Potash production of potash - manufacturer with ion membrane method Appropriate chemical industry

potash on industrial use is very important, potash, also has a lot of manufacturers in the production of potassium carbonate methods, including ion membrane method is one of them.

ion membrane method can be summarized as with potassium chloride solution electrolysis into potassium hydroxide solution, then for enrichment, carbide, calcination and drying to produce potassium carbonate.

the initial ion membrane method is used for production of caustic soda, potassium hydroxide and caustic soda similar nature, so this technology is also used to produce potassium hydroxide. This ionic membrane law gradually get the use of many enterprises in our country, especially in recent years, this method has the very big development.

potash producer applying potassium into the melt salt bath of brine refining twice, and then applying brine in ionic membrane electrolyzer in the anode chamber, bubbled into direct current electrolysis, the anode chamber to produce chlorine and saline water, saline water after dechlorination process to salt, chlorine after cooling to the processing of chlorine gas and hydrogen gas.

since the electrolytic process to 35% potassium hydroxide solution into the falling film evaporator to concentrate 48%, after upper pump to the fluidized bed, gas or water gas combustion to produce carbon dioxide and heat into the bottom of the fluidized bed, the reaction into potassium bicarbonate, after boiling calcined generate potassium carbonate and carbon dioxide. After potash packaging manufacturer will produce potash to storage, and a small amount of potash in washing liquid can be recycled.

potash manufacturer use this kind of ionic membrane method, although there are many advantages, but the investment base slants big, long payback period, many need to be imported from abroad and equipment, implement the difficulty is very big, the potassium carbonate manufacturers still is given priority to with ion exchange method production technology.