| 摘要 |
<p>28 The present invention relates to a method for recovering glycol(s), especially ethylene glycol, from a mixture of glycol(s) and water. This method comprises the following steps: admixing in a first reservoir a mixture of glycol(s) and water with a sufficient amount of a compound reacting with water to give a product insoluble inwater and form a slurry which is defined as a suspension of at least said insoluble product in water and in which glycol(s) are insoluble; allowing the mixture obtained from the preceding step to separate into two distinct phases, that is an upper phase essentially consisting of glycol(s) and a lower phase essentially consisting of the above mentioned slurry, said phases being separated by an interface glycol(s) - slurry; collecting the lower phase contained in the first reservoir and carrying it into a second reservoir; and collecting the upper phase of the first reservoir and carrying it into a third reservoir; glycol(s) of the third reservoir being ready to be used, while the slurry of the second reservoir is ready to define a valuable by-product. The invention also relates to a device usable to carry out this method.</p> |
