CN102732067A - 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 of is the method for feedstock production colour carbon black with the coal, belongs to coal chemical technology.
Background technology
Carbon black is widely used in rubber industry as one of the most ancient industrial raw material, is used as strengthening agent and filler.The carbon black black powder shape material that to be hydro carbons under the processing condition of strictness control form through gas phase incomplete combustion or pyrolysis.Its composition mainly is an elemental carbon, and contains small amount of oxygen, hydrogen and sulphur etc.The carbon black particle almost spherical, particle diameter is between between 10～500 μ m.With painted and toning serves as that the main carbon black that acts on is called colour carbon black.Colour carbon black has mineral dye and the incomparable characteristic of organic dye, and its purposes more and more widely is mainly used in industries such as plastics, printing ink, coating, chemical fibre, process hides, xerox, light-shielding sheet at present.Colour carbon black is mainly with oven process, lamp black method, drum process and channel process production, and the former is topmost working method.Furnace treated black is in a closed reactor (Reaktionsofen), to generate; Sweet natural gas (or heavy oil) and air mixed; Burning forms high temperature (about 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, generates carbon black and flue gas through cracking; Contain the sooty flue gas through the laggard people's tripping device of spray people's water quick cooling (to below 900 ℃), obtain carbon black products after the separation.The carbon black that generates with oven process generally is neutrality or weakly alkaline, and according to the requirement of using, this carbon black needs through oxide treatment, makes it be acid.The post-treating method that the most extensively adopts at present is " an ozone fluidized-bed oxidizing process ".Colour carbon black has granular and branch powdery, and dustless carbon black is formed by the granulation in tablets press of powdery carbon black.
Current plastics colour carbon black production process route is: the first step adopts the oven process production technique, 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 basically
2/ g produces the basic pattern of colour carbon black; Second step was adopted ozone oxidation method, the colour carbon black appearance of being produced was carried out suitably more shallow oxidation, so that its volatile matter is controlled between 1.2 to 2.0%.(Hu Ping 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 recovery is low, and cost is high.
The production of colour carbon black at present all is on the sooty basis that produces, and it is carried out reworking obtain colour carbon black.The present invention is raw material with the raw coal, obtains cleaned coal through the pre-treatment washing, in preparation sooty process, adds particular chemical reagent, makes it in reaction process, improve the sooty quality, makes the carbon black that obtains satisfy the requirement of colour carbon black.The pre-treatment washing system method for clean coal such as the document of raw coal are said, (the golden red star. utilize the steam coal washing process to produce the practice of coking coal cleans. coal processing and comprehensive utilization, 1996 (04): 70-71).
Summary of the invention
The objective of the invention is to have the colour carbon black complex manufacturing now in order to solve, the shortcoming that cost is high, providing a kind of is the method for feedstock production colour carbon black with the coal.
The objective of the invention is to realize through following technical scheme:
Of the present invention a kind of be the method for feedstock production colour carbon black with the coal, comprise the following steps:
Step 1, with jig screening and preparation particle diameter cleaned coal less than 13mm;
Step 2, in cleaned coal, add chemical reagent, the chemical reagent quality is 0.1%～5% of a 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 the high temperature oxidation stove; Oxygen-supply quantity is 3～10 times of pre-reaction amount; 1000 ℃～1500 ℃ reactions down, reaction is quickly cooled to room temperature after finishing, and the product in the high temperature oxidation stove is pulverized and promptly obtained the colour carbon black product.
Chemical reagent described in the step 2 is any one in copper sulfate, vitriolate of tartar, yellow soda ash, Sodium Nitrite, the Manganse Dioxide.
Beneficial effect
1, of the present invention a kind of be the method for feedstock production colour carbon black with the coal; Utilize coal to replace tar and Sweet natural gas to be the raw material production carbon black; Both alleviated oil, natural gas energy resource problem of shortage, increased the added value of coal resource again, and greatly reduced and make the sooty cost.
2, of the present invention a kind of be the method for feedstock production colour carbon black with the coal, in the 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, characteristics such as tinting strength is good, is easy to disperse, and glossiness is better, and fabulous strengthening action and use characteristics are arranged, satisfy the high request of modern rubber plastic product properties.
Embodiment
Below in conjunction with embodiment content of the present invention is described further.
