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Refined method for crude sulfate turpentine

A technology of sulfate turpentine and refining method, which is applied to chemical instruments and methods, purification/separation of hydrocarbons, hydrocarbons, etc., can solve problems such as difficulty in obtaining ultra-low thiopinene products, and achieves high industrial reliability and method. Simple and effective results

Active Publication Date: 2014-05-14
NANJING ENETEKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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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  • Refined method for crude sulfate turpentine

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Experimental program
Comparison scheme
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

field of invention [0001] The invention relates to turpentine, in particular to the desulfurization and purification of crude sulfate turpentine, and more specifically to a method for refining an ultra-low sulfur pinene product of crude sulfate turpentine. Background technique [0002] Turpentine is a biologically active natural product, and its main components are α-pinene and β-pinene. It has been widely used in product development in the fields of medicine, pesticide, resin, information industry, and communication. [0003] According to different sources, turpentine can be divided into four types: gum turpentine, crude sulfate turpentine (hereinafter referred to as CST), wood turpentine, and dry distillation turpentine. China is mainly based on gum turpentine. Due to the high cost of extracting gum turpentine, CST with lower production cost is favored by more and more producers and consumers. [0004] CST is a by-product of producing pulp through kraft process with pine...

Claims

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Application Information

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Patent Type & Authority Applications(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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