Method for simultaneously preparing p-cymene and rosin-based biodiesel by taking rosin as raw material
A technology for cymene and biodiesel, applied in the field of deep processing of turpentine, can solve the problems such as the research report on cymene and turpentine-based biodiesel that have not yet been seen, and achieve the effects of reproducible toxic gas, simple equipment and mild reaction conditions
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Embodiment 1
[0030] Take a certain amount of crude turpentine and put it into the mixture of dichloromethane and acetonitrile, the mass ratio of turpentine, dichloromethane and acetonitrile is 1:1.1:2, heat and stir in a water bath to dissolve, filter to remove impurities, and obtain a clean rosin solution. Put a certain amount of bentonite through a 200-mesh sieve in the container, add 4.7 times the amount of 2mol L -1 H 2 SO 4 solution, heated in a water bath to 90°C, stirred at a speed of 160r / min for 2h, centrifuged, discarded the supernatant, added distilled water to stir and centrifuged, repeated the operation until the supernatant was neutral, dried and ground through a 200-mesh sieve to obtain the acid modified Sexual bentonite. Add the net turpentine liquid and the acid-modified bentonite to the reactor in a ratio of 10:1, and feed neon gas at a flow rate of 200L / h for protection, stir with a mechanical stirrer at a speed of 310r / min, and raise the temperature to 245°C, during ...
Embodiment 2
[0033] Take a certain amount of crude turpentine and put it into the mixture of dichloromethane and acetonitrile, the mass ratio of turpentine, dichloromethane and acetonitrile is 1:1.3:2, heat and stir in a water bath to dissolve, filter to remove impurities, and obtain a clean rosin solution. Put a certain amount of bentonite through a 200-mesh sieve in the container, add 4.5 times the amount of 2mol L -1 H 2 SO 4 solution, heated in a water bath to 85°C, stirred at a speed of 150r / min for 2h, centrifuged, discarded the supernatant, added distilled water to stir and centrifuged, repeated the operation until the supernatant was neutral, dried and ground through a 200-mesh sieve to obtain acid modified Sexual bentonite. Add the net turpentine liquid and the acid-modified bentonite to the reactor in a ratio of 11:1, and feed neon gas at a flow rate of 230L / h for protection, stir with a mechanical stirrer at a speed of 380r / min, and raise the temperature to 250°C, during whic...
Embodiment 3
[0036] Take a certain amount of crude turpentine and put it into the mixture of dichloromethane and acetonitrile. The mass ratio of turpentine, dichloromethane and acetonitrile is 1:1.5:2, heat and stir in a water bath to dissolve, filter to remove impurities, and obtain a clean rosin solution. Put a certain amount of bentonite through a 200-mesh sieve in the container, add 4.8 times the amount of 2mol L -1 H 2 SO 4solution, heated in a water bath to 95°C, stirred at a speed of 160r / min for 2h, centrifuged, discarded the supernatant, added distilled water to stir and centrifuged, repeated the operation until the supernatant was neutral, dried and ground through a 200-mesh sieve to obtain acid modified Sexual bentonite. Add the net turpentine liquid and acid-modified bentonite to the reactor at a ratio of 7:1, and pass through xenon gas at a flow rate of 260L / h for protection, stir with a mechanical stirrer at a speed of 350r / min, and raise the temperature to 240 ℃, during w...
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