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Esterification catalyst for preparing biological diesel oil by animal plant lipid and application method

A technology of animal and vegetable oils and esterification reactions, applied in the preparation of liquid hydrocarbon mixtures, biological raw materials, biofuels, etc., can solve the problems of large dosage, catalyst poisoning, complicated post-treatment process, etc., and reduce the temperature of esterification reaction , Esterification reaction time is shortened, and the effect of reducing processing procedures

Inactive Publication Date: 2006-06-28
赵金玉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are mainly two kinds of esterification reactions of fatty acid glycerides: chemical method and enzymatic method. The active enzyme catalyst used in the enzymatic method is sensitive to low-carbon alcohols and glycerol, and catalyst poisoning will occur after contact, so the active enzyme catalyst has not yet been formalized. Applied in the field of biodiesel production
However, the catalyst used in the current chemical method has a low yield of fatty acid methyl ester, and requires a complicated post-treatment process, a large amount of addition, and high production costs for biodiesel.

Method used

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  • Esterification catalyst for preparing biological diesel oil by animal plant lipid and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 Prepare biodiesel with waste oil extracted from catering industry waste as raw material, take the catalyst components according to the following weights and mix them to prepare the esterification reaction catalyst: 2.0 kg of zinc sulfate for component A, 0.5 kg of tetraammonium sulfate copper for component B kg, C component cadmium oxide 0.15kg, aluminum sulfide 0.35kg.

[0030] First add sulfuric acid to the waste oil for acidification, then use pH test paper to detect its pH value is less than 4, then wash with water to remove impurities in the oil, and vacuum dehydrate, the dehydrated oil is added according to the molar ratio of oil: methanol = 1:4 Methanol, and adding different amounts of esterification catalysts to carry out 5 groups of esterification tests under different reaction conditions. Distillation recovers methanol and separates the oil phase from the water phase. The fraction of fatty acid methyl esters obtained by vacuum distillation of the oil...

Embodiment 2

[0035] Example 2 Using pressed rapeseed oil as the raw material for preparing biodiesel, the components and weight ratios of the esterification catalyst are as follows: A component zinc sulfate 1.0kg, aluminum sulfate 0.5kg, B component tetraammine copper sulfate 0.8kg, C component cadmium oxide 0.10kg, aluminum sulfide 0.30kg.

[0036] First add phosphoric acid in rapeseed oil and carry out acidification, make its pH value less than 4, then wash and remove the impurity in the oil, and vacuum dehydration, the oil after dehydration adds methanol by the molar ratio of oil: methanol=1: 4.5, heats up to At 40°C, add an esterification catalyst accounting for 0.3% of the weight ratio of animal and vegetable oils, and continue to heat up to 55-60°C for 3 hours of transesterification; distill and recover methanol and separate the oil phase from the water phase, and the oil phase is subjected to vacuum The fatty acid methyl ester fraction obtained by distillation is biodiesel, the conv...

Embodiment 3

[0039] Example 3 To prepare biodiesel with animal lard as the oil raw material, take the catalyst components according to the following weight ratio and mix them to prepare the esterification reaction catalyst: 1.0 kg of aluminum sulfate for component A, 0.2 kg of tetraammonium sulfate copper for component B kg, component C cadmium oxide 0.10kg, aluminum sulfide 0.20kg.

[0040] First add sulfuric acid to animal lard for acidification, make its pH value less than 2, then wash with water to remove impurities in the oil, and vacuum dehydrate, add methanol to the oil after dehydration according to the molar ratio of oil: methanol = 1:5, and heat up to Add an esterification catalyst accounting for 0.5% by weight of animal and vegetable oils at 40°C, continue to heat up to 55-60°C for 3 hours of transesterification; distill and recover methanol and separate the oil phase from the water phase, and vacuum the oil phase The fatty acid methyl ester fraction obtained by distillation is ...

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Abstract

The invention relates to esterifying reaction catalyst used animal and vegetable grease to manufacture biological diesel oil. It belongs to using anima and vegetable grease to manufacture biological diesel oil technique field. The catalyst includes A, B, and C three components; the A can be one or many of cadmium sulfate, zinc sulphate, or aluminium sulphate; the B is sulfuric acid quadric-ammino combine copper; the C is chromic oxide and aluminium sulfide. The invention also offers the manufacturing method. The esterifying reaction catalyst can effectively control the reaction direction to make the reversible reaction toward producing fatty acid methyl ester to make fatty glyceride esterifying ratio reach above 90%. Compared with the catalyst and application method, the invention can reduce catalyst reaction temperature, shorten catalyst reaction time, reduce end product processing program, and effectively increase biological diesel oil production quality, and reduce the fabrication cost.

Description

technical field [0001] The invention belongs to the technical field of preparing biodiesel from animal and vegetable oils, in particular to a catalyst used for esterification in the process of preparing biodiesel from animal and vegetable oils and a method for preparing biodiesel using the catalyst. Background technique [0002] On the one hand, the long-term and extensive use of fossil energy has reduced the available resources, and on the other hand, it has also brought serious environmental pollution and ecological damage. Since the late 1980s, many countries have begun to adjust their energy policies, put bioenergy in an important position, and formulate corresponding research and development plans. In June 2003, the "International Renewable Energy Conference" pointed out that expanding the supply of renewable energy is an inevitable trend, and the world will accelerate the transition from the era of fossil energy to the era of renewable energy. [0003] Biodiesel is on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00
CPCY02E50/10Y02P30/20
Inventor 赵金玉洪凤坤
Owner 赵金玉
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