DE378694C

DE378694C - Process for dissolving potash or other salts

Info

Publication number: DE378694C
Application number: DEB99133D
Authority: DE
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-04-01
Filing date: 1921-04-01
Publication date: 1923-07-27

Description

Verfahren zum Lösen von Kalisalzen oder anderen Salzen.Process for dissolving potash salts or other salts.

Das Lösen des aus den Kaligruben geförderten Rohsalzes zum Zwecke Ider Fabrikation von Chlorkalium geschieht zum größten Teile in angewärmter Löselauge, die mittels Dampf und Abdampf, teils direkt, teils indirekt, geheizt wird. The dissolving of the crude salt extracted from the potash pits for the purpose In the manufacture of potassium chloride, for the most part, it takes place in warmed solvent solution, which is heated by means of steam and exhaust steam, partly directly, partly indirectly.

Bei dem vorliegenden Verfahren ist zwar auch die Löseiauge möglichst mit Abdampf zu erwärmen, aber das Rohsalz soll vor dem Einbringen in die Löseapparate nur mittels Abgasen der Kesselfeuerungen oder Heizgase anderer Feuerungen in zweckmäßigen, eigens dazu hergestellten Salzvorwärmern, Heizregistern oder Salzeconomisern, die nach der Art der stehenden Speisewasservorwärmer hinter den Dampfkesseln oder anderen Öfen vorgesehen sind, die hinreichend erhitzt werden. In the present process, the dissolving solution is also as possible to be heated with exhaust steam, but the crude salt should be put into the dissolving apparatus before it is introduced only by means of exhaust gases from the boiler furnaces or heating gases from other furnaces in appropriate, specially manufactured salt preheaters, heating registers or salt economizers that depending on the type of upright feed water preheater behind the steam boiler or other Furnaces are provided that are sufficiently heated.

Bekanntlich haben Idie Fuchsgase oder die Gase anderer Feuerungen immer noch eine weit über 200° C liegende Temperatur. Mit dieser soll das Rohsalz in Heizregistern so weit erhitzt werden, daß das Nachheizen der Lösung mittels Dampf entbehrlich ist. Da es sich hierbei um eine ökonomis,E.e Ausnutzung der Feuergase handelt, so werden größere Mengen Kohlen gespart und eine höhere Wirtschaftlichkeit des Kalifabrikationsprozesses gewährleistet. nei den in den Patentschriften 3I6492 und 3I6493 beschriebenen Verfahren soll beim Auskristallisiieren von Salzen aus heißen Laugen frei werdende Wärme ausgenutzt werden. As is well known, I have fox gases or the gases of other furnaces still a temperature well above 200 ° C. With this the crude salt should be heated in heating registers to such an extent that the solution can be reheated by means of steam is dispensable. Since this is an economis, E.e utilization of the fire gases acts, so larger amounts of coal are saved and a higher profitability of the potash manufacturing process. nei those in patent specifications 3I6492 and 3I6493 described method is intended to crystallize from salts The heat released by hot alkaline solutions can be used.

Claims

This is clearly expressed in the patent claim lines 35 to 45, in that in it only the heat released during crystallization and the heat that is withdrawn Swath is spoken. There is no mention of the fire gases from steam boilers or other furnaces mentioned, which according to the present procedure, the heating register rinse around, i.e. do not come into direct contact with the salts to be heated.

The patent specification 273890 describes the leaching of magnesium chloride from the raw carnallite and the evaporation of that remaining in the salt residue Alcohol. It can be seen that this patent also includes the initially explained Does not anticipate inventive ideas.

PATENT CLAIM: Process for dissolving potash salts or others Salts, characterized in that the comminuted material to be dissolved before the treatment with dissolving lye with hot exhaust gases in appropriate manner like the feed water preheater built devices is heated.