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.

Key words: edible potassium chloride, technology, energy saving, reconstruction