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Method for removing liquid from a liquid-solids mixture

  • US 4,778,605 A
  • Filed: 04/29/1987
  • Issued: 10/18/1988
  • Est. Priority Date: 04/29/1987
  • Status: Expired due to Fees
First Claim
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1. A method for removing liquid from a liquid-solids mixture comprising the steps of:

  • (a) introducing the mixture to a vessel;

    (b) filtering the mixture within the vessel after step (a) so as to withdraw a substantial portion of the liquid from the vessel through at least one filter;

    (c) withdrawing from the vessel, through a first conduit line, gases present in the vessel after step (b) so as to depressurize the vessel to predetermined pressure conditions whereby liquid remaining in the vessel after step (b) tends to vaporize;

    (d) maintaining said pressure conditions for a period of time so that a substantial portion of liquid remaining in the vessel after step (b) vaporizes to a vapor;

    (e) heating the contents of the vessel during step (d);

    (f) agitating the contents of the vessel at least during step (d);

    (g) withdrawing the vapor from the vessel through a second conduit line during step (d); and

    (h) withdrawing substantially dry solids from the vessel after steps (d) and (g).

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