Method for preparing biodiesel through catalysis of natural biomass solid acid catalyst

A solid acid catalyst, biodiesel technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, etc., can solve the problem of carbon-based material volume, weight reduction, mechanical strength Reduce and waste organic matter, etc., to achieve the effect of low price, suitable particle size, and good recycling

Inactive Publication Date: 2013-03-13
WEIFANG JIN XIN DA BIO CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned preparation method wastes most of the organic matter in the natural biomass. The carbonized carbon-based material not only reduces the volume and weight significantly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] Embodiment: a kind of method that natural biomass solid acid catalyst catalysis prepares biodiesel can have following multiple embodiments:

[0037] 1. The specific steps are:

[0038] ①Immerse 10kg of washed, dried and pulverized sawdust particles in a sulfuric acid solution with a mass fraction of 15% for 1.5h, and dry at 80°C after taking it out;

[0039] ② Soak the acidified sawdust in 0.01mol / L potassium chloride solution for 1 hour, take it out and dry it at 80°C;

[0040] ③ Place the wood chips loaded with potassium chloride in a muffle furnace at 100°C to activate for 2 hours, and cool naturally to room temperature to obtain a natural wood chip solid acid catalyst;

[0041]④Put 3kg of the prepared solid acid catalyst, 11kg of methanol and 100kg of waste oil that has undergone pre-dehydration and de-impurity treatment into a batch reactor, stir and heat to 60°C, and carry out esterification and transesterification reactions. The reaction time is 2h, and the ...

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PUM

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Abstract

The invention provides a method for preparing biodiesel through catalysis of a natural biomass solid acid catalyst. The method comprises the following steps: 1, washing, drying and crushing the natural biomass, weighing and impregnating the crushed biomass, and taking out and drying the biomass; 2, impregnating acidified biomass in a metal salt solution, taking out and drying; 3, placing the biomass loaded with metal salt in a muffle furnace for roasting to obtain a natural biomass solid acid catalyst; and 4, adding the prepared biomass solid acid catalyst, short chain alcohol and oil into a batch reactor for esterification and an ester exchange reaction; after the reaction, conducting reduced pressure distillation to remove excessive short chain alcohol; and standing to delaminate glycerol and biodiesel produced in the reaction, wherein the biodiesel product is on an upper layer. According to the invention, natural renewable biomass is used as a raw material for direct acidification, without carbonization, so as to realize low cost and high biological diesel oil yield; besides, the prepared catalyst has advantages of good mechanical strength, particle size conducive to recovery, and no secondary pollution.

Description

technical field [0001] The invention relates to biodiesel, in particular to a method for preparing biodiesel by catalyzing a solid acid catalyst using natural biomass as a raw material. Background technique [0002] Biodiesel is recycled oil. In recent years, with the depletion of petroleum resources and the gradual deterioration of the environment, biodiesel, a renewable resource, has been paid more and more attention. It has gradually been widely accepted as a substitute for high-quality, low-sulfur, low-toxic petrochemical diesel. At present, the catalyst used in the process of biodiesel production is initially acid solution catalysis, such as concentrated sulfuric acid, but its product is difficult to separate from the catalyst, which seriously corrodes the reaction equipment, has many side reactions, and causes great environmental pollution. Later, the introduction of solid acid-base catalysts solved the problem of difficult separation of catalysts and products, but t...

Claims

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Application Information

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IPC IPC(8): C11C3/10C10L1/02B01J27/10B01J27/18B01J31/30B01J27/053B01J27/06B01J27/138
CPCY02E50/13Y02E50/10
Inventor 唐鹤生宫述亮李文章贾运千孙立政张倩倩孙鹏云袁芳
Owner WEIFANG JIN XIN DA BIO CHEM
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