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Catalyst for producing fuel oil by catalytically cracking waste plastics and preparation method thereof

A catalytic cracking, catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of low efficiency of plastic decomposition, lack of catalyst, selectivity It can achieve the effect of small loss of transition metal, high catalytic efficiency and high decomposition efficiency.

Active Publication Date: 2021-01-05
GUANGDONG PROVINCIAL ACADEMY OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the efficiency of plastic decomposition is not high, the selectivity is not good, and the processing is more cumbersome
[0005] In summary, the prior art still lacks a catalyst that can process various waste plastics and obtain fuel oil with high efficiency.

Method used

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  • Catalyst for producing fuel oil by catalytically cracking waste plastics and preparation method thereof
  • Catalyst for producing fuel oil by catalytically cracking waste plastics and preparation method thereof
  • Catalyst for producing fuel oil by catalytically cracking waste plastics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: Titanium-based catalyst (Ti)

[0037](1) Pretreatment: Grind 10g of the clay raw material to an average size of no more than 30 meshes, and select bentonite from Sigma-Aldrich (USA) as the raw material of the clay structure;

[0038] (2) Preparation of homogeneous clay suspension: the clay obtained in step (1) is mixed with deionized water under stirring to prepare homogeneous clay suspension;

[0039] (3) Preparation of intercalation solution: mix 0.1mol / L sodium hydroxide alkaline solution as an activator with 2g titanium chloride, control the pH of the mixed solution to 4, and age the solution at a specific temperature for 4h after mixing Achieve balance;

[0040] (4) Intercalation: Under stirring conditions, the intercalation solution prepared in step (3) is added dropwise to the homogeneous clay suspension obtained in step (2), the dropping temperature is controlled at 80°C, and the dropping time is controlled at 15 hours;

[0041] (5) Aging and wa...

Embodiment 2

[0045] Embodiment 2: zirconium-based catalyst (Zr)

[0046] (1) Pretreatment: Grind 10g of the clay raw material to an average size of no more than 30 meshes, and select bentonite from Sigma-Aldrich (USA) as the raw material of the clay structure;

[0047] (2) Preparation of homogeneous clay suspension: the clay obtained in step (1) is mixed with deionized water under stirring to prepare homogeneous clay suspension;

[0048] (3) Preparation of intercalation solution: 0.1mol / L sodium hydroxide alkaline solution is mixed with 2g zirconium chloride as an activator, the pH of the mixed solution is controlled to be 4, after mixing, the solution is aged at a specific temperature for a period of time time to balance;

[0049] (4) Intercalation: adding the intercalation solution prepared in step (3) dropwise to the homogeneous clay suspension obtained in step (2), the dropping temperature is controlled at 80°C, and the dropping time is controlled at 15 hours;

[0050] (5) Aging and ...

Embodiment 3

[0054] Embodiment 3: Iron-based catalyst (Fe)

[0055] (1) Pretreatment: Grind 10g of the clay raw material to an average size of no more than 30 meshes, and select bentonite from Sigma-Aldrich (USA) as the raw material of the clay structure;

[0056] (2) Preparation of homogeneous clay suspension: the clay obtained in step (1) is mixed with deionized water under stirring to prepare homogeneous clay suspension;

[0057] (3) Preparation of intercalation solution: 0.1mol / L sodium hydroxide alkaline solution is mixed with 4g ferric chloride hexahydrate as an activator, the pH of the mixed solution is controlled to be 4, after mixing, the solution is kept at a specific temperature Aging for a period of time to reach equilibrium;

[0058] (4) Intercalation: adding the intercalation solution prepared in step (3) dropwise to the homogeneous clay suspension obtained in step (2), the dropping temperature is controlled at 80°C, and the dropping time is controlled at 15 hours;

[0059]...

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Abstract

The invention discloses a catalyst for producing fuel oil through catalytic cracking of waste plastic. The catalyst comprises modified pillared clay and a metal catalyst supported by the modified pillared clay, wherein the modified pillared clay is made of montmorillonite or kaolin; the metal catalyst comprises a transition metal compound and a non-transition metal compound with a catalysis function; the weight percentage of the transition metal compound accounts for 95% or greater of the weight of the metal catalyst. The catalyst disclosed by the invention has an appropriate acidity and goodproperties, is high in decomposition efficiency, has high selectivity for diesel oil fuel production and does not need to be sorted before pyrolysis, and the labor cost and the operation cost of related equipment are reduced; the catalyst can be applied to catalytic pyrolysis of mixed plastic raw materials and hydrocarbon materials, and is applicable to various pyrolysis reactors such as a fluidized bed reactor, a tubular reactor, a rotary kiln reactor, a stirring kettle reactor and a spiral conveyer.

Description

technical field [0001] The invention relates to a method for recycling resources by using waste, in particular to a catalyst for catalytically cracking waste plastics to produce fuel oil and a preparation method thereof. Background technique [0002] Plastic is a polymer material with a wide range of uses. China has become the world's largest consumer of plastic since 2011, and a large amount of waste plastic has caused increasingly serious "white pollution", which has brought a lot of pressure to my country's environmental protection. . For waste plastics, the traditional treatment and disposal methods include landfill, incineration, recycling, recycling, and replacing existing plastics with degradable plastics. With the increase in the amount of waste plastics and the increasingly stringent environmental protection management, Landfill and incineration treatment are restricted or even resisted. Therefore, using waste plastics to produce liquid fuel is a better treatment met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/02B01J23/78B01J23/06B01J23/80C10G1/00
CPCB01J23/02B01J23/06B01J23/78B01J23/80C10G1/00C10G2300/1003
Inventor 王中慧卢欢亮汪永红李朝晖
Owner GUANGDONG PROVINCIAL ACADEMY OF ENVIRONMENTAL SCI
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