PURPOSE: To make it possible to obtain a high volumetric time yield without exerting thermal damage to a product and without inducing an undersirable side reaction by heating and/or cooling the product by using at least one heat transfer unit, more particularly a film evaporator.
CONSTITUTION: The reaction mixture in a discontinuous process, for example, an esterification reaction is circulated through units 1, 13, 56, 53 and the condensate is removed through a condenser 54 and a vacuum pump 55. A circulating pump 13 transports the reaction mixture through the heat transfer unit 56 from a reactor 1 to a column 53. This column 53 is a film column or spray column or the like. After a volatile component is removed via the condenser 54 and the vacuum pump 55, the reaction mixture is made to flow down or drop to the reactor 1 from the column 53. Consequently, the high volumetric time yield is attained without exerting the thermal damage to the product and without inducting the undesirable side reaction.
BERUNHARUTO GUUTOSHIE
FURIIDORITSUHI HONMAASU
BUIRUHERUMU YOHANISUBAUAA
EEBAAHARUTO POIKAATO
RAINHORUTO ZEDERIISU
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