How is process intensification applied in petrochemical processes?

Process intensification (PI) applications: Reactive distillation - combines reaction and separation in one unit (MTBE, TAME production), eliminates equilibrium limitation, reduces equipment and energy. Dividing wall columns - single shell for multiple separations, 30% energy savings, more complex control. Microreactors - enhanced heat/mass transfer for fast, exothermic reactions (e.g., nitration), improved safety through small inventory. Spinning disc reactors - thin films, millisecond residence times for precipitation, polymerization. Membrane reactors - combine reaction with selective removal (hydrogen production with Pd membrane). Heat-integrated reactors - use reaction heat directly for separation or preheating. Benefits: smaller equipment, lower energy consumption, improved safety (smaller inventory), and better product quality. Challenges: scale-up, control complexity, and limited operating flexibility. PI enables economically viable small-scale plants.