Method for preparing 13X molecular sieve free of binder

Method for preparing 13X molecular sieve free of binder

  • CN 102,513,059 A
  • Filed: 12/15/2011
  • Published: 06/27/2012
  • Est. Priority Date: 12/15/2011
  • Status: Active Application
First Claim
Patent Images

1. the preparation method of a binder free 13X molecular sieve is characterized in that comprising the steps:

  • (1) 85-90 weight portion 13X molecular screen primary powder mixes with 10-15 weight portion clay, adds 2-10 weight portion additive, granulation in comminutor, and the rotating speed of comminutor is 30-60 rev/min;

    (2) with graininess intermediate product after the granulation, require to sieve according to product granularity, oven dry is after 350 ℃

    of-800 ℃

    of high-temperature roastings;

    (3) intermediate product after the roasting immerses in the sodium silicate solution that contains 5-15% sodium oxide molybdena and 2-10% silica and reacts;

    Reaction temperature is 80-100 ℃

    ;

    Reaction time is 4-16 hour;

    After washing, the oven dry granular disintegration is carried out the high-temperature roasting second time at 200-800 ℃

    , get binder free 13X zeolite product.

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