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Method for recycling waste FCC (fluid catalytic cracking) catalyst

A waste catalyst and catalyst technology, applied in chemical instruments and methods, removal of solid waste, chemical processing of tar asphalt/petroleum asphalt/natural asphalt, etc., can solve problems such as application limitations, improve compatibility, improve The effect of high temperature stability

Inactive Publication Date: 2015-04-01
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Gerber et al. also mentioned in the report on the regeneration of hydrogenation spent catalysts and FCC spent catalysts that FCC spent catalysts can be used on road bases or as fillers, but the metals in the spent catalysts have certain restrictions on its application

Method used

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  • Method for recycling waste FCC (fluid catalytic cracking) catalyst

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Embodiment 1

[0019] The method of recycling waste FCC catalyst, the specific method is as follows: use a vibrating sieve to screen the waste FCC catalyst, wherein, the particle size greater than 40 μm is used as fine aggregate or filler in the asphalt mixture; the particle size is less than 40 μm The waste agent is used to modify asphalt.

[0020] On the basis of the above scheme, the method for modifying asphalt with the spent FCC catalyst with a particle size of less than 40 μm is as follows:

[0021] (1) Place the spent FCC catalyst with a particle size of less than 40 μm in an oven at 120° C. for heating and drying, and then place it in a desiccator to cool to room temperature for use;

[0022] (2) Weigh 200 g of the dried spent FCC catalyst and place it in a three-necked flask, and place it in a water bath to control the temperature at 20°C, weigh 1 g of sodium methyl silicate, and stir the two together for 10 minutes;

[0023] (3) Weigh 500g of No. AH-70 asphalt and place it in the ...

Embodiment 2

[0025] The method for modifying asphalt by using the waste agent with a particle size less than 40 μm is as follows:

[0026] (1) heating and drying the spent FCC catalyst with a particle size of less than 40 μm in an oven at 120° C.;

[0027] (2) Weigh 200g of the dried waste FCC catalyst and place it in a three-necked flask, and place it in an oil bath to control the temperature at 100°C, weigh 10g of sodium methyl silicate, and stir the two together for 30 minutes ;

[0028] (3) Weigh 500g of AH-70 asphalt and put it in the sample barrel, then place it in a heating mantle and raise the temperature to 150°C, slowly add 100g of spent catalyst treated with sodium methyl silicate into the asphalt, and perform shear mixing , with a rotational speed of 10,000 rpm and a shear of 60 min to prepare spent catalyst-modified asphalt, and test its penetration, softening point, ductility, brittle point, anti-aging and compatibility indicators.

Embodiment 3

[0030] The method for modifying asphalt by using the waste agent with a particle size less than 40 μm is as follows:

[0031] (1) heating and drying the spent FCC catalyst with a particle size of less than 40 μm in an oven at 120° C.;

[0032] (2) Weigh 200 g of the dried waste FCC catalyst and place it in a three-necked flask, and place it in a water bath to control the temperature at 70°C, weigh 5 g of sodium methyl silicate, and stir the two together for 20 minutes;

[0033] (3) Weigh 500g of No. AH-70 asphalt and place it in the sample barrel, then put it in a heating mantle and raise the temperature to 135°C, slowly add 75g of the spent catalyst treated with sodium methyl silicate into the asphalt, and perform shear mixing , rotating at 7000 rpm, shearing for 30 minutes, prepared spent catalyst modified asphalt, and tested its penetration, softening point, ductility, brittle point, anti-aging and compatibility indicators.

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Abstract

The invention relates to a method for recycling a waste FCC (fluid catalytic cracking) catalyst. The specific method is as follows: screening the waste FCC catalyst, wherein the waste FCC catalyst with the particle size of more than 40 mu m is used as a fine aggregate or filler in an asphalt mixture, and the waste FCC catalyst with the particle size of less than 40 mu m is used for modifying asphalt. The method provided by the invention has the beneficial effects that 1) the waste FCC catalyst with the particle size of less than 40 mu m is used for preparing the modified asphalt, and the waste FCC catalyst with the large particle size is used as the filler or a coarse aggregate, thereby realizing maximum utilization of the waste FCC catalyst; and 2) after surface treatment of the waste FCC catalyst, the compatibility with the asphalt is improved, and the high-temperature stability, low-temperature anti-cracking property, and the like of the ordinary asphalt material are significantly improved.

Description

technical field [0001] The invention relates to the technical field of recycling waste chemical raw materials, in particular to a method for recycling waste FCC catalysts. Background technique [0002] As crude oil becomes increasingly heavy and inferior, the total content of metal pollutants, asphaltenes and colloids, and heteroatom compounds such as sulfur and nitrogen increases, and fluid catalytic cracking (FCC, Fluid Catalytic Cracking) has become the most important heavy One of the processes of lightening oil. In the FCC process, the catalyst plays an important role. For the FCC unit, except for the natural running loss of the consumed catalyst, the rest is due to the deactivation of heavy metal pollution, carbon deposition and hydrothermal deactivation during use, the catalyst reaction selectivity becomes poor, and the proper activity and performance cannot be maintained. Reaction selectivity, the spent catalyst that must be unloaded periodically. At present, there...

Claims

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Application Information

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IPC IPC(8): C10C3/02B09B3/00
CPCC10C3/005B09B3/40
Inventor 魏建明赵文喆王筵铸李亚楠董夫强张玉贞
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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