DE1669561B2 - METHOD AND DEVICE FOR CARBONIZING WOOL - Google Patents

Description

The invention relates to a method and a device for the co-continuous carbonization of wool, in which the wool is wetted with acid, then dehydrated, dried and heated to firing temperature, then opened and / or tapped and then the acid adhering to the fibers is neutralized. during firing, the air heated to the firing temperature by means of induced draft through the on a curved Underlay adhesive wool is passed, according to patent application P 14 94 549.4. The invention is in various Working stages of wool applicable, d. H. with raw wool, in the top or card sliver, in the yarn and in the Piece. Sulfuric acid in particular is used to acidify the wool.

In the main application it is shown that the carbonization of the wool can be significantly shortened can if the heated air is sucked through the wool. The shorter and a much weaker acid effect on the wool causes a significant increase in quality. The other Any harmful influences that occur are significantly reduced with this method. Notable fluid losses The wool fibers now no longer appear, and the dyeing capacity is much better and given significantly lower chemical costs. because less acid and fewer alkalis to neutralize the acid are needed.

The invention is based on the object of the carbonizing process described in the main application and to further improve the carbonation devices used for this purpose.

This object is achieved according to the invention. that the wool with a press before souring hard rollers and high pressure are used to remove burdock and burdock crusts and other larger pieces of cellulose to crush and thereby facilitate their acid absorption. A very favorable acid intake results, for example, when the wool is pressed with a line pressure of about 120 kg / cm and the press rolls are wrapped with hard ropes, preferably synthetic ropes, e.g. B. can for it a nylon rope can be used.

The carbonation process according to the invention can

also cheap for card slivers and cam belt slivers be applied. For this purpose, it is proposed to line up a number of such belts parallel to a web of material and then to line up this web of material to go through the individual treatment processes. Accordingly, piece goods can also be carbonized cheaply will. In order to remove the carbonized components in piece goods, it is proposed that the material web to press to further crush the carbonized ingredients, and then in a fluttering motion to move, whereby the ground, carbonized components are more easily detached from the material web.

A device for the continuous implementation of the method according to the invention in piece goods. According to the invention, top and card slivers consist of a combination of the following individual units:

a) a take-off device for Karien and Kammzug belts or an infeed boom with a spreader for tissue,

b) a take-off or press work with hard press rolls or hard press roll cover.

c) at least one suction drum bath for acidifying the wool with a downstream press,

d) a sieve drum dryer, which is divided into a drying and a firing chamber, or two Sieve drum dryers, the first used for drying and the second used for firing will,

e) if necessary, a device for removing the carbonized components - this device is not absolutely necessary for fabrics, slivers and card slivers, as the carbonized ones Components are also removed from the wool by the subsequent treatment units can be -,

f) suction drum baths with downstream press for rinsing and neutralizing,

g) a sieve drum dryer,

h) a winding or depositing device,

i) a common regulation and control device for the aforementioned units.

It is beneficial if the acid bath for wetting the wool is preceded by a further suction drum bath with a press will. However, it is also possible to use both baths for acidification.

A friction mechanism with several pairs of rollers can be connected downstream of the combustion chamber for crushing and removing the carbonized components. In the case of piece goods in particular, however, it is more advantageous to connect a device downstream of the combustion chamber for comminuting and removing the carbonized components, which device has a pair of rollers for guiding the fabric at the inlet and outlet. at least the pair of infeed rollers is designed as a press with hard press rollers. The material web should float freely between these two roller pairs and it should be assigned at least one element above or below it, which causes the material web to flutter. This element may expediently consist of a rotating Blasdüsenrohr which has several rows of blowing nozzles ^h0. In addition, a cover should be provided which only allows air to escape in the direction of the material web. This element, which causes the web of material to flutter, can, however, also consist of a rotatably mounted star-shaped or nozzle-shaped part which comes into contact with the goods with its arms and thereby causes the fluttering movement. In order to avoid grinding of the arm ends on the goods, it is proposed to arrange rotatably mounted rollers on the arm ends coming into contact with the goods. A suction device can be assigned to this device in order to remove the comminuted, carbonized components. This can e.g. B. be designed as a suction hood.

Two embodiments of the invention Device are shown in the drawing. It shows

F i g. 1 shows the schematic structure of a continuously operating carbonation system for tops or Card slivers,

F i g. 2 shows the schematic structure of a continuously operating carbonation system for tissue.

The system according to FIG. 1 has a take-off device 1, which pulls the top slivers or card slivers 2 is withdrawn from cans 3 and arranged to form a web of material via a rake-like part 4 in a pressing unit 5 feeds. The card slivers 2 then pass through two suction drum baths 6 and 7, which are known in their structure, the suction drum bath 6 for wetting the top or card slivers and the suction drum bath 7 serves to acidify the web. A sieve drum dryer is used to dry the top or card slivers 2 8 provided with screen drums 9 under suction. The screen drum dryer 8 is through a transverse wall 10 is divided into a drying chamber 11 and a combustion chamber 12. It's cheap, though drying takes place at around 80 to 90 ° C and the air temperature during firing is around 150 ° C. The number of sieve drums is only given for example with 4 drums, depending on the size of the desired production also a larger number or a smaller number of screening drums for use reach.

