| 摘要 |
A tube reactor (2) for performing exothermic gas phase reactions comprising a reaction tube bundle (8), that extends in a sealed manner between two tube end plates (4, 6), that carries a reaction gas and is surrounded by a heat carrier inside a surrounding reactor shell (10). The tube reactor also includes a cowl (18, 20) that spans the respective tube plates (4, 6) and is connected to a gas inlet and a gas discharge line, respectively. Inside the cowl (18) on the gas inlet side adjacent to a first gas supply chamber (28), connected to the inside of the reaction tubes (16), is located a separately fed second gas supply chamber (30) with its own tube end plate (32) that is connected to separate gas supply tubes (34) suitable for a second reaction gas. The separate gas supply tubes reach into the gas inlet end or reach to directly before the gas inlet ends of the reaction tubes (16). This avoids early admixing of an explosion-critical reactant into the reaction gas stream using relatively simple and practical means of construction, which in turn improves the ability to load the reaction gas stream with this reactant.
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