Effect of sulfuric acid reverse extraction method for extracting nicotine

Nicotine is an alkaloid found in plants of the Solanaceae family and has wide applications in the fields of medicine and chemical engineering. Waste tobacco leaves in the tobacco industry can serve as a rich source of natural nicotine extraction, mainly through traditional methods such as steam distillation, ion exchange, and organic solvent extraction.

The process of extracting nicotine from tobacco using sulfuric acid reverse extraction is as follows:

Raw tobacco leaves - Soaking in alkaline solution - Extraction - Adjusting the pH of the filtrate - Extraction - Sulfuric acid stripping - Adjusting the pH - Extraction - Vacuum distillation - Product

The raw tobacco is soaked in alkaline solution, and then filtered. The pH of the filtrate is adjusted. The adjusted filtrate and extractant are injected into a centrifugal extractor in a certain ratio, and mixed and separated by centrifugal force. The separated organic phase needs to be subjected to sulfuric acid back extraction. The pH value of the organic phase is adjusted, and then back extraction is carried out. After back extraction, the product is obtained through vacuum distillation

The advantages of solvent extraction method lie in its simple and convenient operation process, cheap and easy availability of extractants, and high extraction efficiency. Therefore, the most commonly used method for nicotine extraction is solvent extraction.

When performing extraction operations, the commonly used equipment mainly includes extraction tanks, extraction towers, reaction kettles, centrifugal extraction machines, etc. Combined with the operation process, centrifugal extractors have high extraction efficiency during the operation process and are widely used. The working principle of a centrifugal extractor is to rely on centrifugal force to quickly mix and separate two-phase liquids, in order to achieve extraction and separation effects.

The advantages of a liquid liquid centrifugal extractor are: good extraction and separation effect, no entrainment; Large processing capacity and low power consumption; Capable of achieving continuous and intermittent operations; The material can be selected as perfluorinated material, which is resistant to strong acid corrosion

When performing sulfuric acid reverse extraction of nicotine, the equipment selection needs to be based on the processing capacity and specific material and liquid system. If customers need to know more information, they can consult customer service online, and our company will provide you with a comprehensive solution!