Method for reducing acid value of bio-oil materials
A technology for oil acid value and biology, applied in the production of fatty acids, preparation/refining of fatty acids, etc., can solve the problems of increased dosage, a large amount of waste acid, waste water, corrosion, etc., and achieve the effect of removing odor and reducing acid value with high efficiency
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Embodiment 1
[0021] 195Kg of the ester mixture whose main component is fatty acid methyl ester (remove most of the methanol and glycerol from the transesterification reaction product, and then remove part of the monoglyceride, most of the diglyceride and all triglycerides by distillation) Mixed esters, brownish red, acid value 3.8mgKOH / g.) and ethanolamine are put into a stirred tank, the value of K is 0.9, at a reaction temperature of 75-80°C, a stirring speed of 490 rpm, after stirring for 60 minutes, let it stand After 40 minutes, the layers were separated, and the upper ester phase changed into a slightly bright yellow transparent liquid. The peculiar smell had been removed, and the acid value was 0.26mgKOH / g, reaching the standard of BD100 biodiesel.
Embodiment 2
[0023] 59.8g of the ester mixture whose main component is fatty acid methyl ester (removing most of methanol and glycerol from the transesterification reaction product, and then removing part of monoglyceride, most of diglyceride and all triglyceride through distillation) Mixed esters, brownish red, acid value 3.8mgKOH / g.) and ethanolamine were put into a three-necked flask, the value of K was 0.79, at a reaction temperature of 75-80°C, a stirring speed of 490 rpm, after stirring for 60 minutes, let it stand After 40 minutes, the layers were separated, and the upper ester phase changed into a slightly bright yellow transparent liquid. The peculiar smell had been removed, and the acid value was 0.79 mgKOH / g, reaching the standard of BD100 biodiesel.
Embodiment 3
[0025] 59.7g of the ester mixture whose main component is fatty acid methyl ester (remove most of methanol and glycerol from the transesterification reaction product, and then remove part of monoglyceride, most of diglyceride and all triglyceride by distillation) Mixed ester, brownish red, acid value 3.8mgKOH / g.) and diethanolamine were put into a three-necked flask, the value of K was 0.65, at a reaction temperature of 75-80°C, a stirring speed of 490 rpm, after stirring for 60 minutes, static Leave it for 40 minutes, separate layers, and the upper ester phase turns into a slightly bright yellow transparent liquid, the peculiar smell has been removed, and the acid value is 0.17mgKOH / g, reaching the standard of BD100 biodiesel.
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