METHOD AND DEVICE FOR CARRYING OUT ENDOTHERMIC GAS PHASE-SOLID OR GAS-SOLID REACTIONS

摘要

The invention relates to a method for carrying out endothermic gas phase-solid or gas-solid reactions, in which in a production phase in a first reactor zone, the production zone, which is at least partially filled with solid particles, the solid particles being in the form of a fixed bed, a moving bed and in sections/or in the form of a fluidised bed, the endothermic reaction is carried out and the product-containing gas flow is removed from the production zone in the region of the highest temperature level plus or minus 200 K, and the product-containing gas flow is guided through a second reactor zone, the heat return zone, which at least partially contains a fixed bed, the heat of the product-containing gas flow being stored in the fixed bed. In the following purging step, a purge gas is guided in the same flow direction through the production zone and the heat return zone, and in a heating zone, which is arranged between the production zone and the heat return zone, the heat required for the endothermic reaction is introduced into the product-containing gas flow and into the purge flow or into the purge flow. Then, in a regeneration phase, a gas flows through the two reactor zones in the reverse flow direction and heats the production zone. The invention also relates to a structured reactor comprising three zones: a production zone containing solid particles, a heating zone and a heat-return zone containing a fixed bed, the solid particles and the fixed bed consisting of different materials.