Technique of pre-expanding treating cabo

Abstract

A tobacco stalk pre-expending processing technics is provided, which is characterized in that: the technics comprises the following procedures: washing, storing, expanding in liquid and marinating with interface the tobacco stalk, expanding the stalk strips, moisture regaining and feeding, storing, pressing sticks and drying for shaping. The technics method of the invention changes the expanding of cut rolled stem into expanding the tobacco stick by using marinating with high temperature and low pressure and then expanding with high temperature and reduced preddure, thus sufficiently eliminating the bad flatus in the tobacco stick as the flatus of the wood or the corrupt straws; the tobacco stick after expanded has increased cells and remarkably enhanced ratio surface, thus the material liquid can filter into the tobacco sticks sufficiently to becoming a natural filling material and adaptation carrier for adjusting the cigarette fragrance and style; the cigarette stick after expanded is large in volume, which, after pressed, is easy being cut into silkiness (similar as the physical behavior of tobacco shred); after dried and shaped normally, the cut rolled stem can crisp naturally, thus increasing the filling capacity. The cut rolled stem processed by the technics method of the invention is basically similar with tobacco shred in color and shape and the alloying evenness of the tobacco shred is increased; besides, the tobacco shred has no bad aftertaste when smoking, but has strong filling capacity and enhanced internal quality.

Description

technical field

[0001] The invention relates to a treatment process of tobacco stems in the tobacco industry processing process, in particular to a pre-expansion treatment process of tobacco stems, that is, a process in which tobacco stems are soaked and expanded in related media before being processed. Background technique

[0002] Tobacco stem is an integral part of tobacco leaves, its weight accounts for about 25% of tobacco leaves, and its diameter is 3-5mm on average. It is composed of a large amount of lignin and cellulose and a small amount of sugar, nitrogen, nicotine and other substances. Li, Research on the formula of flavoring and adding ingredients to tobacco stems, Shanghai Tobacco Industry, 1995 (4), 18). For example, the total sugar content of cured tobacco stems is only about 1 / 2 of that of leaves, while that of Burley tobacco stems is about 1 / 2. %; the nicotine content of flue-cured tobacco stems is generally about 0.1-0.3%, while the nicotine content of Bur...

Examples

Embodiment 1

[0016] Feed the threshed and rebaked tobacco stems evenly into the stem washing machine, moisten the stems through the HT (tunnel tobacco stem moisture regainer), and send them to the storage cabinet for temporary storage by the belt conveyor, with a moisture content of 24% to 26%, 2-4 One hour later, the belt conveyor is fed into the liquid carbon dioxide expander (soaking time in liquid carbon dioxide is 7.5 to 15 minutes, and the soaking pressure is 3.5MPa to 4.0MPa, and then the tobacco stems formed into dry ice clumps are cooled at 330°C-380°C, 15 m / s-20 m / s of superheated steam), the soaked and expanded tobacco stems are fed with super-moisture feed from the vibrating tank at a moisture content of 4% to 6% and a temperature of 90°C to 100°C Machine, after feeding, the moisture content is 24%-26%, the temperature is 35°C-60°C, and it is temporarily stored in the stem storage cabinet. After 4-6 hours, it will be pressed into stems, shredded, dried and shaped, and then blend...

Embodiment 2

[0018] Feed the threshed and rebaked tobacco stems evenly into the stem washing machine, moisten the stems through the HT (tunnel tobacco stem moisture regainer), and then send them to the storage cabinet for temporary storage by the belt conveyor, with a moisture content of 20% to 25%, 2- After 4 hours, the belt conveyor is fed into the R134a expander (the soaking time in R134a is 7.5 to 15 minutes, and the soaking pressure is 0.5MPa, and then the tobacco stems formed into ice-like clumps are heated at 150°C-180°C, 15m / second-20 m / s of superheated steam), the soaked and expanded tobacco stems are fed into the feeder from the vibrating tank at a moisture content of 10% to 15% and a temperature of 90°C to 100°C. The rate is 22% to 27%, the temperature is 50°C to 60°C, and it is temporarily stored in the stem storage cabinet. After 4-6 hours, the stems are pressed, shredded, dried and shaped, and then blended with shredded leaves to form finished cut tobacco.

