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Base catalyst for preparing biodiesel

A biodiesel, alkali catalyst technology, applied in physical/chemical process catalysts, heterogeneous catalyst chemical elements, metal/metal oxide/metal hydroxide catalysts, etc. The process is complicated and other problems, to achieve the effect of good oil quality, high oil production rate and significant economic benefits

Active Publication Date: 2017-01-25
厦门兴重环保化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The process of preparing biodiesel from bio-oil is complex and requires a catalyst to make the reaction faster and better. Traditionally, liquid alkali catalysts are mostly used
However, the liquid alkali-catalyzed biodiesel synthesis process has disadvantages such as strict requirements on raw materials, complicated post-treatment process, polluting the environment, and the catalyst cannot be reused.
However, the general solid base catalyst also has disadvantages such as low use efficiency, poor binding firmness of the loaded active components, easy dissolution, uneven distribution, etc.

Method used

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  • Base catalyst for preparing biodiesel

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preparation example Construction

[0021] The alkali catalyst for preparing biodiesel according to the present invention is composed of a carrier and a first load and a second load loaded on the carrier, and the carrier is modified. The purpose of the modification is that when the catalyst particles are large, The contact surface with the reactants is small, and the catalytic effect is not good. When the catalyst particles are treated to be very small, reaching the micron level, they are easy to agglomerate and form large particles during use; Modification to avoid agglomeration; therefore, modification treatment is required.

[0022] The carrier is activated carbon powder, shell powder, aluminum oxide Al 2 o 3 Or zinc oxide ZnO powder; and the carrier has been modified; the modified method of the carrier is: dry the carrier in an oven at 35-90 ° C, after cooling, weigh the carrier and put it into a stirring device and temperature In the 500mL three-necked flask of the controller, dissolve the weighed couplin...

Embodiment 1

[0027] Select shell powder (1-100um, average particle size 50um) and dry it in an oven at 70°C. After cooling, weigh 20g and put it into a 500mL three-necked flask equipped with a stirring device and a temperature controller, add 0.108g of silane coupling agent, 0.192g of titanate coupling agent, each 0.002mol, dissolve in 300mL of liquid paraffin oil , and then pour it into a three-necked flask, and when the temperature rises to 105°C, stir at a high speed for 20 min at a speed of 500 r / min. After the reaction is finished, filter with suction, dry, grind, and set aside.

[0028] Dissolve 2g of potassium hydroxide and 3g of magnesium nitrate in water, the amount of solvent is 1L, take 15g of modified powdered shell powder, stir in the solution, and soak for 10h. Then place it in a water bath at 60°C for 1 hour with stirring and immersion, then evaporate the water to dryness, and dry it in an oven at 100°C for 3 hours. After drying, it is cooled and placed in a muffle furnace...

Embodiment 2

[0034] Choose powdered zinc oxide and dry it in an oven at 35°C. After cooling, weigh 120 micropowder and put it into a 500mL three-necked flask equipped with a stirring device and a temperature controller, dissolve 0.0015mol each of zirconium coupling agent and silane coupling agent in 300mL liquid paraffin oil, and then pour it into a three-necked flask In the flask, when the temperature rises to 100°C, stir at high speed for 20 min at 430 r / min. After the reaction is finished, filter with suction, dry, grind, and set aside.

[0035] Dissolve 5g of calcium acetate and 4g of barium acetate in water, the amount of solvent is 1L, take 15g of modified zinc oxide powder, put it into the solution, stir, and immerse for 10h. Then place it in a water bath at 60°C for 1 hour with stirring and immersion, then evaporate the water to dryness, and dry it in an oven at 120°C for 3 hours. After drying, it is cooled and placed in a muffle furnace. Slowly raise the temperature, control th...

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Abstract

The invention discloses a base catalyst for preparing biodiesel. The base catalyst is composed of a carrier and a load substance loaded on the carrier and is characterized in that activated carbon powder, shell powder, Al2O3 or ZnO powder is taken as the carrier; the carrier is modified; and the load substance comprises a first load substance and a second load substance. The base catalyst for preparing biodiesel, disclosed by the invention, is used for preparing biodiesel, has high biodiesel yield and good biodiesel quality, can be recycled, and has obvious economic benefits.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to an alkali catalyst for preparing biodiesel. Background technique [0002] Biodiesel is a kind of fatty acid methyl ester substance obtained by transesterification with short-chain alcohols with animal and vegetable oils as the main raw material. It has a high cetane number, does not contain sulfur and aromatic compounds, is biodegradable, non-toxic, flash Compared with mineralized diesel oil, it is a new type of environment-friendly energy. Replacing petrochemical diesel with biodiesel has great potential and a broad market prospect. In recent years, it has become a research hotspot all over the world. At present, a factor restricting the development of biodiesel is the high cost of oil crops, which accounts for about 75% of the total cost of biodiesel production. Recycling waste catering oil to produce biodiesel can reduce production costs and improve economic benefits, and it is ver...

Claims

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Application Information

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IPC IPC(8): B01J23/04B01J23/06C10G3/00
CPCB01J23/002B01J23/04B01J23/06B01J2523/00C10G3/48C10G2400/04B01J2523/23B01J2523/25B01J2523/27B01J2523/12B01J2523/13B01J2523/31Y02E50/10Y02P30/20
Inventor 戴景明
Owner 厦门兴重环保化工有限公司
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