摘要:
L'invention concerne un dispositif d'ancrage de coke (10) destiné à retenir le coke se formant sur une paroi d'une enceinte d'une unité de craquage catalytique fluide. Ce dispositif (10) comprend un tube creux (101) de longueur prédéterminée et un élément d'ancrage de coke (102) solidaire de la surface externe (101b) du tube creux. En particulier, le dispositif d'ancrage est fixé sur une paroi double à protéger (30), formée d'une paroi interne (301) et d'une paroi externe (302) définissant entre elles une chambre (303). Une pluralité de dispositifs d'ancrage (10) associés chacun à un orifice (305) de la paroi externe (302) sont fixés sur celle-ci, chaque orifice (305) étant prolongé par un tube creux (101) d'un dispositif d'ancrage (10). Cette paroi double (30) peut former l'extrémité inférieure d'une conduite d'évacuation des gaz d'un cyclone de séparation mécanique de particules en suspension dans un fluide gazeux, notamment destiné à une unité de craquage catalytique fluide.
摘要:
A catalyst cooler for cooling regenerated catalyst in a regenerator associated with a fluid catalytic cracking unit. The catalyst cooler includes a first passage for transporting hot regenerated catalyst away from the regenerator and a second passage for returning cooled regenerated catalyst to the regenerator. The catalyst cooler also includes at least one heat exchanger. The second passage may be disposed within the first passage, or the first and second passage may each occupy a portion of a horizontal cross section of the catalyst cooler.
摘要:
An oxygenate to olefins conversion reactor system with a riser reactor having an inlet for feed, an inlet for catalyst and an outlet; and a gas/solids separator having an inlet for the reactor effluent, an outlet for products, and an outlet for catalyst; wherein the gas/solids separator inlet is directly coupled to the riser reactor outlet such that all of the reactor effluent directly enters the gas/solids separator.
摘要:
Apparatuses and processes for converting an oxygenate feedstock, such as methanol and dimethyl ether, in a fluidized bed containing a catalyst to hydrocarbons, such as gasoline boiling components, olefins and aromatics are provided herein.
摘要:
The present invention relates to a process for modifying particles. The object is achieved by a process for modifying particles (P1) within an apparatus (Al) which comprises at least two inlets for gaseous streams (Gl) and (G2), a gas inlet zone (IZ), a reactive zone (RZ) located below the gas inlet zone (IZ), a sample holder (SH) located below the reactive zone (RZ) and an outlet (01) located at the bottom of (Al), wherein the process comprises feeding at least one pulse of a gaseous stream (G2), comprising at least one inert gas and/or reactive gas, to carry particles (P1) into the reactive zone (RZ). This pulse of a gaseous stream (G2) is fed into apparatus (Al) at a position below the sample holder (SH).
摘要:
The cooling coils used in a commercial oxidation or ammoxidation reactors can be made more closely packed by providing the individual courses defining the cooling coil in a transverse arrangement rather than a linear alignment.
摘要:
Methods and fuel processing apparatuses for upgrading a pyrolysis oil stream and a hydrocarbon stream are provided herein. In an embodiment, a method for upgrading a pyrolysis oil stream and a hydrocarbon stream includes providing a pyrolysis oil stream and providing a hydrocarbon stream separate from the pyrolysis oil stream. The pyrolysis oil stream and the hydrocarbon stream are mixed in a mixing zone and in the absence of a particulate cracking catalyst. The pyrolysis oil stream and the hydrocarbon stream are introduced in a substantially common direction into the mixing zone to form a mixture of the pyrolysis oil stream and the hydrocarbon stream. The mixture of the pyrolysis oil stream and the hydrocarbon stream are catalytically cracked in the presence of the particulate cracking catalyst.
摘要:
Disclosed herein are methods for dehydrogenation of alkanes to olefins by co-injecting the alkane feed with hydrogen. The present methods provide the improved feed conversion, desired product selectivity, total olefins in product stream, and lower catalyst deactivation rate.
摘要:
A feedstock conversion system including an integrated two-stage fluid bed thermochemical reaction apparatus (50) has first and second reaction chambers (110, 120) side-by-side and physically separated from one another in one vessel (100) by a partition (130). One or more clusters of heat pipes (400) pass through the partition (130) between the first and second chambers (110, 120) for efficient indirect heat transfer between first and second fluid bed reaction stages (200, 300) and materials therein. The system includes devices for solids transfer between the two reaction chambers (110, 120) to enhance feedstock conversion.
摘要:
An improved process and an improved apparatus for minimizing attrition of catalyst particles, especially propane dehydrogenation catalyst particles, entrained in a combined flow of such particles and an entraining gas in a catalyst recovery means during separation of such particles from the entraining gas, by use of a pre-treatment step in which the combined flow is at a rate between 7.6 and 15.2 meters per second are provided.