Embodiment 1
Step 1, raw coal are divided into greater than 150mm, 150～13mm with less than three grade products of 13mm through double-deck sizing screen., be crushed to below the 150mm after the property picking on inspection greater than 150mm level ultra large coal directly as product less than 13mm grade smalls, get into the master with 150～13mm level lump coal then and wash system, the picking foreign material dump.Get into the main raw coal of washing system and carry out the 6mm desliming earlier, what remove mixes the smalls product less than the 6mm smalls behind sieve-bend screen, centrifuge dewatering; Lump coal after the desliming carries out the sorting of dense medium shallow slot; The cleaned coal that sub-elects is by a de-mediated of stationary screen, dehydration, again through scalping screen secondary classification de-mediated, dehydration back as final head coal product;
Add the vitriolate of tartar of 0.1kg in step 2, the 5kg head coal product, be blended in and grind 10h on the ball mill, obtain the pre-reaction thing;
Step 3, the pre-reaction thing of step 2 gained is joined in the high temperature oxidation stove; Oxygen-supply quantity is 3 times of pre-reaction amount; Reacted 3 hours down at 1000 ℃, reaction is quickly cooled to room temperature after finishing, and the product in the high temperature oxidation stove is pulverized through the micron kibbler and promptly obtained the colour carbon black product.Indexs such as its tensile strength, 300% tensile modulus, fastness to rubbing have reached the index of hard(carbon)black, satisfy the high request of modern rubber plastic product properties.
Embodiment 2
Step 1, raw coal are divided into greater than 150mm, 150～13mm with less than three grade products of 13mm through double-deck sizing screen., be crushed to below the 150mm after the property picking on inspection greater than 150mm level ultra large coal directly as product less than 13mm grade smalls, get into the master with 150～13mm level lump coal then and wash system, the picking foreign material dump.Get into the main raw coal of washing system and carry out the 6mm desliming earlier, what remove mixes the smalls product less than the 6mm smalls behind sieve-bend screen, centrifuge dewatering; Lump coal after the desliming carries out the sorting of dense medium shallow slot; The cleaned coal that sub-elects is by a de-mediated of stationary screen, dehydration, again through scalping screen secondary classification de-mediated, dehydration back as final head coal product;
Add the copper sulfate of 1kg in step 2, the 50kg head coal product, be blended in and grind 15h on the ball mill, obtain the pre-reaction thing;
Step 3, the pre-reaction thing of step 2 gained is joined in the high temperature oxidation stove; Oxygen-supply quantity is 10 times of pre-reaction amount; Reacted 4 hours down at 1500 ℃, reaction is quickly cooled to room temperature after finishing, and the product in the high temperature oxidation stove is pulverized through the micron kibbler and promptly obtained the colour carbon black product.Wherein indexs such as tensile strength, 300% tensile modulus, fastness to rubbing satisfy the high request of modern rubber plastic product properties near the index of hard(carbon)black.
Embodiment 3
Step 1, raw coal are divided into greater than 150mm, 150～13mm with less than three grade products of 13mm through double-deck sizing screen., be crushed to below the 150mm after the property picking on inspection greater than 150mm level ultra large coal directly as product less than 13mm grade smalls, get into the master with 150～13mm level lump coal then and wash system, the picking foreign material dump.Get into the main raw coal of washing system and carry out the 6mm desliming earlier, what remove mixes the smalls product less than the 6mm smalls behind sieve-bend screen, centrifuge dewatering; Lump coal after the desliming carries out the sorting of dense medium shallow slot; The cleaned coal that sub-elects is by a de-mediated of stationary screen, dehydration, again through scalping screen secondary classification de-mediated, dehydration back as final head coal product;
Add the yellow soda ash of 1kg in step 2, the 50kg head coal product, be blended in and grind 15h on the ball mill, obtain the pre-reaction thing;
Step 3, the pre-reaction thing of step 2 gained is joined in the high temperature oxidation stove; Oxygen-supply quantity is 3～10 times of pre-reaction amount; Reacted at least 3 hours down at 1000 ℃～1500 ℃, reaction is quickly cooled to room temperature after finishing, and the product in the high temperature oxidation stove is pulverized and promptly obtained the colour carbon black product.Wherein indexs such as tensile strength, 300% tensile modulus, fastness to rubbing have reached the index of hard(carbon)black, satisfy the high request of modern rubber plastic product properties.
