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Method for extracting nicotine by steam distillation and acid absorption

A technology of steam distillation and acid absorption, which is applied in the direction of organic chemistry, can solve the problems of expensive equipment, pollute the environment, and high cost of lifting, and achieve the effect of industrial production, no pollution to the environment, and high production efficiency

Inactive Publication Date: 2016-02-10
NANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic solvent extraction-back extraction method not only consumes a large amount of organic solvents, but also pollutes the environment; the carbon dioxide supercritical extraction method not only requires expensive equipment but also costs too much; Solanesol is transformed into enantiomers, resulting in reduced biological activity

Method used

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  • Method for extracting nicotine by steam distillation and acid absorption
  • Method for extracting nicotine by steam distillation and acid absorption
  • Method for extracting nicotine by steam distillation and acid absorption

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The method for extracting nicotine by steam distillation and acid absorption specifically comprises the following steps:

[0042] Step 1. Take the mixed raw materials of tobacco leaves and tobacco rods with a nicotine content of 1.5%, crush them until the length does not exceed 2cm, and obtain tobacco powder for later use; take sodium hydroxide and add water to make lye for later use; mix the tobacco powder and alkali Add the liquid into the feeding funnel and the lye tank of the feeder respectively, start the motor of the feeder, and mix the tobacco powder and the lye inside the feeder to obtain the alkali-containing material for standby;

[0043] Step 2, the alkali-containing material obtained in step 1 is transported to the feed port of the steam distillation tank, and at the same time, the air inlet of the steam distillation tank inputs water vapor into the tank through a water vapor introduction pipe, and the steam distillation tank It forms an included angle of 20...

Embodiment 2

[0048] The method for extracting nicotine by steam distillation and acid absorption specifically comprises the following steps:

[0049] Step 1. Take tobacco leaf raw materials with a nicotine content of 2.0%, crush them to a length of no more than 2 cm, and obtain tobacco powder for later use; take sodium hydroxide and add water to prepare lye for later use; add the tobacco powder and lye to the In the feeding funnel and lye tank of the feeder, start the motor of the feeder to mix the tobacco powder and lye inside the feeder to obtain the alkali-containing material for standby;

[0050] Step 2, the alkali-containing material obtained in step 1 is transported to the feed port of the steam distillation tank, and at the same time, the air inlet of the steam distillation tank inputs water vapor into the tank through a water vapor introduction pipe, and the steam distillation tank It forms an included angle of 20° with the horizontal direction, and the alkali-containing material i...

Embodiment 3

[0055] The method for extracting nicotine by steam distillation and acid absorption specifically comprises the following steps:

[0056] Step 1. Take tobacco leaves and tobacco rods with a nicotine content of 0.9% as raw materials, crush them until the length does not exceed 2 cm, and obtain tobacco powder for later use; take sodium hydroxide and add water to prepare lye for later use; mix the tobacco powder and lye Add the liquid into the feeding funnel and the lye tank of the feeder respectively, start the motor of the feeder, and mix the tobacco powder and the lye inside the feeder to obtain the alkali-containing material for standby;

[0057] Step 2, the alkali-containing material obtained in step 1 is transported to the feed port of the steam distillation tank, and at the same time, the air inlet of the steam distillation tank inputs water vapor into the tank through a water vapor introduction pipe, and the steam distillation tank It forms an included angle of 20° with th...

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Abstract

The invention discloses a method for extracting nicotine by steam distillation and acid absorption. The steps are as follows: the tobacco raw material is pulverized and added to a feeder together with lye for mixing to obtain an alkali-containing material, and then the alkali-containing material is transported to In the steam distillation tank, the alkali-containing material is mixed with water vapor in reverse motion to obtain nicotine-containing water vapor, and then the nicotine-containing water vapor is passed into the acid absorption liquid in the jacketed enamel kettle, and the acid absorption liquid absorbs smoke After the alkali is saturated, it is discharged, and the nicotine extract is obtained after separation and purification; the gas generated in the jacketed enamel kettle is reabsorbed by the cylindrical enamel cylinder, and then discharged to the steam distillation tank for recycling. The invention can effectively separate the nicotine from other components in the tobacco, and the biological activity of the solanesol in the residue can be kept unchanged, and the industrial production of the nicotine product can be realized.

Description

technical field [0001] The invention belongs to the technical field of alkaloid extraction, and in particular relates to a method for extracting nicotine by steam distillation and acid absorption. Background technique [0002] Nicotine is a high-efficiency insecticide and biological pesticide with no residual toxicity and pollution. Natural nicotine has a wide range of uses and can be used to prepare insecticides specially used for food, oil, vegetables, fruits and other edible crops. In recent years, the market demand for natural nicotine is increasing day by day, especially high-purity natural nicotine, which has been widely used in the development of high-tech products. Waste tobacco contains very valuable nicotine and solanesol. To extract nicotine and solanesol, there are organic solvent extraction-back extraction method, carbon dioxide supercritical extraction method and carbonization decarboxylation (dry distillation) method. The organic solvent extraction-back extra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D401/04
CPCC07D401/04
Inventor 王利亚李森兰赵洁李波刘静康海霞
Owner NANYANG NORMAL UNIV
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