SU661994A3 - Method of processing tobacco - Google Patents

Description

one

The invention relates to methods for treating tobacco to increase its filling capacity.

A method of treating tobacco is known, namely, qto tobacco is impregnated with vapors of an organic compound having a boiling point in the range of 64-10 ° C, and then dried Lll.

However, the known method does not provide a sufficiently high filling capacity of tobacco.

The aim of the invention is to increase the filling capacity of tobacco.

The goal is achieved by the proposed method of processing tobacco, which consists in the fact that tobacco is treated with vapors of an organic compound, for example trichloromonofluoromethane, having a boiling point at atmospheric pressure from -5 d6 +80 C to a content of 5-200 wt. including organic compound per 10O weight. of tobacco (based on dry weight), followed by drying it with a hot gas having a temperature of at least 18 ° C and preferably 8 ° C above the boiling point of the impregnating compound.

Tobacco, which is treated with a pre-. It is preferably a substantial tobacco of any kind, and may be in the form of pieces, strips, leaves, or stems.

The organic compound used to impregnate tobacco is chemically inert with respect to tobacco and has a boiling point of from -5 to. In Ka "jecTBe organic compounds, ketones, aliphatic or cyclic ethers, aliphatic alcohols, ethers of aliphatic hydrocarbons, cycloaliphatic hydrocarbons, halohydrocarbons can be used.

