Tobacco Extract Preparation for E-Cigarettes
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Solution Overview
Problem
Conventional methods for preparing tobacco extracts for electronic smoking devices result in low nicotine concentration and use of non-water solvents or treated water, which are not suitable for vapor inhalation, leading to ineffective nicotine delivery and regulatory challenges.
Innovation Solution
A method involving grinding tobacco into granulated particles, heating purified water to 150-200°F, and injecting it at 9-12 bar pressure through the tobacco to produce an aqueous solution, which is then heated and reused for extraction, producing a tobacco extract with high nicotine content and no non-water solvents, suitable for electronic smoking devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional extraction methods are used, then the extraction process is simple, but the nicotine concentration in the extract is low
Solution Approach 1:
The extraction process is divided into multiple sequential stages: initial extraction with cold water, heating phase, extraction with hot water, and concentration phase. Each stage targets different components and optimizes nicotine transfer efficiency, transforming a simple single-step process into a multi-stage sophisticated extraction system that achieves high nicotine concentration.
Solution Approach 2:
The patent systematically changes physical parameters throughout the extraction process: temperature increases from ambient to boiling point, pressure is applied during concentration, and solvent composition evolves from pure water to concentrated extract. These parameter changes drive the extraction efficiency and nicotine concentration upward through each stage.
2Quantity of substance
If non-water solvents or treated water are used, then extraction efficiency may be improved, but the extract is not suitable for vapor inhalation and creates regulatory challenges
Solution Approach 1:
The patent applies different water qualities at different stages of extraction: purified water is used in the initial extraction to ensure purity, while the extract is subsequently concentrated and processed. This localized quality control ensures that the final product meets inhalation safety requirements while maintaining extraction efficiency throughout the process.
Solution Approach 2:
The patent converts the potential harm of using treated water or non-water solvents (which might improve extraction efficiency but create regulatory issues) into a benefit by demonstrating that purified water, when used with proper extraction methodology, achieves both high efficiency and regulatory compliance. The method transforms a perceived limitation into an advantage.
3Quantity of substance
If multiple extraction cycles are performed, then nicotine concentration increases, but processing time increases
Solution Approach 1:
The extraction process is designed as a continuous operation where the output of one stage becomes the input of the next. The initial cold water extraction feeds into the heating phase, which transitions to hot water extraction, followed by concentration. This continuous flow eliminates idle time between stages and maintains productive action throughout the entire process, achieving high nicotine concentration without proportionally increasing total processing time.
4Reliability
If additional agents are added to enhance nicotine delivery, then delivery effectiveness improves, but product complexity and potential harmful factors increase
Solution Approach 1:
The tobacco matrix itself serves as the source and delivery mechanism for nicotine. The extraction process concentrates nicotine directly from the tobacco plant material without requiring synthetic additives or enhancement agents. The tobacco extract inherently contains nicotine in sufficient concentration for effective delivery, making the system self-sufficient and eliminating the need for additional chemical agents that could introduce harmful factors.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method achieves a tobacco extract with a nicotine content exceeding 1.5%, low levels of toxicants, and a shelf life of at least two years, effectively delivering nicotine and flavor without additional agents, while minimizing regulatory concerns.
Implementation Method 1
injecting the heated purified water through the granulated particles of the tobacco for a predetermined period of time to produce an aqueous solution
Implementation Method 2
heating the aqueous solution, and injecting the heated aqueous solution through ground tobacco
Data Source
AI summary
A method and a system for preparing a tobacco extract for use in an electronic smoking device are provided. A tobacco extract and an electronic smoking device are also provided. The method includes grinding tobacco into granulated particles, and heating purified water. The method further includes injecting the heated purified water through the granulated particles of the tobacco for a predetermined period of time to produce an aqueous solution, and adding purified water to the aqueous solution. Further, the method includes heating the aqueous solution, and injecting the heated aqueous solution through ground tobacco for the predetermined period of time to produce a tobacco extract for use in the electronic smoking device.