Patent ID: 9446368
Filing Date: 2016-09-20
CPC Classification: B01F,B01J,C10G

Claim Text:
1. A mixing device used in a fluidized catalytic cracking apparatus which mixes a feed and a catalyst, the device comprising: a cylindrical reaction container configured to continuously supply the catalyst by allowing the catalyst to fall in a vertical direction; a feed supply section configured to include a plurality of feed injection nozzles which are arranged along an outer circumference of the reaction container and through which the feed is supplied from an exterior of the reaction container to an interior of the reaction container; and a catalyst flow regulator which is arranged in the reaction container and regulates a flow of the catalyst in the vicinity of the feed injection nozzles, wherein the catalyst flow regulator has no feed supply function and is arranged to form a catalyst stream having a hollow tubular shape to be coaxial with the reaction container in the vicinity of the feed injection nozzles, wherein on an assumption that an injection angle with respect to a horizontal plane of each of the feed injection nozzles is θ, the injection angle θ is in a range of from 30 to 60 degrees, and wherein a tip of a lower portion of the catalyst flow regulator is arranged above an intersection point between an extended line of each of the feed injection nozzles and an axis of the reaction container.