For improving separation method and the device of xylol in simulation moving bed

For improving separation method and the device of xylol in simulation moving bed

  • CN 106,064,001 A
  • Filed: 06/24/2008
  • Published: 11/02/2016
  • Est. Priority Date: 07/30/2007
  • Status: Active Application
First Claim
Patent Images

1. , for by being directly separated, in single moving-bed adsorption step, the method that separation purity is at least the xylol of 99.5 weight % from the feed F of the aromatic hydrocarbon substantially with 8 carbon atoms in simulation moving bed device (being simply expressed as SMB), this simulation moving bed device has at least one and includes multiple distribution/extraction plate PiThe tower of the adsorbent bed separated, wherein at least one feed F and a kind of strippant D is supplied in this device, extract at least one extract E and at least one raffinate R rich in xylol out, wherein this supply and extraction point change over, switching time is T, and determine the operating area quantity of this simulation moving bed (SMB) tower, following main region:

  • The region 1 for this xylol of desorbing between the supply and the extraction of extract E of strippant D;

    The region 2 of the compound for this raffinate of desorbing between the extraction and the supply of feed F of extract E;

    The region 3 for adsorbing at least xylol between the supply and the extraction of raffinate R of feed;

    Region 4 between the extraction and the supply of strippant D of raffinate R,Wherein the method be according to region configuration (a, b, c, d) carried out, simultaneously;

    The quantity of the adsorbent bed that a=operates in zone 1;

    The quantity of the adsorbent bed that b=operates in region 2;

    The quantity of the adsorbent bed that c=operates in area 3;

    The quantity of the adsorbent bed that d=operates in region 4;

    Below the method is implemented;

    Use the SMB of 15 adsorbent beds operated according to configuration (3,6,4,2).

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×