The key problem of coking seriously restricts the stable and continuous operation in thermal plasma downer reactor for the coal cracking process to produce acetylene production.

热等离子体煤裂解制乙炔下行床反应器工艺的严重结焦是制约该过程稳定操作与连续运行的瓶颈。

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Owing to the short residence time, more uniform gas-solid flow and reduced backmixing of downer reactor, it can obtain more object products and the dry gas yield can be inhibited.

由于下行床具有短停留时间、气固流动更均匀和返混小的优点，能获得更高的产品收率，使干气收率受到抑制。

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New kind of gas-solid fast separator with high separating efficiency, short gas resident time, low pressure loss and long life is urgently needed to couple with concurrent downer reactor.

下行循环流化床反应器要求气固分离器具有分离效率高、气相停留时间短、压力损失小、设备磨损小等特点。

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