Method for preparing alloocimene from alpha-pinene and applied equipment
A technology of allo-ocimene and pinene, which is applied in the field of preparation of allo-ocimene from α-pinene, which can solve the problems of incomplete cracking, low industrial productivity, and low content of allo-ocimene, etc., so as to improve the utilization rate of raw materials and accelerate the processing process , Improve the effect of condensation effect
Active Publication Date: 2019-04-16
江西开源香料有限公司
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Problems solved by technology
However, the content of allo-ocimene obtained by one-time cracking is relatively low, and there are many by-products. The yield does not exceed 10%, and the cracking is not complete. About 80% of the raw materials are not cracked, and the energy consumption is relatively high.
If the cracking temperature is simply increased, a large number of impurities will be generated, and the yield will not be high. Allo-ocimene is heteropolymerized at high temperature. If the obtained product is de-cracked with uncracked α-pinene, because allo-ocimene is easy to polymerize, The effect is also unsatisfactory, the processing is also more troublesome, and the industrial productivity is low
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[0030] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0031] A method for preparing allo-ocimene from α-pinene is disclosed in a specific embodiment of the present invention, comprising the following steps:
[0032] S1, putting a certain amount of α-pinene raw material into the still 100, controlling the temperature of the still 100 at 160°C to 180°C to gasify the α-pinene;
[0033] S2, the gasified α-pinene gas enters the condenser 200, exchanges heat in the condenser 200, condenses into α-pinene concentrate, and collects in the buffer tank 300;
[0034] S3, the α-pinene concentrate in the buffer tank 300 is quantitatively controlled by the electromagnetic flowmeter 641 and slowly enters the cracking device 400, and the α-pinene concentrate is cracked in the cracking device 400 to generate alloocimene;
[0035] S4, the cracking device 400 sends all t...
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The invention provides a method for preparing alloocimene from alpha-pinene and applied equipment. The method includes the following steps that by controlling the temperature of a distillation kettle,alpha-pinene can be gasified independently and cracked after condensation, and above steps are repeated to make the alpha-pinene fully cracked; substances in the distillation kettle are detected after the preset working time is reached, and if the detection result meets the standard, distillation and cracking of the alpha-pinene continue; if the detection result does not meet the standard, the alpha-pinene and the alloocimene are subjected to fractional distillation and collected independently. The equipment applied in the method includes the distillation kettle, a condenser, a buffer box, acracking unit, a first collecting tank and a second collecting tank which cooperate one another. Through overall cooperation, separation and cracking are achieved at the same time by utilizing the large temperature difference between alpha pinene and alloocimene, alloocimene high in content thus can be obtained, the utilization rate of raw materials is significantly improved, and the production efficiency is improved.
Description
technical field [0001] The invention relates to the field of preparation of allo-ocimene, and more specifically, relates to a method and application equipment for preparing allo-ocimene from α-pinene. Background technique [0002] In the existing technology for producing allo-ocimene by pyrolysis of α-pinene, allo-ocimene is generally obtained by pyrolysis isomerization at high temperature in a cracking tube device under vacuum conditions, and relatively pure allo-ocimene is obtained by vacuum rectification. However, the content of allo-ocimene obtained by one-time cracking is relatively low, and the by-products are also many. The yield does not exceed 10%, and the cracking is not complete. About 80% of the raw materials are not cracked, and the energy consumption is high. If the cracking temperature is simply increased, a large number of impurities will be generated, and the yield will not be high. Allo-ocimene is heteropolymerized at high temperature. If the obtained produ...
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Patent Timeline
Login to View More IPC IPC(8): B01D3/10B01D5/00B01J19/00C07C5/31C07C11/21C07C7/00C07C7/04
CPCB01D3/10B01D5/0006B01D5/0015B01J19/00C07C5/31C07C7/005C07C7/04C07C11/21
Inventor 曾令贵廖国荣曾淑燕
Owner 江西开源香料有限公司