Gas seal for reactors employing gas guide bodies and reactor having the gas seal

In a reactor for treating strands or strips of material having a surface, the reactor including:

• an outer jacket extending parallel to a transportation direction of the strands or strips of the material;
• two opposing walls, at least one of the walls having an opening for passing the strands or strips of material therethrough;
• devices for transporting the strands or strips of material through the reactor;
• devices for transporting the strands or strips of material relative to the reactor;
• devices for transporting gases relative to a reactor space;
• and
• a gas feedline and distribution device disposed at the opening and having gas discharge openings, the gas feedline and distribution device being configured to outflow a gas stream at the gas discharge openings to generate a gas curtain for preventing undesirable substances from crossing the gas curtain relative to the reactor space;
• a gas seal, comprising:
• a deflector or gas guide body of the gas feedline and distribution device:
• extending toward an interior of the reactor;
• disposed behind the gas discharge openings of the gas feedline and distribution device relative to the interior of the reactor;
• and
• disposed at a distance from the respective surfaces of the strands or strips of material.