Patent ID: 8815049
Filing Date: 2014-08-26
Classification: B01D,C02F

Abstract:
1. An apparatus for producing high purity water vapor stream from a produced water stream resulting from hydrocarbon production operations, said produced water stream comprising water, silica compounds, and volatile organics, said apparatus comprising: (a) a vertical tube, falling film evaporator system for evaporating said produced water stream and generating therefrom a contaminated steam stream having therein (i) entrained water droplets having solutes therein, volatile silica compounds, and volatile organic compounds, said vertical tube, falling film evaporator system comprising an evaporator body having a vertical condenser with an outer wall and a sump with an inner wall; (b) a caustic mixing system, said caustic mixing system configured to mix concentrated caustic with water to provide a dilute caustic solution; (c) a contaminant reduction system, said contaminant reduction system located in an annular space between said outer wall of said condenser and said inner wall of said sump, said multi-pass mist eliminator system comprising