| 摘要 |
The invention relates to a process for the separation of propenoxide from the saponification-fractionation stage within the propenoxide preparation plant. According to the invention, the process consists in that the vapour at the top of the saponification column having a propenoxide concentration of 30...70% by mass, a pressure of 1.0...1.3 barr and a temperature of 90...100°C are partially condensed at a temperature of 55...70°C, the condensation product being separated into two phases, where the vapour phase is compressed by a turbo-blower up to a pressure of 1.3...1.5 barr and introduced into the upper zone of the raw propenoxide fractionation column, while the liquid phase is pumped down to the lower zone of the column, the reflux of the saponification column consisting of a flow of water and propenoxide resulting from the preparation plant. |
