| abstract |
A kind of methanol-to-olefins sour water stripper and its sewage water treatment method, including stripper, return tank between thick ketone tank and setting stripper and thick ketone tank, the first condenser is arranged by piping connection in the gaseous phase outlet position of the stripper top, the outlet port of first condenser is connected by pipeline with the entrance of return tank, the gaseous phase outlet position of the return tank is equipped with is arranged the second condenser by piping connection, second condenser is equipped with first outlet and second outlet, first outlet position on second condenser accesses ambient systems by pipeline and carries out freshening to gas phase；The beneficial effects of the invention are as follows：The second condenser is arranged in return tank gaseous phase outlet position, by the main component at the top of return tank be acetone butanone vapor condensation at liquid phase, into thick ketone tank, then the external world is delivered to by pump, reduce accumulation of the ketone in system, the COD in washing water can be greatly reduced, to reduce the steam consumption of Wastewater Stripping Tower. |