| 摘要 |
PURPOSE: A process and an apparatus which is advantageously used for the purification of, for example,(meth)acrylic acid,(meth)acrylic esters, maleic anhydride, phthalic anhydride and other organic compounds containing readily-blocking substances. The readily-blocking substances(hereinafter may be referred to as "cloggy substances" ) include insoluble solid matters and viscose matters such as slurry and polymer. CONSTITUTION: A purification tower for purifying liquid by contacting the liquid with gas, the purification tower comprising: (a) a shell(27); and (b) a plurality of baffles(21), each of which is fixed to an internal surface of the shell(27), (i) the each baffle(21) having a flat upper surface and a plurality of openings(30) are formed in each of the baffle(21) so that the liquid and the gas pass through the openings; (ii) any adjacent pair of the baffles(21) are arranged so that a bottom of the shell is covered by the pair of the baffles viewing in an longitudinal direction of the shell. Process and an apparatus for the purification of even an organic compound containing a readily-blocking substances, which are capable of continuously purifying such an organic substance over the long time without discontinuing operations.
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