Comprehensive utilization method of silicon-aluminum-phosphorus molecular sieve synthesis liquid

Comprehensive utilization method of silicon-aluminum-phosphorus molecular sieve synthesis liquid

  • CN 103,172,083 A
  • Filed: 12/23/2011
  • Published: 06/26/2013
  • Est. Priority Date: 12/23/2011
  • Status: Active Application
First Claim
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1. the method for sial phosphorus molecular sieve synthetic fluid comprehensive utilization is characterized in that:

  • In synthesizing Si-Al phosphorus molecular sieve process, system removes the liquid that produces after zeolite product, be S liquid, S liquid can be directly used in synthetic SAPO molecular sieve, or S liquid drying is made micro mist, i.e. S powder, or will be after the roasting of S powder the S powder of roasting, the S powder of S powder or roasting is used further to synthetic SAPO molecular sieve, and process is as follows;

    1) measure the solid content of S liquid, in oxide compound, measure silicon oxide, aluminum oxide and phosphorus pentoxide content in S liquid;

    Solid matter content in the S powder of S powder or roasting in oxide compound, and calculates silicon oxide, aluminum oxide and phosphorus pentoxide content in the S powder of S powder or roasting;

    In oxide compound, the feed molar proportioning of synthetic SAPO molecular sieve analog is;

    (0.05-2) SiO 2;

    (0.2-3) Al 2O 3;

    (0.2-3) P 2O 5;

    (20-100) H 2O;

    (0.5-10) template;

    Serve as 1%~

    40% aluminium source with aluminum oxide in S liquid, or serve as 1%~

    100% aluminium source with aluminum oxide in the S powder of S powder or roasting, calculate the amount of the template of the amount of the silicon source that need to add, aluminium source, phosphorus source, deionized water and interpolation;

    2) directly use S liquid;

    according to step

         1) in proportioning, with each mixing of materials, fully stir in the silicon source that takes S liquid, template, deionized water and add, aluminium source, phosphorus source, mixes;

    Or, utilize the S powder of S powder or roasting;

    according to step

         1) in proportioning, with each mixing of materials, fully stir in the silicon source that takes S powder, template, deionized water and add, aluminium source, phosphorus source, mixes;

    3) mixed solution that step 2 is obtained is moved in reactor, agingly under whipped state is no less than 6 hours, 150-250 ℃

    lower crystallization 12-48 hour;

    4) reaction end afterreaction still is cooling emits material, and molecular sieve liquid washs and is dry, obtains the former powder of SAPO molecular sieve analog.

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