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A method and system for preparing a solvent for extracting plant spices

A technology for extracting solvents and plant fragrances, applied in the field of preparing extraction solvents, can solve the problems of high equipment requirements, large equipment investment, large environmental pollution, etc., and achieves the effects of low operating cost, low investment and low environmental pollution.

Active Publication Date: 2016-02-17
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the hydrofining method can remove aromatics, sulfur, and unsaturated hydrocarbons at the same time, and will not produce waste liquid, waste gas and other pollutants, but this method requires high equipment requirements, complex processes, and large equipment investment
The acid-base refining method can remove aromatics and unsaturated hydrocarbons. This method has low investment in equipment, but produces a large amount of waste water, which greatly pollutes the environment.

Method used

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  • A method and system for preparing a solvent for extracting plant spices
  • A method and system for preparing a solvent for extracting plant spices
  • A method and system for preparing a solvent for extracting plant spices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Raw materials: Low-aromatic low-sulfur No. 6 solvent oil semi-finished product, initial boiling point 62°C, 98% distillation temperature 75°C, aromatics content 0.03%, sulfur content 0mg kg -1 , bromine index 78mgBr (100g) -1 .

[0021] Start the production system, send the semi-finished product of solvent oil No. 6 to the rectification tower 1 for rectification and cutting, obtain the semi-finished product of the extraction solvent with a distillation range of 60~70°C, and then send the semi-finished product of the extraction solvent to the adsorption tower for adsorption Treatment, removal of unsaturated hydrocarbons, reduction of bromine index, and extraction of plant fragrance solvents.

[0022] The control process parameters are: the number of theoretical plates in the rectification section: 10, the number of theoretical plates in the stripping section: 10, the temperature at the top of the tower: 69°C, the temperature at the bottom of the tower: 82°C, the operati...

Embodiment 2

[0026] Raw materials: Low-aromatic low-sulfur No. 6 solvent oil semi-finished product, initial boiling point 62°C, 98% distillation temperature 75°C, aromatics content 0.03%, sulfur content 0mg kg -1 , bromine index 78mgBr (100g) -1 .

[0027] Start the production system, start the production system, send the semi-finished product of solvent oil No. 6 to the rectification tower 1 for rectification and cutting, obtain the semi-finished product of the extraction solvent with a distillation range of 60~70°C, and then send the semi-finished product of the extraction solvent to the adsorption Adsorption treatment is carried out in the tower to remove unsaturated hydrocarbons, reduce the bromine index, and obtain a plant fragrance extraction solvent.

[0028] The control process parameters are: the number of theoretical plates in the rectification section: 10, the number of theoretical plates in the stripping section: 10, the temperature at the top of the tower: 69°C, the temperatu...

Embodiment 3

[0032] Raw materials: Low-aromatic low-sulfur No. 6 solvent oil semi-finished product, initial boiling point 62°C, 98% distillation temperature 75°C, aromatics content 0.03%, sulfur content 0mg kg -1 , bromine index 78mgBr (100g) -1 .

[0033] Start the production system, send the semi-finished product of solvent oil No. 6 to the rectification tower 1 for rectification and cutting, obtain the semi-finished product of the extraction solvent with a distillation range of 60~70°C, and then send the semi-finished product of the extraction solvent to the adsorption tower for adsorption Treatment, removal of unsaturated hydrocarbons, reduction of bromine index, and extraction of plant fragrance solvents. The control process parameters are: the number of theoretical plates in the rectification section: 15, the number of theoretical plates in the stripping section: 15, the temperature at the top of the tower: 70°C, the temperature at the bottom of the tower: 84°C, the operating pressu...

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Abstract

The invention discloses a method for preparing a plant fragrance extraction solvent. The No. 6 solvent oil semi-finished product is used as a raw material, which is sent to a rectification tower for rectification and cutting to obtain a semi-finished product of the extraction solvent with a distillation range of 60-70°C, and then The semi-finished product of the extraction solvent is sent to an adsorption tower for adsorption treatment to remove unsaturated hydrocarbons, reduce the bromine index, and obtain a high-quality plant fragrance extraction solvent with low aromatic content, low sulfur content, and low bromine index. The process of the whole method is simple, the equipment investment is low, and there is no waste gas and waste water in the production process, and no environmental pollution is caused.

Description

technical field [0001] The invention relates to a method for preparing an extraction solvent, in particular to a method for preparing a plant spice extraction solvent. The invention also relates to a production system for preparing a plant flavor extraction solvent. Background technique [0002] At present, the extraction solvent used in industry mainly adopts No. 70 solvent naphtha as the extraction solvent of plant spices. However, aromatics, iodine value and sulfur content in No. 70 solvent oil are relatively high. In the production of plant spices, the distillation range of the extraction solvent, iodine value, sulfur content and aromatics have a greater impact on the quality of spice products, and the quality of the obtained essence products not ideal. Therefore, spice production plants are in urgent need of high-quality extraction solvent oils with lower aromatics, unsaturated hydrocarbons, and sulfur content. [0003] At present, the methods for dearomatization, de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/08C11B9/00
Inventor 廖定满黄艳芳谭伟红卢振旭骆新平梁红梅叶宁涟孙望平谢正良梁胡
Owner CHINA PETROLEUM & CHEM CORP
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