鹽田飽和鹵水直接進(jìn)蒸發(fā)罐真空制鹽工藝流程(參考版)
2025-07-02 04:10本頁面
【正文】 New technology of producing refined salt by adding salt field saturated brine into evaporator directly Jin zhiling Ge Jinyang (Salt Research Institute China Natural Salt Industry Corporation, TianJin 300450)Abstract: After Making saline saturated brine flow in evaporating pot, the sodium chloride is obtained by evaporative crystallization. Calcium and magnesium ions can be removed by washing salt three times in order to get the sodium chloride that the purity is over percent and the mother liquor that have high concentration.Key words: saline saturated brine, vacuum, refine salt 9 / 91 BRIEF INTRODUCTIONAt present, the materials of making vacuum salt are using the well and rock salt in most of the well and rock salt corporations and the saturated brine got by dissolving crude salt. Along with the rapid development of caustic alkali and sodium carbonate and the growth in the people’s living standard, the contradiction of crude salt in supply and require is more and more stood out.Particularly in the sea salt areas, producting refine salt with saturated brine that is got by dissolving crude salt can increase the consumption of raw salt , reduce the availability factor of salt field, add investment and production cost. This will influence the economic efficiency of edible salt manufacturing enterprises , make them reduce output and affect people’s live.However, using the method of making saline saturated brine flow in evaporating pot and then obtaining sodium chloride by evaporative crystallization can saving crystal area. Furthermore, the mother liquor can be used as material to produce chemically products such as potassium chloride, magnesium chloride etc. in order to make use of all kinds of effective constituents in the brine and achieve the objects of no discharge ,no pollution and circulating economy.2. INDICATION OF THE PROCESS FLOWAfter being solarized to saturation in beach field brine was inducted to brine tank and stored. On the one hand brine tank can store some saturated brine that is used to produce vacuum salt. On the other hand ,brine have some residence time here so some impurities can be deposited in order to make the brine be purified. After being drawouted from brine tank the cleaned saturated brine was pumped to f
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