摘要:
METHOD AND APPARATUS FOR CONTACTING TWO FLUIDS IN A FLUID-SOLIDS CONTACTING ZONE, SUCH AS AN ADSORPTION ZONE OR A REACTION ZONE. A FIRST FLUID IS DISCHARGED DOWNWARDLY FROM A PASSAGEWAY SPACED ABOVE A BED OF PARTICULATED SOLIDS. FROM A NOZZLE SPACED BELOW THE PASSAGEWAY, A SECOND FLUID IS DISCHARGED UPWARD INTO THE FIRST FLUID DISCHARGED IN A MANNER SUFFICIENT TO PRODUCE A SPRAY OF MIXED FIRST AND SECOND FLUID WHICH PASSES INTO THE BED BELOW. SPECIFIC APPLICATION IS IN HYDROGENATION, HYDROTREATING, HYDROCRACKING, AND HYDRODEALKYLATION REACTION ZONES, WHEREIN A HYDROGEN STREAM IS UTILIZED FOR THE THERMAL QUENCH OF REACTANT HYDROCARBON BETWEEN CATALYST BEDS.
摘要:
In a hydrocarbon conversion process wherein a gaseous reactant and hydrocarbon to be converted, are reacted under conversion conditions, a control system for maintaining the level of conversion of the feed mixture at a level responsive to the availability of the gaseous reactant. Conversion severity is adjusted by temperature control on the feed mixture, reset by differential temperature control across the reaction zone. Unconverted product is recycled to the reaction zone from a lower section of a fractionation column, and a level control signal is sent therefrom to a selector relay which also receives a signal indicative of the pressure within the reaction zone. The selector relay develops an output signal which is a function of the pressure signal when the pressure is below a predetermined level, and which is a function of the level signal when the pressure is at or above the predetermined level. The selector output signal is sent to a summing relay which also receives a flow signal indicative of the flow of makeup reactant gas to the process of net gas product leaving the process. The summing relay then resets the differential temperature controller which in turn resets the temperature controller.
摘要:
A PLURALITY OF SUPERPOSED REACTOR SECTIONS, WITH EACH HAVING AN ANNULAR-FORM CATALYST SECTION, ARE PROVIDED WITHIN A PARTITIONED VERTICALLY ELONGATED CHAMBER SUCH THAT CATALYST PARTICLES CAN READILY MOVE BY GRAVITY FROM THE UPPER SECTION DOWN THROUGH THE LOWERMOST SECTION. UNIFORMLY SPACED APART SMALL DIAMETER CATALYST TRANSFER CONDUITS PROVIDE FOR THE DOWNWARD MOVEMENT OF CATALYST INTO AND OUT OF THE CHAMBER, AS WELL AS BETWEEN ADJACENT SECTIONS IN A MANNER TO SUBSTANTIALLY PRECLUDE REACTANT STREAM FLOW BETWEEN REACTOR SECTIONS THROUGH SUCH CONDUITS. ALSO, A PREFERRED CONSTRUCTION UTILIZES SPECIAL FLAT FACED, WEDGE-WIRE, TO FORM THE SCREENING FOR RETAINING THE CATALYST IN THE ANNULAR-FORM CATALYST ZONES AND THE FLATFACED WIRED FORMING THE SCREENING ARE POSITIONED VERTICALLY SUCH THAT DOWNWARDLY MOVING CATALYST WILL NOT HAVE TO RUB OVER A ROUGH SURFACE AND BE SUBJECTED TO ATTRITION.
摘要:
A control system for an engine system which has means for optimizing the performance of the converter in the engine system by regulating a set point of a controller. In one embodiment, secondary air flow to the converter is the variable utilized to control the performance of the converter and is regulated in response to the ratio of gas flow in respect to the engine of the system to secondary gas flow to the converter. In another embodiment the air to fuel ratio to the engine is utilized as a variable to control the performance of the converter.
