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Treating method and equipment for coke-cooling wastewater

  • US 7,419,608 B2
  • Filed: 05/15/2007
  • Issued: 09/02/2008
  • Est. Priority Date: 11/15/2004
  • Status: Active Grant
First Claim
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1. A method for treating coke-cooling wastewater, comprising the following steps:

  • (a) cooling the coke-cooling wastewater produced in a delayed coking process to 5-55°

    C. under 0.1-0.25 MPa absolute pressure, to obtain cooled coke-cooling wastewater;

    (b) subjecting the cooled coke-cooling wastewater to solid-liquid separation, to obtain a coke breeze phase and a liquid phase;

    (c) further separating the obtained liquid phase, to obtain an oil phase and a water phase; and

    (d) further discharging water from the obtained oil phase, to obtain the separated oil phase.

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