DE27333C - Apparatus for extracting the paraffin from the mass used to decolorize the same - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 23: Fat Industry.

Fatentirt in the German Empire from October 27, 1883.

In order to decolorize the paraffin, the residues from the blood liquor salt production, partly bone charcoal and similar materials are used, which in this use a absorb a significant amount of paraffin.

A large part of this paraffin is melted by boiling with water recovered, but so much remains of it that further processing of these materials for complete extraction the paraffin is worth it.

The process to be described here is somewhat similar to that for degreasing the bones applied; but the peculiarities of the materials to be treated and the solvent to be used require a significantly different training of the procedure and essentially other institutions. In addition, you have to be completely Continuous operation can be seen, such as the apparatus shown in FIGS. 1 and 2 enable.

The device consists of two interconnected vessels A and A ₁ made of sheet iron, each of which is divided into three compartments BB ₁ CC ₁ DD ₁ by a funnel-like conical base a _x and a very fine-perforated sieve base b resting on suitable supports.

The uppermost of these three sections is used to hold the material to be treated and the extraction or solvent, the middle CC ₁ , which is equipped with an open steam coil c , is after the central opening of α is also covered with a sieve plate, with a suitable filter material, ζ. B. wick waste, hedge, cleaning wool, filled; the lowest division DD ₁ finally contains a closed steam coil d.

The latter is shown in dotted lines in FIG. 2, while the snake c is omitted in this figure.

In addition, each of the two vessels contains the entry opening E and, the two clearing openings F and G. The water (OeI) level indicator e and the two test taps h. and i permit observation of the processes inside the vessel, the funnel / eiri filling of liquids into space D. The tube k serves to convey the gases and vapors developing from the contents to the cooling vessel or condenser; / is the supply pipe for direct steam.

The operation is carried out alternately, in such a way that the Extraction or maceration takes place, in the other at the same time complete distillation of all volatile substances from the materials.

Demgemäfs Assume the vessel, A DAF does using fresh charge in operation, while in the A ₁ Procefs the extraction is finished and will now paced to distill.

Operation begins with compartment D of vessel A being filled with water or a lye or salt solution through the funnel / up to the tap h . Such a lye is best suited, which does not yet come to the boil during the heating necessary for the maceration process. This follows

the loading of the vessel part B with the material to be treated. It has a fine powdery state of aggregation, so that it trickles itself partly through the holes of the sieve b and is only kept from falling through by the filter material between α and b. Now the solvent is poured on through E.

In this case, light mineral oils obtained from lignite tar, which are capable of dissolving a certain amount of paraffin, serve as such. Thus, the filter material in C is impregnated from the beginning with such oil and is protected against water vapors occurring about, one can also eingiefsen by f mineral oils.

After loading and conclusion of E is in the queue d the back or indirect steam from the steam coil fed with directem d _x headed. At the end the taps 1 and 2 are open, as are taps 5, IV and II, but I and VI are closed. The heat thus brought to D is shared with the lye and through it with the solvent oil, which at this temperature completely dissolves the paraffin contained in the materials. This paraffin solution decreases through the filter C to D. Once this is done to a sufficient Mafse what you win by experience evidence is completely drained by g the caustic and dissolved in petroleum wax directly accumulated on it. With this the first part of the process is ended, and the final distillation is proceeded in A , while A _{1 is} now emptied and freshly filled. At the end, after the taps 1 and VI have been closed, with opening I direct steam is passed to d , which sweeps from d through V, 2 and 4 to d ₁ and through 6 into the open. At the same time the cock III is also opened and direct steam is led through the open coil c into rooms C and B.

The caused by the direct steam into DC and B increase in temperature causes volatilization first, partly condenses the entering by D paraffin solution, which is withdrawn as a vapor partly through k at the filling of B, drips and is volatilized again. Finally, the last remainder of the oil still in the charge is driven off as steam by k.

When this is done, all the taps of A are closed, the completely drained charge is removed by F , and the vessel is prepared for a repetition of the process. -

What has been said here of A is also true of A ₁ , so that the process is always continued with an even change of the two vessels.

Other similar materials, e.g. B. the paraffin-rich Wick waste from paraffin candle production.

Claims (2)

Patent Claims: 1. For complete extraction of the paraffin from the materials used for decolorization and cleaning and from other materials, the apparatus, consisting of two vessels with compartments B and D separated from one another by the filter body C , space D being a closed steam coil d and the filter body C contains a perforated steam coil c . 2. The peculiar connection of the parts of the apparatus to one another, produced by pipes and taps, so that, with continuous alternating operation, the return steam of the line d of one vessel is used in the line d of the other. For this purpose ι sheet of drawings.