The startup method of rectifying column

The startup method of rectifying column

  • CN 102,858,920 B
  • Filed: 03/15/2011
  • Issued: 07/11/2017
  • Est. Priority Date: 03/25/2010
  • Status: Active Grant
First Claim
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1. a kind of startup method of rectifying column, the rectifying column is supplied to the wax fraction included in Fisher-Tropsch synthesis fuels in waxIsocrackate obtained from being hydrocracked in cut fraction hydrogenation cracking operation, and the isocrackate is describedIt is fractionated in rectifying column,The startup method has:

  • The preheating procedure preheated to the rectifying column of normal temperature using the hydrocarbon ils obtained by the isocrackate, it is describedPreheating does not use the special oil with heat;

    AndWhen the preheating of the rectifying column finishes, the isocrackate comprising non-cracking wax starts to instituteRectifying column supply is stated, by continuing to supply the Temperature Distribution for making the rectifying column close to the work of the Temperature Distribution of usual operatingSequence,The pour point that the hydrocarbon ils is determined by the method for JISK2269 defineds under absolute pressure 101325Pa for 23 DEG C withUnder,Wherein, the preheating procedure possesses:

    Heat the hydrocarbon ils and be supplied to the operation of the rectifying column;

    Bottom of towe oil is extracted out from the bottom of towe of the rectifying column to be heated and returned to the operation of the rectifying column;

    WithOperation during the cut distillated from the top of tower of the rectifying column is back into the rectifying column.

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