Appeal No. 1998-1219
Application 08/419,317
APPENDIX
1. A process for operating an equilibrium
controlled reaction in a system utilizing a plurality of
reactors operated isothermally and in a predetermined timed
sequence, the process which comprises the following steps
performed in a cycle with each reactor;
(a) reacting a feedstock at a first pressure in a first
reactor containing an admixture of an adsorbent and a catalyst
suitable for conducting the equilibrium controlled reaction
under reaction conditions sufficient to convert the feedstock
into a more adsorbable product which is selectively adsorbed
by the adsorbent and a less adsorbable product and withdrawing
the less adsorbable product in substantially pure form under a
relatively constant flow rate at the first pressure;
(b) countercurrently depressurizing the first reactor to
a second pressure by withdrawing a mixture comprising
unreacted feedstock, a portion of the less adsorbable product
and a portion of the more adsorbable product;
(c) countercurrently purging the first reactor at the
second pressure with a weakly adsorbing purge fluid with
respect to the adsorbent wherein the weakly adsorbing purge
fluid is a fluid other than the less adsorbable product to
desorb the more adsorbable product from the adsorbent and
withdrawing a mixture comprising unreacted feedstock, a
portion of the more adsorbable product and a portion of the
less adsorbable product;
(d) countercurrently purging the first reactor at the
second pressure with the less adsorbable product to desorb the
weakly adsorbing purge fluid and withdrawing a mixture
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