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Method for preparing white carbon black by combusting tetramethylsilane and preparation device thereof

A tetramethylsilane and preparation device technology, applied in the direction of silicon oxide, silicon dioxide, etc., can solve the problems of high cost, high energy consumption, and high equipment requirements, and achieve the effects of reduced equipment requirements, energy saving costs, and excellent quality

Inactive Publication Date: 2013-05-01
ZHEJIANG UNIV
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Problems solved by technology

However, it can be seen from its process that this method consumes a lot of energy, has high requirements for equipment, and has high costs.
[0005] It can be seen that the quality of precipitated silica is not high enough and the application fields are limited, while the quality of fumed silica is excellent but the energy consumption is high and the cost is high

Method used

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  • Method for preparing white carbon black by combusting tetramethylsilane and preparation device thereof
  • Method for preparing white carbon black by combusting tetramethylsilane and preparation device thereof

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0027] A method for preparing white carbon black by burning tetramethylsilane, the specific steps comprising:

[0028] A. Tetramethylsilane enters the atomization device from the storage tank 1 through the delivery pump 2, and after being gasified in the atomization device, it is sent to the burner 5 as gaseous tetramethylsilane;

[0029] B. The blower 4 sends air to the burner 5, and the air volume is an excess air coefficient of 1.0 to 1.5;

[0030] C. Tetramethylsilane and air are injected into the burner 5 to fully burn in the furnace 6. The combustion temperature is 800-1400°C. According to the chemical reaction formula: C 4 h 12 Si+8O 2 ==4CO 2 +6H 2 O+SiO 2 , generating white carbon black, water and carbon dioxide;

[0031] D. The high-temperature flue gas flow produced by combustion passes through the flue gas cooler 7 and then en...

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Abstract

The invention relates to the field of material preparation, and aims at providing a method for preparing white carbon black by combusting tetramethylsilane and a preparation device thereof. The method comprises the following steps: atomizing the tetramethylsilane, then sending into a hearth for sufficient combustion, trapping the white carbon black from combustion products through a trap, and finally discharging tail gas into the atmosphere. The preparation device needed by the method comprises a combustor, a storage tank, a delivery pump, an atomization device, a forced draught blower, the hearth, a gas cooler, the trap, an induced draft fan and a chimney. The method combusts the tetramethylsilane (C4H12Si) to obtain the white carbon black, the temperature is much lower than 1,800 DEG C, the equipment requirement is also reduced, the energy is effectively saved, and the cost is saved. The products include the white carbon black, water and carbon dioxide, the method is relatively environmental-friendly, and the produced white carbon black has a good quality.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a method for preparing white carbon black by burning tetramethylsilane and a preparation device thereof. Background technique [0002] Silica is a multifunctional additive, which is widely used in silicone rubber, adhesives, paints and coatings because of its superior stability, reinforcement, thickening and thixotropy, and is known as "Industrial monosodium glutamate" is a nanomaterial used in industrial applications worldwide. At present, there are mainly two methods for preparing silica: precipitation method and gas phase method. [0003] The precipitation method is a chemical reaction between sodium silicate (that is, water glass) and acid (in most cases, sulfuric acid) to generate silicic acid, and then filter, beat, and dry to obtain white carbon black. The by-products are sodium sulfate and water. The specific process is to prepare water glass solution first, and then...

Claims

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Application Information

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IPC IPC(8): C01B33/12
Inventor 周俊虎杨卫娟张彦威刘建忠周志军王智化黄镇宇程军岑可法
Owner ZHEJIANG UNIV
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