Method for producing white carbon black with fcc waste catalyst as raw material

A waste catalyst and white carbon black technology, applied in the direction of silicon oxide, silicon dioxide, chemical recovery, etc., can solve the problems of poor separation effect and high cost of electromagnetic equipment, and achieve the effects of cost reduction, low production cost and simple process

Inactive Publication Date: 2011-12-14
DALIAN JIAOTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method only improves the use efficiency of the catalyst. At the same time, this technology also has disadvantages such as high cost of electromagnetic equipment and poor separation effect.

Method used

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  • Method for producing white carbon black with fcc waste catalyst as raw material
  • Method for producing white carbon black with fcc waste catalyst as raw material

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Experimental program
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Effect test

Embodiment 1

[0020] The spent FCC catalyst with a silicon dioxide content of 47.1% was used as a raw material, and the additive anhydrous sodium carbonate was added in a ratio of 1:1, and mechanically activated and reactively ground by a high-energy ball mill for 5 minutes. Calcined 30.0021g of the activated material at 700°C to obtain 23.2968g of the product, with a weight loss of about 22.35% after calcination; then took out 15g of the product and extracted it with water, the mass solid-liquid ratio was 1:5, the extraction time was 2 hours, and then filtered. The filtrate was gelled in a water bath at 70°C for 3 hours, washed three times, dried at 105°C for 3 hours, and crushed to obtain a white carbon black product. The XRD pattern of the product is attached figure 1 , indicating that the product is an amorphous structure. After testing, its main performance indicators are: silica content 98.6%, specific surface area about 250m 2 / g, DBP oil absorption value 220ml / 100g, PH about 6.5,...

Embodiment 2

[0022] The spent FCC catalyst with a silicon dioxide content of 47.1% was used as a raw material, and the additive anhydrous sodium carbonate was added in a ratio of 1:1, and the activation reaction was carried out by a high-energy ball mill for 5 minutes. The activated material was calcined at 750°C; then 15g was taken out and leached with water for 3h, and then filtered. The filtrate was gelled in a water bath at 70°C for 2 hours, washed 5 times, dried at 105°C for 3 hours, and crushed to obtain a white carbon black product. After testing, its main performance indicators are: silica content 99.0%, specific surface area about 300m 2 / g, DBP oil absorption value 230ml / 100g, PH about 6.5, loss on drying (110°C, 2h) 7%, loss on ignition (900°C, 2h) 9%, all in line with the relevant national standards for precipitated silica .

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Abstract

The invention relates to a method for producing white carbon black by using FCC waste catalyst as raw material. The method is to mechanically activate the spent FCC catalyst and add anhydrous sodium carbonate as a roasting aid, and reduce the roasting temperature through mechanochemical reaction. The calcined product is leached and filtered, aged in a water bath to achieve the separation of silicon and aluminum, and finally washed and dried to obtain white carbon black that meets the relevant standards for use. This process combines mechanochemical reaction, low-temperature roasting and wet leaching process, and realizes the goal of producing white carbon black at low cost by using FCC waste catalyst. The outstanding feature of the present invention is that the process is simple, the production cost is low, the comprehensive utilization of waste can be realized, and it can be widely used in the waste catalyst treatment industry produced in the process of lightening heavy oil.

Description

technical field [0001] The invention relates to a method for producing white carbon black, in particular to a method for producing white carbon black by using waste FCC catalyst deactivated and unloaded in the process of lightening heavy oil as a raw material, and belongs to the field of fine chemicals. Background technique [0002] Catalytic cracking (FCC) is the main means of lightening heavy oil. At present, 80% of gasoline in my country comes from catalytic cracking. As crude oil becomes increasingly heavy and inferior, the total content of metal pollutants, polymer asphalt and colloids, and heteroatom compounds such as sulfur and nitrogen increases, and the demand for catalytic cracking catalysts continues to increase. At present, my country's catalytic cracking capacity ranks second in the world, and the annual processing capacity of catalytic cracking has exceeded 10 8 t, the annual consumption of catalytic cracking catalyst is 9×10 4 t above. Except for a small am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12
CPCY02P20/584
Inventor 张俊计吴秀娟武斌高宏
Owner DALIAN JIAOTONG UNIVERSITY
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