摘要:
A mixing device used in a fluidized catalytic cracking apparatus which mixes feed and a catalyst includes a cylindrical reaction container 5 which supplies a catalyst S in a vertical direction; a plurality of feed injection nozzles 6a arranged along an outer circumference of the reaction container 5; and a catalyst flow regulator 7 which is provided in the reaction container 5 and regulates a flow of the catalyst S in the vicinity of the feed injection nozzles 6a. The catalyst flow regulator 7 has no feed supply function and forms a catalyst moving bed having a hollow tubular shape which is coaxial with the reaction container 5 in the vicinity of the feed injection nozzles 6a. The catalyst flow regulator 7 can effectively prevent backward flow of injected fuel. Although the mixing device has a simple structure, it has a high cracking rate and maintenance of the fluidized catalytic cracking apparatus can be performed easier.
摘要:
Methods and systems for promoting hydrogen gas distribution within cellulosic biomass solids during hydrothermal digestion. One exemplary method can comprise: heating a first portion of cellulosic biomass solids (16) being contacted by a continuous liquid phase (14) and a second portion of cellulosic biomass solids (10) being contacted by a continuous gas phase (14') in the presence of an upwardly directed flow of molecular hydrogen and a slurry catalyst capable of activating molecular hydrogen in the continuous liquid phase (14); conveying (24) at least a portion of the continuous liquid phase (14) and at least a portion of the slurry catalyst to a location within the continuous gas phase (14') above at least a portion of the cellulosic biomass solids (10); and after conveying the continuous liquid phase (14) and the slurry catalyst, releasing them such that they contact the second portion of cellulosic biomass solids.
摘要:
The invention relates to a device and method for densely and homogeneously loading catalyst into the annular space of bayonet tubes, used in a steam reforming reactor, said device using removable retarder elements.
摘要:
The present invention concerns a process for loading particulate material (7) into at least one narrow vertical container (1,1') having an opening to the outside in its bottom part, which comprises inducing an upflow of air through said container, and loading said particulate material into the container from the upper part thereof in such a way that said particulate material falls downwardly counter currently to said upflow of air. According to the invention, no physical device or air-supplying conduit is present inside the inner section of the container (1, 1') to be filled when the particulate material is loaded, and said upflowing air is sourced from the bottom opening of the container and is induced by sucking air from the upper part of the container using a vacuum system. The invention allows for the precise control of the impact velocity of the particulate material (7) as it arrives in the bottom of the container (1, 1')
摘要:
The invention relates to a system (1) for distributing solid particles in order to load an enclosure with solid particles, including: a device (30) for supporting a device (10) for loading solid particles, said supporting device being arranged such as to maintain the loading device in the enclosure, and a sensor-supporting device (40), said sensor (46) intended for collecting information on the loading of the enclosure, and in which the system for distributing solid particles is arranged such that the supporting device and the sensor-supporting device can be mounted on the device for loading solid particles, while being movable relative to said loading device.
摘要:
This specification discloses an operational continuous process to convert lignin as found in ligno-cellulosic biomass before or after converting at least some of the carbohydrates. The continuous process has been demonstrated to create a slurry comprised of lignin, raise the slurry comprised of lignin to ultra-high pressure, deoxygenate the lignin in a lignin conversion reactor over a catalyst which is not a fixed bed without producing char. The conversion products of the carbohydrates or lignin can be further processed into polyester intermediates for use in polyester preforms and bottles.
摘要:
This specification discloses an operational continuous process to convert lignin as found in ligno-cellulosic biomass before or after converting at least some of the carbohydrates. The continuous process has been demonstrated to create a slurry comprised of lignin, raise the slurry comprised of lignin to ultra-high pressure, deoxygenate the lignin in a lignin conversion reactor over a catalyst which is not a fixed bed without producing char. The conversion products of the carbohydrates or lignin can be further processed into polyester intermediates for use in polyester preforms and bottles.