鹽田飽和鹵水直接進(jìn)蒸發(fā)罐真空制鹽工藝介紹-資料下載頁(yè)
2025-06-29 04:08本頁(yè)面
【正文】 he process of dissolving salt, so the equipment investment is higher. But because of saving a lot of salina crystal area the total investment is lower.4. COMPARE THE ECONOMIC INDICATORS WITH THE PROCESS OF DISSOLVING CRUDE SALT AND THEN REMAKING SALT In China There are two main methods to producing vacuum salt in sea salt area. One is pumping the beach saturated brine into evaporating pot. The other is using the saturated brine got by dissolving crude salt. Comparing the second method with the first method the relative merits of the second method is as follows:（1）need to build crystal pond and the total investment is higher.(2)The evaporated water of unit product is smaller and the equipment investment is lower.(3)The consuming of electricity and steam is lower.(4)The consuming of water is more and m3 water will be consumed in relation to 1 ton salt.(5)The loss of mother liquor is bigger. The economic indicators of the two methods are as follows:Comparison of the main economic and technical normsItemThe process by dissolving saltThe process by the saturated brine being pumped into evaporating pot directlyInvestmentEvaporating pot Crystal pond5,500,000yuan0Evaporating equipment9701080Unit product335 yuan/t306yuan/tConsuming indicatorTargetCrude fuelcrude salt－BrineFresh water m3 m3Electricity5070degree5070 degreeBetween the two processes there is bigger difference in the investment and production cost of the unit product. The total investment of the unit product is lower and the cost of unit product is lower 30％ than the method of dissolving crude salt.For the plant that producing refine salt in the sea salt area in north using the method of pumping beach saturated brine into evaporating pot and producing salt is a good production process. It can save investment and land. Particularly dissolving crude salt into saturated salt and then making salt is a kind of waste to land resource. Moreover, the production cost is lower. And corporations will get more profit. The mother liquor can be used to product potassium, bromine and magnesium etc. Brine will be utilized pletely. No waste be discharged and it will reduce environment pollution. This is in favor of the sustainable development.
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