A kind of refining method of crude sulfate turpentine

A technology of sulfate turpentine and refining method, which is applied in chemical instruments and methods, purification/separation of hydrocarbons, hydrocarbons, etc., and can solve the problems of difficulty in obtaining ultra-low sulfur pinene products, difficulty in controlling the air oxidation process, and easy formation of terpenes Solve problems such as peroxides, and achieve the effects of strong industrial reliability, high product yield and simple method

Active Publication Date: 2015-09-02
NANJING ENETEKS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] U.S. Patent US2409614 discloses a method for desulfurization and refining of CST. First, air is used to oxidize CST, and then the components are collected by vacuum distillation. This method is not only difficult to control the air oxidation process, but also has low selectivity. It is easy to oxidize terpenes excessively, causing the loss of the target product. At the same time, it is easy to generate terpene peroxides during air oxidation, causing safety hazards
[0011] In a word, the above methods not only have various problems in the process, but also are difficult to obtain ultra-low sulfur pinene products

Method used

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  • A kind of refining method of crude sulfate turpentine

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Effect test

Embodiment 1

[0036] The mass composition of crude sulfate turpentine raw material is: pinene (α-pinene and β-pinene) 82%, total sulfur 1023ppm, water 0.3%, solid impurities 0.21%, and the rest are other terpenoid components.

[0037] (1) The crude sulfate turpentine raw material is preheated at 55°C by heat exchanger E-1 at a rate of 12kg / h, and then enters flash tower T-1 from pipeline 1 for flash separation treatment. The temperature in the flash tower is 102°C, the temperature of the reboiler in the packing separation section is 104°C. Light sulfur components such as sulfides and mercaptans with a boiling point lower than α-pinene flowing out from the top of the flash tower are output to the alkali neutralization absorption system R-2 through pipeline 2, and are neutralized by existing methods Direct discharge; while the initial desulfurization material (with a sulfur content of 35.4ppm) flowing out from the bottom of the flash tower is output to the vacuum rectification tower T-2 throu...

Embodiment 2

[0042] The mass composition of crude sulfate turpentine raw material is: pinene (α-pinene and β-pinene) 88%, total sulfur 897ppm, moisture 0.35%, solid impurities 0.33%, and the rest are other terpenoid components.

[0043] (1) The crude sulfate turpentine raw material is preheated to 60°C through the heat exchanger E-1 at a rate of 14kg / h, and then enters the flash tower T-1 from the pipeline 1 for flash separation treatment. The temperature in the flash tower is 101°C, and the reboiler temperature in the packing separation section is 103°C. Light sulfur components such as sulfides and mercaptans with a boiling point lower than α-pinene flowing out from the top of the flash tower are output to the alkali neutralization absorption system R-2 through pipeline 2, and are neutralized by existing methods Direct discharge; while the initial desulfurized material (with a sulfur content of 32.3ppm) flowing out from the bottom of the flash tower is output to the vacuum rectification t...

Embodiment 3

[0048] The mass composition of crude sulfate turpentine raw material is: pinene (α-pinene and β-pinene) 81%, total sulfur 623ppm, moisture 0.31%, solid impurities 0.19%, and the rest are other terpenoid components.

[0049] (1) The crude sulfate turpentine raw material is preheated to 66°C through the heat exchanger E-1 at a rate of 10kg / h, and then enters the flash tower T-1 from the pipeline 1 for flash separation treatment. The temperature in the flash tower is 105°C, and the temperature of the reboiler in the packing separation section is 107°C. Light sulfur components such as sulfides and mercaptans with a boiling point lower than α-pinene flowing out from the top of the flash tower are output to the alkali neutralization absorption system R-2 through pipeline 2, and are neutralized by existing methods Direct discharge; while the initial desulfurization material (with a sulfur content of 33.7ppm) flowing out from the bottom of the flash tower is output to the vacuum recti...

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Abstract

The invention relates to a refined method for crude sulfate turpentine. The method for the crude sulfate turpentine comprises the following steps that (1),CST conducted heat transfer enters a flashing tower to conduct flash separation, materials flowing from the bottom of the flashing tower are collected and sent to the middle portion of a vacuum rectifying column to be rectified and separated; (2), after materials flowing from the tower roof of the vacuum rectifying column are heat transferred, the materials enter an oxidation absorption tower to be oxidized and adsorbed; (3), materials after being oxidized and adsorbed enter an alkali wash reaction still and are alkali washed by alkaline solutions; (4), materials after being alkali washed enter a phase splitter, an upper layer oil phase acquired from layers being separated enters ithe vacuum rectifying column with a side line discharging to be separated, a Alpha-pinene product is acquired from an upper side line and a Beta -pinene product is acquired from a lower side line. The refined method for the crude sulfate turpentine applies a method which combines the processes of rectification, adsorption and chemical oxidation to acquire a pinene product with super low sulfur. The refined method for the crude sulfate turpentine is simple, low in energy consumption and production cost, and high in industrial reliability.

Description

Area of invention [0001] The present invention involves loose oil -saving, specifically involves desulfurization and purification of crude sulfate pine fuel saving, and more specific method involves a ultra -low sulfurne -saving product refined method of coarse sulfate pine oil -saving. Background technique [0002] Pine oil-saving is a natural product with biological activity. Its main components are α-蒎nene and β-ethyne. It is currently widely used in products in the fields of pharmaceutical, pesticide, resin, information industry, and communications. [0003] Depending on the source, pine oil -saving can be divided into four types: fat pine oil -saving, coarse sulfate pine oil -saving (hereinafter referred to as CST), wood pine oil -saving, and dry distillation oil -saving.China is mainly based on fat pine oil -saving.Due to the high cost of fat -saving fat, CST, which has a lower production cost, has been favored by more and more producers and consumers. [0004] CST is a by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C13/42C07C13/40C07C7/00
Inventor 张志炳杨高东林力克
Owner NANJING ENETEKS
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