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首页> 外文会议>Italian Conference on Chemical and Process Engineering(ICheaP-6) vol.2; 20030608-11; Pisa(IT) >New catalytic autothermal reactor to waste gases treatment- concept and design -
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New catalytic autothermal reactor to waste gases treatment- concept and design -

机译：用于废气处理的新型催化自热反应器-概念和设计-

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摘要

This work is centered in the development, conception and optimization of a new fixed bed reactor specially designed for the treatment of polluted gaseous effluents: the Auto Cyclic Reactor (ACR). The new concept introduced in the Auto-Cyclic Reactor (ACR) obliges the flow mixture to reverse direction inside the reactor in order to promote the heat transfer from the hot mixture to the cold inlet feed, preventing then the called creeping phenomenon which consists in the movement of the reaction front toward the outlet of the reactor. In fact, due to the low concentration of the reactants in the feed stream (pollutants), the heat generated by the chemical reaction is not enough to ensure the minimum energy required for reaction. Therefore, the cold feed stream cools down the catalytic layer and the reaction front moves to the exit of the reactor shutting down the process. In the new ACR concept, when the reaction front moves up to the exit of the reactor, the heat is transferred to the entrance to warm up the feed stream being the reaction re-ignited. The main advantages of the ACR are its simplicity and compactness, leading to lower initial investments and also lower maintenance and operating costs than the reverse flow concept.
机译：这项工作的重点是自动循环反应器（ACR），该反应器是专门设计用于处理污染的气态废水的新型固定床反应器的开发，构思和优化。自动循环反应器（ACR）中引入的新概念要求流动混合物在反应器内部反向流动，以促进热量从热混合物传递到冷进料，从而防止了所谓的蠕变现象，该现象包括反应前沿向反应器出口移动。实际上，由于进料流中反应物（污染物）的浓度低，化学反应产生的热量不足以确保反应所需的最低能量。因此，冷进料流冷却了催化剂层，并且反应前沿移至反应器的出口，从而终止了该过程。在新的ACR概念中，当反应前沿向上移动到反应器出口时，热量转移到入口以加热进料流，使反应重新点燃。 ACR的主要优点是它的简单性和紧凑性，与逆流概念相比，它减少了初期投资，并降低了维护和运营成本。

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