Process and reactor for exothermic heterogeneous synthesis with several catalytic beds and heat exchange

Abstract From the Canadian patent

In a process for exothermic heterogeneous synthesis for, example of ammonia, in which the synthesis gas is reacted in several catalytic beds with axial-radial or just radial flow the reacted gas is collected at the outlet from the last catalytic bed and is transferred to a reaction heat recovery system situated at the top of the reactor. An improved reactor comprises three catalytic beds with at least two inverted curve bottoms, a first quenching system with its distributor situated inside the first upper bed immediately under the unperforated portion of the internal wall of said bed, a gas/gas exchanger central to at least one of the two upper beds, a water pre-heater or a boiler inside …