Method for producing base oil by isodewaxing

Method for producing base oil by isodewaxing

  • CN 101,942,320 A
  • Filed: 07/09/2009
  • Published: 01/12/2011
  • Est. Priority Date: 07/09/2009
  • Status: Active Grant
First Claim
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1. isomerization dewaxing production basis oil method, comprise following content:

  • under the hydroisomerizing condition, stock oil and hydrogen are by the hydroisomerization catalyst bed, hydroisomerization catalyst comprises TON type molecular sieve and platinum metals active ingredient, the weight content of platinum metals active ingredient is 0.05wt%~

    0.5wt% in the hydroisomerization catalyst, it is characterized in that;

    described hydroisomerization catalyst bed comprises two kinds of hydroisomerization catalysts at least, improve successively by contained molecular sieve modified degree in stock oil and the flow hydrogen gas direction hydroisomerization catalyst, molecular sieve modified degree method from low to high is followed successively by;

    the ammonium exchange is handled, ammonium exchange+dealumination treatment, ammonium exchange+dealuminzation+benefit silicon is handled.

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