Fluid reactor device and method for operating a fluid reactor device

A fluid purification device, comprising:

• a heat-transfer bed comprising a heat storage material,
• a first plenum attached to a first opening of the heat-transfer bed;
• a second plenum attached to a second opening of the heat-transfer bed,
• wherein the first opening and the second opening are arranged on opposite sides of the heat-transfer bed,
• wherein the first plenum and the second plenum are configured to alternatingly supply fluid to the heat-transfer bed such that the fluid heats up and reacts while flowing through the heat storage material,
• wherein, during a time period in which one of the first plenum and the second plenum is configured to supply the fluid to the heat-transfer bed, the other one of the first plenum and the second plenum is configured to drain the reacted fluid from the heat-transfer bed, and
• wherein the first plenum extends lengthwise along a first spatial direction such that the fluid travels through the first plenum along the first spatial direction during a time period in which the first plenum is configured to supply the fluid to the heat-transfer bed;
• a heat blocking element arranged in the first plenum, wherein the heat blocking element is spaced apart from the heat-transfer bed and is spaced apart from a housing of the first plenum, wherein the heat blocking element extends beyond the first opening and is configured to lower, during the time period in which the first plenum is configured to supply the fluid to the heat-transfer bed, a speed of the fluid entering the heat-transfer bed towards the middle of the heat-transfer bed along the first spatial direction to cause an angled flow of the fluid through the heat storage material of the heat-transfer bed to lateral side portions of the heat-transfer bed.