Preparation method for biological diesel oil
A biodiesel and vegetable oil technology, applied in the fields of environmental protection and renewable energy, can solve the problems of high energy consumption, environmental pollution by industrial waste water, and inability to continuous production, and achieve the advantages of reducing production cost, good mass transfer effect, and avoiding energy consumption. Effect
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Embodiment 1
[0022] Pack 201 macroporous strongly basic polystyrene anion exchange resin into 3×140 cm strip-shaped packets with 60-mesh steel wire mesh and fill them into the trickle bed reactor, and methanol vapor is introduced from the bottom of the trickle bed to make the catalyst bed layer was heated to methanol vaporization temperature of 65°C, and then from the top of the trickle bed at 150mL / m 2 The flow rate of min is passed into the rapeseed oil, and the residence time of the vegetable oil in the trickle bed is controlled to 160min, during which the methanol vapor is kept in excess, and the excess methanol is condensed and recovered from the top of the reactor. The reaction products are biodiesel and glycerin, and the products are distilled After the excess methanol in the mixture was left to stand for stratification, the glycerol in the lower layer was separated to obtain biodiesel with a yield of 96.87%.
Embodiment 2
[0024] Pack 203 macroporous strongly basic styrene-based type II anion exchange resin into 1×200cm strip-shaped packets with 50-mesh steel mesh and fill them into the trickle bed reactor. Methanol vapor is introduced from the bottom of the trickle bed to control the catalyst The bed temperature is 100°C, and then from the top of the trickle bed at 50mL / m 2 The flow rate of min is passed into soybean oil, and the residence time of vegetable oil in the trickle bed is controlled to be 200min, during which methanol vapor is kept in excess, and excess methanol is condensed and recovered from the top of the reactor, and the reaction products are biodiesel and glycerin, which are distilled out of the product After the excess methanol was left to stand for separation, the glycerol in the lower layer was separated to obtain biodiesel, and the yield was 93.20%.
Embodiment 3
[0026] Use 60-mesh copper wire mesh to pack 320 macroporous strongly basic styrene-based bifunctional anion-exchange resins into 4×4cm strip-shaped packets and fill them into the trickle bed reactor. Methanol vapor is introduced from the bottom of the trickle bed to control The temperature of the catalyst bed is 80°C, and then from the top of the trickle bed at 400mL / m 2 The flow rate of min is passed into the peanut oil, and the residence time of the vegetable oil in the trickle bed is controlled to be 100min, during which the methanol vapor is kept in excess, and the excess methanol is condensed and recovered from the top of the reactor. The reaction products are biodiesel and glycerin, and the excess in the product is distilled After the methanol was left to stand for stratification, the glycerol in the lower layer was separated to obtain biodiesel with a yield of 58.26%.
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