Process and device for extracting citral from Litsea cubeba oil
A technology of litsea cubeba oil and citral, applied in the separation/purification of carbonyl compounds, organic chemistry, etc., can solve the problems of high impurity content, achieve high purity, short heating time, and uniform thickness
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[0019] Example 1: Example of a device for extracting citral from Litsea cubeba oil
[0020] Reference figure 1 , The embodiment of the device for extracting citral from Litsea cubeba oil in the present invention includes a raw material tank 1, a metering pump 2. Rotameter 3. Primary molecular still 4. Distillate intermediate storage tank 5. Distillate residue storage tank intermediate storage tank 6. Metering pump 7. Rotameter 8. Two-stage molecular still 9, distillate storage tank 10, and distillate storage tank 11, vacuum system, heating system and cooling water system; in raw material tank 1 and rotameter 3 with metering pump 2. Metering pump The inlet of 2 is connected with the outlet of raw material tank 1, and the metering pump 2 outlet with rotameter 3 inlets connected, rotameter The outlet of 3 is connected to the upper inlet of the first molecular distiller 4, and the lower part of the first molecular distiller has distillate and distillate outlets and ...
Example Embodiment
[0026] Example 2
[0027] The operating conditions of this embodiment are: in the selected raw material Litsea cubeba oil, the mass fraction of citral is 70.2%, the primary distillation temperature is 40°C, the pressure is 100 Pa, the secondary distillation temperature is 65°C, and the pressure is 1 Pa. The mass fraction of citral discharged from the bottom of the secondary molecular still is 97.9%.
Example Embodiment
[0028] Examples 3~7
[0029] The process condition data of each step in Examples 3 to 6 and the mass fraction of citral in the product are shown in Table 1.
[0030] Table 1 The process conditions of each step of Examples 3 to 6 and the mass fraction of citral in the product
[0031]
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