| 摘要 |
A PROCESS FOR THE CATALYTIC GAS-PHASE OXIDATION OF PROPENE TO ACRYLIC ACID, IN WHICH THE REACTION GAS STARTING MIXTURE IS OXIDIZED, WITH A HIGH PROPENE LOADING, IN A FIRST REACTION STAGE, OVER A FIRST FIXED-BED CATALYST WHICH IS HOUSED IN TWO SUCCESSIVE REACTION ZONES A, B, THE REACTION ZONE B BEING KEPT AT A HIGHER TEMPERATURE THAN THE REACTION ZONE A, AND THE ACROLEIN-CONTAINING PRODUCT GAS MIXTURE OF THE FIRST REACTION STAGE IS THEN OXIDIZED IN A SECOND REACTION STAGE, WITH A HIGH ACROLEIN LOADING, OVER A SECOND FIXED-BED CATALYST WHICH IS HOUSED IN TWO SUCCESSIVE REACTION ZONES C, D, THE REACTION ZONE D BEING KEPT AT A HIGHER TEMPERATURE THAN THE REACTION ZONE C.
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