DE2142425C3 - Process for the production of a free-flowing dry molasses that can be used as animal feed - Google Patents

Description

These conditions should only be possible with great technical effort (e.g. colloid mills). In any case since the material to over 100 ° C erwärmi must be during drying, the method according to the invention, a substantial simplification. By increasing. '> Warming at 50 ⁰ C decreases the viscosity of the molasses so that the mixing process significantly easier will. The application of the heated molasses on drum dryers can be carried out better than with a cold molasses; the drying capacity of the drum dryer is also increased by the amount of heat supplied during the previous heating

Compared to the method of French patent specification 20 40 662, the inventive Procedure made significant progress. The aim of the known method is the production of a pulverized ten dry molasses. The product produced according to the invention, on the other hand, is lumpy to flaky Form before with a grain size in the range of 1 to mm.

In view of the viscous state of the molasses, a relatively cumbersome and time-consuming one Drying carried out:

1) First, the molasses is in a standard two-stage evaporator system under vacuum at 80 Pin-thickened up to 90 ° C to 97% dry matter.

2) This is followed by kneading dry calcium or magnesium oxide, whereby some of the water is formed in the form of the corresponding Hydrates are to be found.

3) As a third step, a post-drying of the dough thus formed follows during ei "he From -'- jhlung of 80 to 85 ° C on Raumtemperati'r ^D:. Ese cooling takes place after the Verspan of the product in a cold air stream of a cooling shaft in the. Foaming carried out according to the invention, which contributes significantly to the stabilization of the end product, does not take place

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turned evaporators with tubular or ring heating chambers local overheating occur, which can lead to carbonization of the molasses. In addition, there is the need to achieve a good distribution, the calcium oxide to be added is ground to grain sizes below 100 microns would have to be, which is only possible with a considerable amount of technical effort. trouble this type does not occur in the method according to the invention.

The method according to the invention is described below using an example of the drying of molasses with a drum dryer Procedure described in more detail.

The molasses is processed in batch operation with the moisture content that arises after sugar production Refurbished by taking the molasses after pouring it into processing vessels and heating it to 50 ° C Stirring in water slurried lime hydrate is added as milk of lime or lime slurry. Then takes place Blowing in compressed air via a compressed air snake at the bottom of the processing vessel until the desired Volume increase is reached and a fine-pored molasses foam has arisen. Further processing takes place according to the known procedure on a drum dryer according to the following scheme. The foamed molasses is fed to the dryer by means of a positive displacement pump via a ring line. The height of the "sump" between application roller and drying roller is controlled by a level Control valve set. The portion of wet molasses not taken from the dryer becomes the respective one Returned the pumping vessel. The one that has dried on the drying cylinder, is still hot and fluid Molasses is lifted off with a scraper knife and fed directly to a cooling cylinder on which the molasses cools and solidifies and with a second scraper knife as a flake from the roller is lifted. The dry molasses can immediately after leaving the drying plant in flake form or packed and stored after compacting in spherical or tablet form. To a flawless To ensure that the tablets are released from the briquetting machine, it is necessary to To spray compactor rollers with a lubricant. The packaging takes place in airtight containers. The system can be operated by one operator.

The one produced by the process according to the invention Dry molasses is a loose, free flowing, powdery, lumpy mass of light brown color and high Feed value. The method according to the invention is sheared, so that the feed value, the digestibility and the taste-improving properties of the molasses are retained. The product can be in one Grain size range can be generated, which has good mixing properties. When mixed, a good one takes place and rapid distribution with the remaining feed components, which is due to the hygroscopicity Moisture absorbed by the dry molasses during the mixing process is sufficient to ensure good adhesion the molasses particles on the other components to be selected. Segregation cannot therefore take place. The distributions of the use of such dry molasses are also named for the individual consumer, e.g. B. in the preparation of feed for direct feeding or for silage preparation with regard to the good flow, mixing and dosing properties of importance.

The dried molasses powder is in moisture-proof packaging at normal temperatures can be stored. The powder is hygroscopic, iicni So when standing open moisture from the air or can moisture from after surface contact absorb other substances. The product is also readily soluble in water.