Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 4787967 | Process for two-phase fluid catalytic cracking system A fluid catalytic cracking (FCC) process and apparatus which employs relatively more elutriatable catalyst particles comprising intermediate pore zeolite, particularly ZSM-5, and relatively less elutriatable catalyst particles comprising large pore zeolit... | 11/29/1988 |
| 4787968 | Catalyst demetallization and process for using demetallized catalyst An improved catalyst demetallization process involves chlorinating the metal contaminated catalyst at elevated temperatures and contacting the chlorinated catalyst with a liquid aqueous composition to produce a demetallized catalyst. Improved catalytic ac... | 11/29/1988 |
| 4786401 | Liquid sludge disposal process Hydrocarbon-containing liquid waste sludges from refinery waste streams can be disposed of by blending with the feedstock being passed to a fluid catalytic cracking unit. Preferably, the sludge is premixed with a hydrocarbon, such as a light oil, prior to... | 11/22/1988 |
| 4784748 | FCC unit combined with a circulating fluid bed combustor The invention combines two unit operations i.e. fluid catalytic cracking (FCC) and circulating fluid bed (CFB) boiler technologies. The circulating solid inventory of the CFB boiler is introduced to the bottom of a conventional FCC unit to supply the endo... | 11/15/1988 |
| 4784752 | Method for suppressing the poisoning effects of contaminant metals on cracking catalysts in fluid catalytic cracking Poisoning of a cracking catalyst by contaminant metals such as nickel, vanadium and iron during fluid catalytic cracking of hydrocarbon charge stock containing the contaminant metals is suppressed by depositing minor amounts of a bismuth-containing passiv... | 11/15/1988 |
| 4781815 | Catalytic cracking process Catalytic cracking catalysts, the process of their preparation and the process of their use. The cracking catalyst comprises a zeolite having a mole ratio of oxides in the dehydrated state of (0.85-1.1) M2/n O:Al2 O3 :xSiO... | 11/01/1988 |
| 4778665 | Abatement of NOx in exhaust gases Abatement of nitrogen oxides in an industrial exhaust gas is effected by reduction of the nitrogen oxides with ammonia in the presence of a catalyst comprising a porous crystalline siliceous solid such as a ZSM-5 type zeolite. Fast responses to changes of... | 10/18/1988 |
| 4775461 | Cracking process employing catalysts comprising pillared clays A process for catalytic cracking using a catalyst obtained by preparing pillared interlayered clay materials comprises the steps of contacting a smectite containing material, preferably bentonite, with a solution comprising at least one of ammonium and al... | 10/04/1988 |
| 4770765 | Hydrocarbon cracking process and catalyst for use in same In a catalytic cracking process which includes contacting a hydrocarbon feedstock in a contacting zone in the presence of solid composition containing molecular sieve-containing catalyst capable of promoting hydrocarbon cracking at conditions effective to... | 09/13/1988 |
| 4764268 | Fluid catalytic cracking of vacuum gas oil with a refractory fluid quench Vacuum gas oil is catalytically cracked in the presence of a fluid zeolite catalyst in a riser reactor and then quenched before discharging into the disengaging section of a stripper vessel. The quench fluid is injected into the last 10 vol % of the riser... | 08/16/1988 |
| 4756819 | Process for the thermal treatment of hydrocarbon charges in the presence of additives which reduce coke formation This invention concerns a process for the thermal treatment of hydrocarbon charges having a high content of asphaltenes in the presence of additives which prevent coke formation. The additive according to the invention is a salt of a metal selected from V... | 07/12/1988 |
| 4757039 | Dual function heat withdrawal in a fluidized catalytic cracking-regeneration process A process and apparatus for cooling FCC catalyst that provides two modes of operation for a remote heat exchanger type cooler. In the first mode the exchanger is operated in a backmix fashion where catalyst is circulated between the cooler and a disengage... | 07/12/1988 |
| 4755282 | Process for the reduction of NH3 in regeneration zone off gas by select recycle of certain-sized NH3 decomposition catalysts This process discloses a reduction in the content of ammonia in a regeneration zone off gas of a fluid catalytic cracking unit by the select recycle of certain sized ammonia decomposition catalyst particles. The ammonia decomposition may be aided by injec... | 07/05/1988 |
