To provide a process and an apparatus for producing high-purity (i.e. higher than 99.7%) para-xylene with an amount equal to that produced in a conventional apparatus by using an adsorbent with a volume less than that in the conventional apparatus.
In a process for separating xylene by simulated counter-current (SCC), two absorbers connected in series with a total number Nt of beds of 22 or fewer are used and operated under a predetermined operation condition (temperature, pressure, flow ratio, recirculation ratio, circulation time, average linear velocity, and moisture content). In the process of the invention, there are a case in which the process is conducted by using a new apparatus and another case in which the process is conducted by remodeling an existing apparatus.
LEINEKUGEL LE COCQ DAMIEN
JP2010535178A | 2010-11-18 | |||
JP2011161439A | 2011-08-25 | |||
JPH0639206A | 1994-02-15 | |||
JPH05201886A | 1993-08-10 | |||
JP2001507007A | 2001-05-29 | |||
JP2013001709A | 2013-01-07 | |||
JP2013049052A | 2013-03-14 | |||
JP2005511773A | 2005-04-28 | |||
JPS5824308A | 1983-02-14 |
Matsumura Naoto
Einosuke Kishimoto