6mm smalls that is less than removed mixes the smalls product after sieve-bend screen, centrifuge dewatering; Lump coal after desliming carries out the sorting of dense medium shallow slot; The cleaned coal sub-elected is by a de-mediated of stationary screen, dehydration, then after the de-mediated of scalping screen secondary grading, dehydration as final head coal product;
In step 2,50kg head coal product, add the Sodium Nitrite of 1kg, be blended on ball mill and grind 15h, obtain the pre-reaction thing;
Step 3, the pre-reaction thing of step 2 gained is joined in high temperature oxidation furnace, oxygen-supply quantity is 3～10 times of pre-reaction amount, reaction is at least 3 hours under 1000 ℃～1500 ℃, and reaction is quickly cooled to room temperature after finishing, and the product in high temperature oxidation furnace is pulverized and namely obtained the colour carbon black product.Wherein the indexs such as tensile strength, 300% tensile modulus, fastness to rubbing, near the index of hard (carbon) black, meet the high request of modern rubber plastic product performance.
Embodiment 5
Step 1, raw coal are divided into and are greater than 150mm, 150～13mm and are less than tri-grade products of 13mm through double-deck sizing screen.Be less than 13mm grade smalls directly as product, be greater than 150mm level ultra large coal and after the property picking, be crushed to below 150mm on inspection, then together with 150～13mm level lump coal, enter the master and wash system, the picking foreign material dump.Enter the main raw coal of washing system and first carry out the 6mm desliming, the 6mm smalls that is less than removed mixes the smalls product after sieve-bend screen, centrifuge dewatering; Lump coal after desliming carries out the sorting of dense medium shallow slot; The cleaned coal sub-elected is by a de-mediated of stationary screen, dehydration, then after the de-mediated of scalping screen secondary grading, dehydration as final head coal product;
In step 2,50kg head coal product, add the Manganse Dioxide of 1kg, be blended on ball mill and grind 15h, obtain the pre-reaction thing;
Step 3, the pre-reaction thing of step 2 gained is joined in high temperature oxidation furnace, oxygen-supply quantity is 3～10 times of pre-reaction amount, reaction is at least 3 hours under 1000 ℃～1500 ℃, and reaction is quickly cooled to room temperature after finishing, and the product in high temperature oxidation furnace is pulverized and namely obtained the colour carbon black product.Wherein the indexs such as tensile strength, 300% tensile modulus, fastness to rubbing have reached the index of soft carbon, meet the high request of modern rubber plastic product performance.
Be below the Performance Ratio of the application colour carbon black for preparing of method of the present invention and other carbon blacks:
Claims (1)
1. take coal as raw material prepares the method for colour carbon black for one kind, it is characterized in that: comprise the following steps:
Step 1, screen and prepare the cleaned coal that particle diameter is less than 13mm with jig;
Step 2, add chemical reagent in cleaned coal, the chemical reagent quality is 0.1%～5% of quality of cleaned coal, and mixed grinding obtains the pre-reaction thing;
Step 3, the pre-reaction thing of step 2 gained is joined in high temperature oxidation furnace, oxygen-supply quantity is 3～10 times of pre-reaction amount, reaction under 1000 ℃～1500 ℃, reaction is quickly cooled to room temperature after finishing, and the product in high temperature oxidation furnace is pulverized and is namely obtained the colour carbon black product;
Described chemical reagent is any one in copper sulfate, vitriolate of tartar, sodium carbonate, Sodium Nitrite, Manganse Dioxide.
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| CN104151877A (en) * | 2014-08-08 | 2014-11-19 | 四川理工学院 | Method for modifying ordinary carbon black into pigment carbon black |
| CN108793119A (en) * | 2017-05-03 | 2018-11-13 | 申广 | A kind of carbon black and graphene microchip composite material technology of preparing |
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| SU488839A1 (en) * | 1969-04-24 | 1975-10-25 | Центральное конструкторское бюро нефтеаппаратуры | Soot Reactor |
| AU8721175A (en) * | 1975-01-10 | 1977-06-09 | Exxon Research Engineering Co | Carbon black feedstock |
| ZA765229B (en) * | 1975-10-01 | 1977-08-31 | Goodyear Tire & Rubber | Carbon black from solvent extracted coal |
| US4590056A (en) * | 1985-03-01 | 1986-05-20 | Ohio University | Method of making carbon black having low ash content from carbonaceous materials |
| CN86100842A (en) * | 1986-02-01 | 1987-01-31 | 成都科技大学 | The making method of melanocyte |
| CN1262624C (en) * | 2004-12-16 | 2006-07-05 | 太原理工大学 | Combined process for dry distillation of coal and production of carbon black by plasma cracking |
| CN101475758B (en) * | 2009-01-16 | 2012-01-18 | 山西永东化工股份有限公司 | Method for preparing pigment black carbon by grafting yellow humic acid degrading modifier with common black carbon |
| CN102250497B (en) * | 2011-05-26 | 2014-04-16 | 芮立 | Preparation method of novel carbon black for rubbers |
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