Solids are non-oxidizable compounds that are relatively incomplete in their natural state and do not interbreed with water. WATER steam can be used as a hot gas. The proposed method allows an increase in the tobacco filling capacity. Example. A 500-gram sample of smoked, dried tobacco with a moisture content of 20% was placed in a 4.8-liter high-capacity steel tank equipped with a wire strainer to support the tobacco above the bottom of the tank. The tank was evacuated and 27 g of liquid hexane, a boiling point of 69 ° C) was introduced into the bottom of the tank through a valve. The tank was then stirred into a bath of hot water maintained at a temperature of between 70 and 80 ° C for a time allowing the impregnation of tobacco with hexane vapor. Then the tank was removed from the water bath and allowed to cool to approximately room temperature, at which time the pressure in the bath was not 250 mm Hg. absolute). In terms of the final pressure and the volume of the tank, it was determined that the amount of hexane vapor required to fill the tank should be about 6.5 g, the amount of hexane in tebac is about 22.5 g, which corresponds to 5.5 weight. including hexane per 100 weight. h; tobacco per dry tobacco. The impregnated tobacco was removed from the high-pressure tank and introduced into a horizontally located cylindrical pipeline, 7 m long, through which hot gas, containing a mixture of water vapor and air, having a temperature of about 150 ° C, was passed. Tobacco was moved through the pipeline with a stream of hot g and left in contact with hot gas for approximately 2 to 5 seconds. The tobacco was collected on exit from the pipeline and then stored in a chamber having a constant 62% relative humidity until the moisture content of the tobacco reached equilibria. Comparison of the capacity of hexane-treated tobacco with the filling capacity of a KOHI rolling sample revealed a 32% increase in filling capacity for hexane-treated tobacco. : PRI mme R 2. 172-gbmmovy obra. A flask of Essential Tobacco, having a moisture content of 2.5%, was placed in a 2-liter flask and tightly sealed with a cork, together with a clap pan attached to it. A flask containing tobacco, an evacuator with the help of a valve, and a valuo-muted flask with an extractor valve were stored at 15 ° C until the tobacco was carefully cooled. Butane (15O.G, TO4jca boiling -0.5 ° C) was introduced into the evacuated flask through the valve, and the closed flask was then kept at 0 ° C for several hours to allow the tobacco to be uniformly soaked with butane vapor. The amount of butane in tobacco was approximately 115 parts by weight. butane per 100 weight.h. tobacco (in terms of dry tobacco). The impregnated tobacco was then removed from the cold flask and injected into the hot gas stream, as described in Example 1, except that the hot gas temperature was 130 ° C, instead of 150 ° C. After equilibrium was reached, the tobacco treated with butane had a filling 84% higher capacity than filling capacity of a control sample having the same moisture content. Example 3. A 50 g sample of shredded dried tobacco having a moisture content of about 12% was suspended in a laboratory glass flask containing 75 g of liquid trichlorofluoromethane (boiling point 24 (Z) at the bottom of the glass. Then Staxn was closed and held at a temperature of approximately 25 G for several hours to allow the tobacco to be thoroughly soaked in organic vapors. The amount of impregnating agent in tobacco was approximately 170 parts by weight of trichloro-monofluoromethane per 100 parts of tobacco. a (in terms of dry tobacco). Impregnated tobacco was then removed from the glass and contacted with a mixture of water vapor and air at 4 ° C. The total time of contact of tobacco with a mixture of water vapor was 1 minute. g in tobacco was regulated by placing it in a chamber with a constant humidity of 62% until equilibrium moisture content was reached. Measurements of the filling yaschey ability showed an increase of 20.3% for processed tobacco compared to the untreated control sample having the same Oder circuiting of moisture. . Example 4: Example 3 was repeated, except for her; that the impregnated tobacco was in contact with a mixture of water vapor and air having a temperature of 5 ° C for 30 seconds. After equilibrating moisture, the trichloroformethane-treated tobacco had a filling capacity of 52% above, 5,. : 6 than the filling capacity of the control sample. Froze A 50 gram sample of shredded dried tobacco, having a moisture content of about 1% S, was suspended in a glass beaker containing 31 g of liquid pentane (boiling point 36 ° C) at the bottom of the glass. The beaker was then tightly closed and slightly heated to allow the tobacco to be thoroughly soaked in pentane vapor; The amount of impregnating agent in the gabac was about 7 parts by weight. pentane per 100 weight parts. tobacco (in terms of dry weight). The impregnated tobacco was then removed from the beaker and contacted with a mixture of water vapor and air having a temperature of 55 ° C. The total contact time with the mixture of water vapor and air was 30 seconds. The moisture content of the tobacco was adjusted by placing the tobacco in a chamber with a constant relative humidity of 62% until equilibrium was reached. Measurement of filling capacity showed an increase in filling capacity of 18.7% for tobacco treated with pentane compared with the untreated control sample with the same moisture content. Example 6, Example 6 was repeated, with the exception of a burner, that impregnated tobacco was brought into contact with a mixture of water vapor and air having a temperature of 85 C. After equilibration of moisture, the tobacco treated with pentane had a filling capacity of 69.9% more than the control sample. PRI me R 7. A 40-gram sample of crushed, dried tobacco, having a moisture content of 20%, was placed in a 1-liter flask with three necks. A weak stream of hot four-carbon carbon vapor was passed through the flask for 3 hours, during which the temperature of the tobacco was in the B-TT-C range, determined by a thermocouple introduced into a 94 tightly packed tobacco sample. The amount of carbon tetrachloride introduced into tobacco as a result of this exposure to hot vapor at atmospheric pressure was not determined. However, the amount of clearly boosted 5 weight. hours per 100 weight. including dry tobacco. The impregnated tobacco was then treated with superheated steam at 150 ° C for 5 minutes to expand the tobacco. The moisture content of the expanded tobacco was adjusted by keeping the gabac in a chamber having a constant relative humidity of 62% until that moisture balance was reached. The filling capacity of the treated tobacco was measured and found to be 37% higher than the filling capacity of a control sample having the same moisture content. This is an example of how an increase in the filling capacity of tobacco impregnated with various organic compounds was obtained using hot gas having a temperature of about 18 ° C above the boiling point of the impregnating compound. The experiment involved the impregnation of shredded dried tobacco with organic liquid in a closed container for about 4 hours. The impregnated tobacco was then exposed to a stream of gas heated to the desired temperature. This gas flow consisted of water vapor and compressed air mixed in appropriate ratios and giving the desired temperature; the contact time was approximately 30 seconds. The processed tobacco was then stored in a chamber having a constant relative humidity of 62% until the moisture content of the gabac reached equilibrium. The increase in tobacco filling capacity is then determined by comparison with the untreated control sample. Results are given in / table.

6619948

Table continuation

Claims (1)

Formula from found and. A method of treating tobacco with an organic compound followed by drying, characterized in that, in order to increase the filling capacity of tobacco, organic compound is used as an organic compound having a boiling point of from -5 to +80 ° C, for example trichloromefluoromethane, impregnation is carried out 5-200 parts by weight, organic compound per 100 parts by weight tobacco (calculated on dry weight), and drying is carried out with hot gas, having a temperature of at least 18 ° C, preferably 8 ° C, above the boiling point of the impregnating compound. Information sources; taken into account in the examination 1. US patent No. 3144871, class, 131-40, 1964.