Abstract: Contemplated configurations and methods for gas processing use a refluxed absorber that receives a liquid and a vapor hydrocarbon feed. The absorber further receives a stripping medium that is at least in part formed from a vapor portion of a stabilizer overhead and also receives a scrubbing medium that is at least in part formed from a liquid portion of the stabilizer overhead. Most preferably, the absorber overhead is maintained at a temperature near or even below the hydrate point of the feed.

Abstract: A method for improving efficiency of sponge absorption includes providing cold flash drum liquid to an inlet of a cold stripper to produce a cold stripper net overhead vapor stream rich in liquid petroleum gas, and separately providing hot flash drum liquid to an inlet of a hot stripper to produce a hot stripper net overhead vapor stream rich in hydrogen. The cold stripper net overhead vapor stream and the hot stripper net overhead vapor stream are separately routed to a sponge absorber to recover a liquid petroleum gas output stream using sponge oil.

Abstract: A fuel preparation system includes a fractionation unit for treating fuel containing vanadium. A gas turbine is connected to the fractionation unit to receive treated fuel. The gas turbine may deliver exhaust from the gas turbine to the fractionation unit. The fuel preparation system may include a burner for burning a heavy fuel fraction from the faction unit and for delivering exhaust from the burner to the fractionation unit. The fuel preparation unit may include a boiler to receive the heavy fuel fraction for combustion and for delivering steam to the fractionation unit.

Abstract: The invention relates to a method for recovering absorbed hydrocarbon components while absorbing acid gases from technical gases, as for example a natural gas, by means of physically active absorption agents, wherein the inventive method consists in increasing the pressure of a loaded absorption agent extracted from an adsorption device, in adding said loaded absorption agent to the top of a rectification column which consist of a lower feeding stove and of one or several lateral stoves operating at a pressure slightly greater than the absorption column pressure, in adjusting an equilibrium is said rectification column in such a way that the acid gas concentration in the absorbent agent increases in the direction away from the bottom of the column and the hydrocarbon concentration decreases in said direction, in extracting a heated hydrocarbon-poor and acid gas component-rich absorption agent from the bottom of the column and in transferring said agent to an acid gas desorption device, in extracting a hydroca

Abstract: Process for treatment of a hydrocarbon feedstock that comprises a hydrocarbon-containing liquid phase and hydrogen, in which the feedstock is separated under a pressure P1 into a liquid L1 and a gas G1, that is compressed and brought into contact with a portion of L1 under a pressure P2>2×P1 to recover a liquid L2 and a hydrogen-rich gas G2; L2 is fractionated to obtain a stabilized liquid L4a that is free of LPG and lighter products, a liquid stream of LPG, and a gas stream G4 that is recycled, and in which one of gas streams: recompressed G1 and G4 is in counter-current contact with an unstabilized liquid AL that is obtained from or extracted from L1 or L2, whereby this unstabilized liquid is supercooled by at least 10° C. below its bubble point at pressure P2.

Abstract: The present invention relates to a process and apparatus for recovering product from reactor effluent of a reactor for a hydrocarbon feedstream. An indigenous C4 stream is used as lean oil in a demethanizer, which facilitates significant cost and operational savings. C4 bottoms from a downstream depropanizer is used as lean oil recycle.

Abstract: A device comprising at least one absorber, at least one cold separator from which is extracted a gaseous phase that feeds the absorber, at least one recycling to said cold separator of at least a portion of liquid effluent that is obtained from the absorber and which is mixed with the feedstock, at least one heat exchanger for cooling the mixture prior to the recycling, at least one conduit for recovering a light hydrocarbon-enriched liquid fraction obtained from the cold separator and at least one conduit for evacuating gases from the absorber, said device being useable for the treatment of a hydrogen-rich gas or for the recovery of a hydrocarbon-enriched liquid.

