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Turpentine rectification tower vacuum system

A technology of vacuum system and turpentine, applied in the field of vacuum system, can solve the problems of easy damage of vacuum pump, lower product yield, unstable vacuum degree, etc., and achieve the effects of reducing environmental pollution, low cost and stable vacuum degree

Pending Publication Date: 2017-05-24
GUANGXI FORESTRY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The turpentine distillation process is generally carried out in a vacuum state, but the vacuum degree of the existing vacuum system is unstable during the working process, the vacuum pump is easily damaged, and a small amount of turpentine components will be taken out by the vacuum system, which reduces the yield of the product

Method used

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  • Turpentine rectification tower vacuum system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] as attached figure 1 As shown, the vacuum system of the turpentine rectification tower includes a rectification tower 1, a condenser 3, a water ring vacuum pump 6 and a reboiler 7; the outlet of the rectification tower 1 top and the condenser 3 Connected, the bottom of the rectification tower is connected with the feed port at the top of the reboiler 7, the bottom of the reboiler 7 is connected with a waste liquid storage tank 13, the water ring vacuum pump 6 is connected with the top of the rectification tower 1 Connected, the water ring vacuum pump 6 is also connected with the oil-water separator 5.

[0027] Further, two water ring vacuum pumps 6 are arranged in parallel.

[0028] Further, the feed inlet of the rectification tower 1 is located in the middle section of the rectification tower 1 . The packing in the rectifying tower 1 is corrugated packing of stainless steel wire mesh.

[0029] Further, the reboiler 7 is a tube-and-tube reboiler, which includes a tan...

Embodiment 2

[0034] In this embodiment, one water ring vacuum pump 6 is provided, and the rest of the settings are the same as those in Embodiment 1.

[0035] Slash pine turpentine (62.17% α-pinene content and 26.45% β-pinene content in turpentine oil) is preheated to 100°C in the raw material storage tank and sent to the rectification tower through the feed pump, and the water ring vacuum pump is started. The turpentine oil enters the vacuum tube and reaches the water ring vacuum pump. Through the water circulation of the water ring vacuum pump water pipe, it reaches the oil-water separator. Since the turpentine oil is lighter than water, it can be recovered at the recovery port of the oil-water separator after oil-water separation. During the rectification process, the vacuum degree of the control system is -0.09MPa, and the α-pinene gas is isolated at a reflux ratio of 10:1, and the α-pinene gas passes through the condenser separately, and the condensed distillate is detected to meet the...

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Abstract

The invention discloses a turpentine rectification tower vacuum system which comprises a rectification tower (1), a condenser (3), water ring vacuum pumps (6) and a reboiler (7), wherein a discharge port on the top of the rectification tower (1) is connected with the condenser (3); the bottom of the rectification tower is connected with a feed port on the top of the reboiler (7); the bottom of the reboiler (7) is connected with a waste liquid storage tank (13); the water ring vacuum pumps (6) are connected with the top of the rectification tower (1); and the water ring vacuum pumps (6) are also connected with an oil-water separator (5). The two water ring vacuum pumps constitute the vacuum system, so that the vacuum degree of the rectification tower is stabler, the effective components can be volatilized more conveniently, and the substance and energy exchanges between the gas phase and liquid phase of the turpentine can be kept stable. The circulation of the circulating water can utilized to take a small amount of the turpentine component out of the vacuum system, thereby enhancing the purity and yield of the alpha-pinene and beta-pinene products, and reducing the environmental pollution.

Description

technical field [0001] The invention relates to the technical field of fine chemical equipment, in particular to a vacuum system for a turpentine distillation tower. Background technique [0002] Turpentine is one of the important forestry chemical products in my country, and it is an abundant renewable resource product in China, and its output accounts for about 1 / 4 of the world's total. The main components of turpentine are α-pinene, camphene, β-pinene, myrcene, limonene, p-cymene, phellandrene, 1,8-cineole, longifolene and caryophyllene, among which α- Pinene and β-pinene account for more than 80%. α-pinene and β-pinene are important raw materials in perfumery, medicine and fine organic synthesis industries. The separation and extraction of turpentine α-pinene and β-pinene usually adopts a rectification process. The rectification process is a typical unit operation for separating miscible liquid mixtures in chemical production. Its essence is multi-stage distillation, t...

Claims

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Application Information

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IPC IPC(8): C07C7/04C07C13/40C07C13/42B01D3/10
CPCB01D3/106C07C7/04C07C13/40C07C13/42
Inventor 陆顺忠黎贵卿关继华谢刚邱米李秋庭吴建文江燕杨漓杨素华苏骊华党中广
Owner GUANGXI FORESTRY RES INST
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