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US 2020/0368706 A1Published application
Method and reactor for performing exothermic reactions
AssigneeHaldor TopsøE A/S
InventorsChristian Henrik Speth, Tommy Lykke Wind, Uffe Bach Thomsen, Anders Helbo Hansen
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Abstract
A method and reactor for performing exothermic reactions with parallel operated catalyst modules arranged in stacked order within a pressure shell and adapted to axial flow of process gas through one or more catalyst layers and at least one catalyst layer cooled by an intrabed heat exchanger.
Claims32
Method of performing exothermic catalytic reactions comprising the steps of
- passing a fresh process gas in parallel to at least two cylindrical catalyst modules arranged in stacked order, each containing in series one or more catalyst zones, at least one of the catalyst zones is cooled by an intrabed heat exchanger;
- exothermically reacting the fresh process gas flowing in axial flow direction through all of the catalyst zones to a product gas;
- in each of the cylindrical catalyst modules, cooling the exothermic reacting process gas with the fresh process gas and thereby preheating the fresh process gas by passing the fresh process gas from an outer annular space formed around each of the cylindrical catalyst modules into the intrabed heat exchanger and passing the fresh process gas through the intrabed heat exchanger in indirect heat exchange with the exothermic re-acting preheated process gas passing in axial flow direction through the cooled catalyst zone;
- and
- collecting the product gas withdrawn from the at least two catalyst modules in a central space formed centrally within the at least two stacked catalyst modules.
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A reactor for performing exothermic reactions, comprising within a cylindrical pressure shell
- at least two parallel operated cylindrical catalyst modules arranged in stacked order, each containing in series one or more catalyst zones with a catalyst layer adapted to axial flow, the catalyst layer in the at least one of the catalyst zones is cooled by an intrabed heat exchanger;
- an outer annular space between the cylindrical catalyst modules and the cylindrical pressure shell fluidly connected to the at least two parallel cylindrical catalyst modules;
- in the at least one cooled catalyst zone feed means for the fresh process gas into the inlet of the intrabed heat exchanger, fluidly connected to the outer annular space;
- the outlet of the intrabed heat exchanger is formed by open ends of the intrabed heat exchanger in the at least one cooled catalyst zone;
- covers closing the at least two parallel cylindrical catalyst modules;
- and
- outlet means from the at least two parallel cylindrical catalyst modules.
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Dependencies are inferred from the claim text.