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Method for preparing fuel oil catalyst by lightening waste plastic pyrolysed oil and application of fuel oil catalyst

A technology for pyrolysis of oil and waste plastics, used in physical/chemical process catalysts, chemical instruments and methods, catalytic cracking, etc., to achieve the effect of reducing costs

Inactive Publication Date: 2011-03-30
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also patent literature reports for using fly ash as a catalyst to crack waste plastics into fuel oil, mainly mixing fly ash, aluminum chloride, aluminum silicate, and ammonium molybdate to form a catalyst (Zhuo Shoujiang, Plastic cracking catalyst and its preparation method and application 2003.7, CN1570028A) and after the fly ash pickling treatment (Liu Xianxiang. A catalyst for catalytic cracking of waste plastics to fuel oil. 2007.3, CN101024776A) is used for catalytic cracking of waste plastics, and the quality of the fuel oil thus obtained is not high
On the other hand, the cost of catalysts reported in the above patent literature is too high, thus limiting the practical application of catalysts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 50g of fly ash and place it in a 500ml beaker, add 50ml of 2M / L hydrochloric acid, stir for 30 minutes, then filter with suction, then dry in an oven at 120°C for 3 hours to remove moisture; take out the dried fly ash and grind it finely, put Put it into a muffle furnace and roast at 550°C for 2 hours; mix the roasted and activated fly ash with the binder at a mass ratio of 2:1, add an appropriate amount of dilute nitric acid solution to knead and extrude into strips; the formed fly ash naturally After air-drying, it was baked at 550°C for 4 hours in a muffle furnace.

[0024] The molded fly ash was modified by equal volume impregnation method with 3.0% nickel nitrate solution to obtain 1.2% nickel oxide modified fly ash, namely the finished catalyst A.

[0025] Example 2

Embodiment 2

[0027] Example 3

Embodiment 3

[0029] Example 4

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PUM

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Abstract

The invention relates to a method for preparing a fuel oil catalyst by lightening waste plastic pyrolysed oil and the application of the fuel oil catalyst in order to reduce the cost for preparing fuel oil by pyrolysing waste plastic. The method comprises the following steps of: selecting coal ash of which the granularity is more than 200 meshes and adding mixed solution of 2M / L of hydrochloric acid, 2M / L of sulfuric acid, 1M / L of hydrochloric acid and 1M / L of sulfuric acid into the coal ash to treat the coal ash; and modifying a metal oxide by an isometric immersion method to obtain a modified coal ash catalyst, adding the catalyst in a fixed bed used for preparing the fuel oil from the waste plastic pyrolysed oil, and reacting at the temperature of between 400 and 550 DEG C and at the mass airspeed ratio of 1 to 4 hours <-1>, wherein the yield of the fuel oil is over 72 percent and the effect is good.

Description

technical field [0001] The present invention relates to a preparation method and application of a catalyst for producing fuel oil by pyrolysis of waste plastics, and the catalyst is used in the process of pyrolysis of waste plastics as raw material in a fixed-bed reactor to produce fuel oil , with better fuel oil yield and quality. Background technique [0002] Some progress has been made in the use of waste plastics catalytic cracking to prepare fuel oil catalysts. At present, domestic and foreign reports mainly use zeolites (ZSM-5, Y-type, β-type molecular sieves, clinoptilolite, mercerized Zeolite, etc.), SiO 2 -Al 2 o 3 , Clay and transition metal loading type, etc. There are also patent literature reports for using fly ash as a catalyst to crack waste plastics into fuel oil, mainly mixing fly ash, aluminum chloride, aluminum silicate, and ammonium molybdate to form a catalyst (Zhuo Shoujiang, Plastic cracking catalyst and its preparation method and application 200...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/25C10G11/10C10G11/02
Inventor 刘春燕伍艳辉朱志荣
Owner TONGJI UNIV