| 摘要 |
<p>SUBJECT OF THE INVENTION IS A METHOD FOR THE PRODUCTION OF A CYANOPYRIDINE, COMPRISING THE STEPS OF (A) PROVIDING A COLUMN (2) COMPRISING AN ABSORBER SECTION (3) AND A STRIPPING SECTION (4), THE ABSORBER SECTION (3) BEING POSITIONED ABOVE THE STRIPPING SECTION (4), SUCH THAT LIQUID WHICH PASSED THE ABSORBER SECTION (3) ENTERS THE STRIPPING SECTION (4), (B) FEEDING A GASEOUS PHASE COMPRISING THE CYANOPYRIDINE INTO THE COLUMN (2), (C) CONTACTING THE GASEOUS PHASE WITH AN AQUEOUS SOLUTION IN THE ABSORBER SECTION (3), SUCH THAT AT LEAST A PORTION OF THE CYANOPYRIDINE IS DISSOLVED IN THE AQUEOUS SOLUTION, (D) STRIPPING THE AQUEOUS SOLUTION OBTAINED FROM THE ABSORBER SECTION (3) IN STEP (C) WITH A STRIPPING GAS IN THE STRIPPING SECTION (4), AND (E) ELUTING AN AQUEOUS SOLUTION COMPRISING THE CYANOPYRIDINE FROM THE BOTTOM OF THE COLUMN (2). ANOTHER SUBJECT OF THE INVENTION IS A DEVICE FOR CARRYING OUT THE INVENTION. THE MOST ILLUSTRATIVE DRAWING IS</p> |
