Deodorization method in ester synthesis
A technology of esters and polyglycerol esters, which is applied in the field of deodorization in the synthesis of esters, can solve the problems of prolonged reaction time, aggravated odor of polymerization products, unpleasant odor of polyglycerol esters, etc., to achieve environmental and human safety protection, Effects of reducing water consumption and water discharge, and solving unpleasant odors
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[0033] Example 1
[0034] A deodorizing method in ester synthesis, characterized in that it comprises the following steps:
[0035] S1. The synthesis reaction of polyglycerol esters is carried out in the reactor by means of stepwise heating;
[0036] S2. In the later stage of the reaction, adjust the vacuum inside the reactor to -0.06-0.099MPa;
[0037] S3. In the exhaust stage, exhaust through the riser and recover some materials;
[0038] In step S3, the unpleasant odor is removed by the tray group set in the riser.
[0039] Further, in step S2, the vacuum degree is -0.01 MPa.
[0040] Further, in step S1, the stepwise heating process is as follows: adding polyglycerol to the reactor, heating to 50°C, adding a basic catalyst, stirring and heating to 80°C, adding fatty acids to react when the temperature is 60°C, Raise the temperature to 180°C for 0.5 hours, then slowly increase the temperature to 240°C for rapid reaction, adjust the vacuum inside the reactor to -0.08MPa, measure the am...
Example Embodiment
[0056] Example 2
[0057] A deodorizing method in ester synthesis, characterized in that it comprises the following steps:
[0058] S1. The synthesis reaction of polyglycerol esters is carried out in the reactor by means of stepwise heating;
[0059] S2. In the late stage of the reaction, adjust the vacuum inside the reactor to -0.06-0.099MPa;
[0060] S3. In the exhaust stage, exhaust through the riser and recover some materials;
[0061] In step S3, the unpleasant odor is removed by the tray group provided in the riser.
[0062] Further, in step S2, the vacuum degree is 0.06 MPa.
[0063] Further, in step S1, the stepwise heating process is as follows: adding polyglycerol to the reactor, heating to 105°C, adding a basic catalyst, stirring and heating to 180°C, adding fatty acids to react when the temperature is 130°C, Raise the temperature to 230°C for 1 hour, then slowly raise the temperature to 298°C for rapid reaction, adjust the vacuum inside the reactor to 0.099MPa, measure the am...
Example Embodiment
[0070] Example 3
[0071] A deodorizing method in ester synthesis, characterized in that it comprises the following steps:
[0072] S1. The synthesis reaction of polyglycerol esters is carried out in the reactor by means of stepwise heating;
[0073] S2. In the late stage of the reaction, adjust the vacuum inside the reactor to -0.06MPa;
[0074] S3. In the exhaust stage, exhaust through the riser and recover some materials;
[0075] In step S3, the unpleasant odor is removed by the tray group provided in the riser.
[0076] Further, in step S1, the stepwise heating process is as follows: adding polyglycerol to the reactor, heating to 65°C, adding alkaline catalyst, stirring and heating to 95°C, adding fatty acid to react when the temperature is 75°C, Raise the temperature to 195℃ for 0.6 hours, then slowly increase the temperature to 260℃ for rapid reaction, adjust the vacuum inside the reactor to -0.01MPa, measure the amount of water generated to 80% of the predetermined value, and en...
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