Gas field methanol sewage disposal process
A sewage treatment and process technology, applied in the field of methanol sewage treatment process in gas fields, can solve problems such as equipment and pipeline corrosion, rectification tower packing blockage, heat exchange equipment scaling and other problems
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[0025] Such as figure 1 As shown, the gas field sewage entering the oil removal tank 1 is placed in the coagulation settling tank 3 after the pretreatment process, and the feed liquid in the coagulation settling tank 3 is pressurized by the pump 11 and filtered by the filter 5, and then enters the preheating heat exchange device 4, preheating the effluent water from the bottom of the rectification tower 8 to 40-65°C, entering the raw material heating heat exchanger 12, heating it to the boiling point of 90°C through steam, and entering the rectification tower 8 through the inlet 803 in the middle of the rectification tower; rectification The liquid phase in tower 8 flows from top to bottom and contacts with the secondary steam moving from bottom to top in countercurrent to complete the heat and mass transfer process; the water flowing into the bottom of rectification tower 8 is kept at 105-110°C and enters by liquid level difference The kettle-type reboiler 10 is partially vap...
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