Alkane catalytic dehydrogenation reaction device and catalyst regeneration device

An alkane dehydrogenation circulating fluidized bed device, comprising a reaction device,

• wherein the reaction device comprises a reactor and a reaction disengager, the reaction disengager is communicated with the reactor, a reaction feedstock inlet is arranged on the reactor,
• wherein a catalyst distributor is arranged in the reactor so that a catalyst is sprayed into the reactor along a direction from a peripheral wall of the reactor to a center axis of the reactor through the catalyst distributor, and the reaction feedstock inlet is located below the catalyst distributor;
• wherein, a primary cyclone separator, a primary cyclone riser and a cover body are arranged in the reaction disengager;
• the cover body comprises an upper part and a lower part, the upper part of the cover body is a truncated cone, and the lower part of the cover body is below a lower base of the truncated cone;
• an area of an opening in a lowermost end of the cover body is greater than an area of an outlet of the reactor;
• a circumference of an upper base of the truncated cone is connected with a periphery of the primary cyclone riser, or the circumference of the upper base of the truncated cone is connected with a periphery of the primary cyclone separator above an inlet of the primary cyclone separator;
• and
• a part or whole of the primary cyclone separator is located in the cover body.