ITRM970690A1 - PLANT FOR TANNING THE TRICATO TOBACCO (LEAF AND RIB) AND THE FRASAMI, LEAF PARTICLES HAVING EQUAL DIMENSIONS OR LESS THAN 5 MM, RESIDUES FROM THE PROCESSING OF TOBACCO LEAVES OF ANY VARIETY TYPE AND DEGREE - Google Patents

Description

TITLE

"Plant for tanning chopped tobacco (leaf and rib) and frasami, leaf particles having dimensions equal to or less than 5 mm, residues from the processing of tobacco leaves of any variety, type and grade".

SUMMARY

The object of the present invention is a new plant for tanning chopped tobacco (leaf and rib) and frasami, leaf paiticelle having dimensions equal to or less than 5 mild, residues from the processing of tobacco leaves of any variety, type and degree whose effect it is to reduce the formation of balls or blocks of wet tobacco which are obtained by introducing the aforementioned tobacco into the plants currently in use used to cure the tobacco; this happens because the tobacco crosses regret vertically with a reduction in contact with the areti which, being hot and continuously cleaned by the fluids introduced, do not allow the tobacco to stick to the internal walls of the plant The spraying of the tanning liquid and of the steam and of the others necessary fluids takes place from the side walls of the hollow profile through which the abacco passes while other fluid is introduced immediately before the upper section of this profile to regulate the permanence of the tobacco in the plant. of cigarettes.

DESCRIPTION

The new plant allows to tan:

A. leaf particles having dimensions equal to or less than 5 mm, residues from the processing of tobacco leaves of any variety, type and grade so as to allow their use in the production of cigarettes;

B. the cut tobacco coming from the processing of the leaves and the ribs, so as to increase the tobacco surface exposed to the spraying of the tanning.

phrases indicated in the title are those coming from factories where the tobacco leaves are sorted and / or beaten to divide the leaf edges from the ribs. During the operations of sorting the leaves and beating them, used to separate the ribs from the edges foliar, there are as by-products the phrases that can be divided into:

scraps. leaf flaps that pass through sieves with holes with a diameter equal to Siam or meshes with a side equal to 5 mm. about 65 meshes per cm 2 or 20 mesh see pag. F-447 New Colombo Engineer Manual 81 edition;

fines, leaf flaps that pass through sieves with holes with a diameter of 5mm or meshes with a side equal to 3 mm. about 140 meshes per cm 2 or 35 mesh see p. F-447 New Colombo Engineer Manual 81 edition;

dust collected in the part below the aforementioned screens.

Water-based tanning liquids are obtained by mixing water and other non-volatile substances, for example: sugar, licorice, cocoa, vegetable extracts, ctc. These liquids are intended to improve the organoleptic characteristics of the smoke resulting from the combustion of tobacco. The spraying of tanning liquids currently takes place in the following types of plants:

n a rotating cylinder in which the tobacco advances as a result of its rotation around an axis inclined with respect to the support plane of the cylinder itself; the tanning liquids are sprayed on the tobacco by means of suitable nozzles, water injected steam is sprayed into the cylinder at the same time in order to moisten and heat the tobacco so as to favor the absorption of the tanning by the leaf limbs.

in augers in which the tobacco advances following the worm; the tanning liquids are sprayed on the tobacco by means of suitable nozzles, water is simultaneously sprayed into the auger and steam is injected in order to moisten and heat the tobacco so as to favor the absorption of the tanning by the leaf limbs.

. in covered vibrating conveyors in which the tobacco advances as a result of vibrations; the tanning liquids are sprayed on the tobacco by means of suitable nozzles, at the same time water is sprayed into the vibrating conveyor and steam is injected in order to moisten and heat the tobacco so as to favor the absorption of the tanning by the leaf edges.

