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Catalyst for waste plastic microwave pyrolysis and preparation method thereof

A technology for cracking catalysts and waste plastics, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, and the preparation of liquid hydrocarbon mixtures. Clear, high yield effect

Inactive Publication Date: 2013-08-21
王文平 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Aiming at the shortcomings of existing microwave cracking catalysts for waste plastics such as single function, low oil yield and easy coking, the object of the present invention is to provide a catalyst that simultaneously has the three functions of absorbing microwaves, catalytic cracking, and inhibiting coking. A Catalyst for Microwave Cracking of Waste Plastics

Method used

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  • Catalyst for waste plastic microwave pyrolysis and preparation method thereof
  • Catalyst for waste plastic microwave pyrolysis and preparation method thereof
  • Catalyst for waste plastic microwave pyrolysis and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Catalyst preparation:

[0041] (1) Mix 50.0 g of 10-mesh activated carbon with 49.9 g of 10-mesh γ-Al 2 o 3 Add it into the mixer, and keep stirring for 1 h to obtain material 1;

[0042] (2) 0.1 g of potassium acetate is dissolved in 10 g of water to obtain solution 1;

[0043] (3) During the stirring process, spray the solution 1 obtained in step (2) onto the material 1 obtained in step (1) to obtain material 2;

[0044] (4) Material 2 was vacuum-dried at 100 °C for 2 h, and the microwave cracking catalyst was obtained after removing water. The composition of the catalyst is shown in Table 1.

[0045] Microwave cracking reaction:

[0046] Weigh 10.0 g of the catalyst of this embodiment and 100 g of waste polyethylene (PE), mix them uniformly and carry out microwave cracking reaction, the frequency of microwave is 2450 MHz, the equilibrium temperature that can be reached in the reaction process is 315 ° C, the microwave cracking product The yield and cokin...

Embodiment 2

[0048] Catalyst preparation:

[0049] (1) Add 90.0 g of 800-mesh coke and 9.0 g of 800-mesh amorphous aluminum silicate into the mixer, and keep stirring for 1 h to obtain material 1;

[0050] (2) 1.0 g of sodium acetate is dissolved in 10 g of water to obtain solution 1;

[0051] (3) During the stirring process, spray the solution 1 obtained in step (2) onto the material 1 obtained in step (1) to obtain material 2;

[0052] (4) Material 2 was vacuum-dried at 100 °C for 2 h, and the microwave cracking catalyst was obtained after removing water. The composition of the catalyst is shown in Table 1.

[0053] Microwave cracking reaction:

[0054] Weigh 1.0 g of the catalyst of this embodiment and 100 g of waste polypropylene (PP), mix them evenly, and carry out microwave cracking reaction. The frequency of microwave is 2450 MHz, and the equilibrium temperature that can be achieved in the reaction process is 408 ° C. The microwave cracking product The yield and coking si...

Embodiment 3

[0056] Catalyst preparation:

[0057] (1) Add 80.0 g of 500-mesh coal and 19.5 g of 500-mesh fly ash into the mixer, and keep stirring for 1 hour to obtain material 1;

[0058] (2) 0.5 g of potassium carbonate is dissolved in 10 g of water to obtain solution 1;

[0059] (3) During the stirring process, spray the solution 1 obtained in step (2) onto the material 1 obtained in step (1) to obtain material 2;

[0060] (4) Material 2 was vacuum-dried at 100 °C for 2 h, and the microwave cracking catalyst was obtained after removing water. The composition of the catalyst is shown in Table 1.

[0061] Microwave cracking reaction:

[0062] Weigh 5.0 g of the catalyst of this embodiment and 100 g of waste polystyrene (PS), mix them uniformly, and carry out microwave cracking reaction. The frequency of microwave is 915 MHz, and the equilibrium temperature that can be achieved in the reaction process is 600 ° C. The microwave cracking product The yield and coking situation are...

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Abstract

The invention discloses a catalyst for waste plastic microwave pyrolysis and a preparation method thereof. The catalyst comprises the following components by mass percent: 50.0-90.0% of a microwave absorption component, 9.0-49.9% of a catalytic cracking component, and 0.1-1.0% of a coking inhibiting component. The invention also discloses the preparation method of the catalyst. Compared with the prior art, the catalyst has the advantages that firstly, the catalyst has multiple functions, can effectively convert the microwave electromagnetic energy into heat, provides necessary energy for waste plastic pyrolysis and catalytic cracking, and can reach high equilibrium temperature in action; secondly, the yield of liquid pyrolysis oil is high, no coke is generated in the pyrolysis or the coke is loose and is easy to clear away; and thirdly, the preparation method of the catalyst is simple and is applicable to industrial production.

Description

Technical field [0001] The invention involves a catalyst in the environmental protection field, especially a catalyst and preparation method for abandoning plastic microwave cracking. Background technique [0002] With the booming development of the plastic industry and its large -scale use, waste plastic products and plastic waste bring serious social problems -energy waste and pollution environment.From the perspective of the chemical composition of waste plastic: the following: polyethylene (including low -density polyethylene (LDPE), linear low -density polyethylene (LLDPE), high -density polyethylene (HDPE)), polypropylene (PP), polypropylene (PP), PP)Polyvinyl chloride (PVC), polystyrene (PS), and polyzed phenyl acetate (PET), these types of waste plastic account for more than 70%of all types of waste plastics. [0003] The traditional treatment method of waste plastic is to use the method of incineration or landfilling, which will undoubtedly cause severe secondary polluti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/04B01J29/84B01J29/06B01J29/08B01J31/02B01J29/70B01J29/24B01J31/26B01J31/28B01J31/38B01J31/06B01J29/14B01J27/18C10G1/00
Inventor 王文平王继元孙革
Owner 王文平
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