SU33956A1 - Autoclave for cooking solid tanning extract - Google Patents

Description

The proposed autoclave for cooking solid tanning extract is provided with a perforated false bottom, under which there is an adjacent cylindrical or similar insert, which does not reach its sides to the walls of the autoclave and its bottom base to the bottom. This insert is provided in its upper part with recirculation holes, and from the outside - with a coil that heats the autoclave.

In FIG. 1 shows a vertical section of an autoclave; FIG. 2 - view of the autoclave from the outside.

The proposed autoclave (Figs. 1 and 2) consists of a hermetically sealed vessel 4 equipped with a false perforated bottom 7. Under the latter there is a copper coil 8 for heating the autoclave, and an insert 9 not reaching its side forming to the walls of the autoclave, and bottom base, to the bottom of it. The insert 9 is provided at its upper part with recirculation holes Y.

The autoclave can operate either without pressure (with an open valve .3) or under pressure. On the sides of the autoclave, there are two circulation pipes with taps / and 2. Taps 7 and 5 are attached to the pump and serve: valve / -

for pouring the autoclave, and valve 5 for pumping out of it.

With special needs, such a compound can also be used for artificial circulation. A steam line with a valve 6 is connected to the drain line and serves to blow the autoclave after operation; This line can also be used to speed up the splicing.

The process of boiling solid tanning extract is carried out as follows: the solid extract is loaded through the upper charging port / 7 to the false bottom 7. Pre-autoclave is filled with the appropriate rate of weak juices or water. bottom 7.

Most of the extracts have the peculiarity that when they are treated with hot liquids, before they are evenly crushed, they form oily masses that clog the false bottom of the boiling apparatus and thereby stop its normal operation. When the device is heated from below under the false bottom, a part of the liquid that is in direct contact with the heating surfaces, due to the absence of circulation, overheats, and the tannids that have passed into the liquid aggregate and precipitate. By means of the cylindrical insert 9, intensive circulation is made through the openings JO arranged therein and overheating is avoided. The same intensive circulation promotes the boiling of the extract washed from under the false bottom with 7 streams of hot liquid. This is the cooking phase of the extract with the taps / and 2 closed.

Continuous circulation around insert 9 washes away the spreading extract and prevents it from closing up the holes of the false bottom 7. As soon as the liquid is heated to boiling, the taps / and 2 open and hot streams from the false bottom 7 are directed along the lateral external circulation lines. pipes. Thus, heat energy is transformed into two streams: one under the false bottom 7 around the insert P and the other from under the false bottom 7 into the upper space.

Between the intensities of the two streams, a definite relation depends on the degree of the false bottom of the false bottom 7. When the bottom is completely closed, the circulation through the outer tubes cannot take place and only one flow is observed around the insert I blur the last one at the false bottom 7 and release it holes. As soon as a part of these openings is released, the second flow enters. With free holes x false bottom 7 both flows take place.

Subject and s about rei e.

An autoclave for boiling tannic extract using a perforated false bottom, characterized in that under the false bottom there is a cylindrical or adjacent insert adjacent to this bottom, which does not reach its side wall, but does not reach the bottom of the autoclave The insert has recirculation holes in its upper part and is surrounded on the outside by a coil heating the autoclave. to the author's testimony of IL V. Vass and S. G. Bronstein J o3956

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