For the production of cigarettes, at present, leaf edges with dimensions greater than 5 mm are used as those of smaller dimensions cannot be tanned, in fact if in this phase of the processing also the scraps and fines were introduced. to the walls of the cylinder of the auger of the vibrating conveyor forming, with the passage of time, balls or blocks of very humid tobacco which would cause damage to the subsequent processing steps; for the same reason, the tanning liquid cannot be sprinkled on the already chopped tobacco. The purpose of the present invention is to make available to cigarette or semi-finished tobacco manufacturers a new tanning spraying system - so as to be able to use even the flaps of tobacco leaves in the mixtures - having a size of less than 5. mm, so as to reduce the cost of the tobacco blends used for the production of cigarettes by introducing the scraps and fines into these, and to improve the action of the tanning liquid inorating it not on the edges of leaves but on the chopped tobacco (leaf and / or ribs) since doing so at equal weight of treated tobacco increases the surface of the tobacco exposed to spraying. The difference of this plant compared to those currently in use consists in the fact that the tobacco crosses the plant vertically and therefore the possibility of formation of tobacco balls or blocks is reduced; as a secondary advantage you can have a swelling of the tobacco and hence an increase in the filling power of the tobacco itself.

These and other purposes are achieved by the system it includes.

1 a motorized valve that allows the passage of tobacco without putting the subsequent components of the system in free communication with the atmosphere; the size of this valve is determined according to the quantity of tobacco to be treated.

Γ. connection between the valve and the subsequent hollow profile;

11. a hollow profile of any section sized according to the quantity of tobacco to be treated. This profile, connected to the valve referred to in point 1, has a vertical axis or the tobacco to be treated passes through it.

/. the steam, air and tanning liquid supply circuits.

the necessary electrical circuits.

at inlets provided on the lateral surface of the hollow section and on the upper circumference of the section itself or on the connection provided between the valve and the section, steam and the tanning liquid and air can be introduced. The steam is introduced at a relative pressure between 98.0655 * 100 and 98.0655 * 10000 Pa (0.1-10 At); the air is introduced at a relative pressure between 98.0655 * 100 and 98.0655 * 10000 a (0.1-10 At) and at a temperature between 10 and 120 ° C; the tanning liquid is introduced at a relative pressure between 98.0655 * 100 and 98.0655 * 10000 Pa (0.1-10 At) and at a temperature between 10 and 120 ° C. The residence time of the tobacco inside the treatment system ranges from 0.01 to 60 sec. The tobacco passing through the profile is hit by the fluids introduced, the steam and the hot air which give heat to the tobacco which at the same time absorbs the tanning liquids. The tangential introduction of part of said fluids always keeps the internal surface of the system clean and therefore there is no formation of balls or blocks of tobacco.

Latest features and advantages of the invention will result from the following description of a preferred but not exclusive embodiment of the system illustrated by way of indication but not limitation in the two attached drawings:

1. The star valve allows the entry of tobacco by preventing the entry of ambient air into the profile,

2. Connection strip between the star valve and the hollow profile;

3. Hollow profile of circular section: slots have been made on the lateral surface of the profile to allow the remixing of the fluids used in the process through holes made in the pipes referred to in point 4 below;

4. All perforated holes welded on the hollow profile. Through these pipes it is possible to introduce part of the fluids used in the process; one part of the holes of each of the ducts have the jet directed towards the center of the hollow profile. while the other part has the jet tangential to the hollow profile referred to in point 3 with clockwise and anticlockwise direction in order to keep clean the lateral surface of the latter and to prevent rotary movement always in the same 5. direction as the tobacco since such a type of movement could create agglomeration of the tobacco and therefore the formation of balls or blocks; 6. Connection flanges between the hopper referred to in point 2 to the hollow profile referred to in point 3 and the connection of the pipes referred to in point 4 to the supply circuits of the fluids used. The fluids used are also introduced through these flanges. The holes present on these flanges have their axis arallel to the axis of the hollow profile referred to in point 3 By regulating the pressure of the fluids, the permanence of the tobacco in the system is regulated. , The tanning liquid can be introduced directly into the profile or through suitable nozzles placed on the side wall of the profile and / or on the connection between it and the star valve and / or mixed with the steam giving the hot air. profiled, a system can be provided for the separation of the tobacco from the hot fluids and their subsequent capture. By adjusting the pressure of the injection and therefore the temperature of the fluids used, it is possible to have an increase in the filling power of the treated mixture due to swelling of the tobacco particles. The plant thus conceived is susceptible of numerous modifications and variations, all falling within the scope of the inventive concept. Furthermore, all the details can be replaced with other technically equivalent ones.