The top or card slivers 2 then pass through a friction mechanism equipped with pairs of rollers 14 13, in which the carbonized components are crushed and for the most part already from the Wool to be removed. The subsequent suction drum baths 15 are used to neutralize and rinse the Material, which is then dried on a sieve drum dryer 16 and by means of a depositing device 17 can be deposited again in cans 3.

The suction drum baths as well as the sieve drum dryer work in a known manner with constant circulation of the treatment medium by, for example a pump or a fan is assigned to the front side of the screening drums, which or which the The sieve drum is set under suction and the treatment medium sucked out of the sieve drum into the treatment room promotes back.

The device according to FIG. 2 is similar to the device of FIG. 1 built. The same aggregates are therefore also named with the same numbers. This device has a pull-off boom at the inlet 18 with expansion devices, which the fabric 19 as a roll 20 or as a flattened stack can be presented. At the end of the system, a take-up stand 26 is provided in this embodiment. However, it is also possible to remove the material in the fold position by means of a fold layer. To the A device 21 consisting of two pairs of rollers is used to remove the carbonized components from the fabric 22 viewed, of which at least the front pair of rollers is designed as a pair of press rollers. These The device also has a blow nozzle tube 23 with several rows of blow nozzles and a cover 24.

which allows the air to escape from the rotating blow nozzle tube 23 is only permitted in the direction of the tissue 19. The blow nozzle pipe 23 can be in the flow direction of the tissue rotate or opposite to the direction of travel. The rows of nozzles make it Tissue exposed to a pulsating stream of air and set in a flutter movement, which in its frequency can be controlled by changing the speed of the blow nozzle tube 23. Located above the fabric panel a suction hood: 25.

For this purpose 2 sheets of drawings

Claims (10)

Patent claims: 1. Process for the continuous carbonization of wool, in which the wool is wetted with acid, then dehydrated, dried and heated to firing temperature, then opened and / or or tapped and the acid adhering to the fibers is neutralized, whereby the on burning Firing temperature heated air by means of induced draft through the adhering to a curved surface Wool is directed, according to patent application P 14 94 549.4, characterized in that that the wool is pressed before souring with a press with hard rollers and high pressure. 2. The method according to claim 1, characterized in that that a number of card slivers or combed slivers, lined up parallel to a web, go through the individual treatment processes. 3. The method according to claim 1, characterized in that that to remove the carbonized components in piece goods, the web is pressed And is set in idleness. 4. Device for continuously performing the method according to one of the preceding claims, characterized by the combination of the following units: a) a take-off device (1) for card and top slivers or an infeed boom (18) with spreader for tissue (19), b) a trigger or press work (5) with hard Press rolls or hard press roll cover, c) at least one suction drum bath (7) for acidifying the wool, d) a sieve drum dryer (8) which is divided into a drying chamber (11) and a combustion chamber (12) is, or two sieve drum dryers, the first for drying and the second serves for burning, e) optionally a device (13, 21) for removing the carbonized constituents, f) suction drum baths (15) with a downstream press (5) for rinsing, neutralizing and Wash, g) a sieve drum dryer (16), h) a winding or depositing device (17), i) a common regulation and control device for the aforementioned units. 5. Apparatus according to claim 4, characterized in that the acid bath (7) is a further suction drum bath (6) is upstream with a press for netting the wool (2). 6. Apparatus according to claim 4 and 5, characterized in that for crushing and removing the carbonized components of the combustion chamber (12) a friction mechanism (13) with several pairs of rollers (14) is connected downstream. 7. Apparatus according to claim 4 and 5, characterized in that for crushing and removing the carbonized components from a fabric (19) of the combustion chamber a device (21) is nachgeschallet, which is used to guide the fabric (19) at the inlet and outlet each with a pair of rollers (22) has, of which at least the pair of inlet rollers is designed as a press with hard press rollers and below or above the web of fabric guided freely suspended between these roller pairs (22) at least one element (23, 24) is arranged which causes the fabric web (19) to flutter offset. 8. Apparatus according to claim 7, characterized in that the element (21) which the fabric web (19) set in fluttering movements, consists of a rotating blade nozzle tube (23), the several Has rows of blown nozzles and a cover that has an air outlet only in the direction of the material web (! 9) permitted. 9. Apparatus according to claim 7, characterized in that the web of material for fluttering at least a rotatably mounted star-shaped and cross-shaped element is assigned to which the goods coming into contact arm ends rotatably mounted rollers are arranged. 10. Apparatus according to claim 7 to 9, characterized in that the device (21) for comminuting and removing the carbonized components by means of suction, in particular a suction hood (25) owns.