System and method for separating alpha-pinene and beta-pinene in turpentine

Abstract

The invention discloses a separation system for α-pinene and β-pinene in turpentine oil, and aims to provide a separation system capable of continuous distillation to obtain α-pinene and β-pinene. The main points of the technical scheme are as follows: The α-pinene vacuum separation tower, the β-pinene vacuum separation tower and the raffinate tank, the vacuum pumping device includes a vacuum pump and several vacuum tanks, the α-pinene vacuum separation tower, the β-pinene vacuum separation tower and the raffinate tank The liquid tanks are all connected to a vacuum tank, and the bottom of the vacuum tank tower is provided with a first discharge pipe, and the first discharge pipe is communicated with the feed port of the β-pinene vacuum separation tower, and the described β-pinene A second discharge pipe is provided at the bottom of the olefin vacuum separation tower, and the second discharge pipe communicates with the feed port of the raffinate tank without returning to normal pressure, let alone re-evacuating from normal pressure, not only can continuous production The efficiency is high and the purity of α-pinene and β-pinene can be greatly improved.

Description

technical field [0001] The invention relates to a separation system and method for alpha-pinene and beta-pinene in turpentine oil. Background technique [0002] Turpentine is made from pine trees rich in turpentine, and the volatile and aromatic terpene mixture obtained through different processing methods is called turpentine. The composition of turpentine varies with tree species, tree age and origin. The main component of superior and first-grade turpentine processed with masson pine pine resin is α-pinene, followed by β-pinene and limonene. There are also small amounts of sesquiterpenes, namely longifolene and caryophyllene. α-pinene is the raw material for the synthesis of borneol, camphor, terpineol, dihydromyrcenol and other fragrance products. β-pinene is mainly used in the production of fragrances, and is also an important component for the synthesis of β-pinene resin and the production of vitamin E. One of the raw materials, α-pinene and β-pinene are the main com...

AI Technical Summary

Problems solved by technology

If the pinene component of turpentine crude oil is purified according to this process, multiple sets of rectification equipment are required, and repeated vacuum rectification is realized, so that the equipment investment cost is high, the production energy consumption is large, and the production cost is also high.

And when the still residue is transported to another vacuum separation tower, because the vacuum separation tower is in a negative pressure state, it is difficult to directly and stably extract the still residue under the normal operation of the vacuum separation tower. In order to ensure stable production, the last vacuum The separation tower stops working, and the normal pressure is restored. After the residual liquid is transported, new raw materials are added, and then the vacuum is drawn from the normal pressure again, resulting in low rectification efficiency, and repeated adjustment of rectification parameters, which reduces the purity of rectification.

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