Embodiment 3

[0020] The tobacco stems after threshing and rebaking are evenly fed into the stem washing machine, moistened by the HT (tunnel tobacco stem moisture regainer), and then sent to the storage cabinet by the belt conveyor for temporary storage, with a moisture content of 24% to 26%, 2- After 4 hours, the belt conveyor is fed into the liquid nitrogen expander (the immersion time in liquid nitrogen is 7.5-15 minutes, the immersion pressure is 76MPa, and then the tobacco stems formed into ice-like clumps are cooled at 300°C-380°C, 15m / h s-20 m / s of superheated steam), the soaked and expanded tobacco stems are fed into the super moisture resurgence feeder from the vibrating tank at a moisture content of 4% to 6% and a temperature of 90°C to 100°C. Finally, the moisture content is 24% to 26%, and the temperature is 35°C to 60°C. It is temporarily stored in the stem storage cabinet. After 4-6 hours, the stems are pressed, shredded, dried and shaped, and then blended with shredded leaves...

technical field

[0001] The invention relates to a treatment process of tobacco stems in the tobacco industry processing process, in particular to a pre-expansion treatment process of tobacco stems, that is, a process in which tobacco stems are soaked and expanded in related media before being processed. Background technique

[0002] Tobacco stem is an integral part of tobacco leaves, its weight accounts for about 25% of tobacco leaves, and its diameter is 3-5mm on average. It is composed of a large amount of lignin and cellulose and a small amount of sugar, nitrogen, nicotine and other substances. Li, Research on the formula of flavoring and adding ingredients to tobacco stems, Shanghai Tobacco Industry, 1995 (4), 18). For example, the total sugar content of cured tobacco stems is only about 1 / 2 of that of leaves, while that of Burley tobacco stems is about 1 / 2. %; the nicotine content of flue-cured tobacco stems is generally about 0.1-0.3%, while the nicotine content of Bur...

Examples

Embodiment 1

[0016] Feed the threshed and rebaked tobacco stems evenly into the stem washing machine, moisten the stems through the HT (tunnel tobacco stem moisture regainer), and send them to the storage cabinet for temporary storage by the belt conveyor, with a moisture content of 24% to 26%, 2-4 One hour later, the belt conveyor is fed into the liquid carbon dioxide expander (soaking time in liquid carbon dioxide is 7.5 to 15 minutes, and the soaking pressure is 3.5MPa to 4.0MPa, and then the tobacco stems formed into dry ice clumps are cooled at 330°C-380°C, 15 m / s-20 m / s of superheated steam), the soaked and expanded tobacco stems are fed with super-moisture feed from the vibrating tank at a moisture content of 4% to 6% and a temperature of 90°C to 100°C Machine, after feeding, the moisture content is 24%-26%, the temperature is 35°C-60°C, and it is temporarily stored in the stem storage cabinet. After 4-6 hours, it will be pressed into stems, shredded, dried and shaped, and then blend...

Embodiment 2

[0018] Feed the threshed and rebaked tobacco stems evenly into the stem washing machine, moisten the stems through the HT (tunnel tobacco stem moisture regainer), and then send them to the storage cabinet for temporary storage by the belt conveyor, with a moisture content of 20% to 25%, 2- After 4 hours, the belt conveyor is fed into the R134a expander (the soaking time in R134a is 7.5 to 15 minutes, and the soaking pressure is 0.5MPa, and then the tobacco stems formed into ice-like clumps are heated at 150°C-180°C, 15m / second-20 m / s of superheated steam), the soaked and expanded tobacco stems are fed into the feeder from the vibrating tank at a moisture content of 10% to 15% and a temperature of 90°C to 100°C. The rate is 22% to 27%, the temperature is 50°C to 60°C, and it is temporarily stored in the stem storage cabinet. After 4-6 hours, the stems are pressed, shredded, dried and shaped, and then blended with shredded leaves to form finished cut tobacco.

Embodiment 3

[0020] The tobacco stems after threshing and rebaking are evenly fed into the stem washing machine, moistened by the HT (tunnel tobacco stem moisture regainer), and then sent to the storage cabinet by the belt conveyor for temporary storage, with a moisture content of 24% to 26%, 2- After 4 hours, the belt conveyor is fed into the liquid nitrogen expander (the immersion time in liquid nitrogen is 7.5-15 minutes, the immersion pressure is 76MPa, and then the tobacco stems formed into ice-like clumps are cooled at 300°C-380°C, 15m / h s-20 m / s of superheated steam), the soaked and expanded tobacco stems are fed into the super moisture resurgence feeder from the vibrating tank at a moisture content of 4% to 6% and a temperature of 90°C to 100°C. Finally, the moisture content is 24% to 26%, and the temperature is 35°C to 60°C. It is temporarily stored in the stem storage cabinet. After 4-6 hours, the stems are pressed, shredded, dried and shaped, and then blended with shredded leaves...

Images