Fig. 1 shows isothermal dehydrogenation which was pioneered by BASF and has been used by them for many years. The reactor is built like a shell-and-tube heat exchanger. Ethylbenzene and steam flow through the tubes, which are packed with catalyst. The heat of reaction is supplied by hot flue gas on the shell side of the reactor-exchanger. d2 Fresh EB Recycled EB Steam Steam Recirculation of flue gas or molten salt Condensate Vent gas Crude styrene Steam condensate Fig. 1 Isothermal dehydrogenation of ethylbenzene (EB) (a) Heater, (b) Steam superheater, (c) Reactor, (d) Heat exchanger, and (e) Condenser Why the reactor-exchanger is used for the reaction. Clearly explain the reason.

pls read the question carefully, i posted the same question more than one time but with different requirement. the subject name is Process plant design and safety, it's chemical engineering subject

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Question 3. choose one mass analyser from the following – quadrupole, time of flight, ion trap, FT-ICR, orbitrap – and describe the principles of operation, pros and cons, typical applications etc. Provide as much detail as you can, including diagrams where appropriate....    Diagrams must draw if not I will dislike okkk