The method of rapid solvent extraction to increase the oil extraction amount of microalgae
A microalgae oil and extraction technology, which is applied in the fields of fat oil/fat refining, chemical instruments and methods, fat oil/fat production, etc., can solve the problems of nutrient denaturation, low extraction efficiency, and high toxicity of reagents, and achieve short extraction time , high extraction rate, and the effect of improving compatibility
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Embodiment 1
[0042] (1) Microalgae pretreatment: remove impurities from oil-rich wet microalgae, and irradiate with short- and medium-wave infrared radiation with a wavelength of 1 μm and a radiation power of 910 W. The radiation distance is 11 cm, the temperature is 65 ° C, and the irradiation time is 1 h. Drying the microalgae, and then crushing the dried microalgae into a microalgae dry powder with a particle size of 100 meshes with a high-speed crusher, for subsequent use;
[0043] (2) Extraction: Add 250kg of microalgae dry powder into a closed reaction kettle, replace the internal air with nitrogen, then pass in 250L of ether, pressurize to 10Mpa, and heat up to 50 o C, standing for extraction for 20min, cooling to normal temperature to obtain a grease solution;
[0044] (3) Separation and purification: filter the oil solution through a PVDF / polysilane composite filter membrane under a pressure of 2.4Mpa to separate the oil and solvent, then place the oil liquid in a glass bottle and...
Embodiment 2
[0051] (1) Microalgae pretreatment: remove impurities from chlorella, and irradiate with medium and short-wave infrared radiation with a wavelength of 1.6 μm and a radiation power of 996W. The radiation distance is 10.4cm, the temperature is 67.2°C, and the irradiation time is 1.1h. Obtaining the dried microalgae, and then crushing the dried microalgae into a microalgae dry powder with a particle size of 116 meshes with a high-speed crusher, for subsequent use;
[0052] (2) Extraction: Add 250kg of microalgae dry powder into a closed reaction kettle, replace the internal air with nitrogen, then introduce 275L of methanol, pressurize to 11.8Mpa, and heat up to 81.2 o C, standing for extraction for 16.1min, cooling to normal temperature to obtain a grease solution;
[0053] (3) Separation and purification: filter the oil solution through a PVDF / polysilane composite filter membrane under a pressure of 2.6Mpa to separate the oil and solvent, then place the oil liquid in a glass bo...
Embodiment 3
[0060] (1) Microalgae pretreatment: remove impurities from red algae, and irradiate with short- and medium-wave infrared with a wavelength of 2.1 μm and a radiation power of 1075 W. The radiation distance is 9.3 cm, the temperature is 68.4 ° C, and the irradiation time is 1.3 h. , to obtain dry microalgae, and then use a high-speed crusher to crush the dry microalgae into a microalgae dry powder with a particle size of 144 mesh, and set aside;
[0061] (2) Extraction: Add 250kg of microalgae dry powder into a closed reaction kettle, replace the internal air with nitrogen, then pass in 310L of acetone, pressurize to 13Mpa, and heat up to 110 o C, standing for extraction for 13.1min, cooling to normal temperature to obtain a grease solution;
[0062] (3) Separation and purification: Filter the oil solution through a PVDF / polysilane composite filter membrane under a pressure of 2.8Mpa to separate the oil and solvent, then place the oil liquid in a glass bottle and heat it to 45.2...
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