A method of low-temperature hydrothermal treatment coupled with pyrolysis liquefaction to prepare low-nitrogen bio-oil
A technology of hydrothermal treatment and coupled heat, which is applied in the preparation of liquid hydrocarbon mixture, fat production, petroleum industry, etc., can solve the problems of reducing the quality of bio-oil, catalyst poisoning, poisoning, etc., and achieve the reduction of nitrogen content and nitrogen-containing heterocyclic compounds content, reduce the cost of quality improvement, and improve the effect of economy
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Embodiment 1
[0020] (1) Select the diatoms cultivated in Daya Bay, Shenzhen, dry and pulverize them through a 100-mesh sieve, and obtain a powder with a particle size of about 150 μm as a raw material; analyze its components: the protein content is about 29.60wt%, and the oil content is 8.2wt%. , the sugar content is 26.97wt%, the ash content is 35.23wt%; the element C, H, N, S contents are respectively 31.92wt%, 4.45wt%, 5.22wt% and 1.14wt%.
[0021] (2) Weigh 20g of raw materials and add them to a 300ml reactor, add 100ml of deionized water and mix evenly, seal the reactor; open the vent valve and feed inert gas argon, purge the reactor for 20min, and replace the The air ensures that the inside of the kettle is an inert atmosphere;
[0022] (4) Turn on the heating furnace to start heating up, heat to the set hydrolysis temperature of 125°C, 150°C, 175°C, 200°C, keep the reaction at this temperature for 30min, stop heating and cool with the built-in cooling water pipe;
[0023] (5) Colle...
Embodiment 2
[0029] (1) Select large-scale cultured chlorella as raw material, dry, pulverize and pass through a 100-mesh sieve to analyze its components: protein content is about 40.63wt%, oil content is 7.6wt%, sugar content is 44.63wt%, ash content The content is about 7.14wt%; the elemental analysis results: C, H, N, S are 52.45wt%, 7.12wt%, 8.57wt% and 0.88wt% respectively;
[0030](2) Take by weighing 20g of chlorella, measure 100ml of deionized water, mix evenly, place in the reactor and seal it, feed the inert gas argon to discharge the inside air to ensure that the reactor is an inert atmosphere;
[0031] (3) Start the heating device, heat to 125°C, 137.5°C, 150°C, 162.5°C, and 175°C respectively, and react at this temperature for 30 minutes. After the reaction, turn off the heating device and cool it with built-in cooling water; the solid product and water The collection and analysis of phase products are the same as in Example 1, and it is found that when the treatment temperatu...
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