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Method for directionally lowering tobacco tar

A technology for tar and tobacco, which is applied in the field of reducing harmful tar of tobacco by supercritical fluid technology, can solve the problems of low energy, insufficient aroma, dull smoke, etc., and achieves the effects of less scrap material consumption, environmental friendliness and simple process

Inactive Publication Date: 2004-12-22
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such tar reduction can reduce some harmful ingredients, but it also reduces the aroma-causing ingredients compared with the same period last year, so that the aroma, taste and strength of cigarettes will be lost.
The smoke tastes flat, the aroma is insufficient, and the energy is too low, which cannot meet the physiological requirements of consumers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1). The extractor is loaded with 2Kg of raw cut tobacco. Supercritical carbon dioxide enters from the bottom and flows out from the top. The control pressure is 28MPa, and the temperature is 50°C.

[0018] (2). Flowing out from the extractor, the supercritical carbon dioxide containing cut tobacco extract enters a 4-stage rectification and separation tower equipped with activated carbon. The pressure of the rectification and separation tower is controlled to be 16Mpa, and the temperature is respectively 50, 60, 70, and 80°C.

[0019] (3). The supercritical carbon dioxide flowing out of the rectification separation tower is boosted to 28MPa, and then returned to the extractor after cooling down, and the cycle works for 4 hours.

[0020] (4). Lower the temperature of the extractor to 20°C, lower the pressure, and empty it to obtain the finished shredded tobacco.

Embodiment 2

[0022] (1). The extractor is loaded with 2Kg of raw cut tobacco. Supercritical carbon dioxide enters from the bottom and flows out from the top. The control pressure is 28MPa, and the temperature is 50°C.

[0023] (2). Flowing out from the extractor, the supercritical carbon dioxide containing cut tobacco extract enters a 2-stage rectification and separation tower equipped with diatomaceous earth. Control the pressure of the rectification and separation tower to 20Mpa, and the temperature to 60 and 80°C respectively.

[0024] (3). The supercritical carbon dioxide flowing out of the rectification separation tower is boosted, cooled and returned to the extractor, and the cycle works for 3 hours.

[0025] (4). Lower the temperature of the extractor to 20°C, lower the pressure, and empty it to obtain the finished shredded tobacco.

Embodiment 3

[0027] (1). The extractor is loaded with 2Kg of raw cut tobacco. Supercritical carbon dioxide enters from the bottom and flows out from the top. The control pressure is 28MPa, and the temperature is 50°C.

[0028] (2). Flowing out from the extractor, the supercritical carbon dioxide containing cut tobacco extract enters the 3-stage rectification and separation tower equipped with stainless steel mesh. The pressure of the rectification and separation tower is controlled to be 12Mpa, and the temperature is respectively 40, 60, and 80°C.

[0029] (3). The supercritical carbon dioxide flowing out of the rectification separation tower is pressurized and cooled and then returned to the extractor, and the cycle works for 5 hours.

[0030] (4). Lower the temperature of the extractor to 20°C, lower the pressure, and empty it to obtain the finished shredded tobacco.

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PUM

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Abstract

A method for directionally reducing the tar of tobacco includes such steps as supercritical CO2 extracting of tobacco shreds, rectifying and adsorbing to remove harmful tobacco components and precursors of harmful tobacco gas, and returning its useful flavouring components to tobacco shreds by supercritical CO2. Its advantages are simple process, high effect and low cost.

Description

Technical field: [0001] The invention belongs to a method for reducing tobacco tar, in particular to a method for reducing harmful tobacco tar by supercritical fluid technology. Background technique: [0002] Smoking and health are concerned all over the world. Tobacco technology has initially revealed that the harmful components in the tar of cigarettes are one of the main substances that endanger the health of smokers. Reducing the release of harmful components in cigarette smoke and improving the safety of smoking cigarettes is an urgent problem in the development of the current cigarette industry. question. According to the current research results, 99.4% of the found cigarette smoke components are harmless to the human body, most of which are tobacco aroma substances, and only 0.6% of the components are harmful, and among the 0.6% of the harmful components, only 0.2% are carcinogenic and possibly carcinogenic ingredients. The amount of tar in cigarettes is affected b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24B15/28
Inventor 侯相林王国富杜俊民乔欣刚胡军
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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