Abstract: For obtaining C.sub.2+ or C.sub.3+ hydrocarbons from gas mixtures containing essentially light hydrocarbons and optionally, hydrogen or nitrogen, the gs mixture is first cooled and subjected to a phase separation, and the thus condensed components are fractionated by rectification. The uncondensed portion of the gas mixture along with the overhead product of the rectification after it has been partially condensed, is subjected to treatment in a recontacting column wherein mass transfer and heat transfer occur, and wherein C.sub.2+ or C.sub.3+ hydrocarbons are transferred from the gas phase to the liquid phase. The liquid phase thus collected is fed into the rectification column as external reflux while the remaining gas is removed, after heating, as a residual gas.

Abstract: The separation of C.sub.3+ hydrocarbons from natural gas and the like comprises subjecting the gas under pressure to partial condensation under cooling, separating the uncondensed gaseous phase and engine expanding same while the condensed liquid fraction is subjected to rectification. Additional C.sub.3+ hydrocarbons are separated from the engine expanded gaseous fraction by scrubbing and then fed to the rectification column. The resultant scrubbed gaseous fraction, whose pressure preferably is above the rectification pressure, can be delivered as C.sub.2- product stream.

Abstract: An improved method for processing the effluent of a hydrocarbon conversion zone. The invention is particularly useful in a catalytic reforming reaction, wherein practice of the invention results in an increased recovery of butane and propane. The effluent is separated into vapor and liquid components, which are then recontacted at a higher pressure. Several recontacting steps may be employed. Liquid product is then subjected to fractionation. Overhead vapor from the fractionation zone is recycled back to a recontacting step in order to recover a portion of the hydrocarbons contained therein, instead of routing the vapor to the plant fuel gas system.

Abstract: An unsaturated gas plant system includes a first unit which receives a low pressure hydrocarbon gas input and provides a liquid output and a gaseous output, an absorber which receives an unstabilized gasoline input and a lean oil input, a stripper, and a low temperature separator which provides an overhead products output to the absorber and a bottoms product output to the stripper. A high temperature separator is provided for receiving an input which includes the liquid output and the gaseous output from the first unit, bottoms product from the absorber and overhead product from the stripper and which provides a hot liquid hydrocarbon output to an upper section of the stripper and a gaseous output to the low temperature separator after passing through a condenser. A portion of the unstabilized gasoline input to the absorber is diverted to the high temperature separator input. The diverted unstabilized gasoline can be taken directly from a main column fluid catalytic conversion system fractionator.

Abstract: Carbon dioxide is removed from CO.sub.2 and hydrocarbon containing gaseous streams. In the instance where the hydrocarbons and CO.sub.2 are such that hydrocarbons would condense out during CO.sub.2 removal, the gas stream is treated in one or more stages to accomplish hydrocarbon composition control.

Abstract: A process is provided for minimizing the deposition of materials like naphthalene and tar in the ammonia liquor coolers of the primary cooler in a by-product recovery process for coking carbonaceous materials. The ammonia liquor coming from the primary cooler, wherein it is used to cool the coke oven gas, has added to it light oil before it reaches the ammonia liquor coolers, where it is cooled indirectly with water. The addition of the light oil keeps the naphthalene and tar in solution at the lower temperatures of the ammonia liquor coolers, thereby reducing or preventing the deposition of the naphthalene and tar in the ammonia liquor coolers.

Abstract: A process for hydrotreating petroleum fractions wherein a hydrogen-rich gas stream passed through the reaction zone on a once-through basis is obtained by passing a hydrogen-containing feed gas stream through an absorber which removes light paraffins. The gas separated from the reaction zone effluent by partial condensation is passed into a stripper as the stripping media used to remove these same light paraffins from the liquid used in the absorber.

Abstract: Process with improved efficacy for the separation and recovery of desired liquid and vapor constituents from a feed stream containing such constituents. The feed stream is contacted with two separate and distinct lean oils by upward passage through an absorption zone. Resultant rich oil passes to a stripping zone and then to a fractionation zone. A first lean oil is withdrawn from fractionation zone bottoms and enters the absorption zone superior to the entry of a second lean oil. The second lean oil is withdrawn from the stripping zone and passed to the absorption zone. A stripped vapor is withdrawn from the stripping zone and is mixed with the feed. This mixture is partially condensed in a cooling zone and then separated into liquid and vapor phases in a separation zone. The vapor phase is then withdrawn from the separation zone and is introduced adjacent the lowermost point of the absorption zone.