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A kind of preparation method of biodiesel synthesis solid base catalyst

A solid base catalyst, biodiesel technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of non-reusable liquid catalysts, environmental hazards, waste Liquid discharge and other problems, to achieve the effect of high reactivity and stability, low production cost, and simple production process

Active Publication Date: 2020-07-28
温州盘虎新能源有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional preparation method of biodiesel is to use liquid catalyst to prepare by esterification reaction, but the liquid catalyst cannot be reused and a certain amount of waste liquid is discharged during the production process. Researchers separately study solid catalysts for biodiesel synthesis
In addition, depending on the source of oil, biodiesel contains a certain amount of nitrogen, which will also cause certain harm to the environment during the combustion process. At present, hydrogenation technology and organic acid neutralization technology are mainly used to remove organic nitrogen in biodiesel. Nitrogen, and these technologies not only consume energy but also need to recover additional organic acids during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) First prepare a 5wt% dilute nitric acid solution, then immerse the halloysite into the above solution to prepare a 40g / L mixed solution, transfer it to a water bath and treat at 80°C for 6h, filter and wash with deionized water , and dried at 110 °C for 12 h, and then treated in an air atmosphere of 800 °C for 5 h to obtain purified halloysite nanotubes;

[0021] 2) After the anthracite powder, purified halloysite nanotubes, cerium nitrate, and calcium nitrate are batched in a weight ratio of 2:1:0.2:0.06, they are transferred to a ball mill, and a star ball mill is used at a rotating speed of 1000rpm. After treatment for 8h, the obtained powder was treated at 800°C for 18h under nitrogen atmosphere to obtain an intermediate product with basicity;

[0022] 3) The obtained intermediate product was immersed in 25wt% ammonia water and configured into a mixed solution of 100g / L, then transferred to an autoclave at 320° C. and treated under 10MP conditions for 120min, and...

Embodiment 2

[0027] 1) First prepare a 3wt% dilute nitric acid solution, then immerse the halloysite into the above solution to prepare a mixed solution of 80g / L, transfer it to a water bath and treat at 60°C for 12h, filter and wash with deionized water , and dried at 110 °C for 12 h, and then treated in an air atmosphere of 800 °C for 5 h to obtain purified halloysite nanotubes;

[0028] 2) After the anthracite powder, purified halloysite nanotubes, cerium sulfate, and sodium nitrate are batched in a weight ratio of 2:1:0.1:0.03, they are transferred to a ball mill, and a star ball mill is used at a rotating speed of 1000rpm. After treatment for 6h, the obtained powder was treated at 800°C for 10h under nitrogen atmosphere to obtain an intermediate product with basicity;

[0029] 3) The obtained intermediate product was immersed in 25wt% ammonia water and configured into a mixed solution of 300g / L, then transferred to an autoclave at 320° C. and treated under 10MP conditions for 120min, ...

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PUM

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Abstract

The invention discloses a biodiesel synthesis solid base catalyst preparation method which comprises the following steps: step 1, purifying halloysite nanotubes; step 2, preparing an intermediate product; step 3, preparing a catalyst. According to the preparation method disclosed by the invention, the halloysite nanotubes, pulverized coal, cerium nitrate and alkali powder are ground and treated under high temperature and then are treated by supercritical ammonium hydroxide to obtain the final catalyst; a yield of a product of the catalyst in esterification reaction between soybean oil and methyl alcohol can reach 99.5% or more; after being utilized repeatedly 50 times, activity of the catalyst can still keep 96% or more. Meanwhile, when the catalyst is applied to biodiesel containing nitrogen, nitrogen content removal in the biodiesel can be 95% or more.

Description

technical field [0001] The invention belongs to the technical field of catalysts, in particular to a preparation method of a solid base catalyst for biodiesel synthesis. Background technique [0002] At present, my country's energy mainly relies on fossil energy such as coal, oil, and natural gas. On the one hand, fossil fuels are non-renewable, and on the other hand, fossil fuels will generate a large amount of CO during the combustion process. 2 ,NO x ,SO x and other waste gas, causing great pollution to the environment. Biodiesel is an important biofuel to replace petrochemical diesel. It has the advantages of raw material renewability, convenient transportation and storage, superior combustion performance, no sulfur and no aromatic emissions. [0003] The traditional preparation method of biodiesel is to use a liquid catalyst to prepare it through an esterification reaction, but the liquid catalyst cannot be reused and a certain amount of waste liquid is discharged du...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/10C11C3/04C11C3/10C11B3/02C10L1/02
CPCB01J23/10C10L1/02C11B3/02C11C3/04C11C3/10Y02E50/10
Inventor 史荣会李静玲袁彬涵丁翠翠李玉岐王哲胡慧琳吴淑梅陈杰
Owner 温州盘虎新能源有限公司
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