Rate of temperature and pressure reduction
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In an aromatic compound combined plant, both the temperature and pressure need to be controlled during the cooling and depressurization of the reaction system. Please explain the fundamental reasons for controlling these parameters (the more professional the explanation, the better), as well as the relationship between temperature and pressure
The main considerations are to avoid large temperature gradients (thermal stress) and pressure changes that could affect local structures, thereby increasing the fatigue life of the high-stress areas in the equipment (areas with structural discontinuities).