DE12172C - Innovations in the procedure for; Representation of sugar lime made from molasses. (1 - Google Patents

Description

1879.

Class 89.

MORIZ WEINRICH in PECEK (Bohemia) and VIENNA. Innovations in the process for the preparation of sugar lime from molasses.

First additional patent to No. 7171 of July 17, 1878.

Patented in the German Empire on October 31, 1879. Longest duration: July 16, 1893.

1. Arise in my elution process in the preparation of the lime to powdery, finely sifted hydrated lime residues, consisting of sand, asterisks and other impurities, mixed with pure lime particles. Around Now that the latter can also be used in the elution company, I proceed as follows:

The lime residues are poured over with so much water that the pure lime parts become one thick milk of lime, then this milk of lime is separated from the impurities and added to the heated molasses before they are mixed with powdered hydrated lime. on In this way, the annoying foaming of the heated molasses is also significantly reduced. It is advantageous to add this milk of lime to molasses up to a certain extent Increase the limit and in this case use less powdered hydrated lime to. If one wants more than about a quarter of the lime necessary for the formation of sugar lime in the form of milk of lime, the molasses must be added before or after the addition be concentrated in order to subsequently reduce the necessary hardness and brittleness of the molasses lime to achieve.

2. It is also possible to use all of the molasses for the formation of sugar calves Add lime in the form of thick milk of lime. In this case, the water content of the molasses becomes by evaporation to 6 to 8 pCt. reduced, then heated to about 100 ° C. and intimately mixed with the thick milk of lime, which can also be heated beforehand.

The hot molasses lime mixed in this way should have a semi-liquid consistency; shows up if it is thinner, it must be somewhat concentrated by evaporation with simultaneous stirring. The mixture is then filled into suitable vessels, allowed to cool and solidify in them and treats the resulting hard, brittle molasses lime as previously described.

3. In order to achieve as perfect a connection as possible between the sugar in the molasses and lime, the latter likes now:

a) as hydrated lime in powder form alone,

b) combined as hydrated lime in powder and milk form,

c) in milk form alone

are used, it is necessary that the mixing of the two substances not is only a very intimate one, but also the temperature during the mixing to about 100 ° C. preserved. In order to fully fulfill this purpose, I have the one shown in FIG Mixing device constructed. It consists of a cylindrical vessel with a double bottom and double jacket, which allows it to be fully steam heated. A system is created in this vessel that has been warmed up in this way . of agitator arms by belt or gear drive in continuous rotation, while Molasses heated through two lateral openings on the one hand, and hydrated lime in powder form on the other or in the combination described above.

The resulting pulpy molasses lime in the heated room is replaced by a Slide or a hose provided with a clamping device through the bottom of the mixing vessel drained and filled into boxes, in which it solidifies to a hard and brittle mass.

The whole operation can be carried out in batches or continuously.

4. In my process, the hard, brittle molasses lime is to be crushed into grit and dust, for which I use a crusher and a disintegrator.

The percentage of dust should be as low as possible so that there are no difficulties with Leaching occurs.

A crusher is used, which the molasses lime the disintegrator in very much

Claims (2)

surrendered in a crushed state without having formed much dust. The same is shown in FIGS. 2 and 3 and consists of two pairs of crushing rollers standing one above the other and driven by gear wheels at the same or a different speed. The hard and brittle molasses lime, previously chopped up by axes, is thrown in through an opening in the cover hood H and thus reaches the upper pair of rollers, from here, already significantly crushed, onto the lower rollers and, after passing them, to the disintegrator, whereupon how in my patent PR No. 7171 is shown in detail, the resulting grit and dust is fed to the agitator and converted into molasses lime sand. The crushing rollers consist of strong shafts, onto which the toothed disks and ring-shaped intermediate layers cut out of approx. 15 mm thick sheet steel according to FIG. 2 are placed and held together by wedges or nuts. The toothed disks of the opposing crushing rollers engage in the gaps of the other roller in the manner shown in FIG. 3 with moderate play. The pieces of molasses lime thrown in at the top are gripped by the crushing rollers rotating against each other and crushed almost dust-free by the interlocking toothed disks. The construction of the lower pair of rollers that then come into effect is completely identical, but here the toothed disks are less thick and are placed closer together. Mention should also be made of the attachment of the hood H leading to the fan, which is intended to remove the dust annoying the worker, as well as the arrangement of the scrapers a engaging between the breaker disks , which can be seen in FIGS. 2 and 3. 5. Given the fine-grained nature of my molasses-lime sand, its leaching goes into the authors much faster if the layer of the same is not too high, and the (transit) The area for the lye to exit is as large as possible. For this reason are To use lying elutors in my procedure with greater advantage than standing ones. The construction thereof is shown in Figs. They are either completely cylindrical and provided with flat or arched final floors, or tapered towards the ends, to make it easier for the lye to run off. The filter surface is formed by a sieve bottom placed in the lower half, which likewise with advantage has a slight fall (Y ₅₀ to Yioo is sufficient) on the side where the milk of lime is withdrawn. Two laterally riveted strips /, Fig. 6, which are connected in certain spaces by cross members t , serve to place the sieve bottom, which consists of perforated or slotted metal sheets. A layer of filter cloth is placed on the sheet metal sieves, the sealing of which is of the utmost importance in order to prevent the loss of sugar lime in the lye. For this purpose, strips of flat iron are placed on the folded ends of the filter cloth wall and, depending on the strength of this flat iron, held down in narrower or wider spaces by screws or wedges. The latter construction, which affords the advantage of quickest assembly, is shown in Figs. 6 and 7, in which s denotes the sieve plate / filter cloth wall, e the flat iron bar, k the wedge and w the riveted clamp serving as the abutment of the wedge. Perforated steam pipes d are placed over the filter cloth wall and are connected at one or both ends to the transverse frame q which mediates the inflow of steam, FIGS. 4 and 5. The molasses-lime sand produced by my method is placed in the lye container prepared in this way introduced by natural fall or on inclines of up to 5 m by means of a pumping station. With larger lengths of the caustic pot recommends, as shown in Fig. 4, the attachment of two inlet openings, ' underneath which distribution screens are hung, in order to ensure the most uniform possible storage effect of the sand. If the caustic pot is sufficiently filled with molasses lime sand, then spirit is added through the valves indicated in FIG. 4, or the caustic is withdrawn. After completion of the leaching, the spirit is distilled off by direct steam by means of the steam pipes d; the same escapes through the valve indicated in FIG. 4, while the remaining sugar-lime milk is drawn off through valve v, FIG. 5, which is attached to the lowest point of the sieve bottom. If sugar-lime milk has seeped through to below the filter base, it is drained through valve v ¹ , Fig. 5. These valves have the device that the valve plate is flush with the inner surface of the liquor cylinder, in order to prevent them from becoming misaligned. PATENT CLAIMS: ι. The representation of hard, brittle molasses lime without artificial drying by mixing of pulverulent hydrated lime and milk of lime in any proportion, or of the latter alone with more concentrated hot molasses. 2. The construction and use of a cylindrical, with agitator arms and heating direction provided apparatus for continuous mixing of molasses and lime, Fig. I. The construction and use of a crusher with two standing on top of each other Pairs of rollers on which interlocking toothed disks are attached to successive breaking of hard molasses lime, Fig. 2 and 3. The construction and use of a lying, cylindrical lye vessel with the described arrangement and fastening of the filter base, FIGS. 4 to 7. 1 sheet of drawings.