Method for treating tobacco leaves through subscritical liquid

A subcritical fluid and tobacco technology, applied in tobacco, tobacco preparation, application, etc., can solve the problems of cigarette aroma, taste, loss of strength, failure to meet the physiological requirements of consumers, and addition of harmful substances, etc., to achieve low production and operation costs , excellent refrigeration effect, and the effect of improving the internal quality

Inactive Publication Date: 2006-04-19
YUNNAN REASCEND TOBACCO TECH GRP
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0007] The above-mentioned technologies have the following defects and deficiencies: each technology can only deal with one harmful component in tobacco, and cannot treat two or more harmful components in tobacco at the same time, and cannot simultaneously puff tobacco. Most of the technically processed tobacco aroma components and reducing sugars are denatured or severely lost, resulting in a serious loss of cigarette aroma, taste and strength, which cannot meet the physiological requirements of consumers; at the same time, harmful substances are added

Method used

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  • Method for treating tobacco leaves through subscritical liquid

Examples

Experimental program
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Effect test

Embodiment 1

[0020] The first step, selective removal of nicotine and nitrosamines: put 100kg of tobacco with a moisture content of 15% into the extraction kettle 1, close valves 2, 3, 4, 5, 6, 7, and 23 and open the remaining all valves, start the vacuum pump 8 to extract the air in the system, close the high vacuum butterfly valve 9, close the pressure reducing valves 10, 11, open the valves 2, 3, 5 and start the metering pumps 12, 13, put the liquid dimethyl ether storage tank 14 The subcritical fluid formed after efficient mixing of dimethyl ether in the auxiliary agent storage tank 15 and the auxiliary agent mixed with alkalinizing agent and solubilizer in the auxiliary agent storage tank 16 is heated to 20°C through the exchanger 17, and then pressed into the extraction In kettle 1, adjust the subcritical fluid flow rate to 0.4kg / min, pressure to 0.5Mpa, pH value to 9, open pressure reducing valve 11, adjust separation temperature to 20°C, pressure to 0.1Mpa, and subcritical fluid to ...

Embodiment 2

[0026] The technical process of this embodiment is the same as that of Example 1. 100 kg of tobacco with a moisture content of 25% is put into the extraction kettle 1, and after the vacuum pump 8 is started to remove the air in the extraction kettle 1, subcritical tobacco is required for every 1 kg of tobacco. The fluid is 2kg / min, the flow rate is controlled, the extraction temperature is 60°C, the pressure is 1.5Mpa, and the pH value is 10. Under the process conditions of a temperature of 40°C and a pressure of 0.25Mpa, nicotine and nitrosamines are separated from the gas in the separation tank 18 to be removed. Remove, cycle treatment time 45 minutes; With the gas decompressed through pressure reducing valve 10, control pressure 0.25Mpa and spray in the extraction kettle 1, the tobacco in the extraction kettle 1 is refrigerated; When the tobacco temperature in the extraction kettle 1 is cold to At -40°C, start the vacuum compressor 21 to evacuate the extraction kettle 1, con...

Embodiment 3

[0030] The technical process of this embodiment is the same as that of Example 1. 100 kg of tobacco with a moisture content of 35% is put into the extraction kettle 1, and after the vacuum pump 8 is started to remove the air in the extraction kettle 1, subcritical tobacco is required for every 1 kg of tobacco. The fluid is 4kg / min, the flow rate is controlled, the extraction temperature is 90°C, the pressure is 3Mpa, and the pH value is 11. Under the technological conditions of a temperature of 60°C and a pressure of 0.5Mpa, nicotine and nitrosamines are separated from the gas in the separation tank 18 and removed , the cycle treatment time is 90 minutes; the gas decompressed through the pressure reducing valve 10 is sprayed into the extraction kettle 1 at a control pressure of 0.5Mpa, and the tobacco in the extraction kettle 1 is refrigerated; when the temperature of the tobacco in the extraction kettle 1 is cold to- At 60°C, start the vacuum compressor 21 to evacuate the extr...

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Abstract

A process for treating tobacco leaves by subcritical fluid includes such steps as regulating such parameters of subcritical fluid as 0.4-4 kg / min for flow, 20-90 deg.C and 20-60 deg.C for extracting temp and separating temp, 0.5-3 MPa and 0.1-0.5 MPa for extracting pressure and separating pressure, and pH=9-11, selectively removing harmful components, vacuum recovery of medium while refrigerating to -20¿D-60 deg.C, and puffing by filling saturated steam. Its advantage is less loss of flavouring components and reducing sugar.

Description

technical field [0001] The invention belongs to a method for treating tobacco, in particular to a method for treating tobacco with a subcritical fluid. Background technique [0002] "Reducing tar and reducing harm" has been identified as the general idea of ​​China's tobacco science and technology work. How to reduce the tar content, reduce the health hazards of smoking to consumers, and minimize the impact of tar reduction on the cigarette market has become a key issue for the Chinese tobacco industry. Cultivating "low tar, low harm, high aroma" Chinese cigarette brands is an urgent problem to be solved. Especially after China joined the "Framework Convention on Tobacco Control" on November 10, 2003, this problem has become more and more prominent. [0003] Chinese Patent Application No. 90106894.2 discloses a tobacco processing method. The method contacts an aqueous tobacco extract with ammonia to increase the pH of the aqueous tobacco extract to 9 or above, allowing it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B3/18A24B3/04
Inventor 罗波侯金荣侯金春侯金华
Owner YUNNAN REASCEND TOBACCO TECH GRP
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