【摘要】 在蒸发结晶法生产食用氯化钾工艺中,存在高能耗、高碳排放的问题。每生产1 t食用氯化钾需消耗2 t蒸汽,而80%的蒸汽消耗产生在氯化钾的结晶过程中。为了解决这个问题,利用DTB结晶器和MVR蒸汽压缩技术对结晶工艺进行了改造。结果表明:改造后工艺与原工艺相比,结晶工段蒸汽实现零消耗,总的蒸汽消耗降至0.4 t,蒸汽消耗减少80%,每1 t产品成本节约了280元,以年产1万t食用氯化钾计,生产系统可节约成本280万元;同时,二氧化碳的排放量也比过去减少80%以上,实现了节能减排的目的。更多还原

【Abstract】 There are the problems of high energy consumption and high carbon emission in the production technology of edible potassium chloride by evaporation crystallization process.1 t edible potassium chloride product will consume 2 t steam, and 80% of the steam consumption is in the crystallization process of potassium chloride.In order to solve these problems, DTB crystallizer and MVR steam compressor technologies were used on the process.Results showed that: compared with the original technology,crystallization process realized steam zero consumption after the transformation;the total steam consumption was reduced to 0.4 t,and steam consumption reduced by 80%;280 Yuan cost was saved per 1 t product; with an annual output of 10 000 t edible potassium chloride, annual cost savings of production system was up to 2.8 million Yuan;at the same time,carbon dioxide emission also reduced by more than 80%,and therefore the purpose of energy saving and emission reduction was achieved.更多还原