摘要:
A FLUID DISTRIBUTING MEANS FOR USE IN FLUID-SOLIDS CONTACT CHAMBERS CONTAINING A PLURALITY OF FIXED BEDS OF PARTICULATED CONTACT SOLIDS. THE MEANS COMPRISES A PLURALITY OF FLUID DOWNCOMERS WHICH ENCOMPASS OPENINGS IN AN IMPERFORATE DECK PLATE AND RISE A FINITE DISTANCE ABOVE THE PLATE. THE DOWNCOMERS ARE PERFORATED TO PROVIDE GREATER OPEN AREA FOR FLUID FLOW WITH RESPECT TO INCREASING DISTANCE FROM THE FACE OF THE PLATE. A PREFERRED EMBODIMENT IS A DECK CONTAINING DOWNCOMER MEANS COMPRISING
SCREEN MEANS HAVING SCREEN OPENINGS OF INCREASING DIMENSION WITH RESPECT TO INCREASING DISTANCE FROM THE DECK PLATE. A FURTHER PREFERRED EMBODIMENT IS A DECK CONTAINING DOWNCOMER MEANS COMPRISING TUBULAR SCREEN MEANS FORMED BY THE HELICAL WINDING OF A CONTINUOUS ROD MEMBER AROUND A PLURALITY OF SPACED LONGITUDINAL BAR MEMBERS TO PRODUCE A CONTINUOUS HELICAL SLOT OPENING OF CONTINUOUSLY INCREASING SLOT WIDTH.
摘要:
CONTROL SYSTEM FOR A HYDROCRACKING REACTION ZONE OPERATING BY TEMPERATURE CONTROL ON THE FEED INLET, RESET BY TEMPERATURE DIFFERENTIAL ACROSS THE CATALYST BEDS. THE DESIRED TEMPERATURE DIFFERENTIAL IS DETERMINED BY A COMBINATION FRACTIONATOR-LEVEL CONTROL SIGNAL AND GAS MAKE FLOW CONTROL SIGNAL.
摘要:
A tubular screen means formed by the helical winding and attachment of a continuous rod member around a plurality of spaced longitudinal bar members in a manner sufficient to provide a continuous helical slot opening of continuously increasing slot width.
摘要:
AN APPARATUS FOR CONTACTING TWO FLUIDS IN A FLUID-SOLIDS CONTACTING ZONE, SUCH AS AN ADSORPTION ZONE OR A REACTION ZONE. A FIRST FLUID IS DISCHARGED DOWNWARDLY FROM A CONDUIT SPACED ABOVE A BED OF PARTICULATED SOLIDS. FROM A NOZZLE SPACED BELOW THE CONDUIT, SECOND FLUID IS DISCHARGED UPWARD INTO THE FIRST FLUID DISCHARGE IN A MANNER SUFFICIENT TO PRODUCE A SPRAY OF MIXED FIRST AND SECOND FLUID WHICH PASSES INTO THE BED BELOW. SPECIFIC APPLICATION IS IN HYDROGENATION, HYDROTREATING, HYDROCRACKING, AND HYDRODEALKYLATION REACTION ZONES, WHEREIN A HYDROGEN STREAM IS UTILIZED FOR THE THERMAL QUENCH OF REACTANT HYDROCARBON BETWEEN CATALYST BEDS.
摘要:
AN APPARATUS FOR CONTACTING TWO FLUIDS IN A FLUID-SOLIDS CONTACTING ZONE SUCH AS AN ADSORPTION ZONE OR A REACTION ZONE. A FIRST FLUID IS PASSED DOWNWARDLY INTO A DISTRIBUTOR DOWNCOMER AND A SECOND FLUID IS PASSED UPWARDLY INTO THE DOWNCOMER VIA AN INLET NOZZLE CONTAINED WITHIN THE DOWNCOMER. A RESULTING MIXTURE OF FIRST AND SECOND FLUID PASSES DOWNFLOW THROUGH THE ANNULUS CONFINED BETWEEN THE DOWNCOMER WALL AND THE INLET NOZZLE, AND ENTERS A BED FO PARTICULATED SOLIDS BELOW. THE APPARATUS IS ALSO APPLICABLE TO UPFLOW PROCESSING THROUGH BEDS OF PARTICULATED SOLIDS. SPECIFIC APPLICATION IS IN HYDROGENATION, HYDROTREATING, HYDROCRACKING, AND HYDRODEALKYLATION REACTION ZONES, WHEREIN A HYDROGEN STREAM IS UTILIZED FOR THE THERMAL QUENCH OF REACTANT HYDROCARBON BETWEEN CATALYST BEDS.