Embodiment 4
Step 1, raw coal are divided into greater than 150mm, 150～13mm with less than three grade products of 13mm through double-deck sizing screen., be crushed to below the 150mm after the property picking on inspection greater than 150mm level ultra large coal directly as product less than 13mm grade smalls, get into the master with 150～13mm level lump coal then and wash system, the picking foreign material dump.Get into the main raw coal of washing system and carry out the 6mm desliming earlier, what remove mixes the smalls product less than the 6mm smalls behind sieve-bend screen, centrifuge dewatering; Lump coal after the desliming carries out the sorting of dense medium shallow slot; The cleaned coal that sub-elects is by a de-mediated of stationary screen, dehydration, again through scalping screen secondary classification de-mediated, dehydration back as final head coal product;
Add the Sodium Nitrite of 1kg in step 2, the 50kg head coal product, be blended in and grind 15h on the ball mill, obtain the pre-reaction thing;
Step 3, the pre-reaction thing of step 2 gained is joined in the high temperature oxidation stove; Oxygen-supply quantity is 3～10 times of pre-reaction amount; Reacted at least 3 hours down at 1000 ℃～1500 ℃, reaction is quickly cooled to room temperature after finishing, and the product in the high temperature oxidation stove is pulverized and promptly obtained the colour carbon black product.Wherein indexs such as tensile strength, 300% tensile modulus, fastness to rubbing satisfy the high request of modern rubber plastic product properties near the index of hard(carbon)black.
Embodiment 5
Step 1, raw coal are divided into greater than 150mm, 150～13mm with less than three grade products of 13mm through double-deck sizing screen., be crushed to below the 150mm after the property picking on inspection greater than 150mm level ultra large coal directly as product less than 13mm grade smalls, get into the master with 150～13mm level lump coal then and wash system, the picking foreign material dump.Get into the main raw coal of washing system and carry out the 6mm desliming earlier, what remove mixes the smalls product less than the 6mm smalls behind sieve-bend screen, centrifuge dewatering; Lump coal after the desliming carries out the sorting of dense medium shallow slot; The cleaned coal that sub-elects is by a de-mediated of stationary screen, dehydration, again through scalping screen secondary classification de-mediated, dehydration back as final head coal product;
Add the Manganse Dioxide of 1kg in step 2, the 50kg head coal product, be blended in and grind 15h on the ball mill, obtain the pre-reaction thing;
Step 3, the pre-reaction thing of step 2 gained is joined in the high temperature oxidation stove; Oxygen-supply quantity is 3～10 times of pre-reaction amount; Reacted at least 3 hours down at 1000 ℃～1500 ℃, reaction is quickly cooled to room temperature after finishing, and the product in the high temperature oxidation stove is pulverized and promptly obtained the colour carbon black product.Wherein indexs such as tensile strength, 300% tensile modulus, fastness to rubbing have reached the index of soft carbon, satisfy the high request of modern rubber plastic product properties.
Be that colour carbon black and other sooty performances of using method preparation of the present invention compares below:
Claims (2)
1. one kind is the method for feedstock production colour carbon black with the coal, it is characterized in that: comprise the following steps:
Step 1, with jig screening and preparation particle diameter cleaned coal less than 13mm;
Step 2, in cleaned coal, add chemical reagent, the chemical reagent quality is 0.1%～5% of a 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 the high temperature oxidation stove; Oxygen-supply quantity is 3～10 times of pre-reaction amount; 1000 ℃～1500 ℃ reactions down, reaction is quickly cooled to room temperature after finishing, and the product in the high temperature oxidation stove is pulverized and promptly obtained the colour carbon black product.
2. as claimed in claim 1 a kind of be the method for feedstock production colour carbon black with the coal, it is characterized in that: the chemical reagent described in the step 2 is any one in copper sulfate, vitriolate of tartar, yellow soda ash, Sodium Nitrite, the Manganse Dioxide.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| FR2326455A1 (en) * | 1975-10-01 | 1977-04-29 | Goodyear Tire & Rubber | Carbon black prodn. from coal - by extraction with solvent and pyrolysis or grinding |
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| SU488839A1 (en) * | 1969-04-24 | 1975-10-25 | Центральное конструкторское бюро нефтеаппаратуры | Soot Reactor |
| NL7515194A (en) * | 1975-01-10 | 1976-07-13 | Exxon Research Engineering Co | PROCESS FOR PREPARING A RAW MATERIAL FOR SOOT. |
| FR2326455A1 (en) * | 1975-10-01 | 1977-04-29 | Goodyear Tire & Rubber | Carbon black prodn. from coal - by extraction with solvent and pyrolysis or grinding |
| CN85106251A (en) * | 1985-03-01 | 1986-08-27 | 俄亥俄州大学 | Produce the method for carbon black having low ash content from carbonaceous material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN102732067B (en) | 2013-11-27 |
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