Claims (1)

ivendicazimi . New plant for tanning chopped tobacco (leaf and rib) and frasami, leaf particles having dimensions equal to or less than 5 mm, residues from the processing of tobacco leaves of any variety, type and grade whose effect is to reduce the formation of balls or blocks of moist tobacco obtained by introducing the aforementioned tobacco into the plants currently in use, use them to cure the tobacco; this happens because the tobacco passes through the plant vertically with a reduction in contact with the walls which, being hot and continuously cleaned by injected fluids do not allow the tobacco to stick to the internal walls of the plant. The spraying of the tanning liquid and of the steam and of the other necessary fluids takes place from the side walls of the hollow profile through which the tobacco passes while other fluid is introduced immediately before the upper section of this profile to regulate the permanence of the tobacco in the plant. plant consists of: to. a star valve that allows the passage of tobacco without putting the subsequent components of the system in free communication with the atmosphere, the size of this valve is determined according to the quantity of tobacco to be treated. b. connection between the valve and the subsequent hollow section, the size of this connection is determined according to the quantity of tobacco to be treated; c. a hollow profile of any section sized according to the quantity of tobacco to be treated. This profile, connected to the valve referred to in point 1, has a vertical axis and the tobacco to be treated passes through it. d. series of hollow profiles of any section welded on slots made on the profile referred to in point three. The diameter of these pipes depends on the quantity of tobacco to be treated. These profiles are perforated; hole diameter ranging from 0.1 to 5mm; the number of holes and their diameter are determined according to the quantity of tobacco to be treated part of these holes have direct taxes towards the center of the profile referred to in point 3. center of the profile referred to in point 3. And. perforated flanges through which the fluids used pass; f. the steam, turi and tanning liquid supply circuits. g. At the outlet of the profile, a system for separating the tobacco from the hot fluids and their subsequent capture can be provided. From holes provided on the profiles referred to in point d) welded on the lateral surface of the hollow section and on the upper circumference of the section itself, through the flanges referred to in point e, steam and tanning liquid and air or other can be introduced fluid. The steam is introduced at a relative pressure between 98.0655 * 100 and 98.0655 * 10000 Pa (0.1-10 At); Air or other fluid is introduced at a relative pressure between 98.0655 * 100 and 98.0655 * 10000 Pa (0.1-10 At) and at a temperature between 10 and 120 ° C; the tanning liquid is introduced at a relative pressure between 98.0655 * 100 and 98.0655 * 10000 Pa (0.1-10 At) and at a temperature between 10 and 120 ° C. The residence time of the tobacco inside the treatment system ranges from 0.01 to 60 sec. The tobacco passing through the profile is hit by the fluids introduced by the steam and hot paria which give heat to the tobacco which at the same time absorbs the tanning liquids. The tangential introduction of part of said fluids always keeps the internal surface of the profile referred to in point c) clean and therefore there is no formation of tobacco balls or blocks. New plant for tanning chopped tobacco (leaf and rib) and frasami, leaf particles having dimensions equal to or less than 5 µm, residues from the processing of tobacco leaves of any variety, type and grade according to the preceding claims, in which the star valve is replaced by another valve having the same purpose. New plant for tanning the shredded tobacco (leaf and rib) and the between sami, leaf particles having dimensions equal to or less than 5 mm, residues from the processing of tobacco leaves of any variety, type and grade according to the preceding claims, in which the fluids are not fed through the flanges but another equivalent system; New plant for tanning the shredded tobacco (leaf and rib) and the frasami. Leaf particles having dimensions equal to or less than 5 mm, residues from the processing of tobacco leaves of any variety, type and grade. According to the preceding claims, in which the fluid is introduced into the hollow profile as per point c of claim A) through holes made directly on the profile and therefore with a different fluid supply system;