1results about How to "Reduce recirculation air volume" patented technology

A series-parallel process system for the hydrogenation of ethyl acetate to ethanol belongs to the technical field of ethyl acetate hydrogenation to ethanol production. The system comprises multiple subsystems connected in series or parallel. In each subsystem, the tube-side outlet of the feed heat exchanger is connected to the inlet of the vaporizer, and its outlet pipe is connected to the inlet of the reactor. The reactor outlet is connected to the shell-side inlet of the feed heat exchanger, and the shell-side outlet is connected to the separator. In this system, ethyl acetate enters the multi-stage reactors in parallel, while hydrogen and recirculation gas enter the multi-stage reactors in series. With the same hydrogen-to-ester ratio, the recirculation gas volume is reduced by more than half, significantly reducing the energy consumption of the recirculation unit. Simultaneous entry of ethyl acetate into the multi-stage reactors facilitates adjustment of reactor loads and synchronized catalyst aging. If a single-stage reactor or equipment fails or requires catalyst replacement, it can be shut down individually for troubleshooting while the other stage continues operation. This system enables large-scale production capacity.