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
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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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