DE450809C - Device for cleaning raw salts by dissolving them and recrystallizing them - Google Patents

Description

Device for cleaning crude salts by dissolving and recrystallizing.

When salt solutions crystallize out by cooling, one is already switched to using facilities in which there is an exchange of heat between the hot and the cold lye used for cooling takes place in order to act on them Way to make the otherwise lost heat usable again.

For this purpose, you already have double tubes, double-walled cylinders O. The like. Used, which are arranged either lying or standing and in which the hot and cold liquor move in countercurrent to each other.

Here, the cold liquor should heat up again, if necessary Provided with a special addition of heat, used to dissolve fresh amounts of salt to become. The previous facilities still have defects ~ shown, especially in the encrustation of the cooling surfaces by the salt and thus consisted in an obstruction of the heat exchange.

With the device according to the present invention, the The abuses mentioned are not only eliminated, but it is also a Much more complete heat exchange is achieved, which also increases the efficiency the whole system increases.

The device consists of a number of vertical, fixed arranged double cylinder, the inner wall of which is called at the top with the one to be cooled Lye is sprinkled, while in the hollow jacket of the cylinder the cold liquor rises to be drawn off at the upper end and after additional To serve warming to redissolve the crude salts. The loading of the inner Cylinder wall happens through a special distribution ring, which is designed in this way is that the hot liquor supplied by it is forced to form one of the helical Winding to cover existing path, whereby the time of the heat exchange is significant is extended.

In addition, there is a constant going up and down in the inner cylinder Scraper provided, which allows the salt deposits to fall through freely, so that disturbing side effects, which could be caused by the scraper, be prevented. It does this in such a way that the scraper as a result of it Umbrella-like collapsible training scrapes the wall when going downhill and pushes the salt before him - while he. collapses on upward gear and thus the danger of encrusting from falling salt is removed.

In the drawing, Fig. I shows the device in the vertical Section shown, while Fig. 2 shows a side view.

The saturated hot lye used to dissolve the crude salts is through the supply line e by means of the nozzle rings f to the inner wall of the cylinder g injected, whereby they follow the entire wall surface as a result of the twist generated here brushed downwards in a helical manner. The liquid draining off below enters Containers », which simultaneously serve as additional cooling containers and as crystallization vessels to serve.

The cooled liquor removed here is -through pipeline or the Annular space d between the cylinder jackets a and b fed to in this, ascending through pipeline p to be fed back to the dissolving vessels for the crude salts. Inside the cylinder g move the scraper i, the linkage by a Shaft k with gear train I driven by the motor m with constant reversal of movement will. The scrapers i are set up so that they fold up when going up, while they spread during the downward gear and are attached to the inner wall b of the cylinder g put on.

Claims (1)

P A T E N T A N S P R U C H: Device for cleaning raw salts by dissolving and recrystallizing with cooling the hot salt-saturated Solution by means of the cold dissolving eye in vertical, stationary double cylinders, characterized in that one arranged in the upper part of the inner cylinder Nozzle ring (f) is designed such that the saline solution fed through it the The inner wall of the cylinder is acted upon in helical turns, while at the same time a scraper (i) which can be moved up and down in its interior is provided which when going up, it collapses like an umbrella, while when going down, it collapses spreads apart.