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Load type flyash solid base catalyst for producing biological diesel oil and method of producing the same

A solid base catalyst, biodiesel technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., to reduce work costs and environmental costs, easy to separate , The effect of simplifying the post-processing process

Inactive Publication Date: 2008-02-27
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] According to the applicant's research proof, the relevant fly ash is used as a catalyst with its unique performance to overcome the solid alkali catalyst's susceptibility to H 2 O and CO 2 The disadvantage of poisoning, there is no deactivation phenomenon like solid strong acid catalyst due to coking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Weigh 2.00 g of sodium hydroxide, pour it into a beaker, and dissolve it in 100 mL of deionized water to obtain a sodium hydroxide solution. Weigh 8.00g of the fly ash carrier that has been activated at 550°C for 2h and immerse it in the aqueous solution of sodium hydroxide. After stirring and aging for 2.0h, heat and dry the solvent, and put the obtained poly powder in the muffle furnace at 230°C Calcined for 3.0 hours, cooled and ground into a powder of less than 100 mesh to obtain a solid base catalyst.

[0037] Put 1 mol of deacidified and dehydrated rapeseed oil and 10 mol of methanol into a 1.5-liter reactor with reflux condensation and mechanical stirring device, add 5.0% of the above catalyst, and stir and reflux at 65°C for 80 minutes. Evaporate excess methanol, filter the reaction solution while it is hot, separate the catalyst, and then centrifuge the filtrate to separate layers. The upper layer is biodiesel, and the lower layer is the by-product glycerol. Af...

Embodiment 2

[0039] Weigh 1.50 g of potassium hydroxide, pour it into a beaker, and dissolve it in 100 mL of deionized water to obtain a potassium hydroxide solution. Weigh 8.50g of fly ash carrier that has been activated at 550°C for 2h and immerse it in an aqueous solution of potassium hydroxide. After stirring and aging for 2.0h, heat and dry the solvent, and place the obtained polypowder in a muffle furnace at 258°C Calcined for 3 hours, cooled and ground into a powder of less than 100 meshes to obtain a solid base catalyst.

[0040] Put 1 mol of wax gourd oil and 10 mol of methanol into a 1.5-liter reactor with reflux condensation and mechanical stirring device, add 3.5% of the above-mentioned catalyst, and stir and reflux at 62°C for 90 minutes. Evaporate excess methanol, filter the reaction solution while it is hot, separate the catalyst, and then centrifuge the filtrate to separate layers. The upper layer is biodiesel, and the lower layer is glycerin, a by-product. After chromatogr...

Embodiment 3

[0042] Weigh 4.00 g of lithium hydroxide, pour it into a beaker, and dissolve it in 100 mL of deionized water to obtain a lithium hydroxide solution. Weigh 6.00g of fly ash carrier that has been activated at 550°C for 2h and immerse it in an aqueous solution of lithium hydroxide. After stirring and aging for 2.0h, heat and dry the solvent, and place the obtained poly powder in a muffle furnace at 270°C Calcined for 3 hours, cooled and ground into a powder of less than 100 meshes to obtain a solid base catalyst.

[0043] Put 1 mol of Camellia oleifera seed oil and 15 mol of methanol into a 1.5-liter reactor equipped with reflux condensation and mechanical stirring device, add 3.2% of the above-mentioned catalyst, and stir and reflux at 63°C for 100 minutes. Evaporate excess methanol, filter the reaction solution while it is hot, separate the catalyst, and then centrifuge the filtrate to separate layers. The upper layer is biodiesel, and the lower layer is glycerol, a by-product...

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PUM

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Abstract

The invention discloses a solid alkaline catalyst of loaded coal ash to make biological diesel, which comprises the following parts: coal ash + alkaline metal hydroxide, coal ash + alkaline earth metal hydroxide, coal ash + alkaline metal salt, coal ash + alkaline earth metal salt, coal ash + alkaline metal hydroxide + alkaline metal salt, coal ash + alkaline metal hydroxide + alkaline metal salt and alkaline metal in the composite system, wherein the total weight of alkaline metal hydroxide, alkaline earth metal hydroxide, alkaline metal salt, alkaline metal salt and alkaline metal is 10-40%; the total weight of coal ash is 60-90%; the catalyst can accelerate the ester exchange reaction effectively under mild reacting condition. The invention has simple technique, low cost to immerse the activated coal ash carrier in the alkaline or salt solution or suspension, which is sintered after aging and adding drying solvent in the mafu stove to generate polymer powder to be grinded and sieved to prepare.

Description

technical field [0001] The invention relates to a catalyst, in particular to a loaded fly ash solid base catalyst for preparing biodiesel by catalyzing fatty acid glyceride and methanol for transesterification at the boiling point of methanol and a preparation method. Background technique [0002] Biodiesel has attracted widespread attention and research due to its rich raw material sources, good renewability and environmental protection advantages. Its combustion performance is not inferior to petrochemical diesel, and it can be directly used in diesel engines. It is considered a petrochemical Alternatives to diesel. Biodiesel is fatty acid methyl ester, which is obtained by transesterification of renewable oils and short-chain alcohols (usually methanol or ethanol). It is a clean and renewable energy that can replace petrochemical diesel. Its raw materials are rich in sources, which can be any natural oil (or fat), such as vegetable oil (soybean oil, corn oil, rapeseed oi...

Claims

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Application Information

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IPC IPC(8): B01J23/02B01J21/18B01J21/16C10G3/00
CPCY02E50/13Y02E50/10Y02P30/20
Inventor 张增强高锦明孙楠张鞍灵王栩杨胜祥
Owner NORTHWEST A & F UNIV
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