| 4753721 | Process for resid hydrotreating employing feed distributor A special feed distributor is provided to radially, annularly, and uniformly feed and distribute oil and gas in a hydroprocessing unit, such as an ebullated bed reactor. In the preferred form, the feed distributor comprises an octagonal manifold with tang... | 06/28/1988 |
| 4752377 | Fluid catalyst process with steam injection into catalyst standpipe In a fluid catalytic cracking unit where oil and steam are mixed with regenerated catalyst the individual and combined improvements: (1) extending the oil-steam line into the riser reactor at least to a point where the axis of the riser is intersected by ... | 06/21/1988 |
| 4750987 | Immobilization of vanadia deposited on catalytic materials during carbo-metallic oil conversion A process is disclosed for the conversion of a hydrocarbon oil feed having a significant content of vanadium to lighter oil products by contacting the feed under conversion conditions in a conversion zone with a catalyst containing a metal additive to imm... | 06/14/1988 |
| 4749470 | Residuum fluid catalytic cracking process and apparatus using microwave energy A fluid catalytic cracking (FCC) process and apparatus which exposes a residuum to microwave energy to activate the residuum prior to feeding to a fluid catalytic cracking riser. The process and apparatus also cracks a portion of a light hydrocarbon strea... | 06/07/1988 |
| 4749471 | Closed FCC cyclone process There is disclosed a fluid catalytic cracking (FCC) apparatus and process comprising a reactor riser zone, primary and secondary cyclones, connected in series to the riser zone, and a stripping zone. The riser zone, the primary and the secondary cyclones,... | 06/07/1988 |
| 4747935 | Process for the catalytic cracking of feedstocks containing nitrogen Hydrocarbon feedstocks containing relatively high levels of nitrogen contaminants are converted by catalytic cracking to products of lower average molecular weight by contacting the feedstock with a mixture of a cracking catalyst and separate particles of... | 05/31/1988 |
| 4746459 | Self-dispersing tin oxide sols An aqueous sol composition from the group consisting of antimony and tin sols useful in restoring the activity of metal contaminated molecular sieve cracking catalysts which comprises a major portion of an aqueous antimony sol or tin sol containing betwee... | 05/24/1988 |
| 4744883 | Production of synthesis gas and related products via the cracking of heavy oil feeds In a reduced crude conversion the catalyst is regenerated with mixture of oxygen-enriched gas and H2 O either as steam or preferably as water to provide additional expansion and facilitate fluidization, while converting coke on catalyst to CO a... | 05/17/1988 |
| 4744962 | Process for the reduction of ammonia in regeneration zone off gas by select addition of NOx to the regeneration zone or to the regeneration zone off gas A regeneration zone for fluid catalytic cracking contains ammonia (NH3) when the regeneration zone is operated in a partial combustion mode as defined by a content of CO of between 1 and 6 percent by volume. If the ammonia is not removed from t... | 05/17/1988 |
| 4743358 | Method for suppressing the harmful effects of metal contaminants on hydrocarbon conversion catalysts using a strontium colloid system A strontium colloid system is introduced into a hydrocarbon conversion process to suppress the harmful effects of one or more metal contaminants in the hydrocarbon feedstock on the active component(s) of the catalyst used in said process. The strontium co... | 05/10/1988 |
| 4743357 | Catalytic process for production of light hydrocarbons by treatment of heavy hydrocarbons with water A process for converting heavy hydrocarbons into light hydrocarbons which comprises contacting, in a reaction zone, a heavy hydrocarbon having an API gravity at 25° C. of less than about 20, such as Boscan heavy crude oil or tar sand bitumen, with a liqu... | 05/10/1988 |
| 4735705 | Composition of matter and process useful for conversion of hydrocarbons An improved process for converting hydrocarbons using a catalyst which is periodically regenerated to remove carbonaceous deposits, the catalyst being comprised of a mixture containing, as a major component, solid particles capable of promoting hydrocarbo... | 04/05/1988 |
| 4731174 | Process for cracking nitrogen-containing feedstocks Hydrocarbon feedstocks containing relatively high levels of nitrogen contaminants are converted to products of lower average molecular weight by first mixing the feedstock with a dicarboxylic acid such as oxalic acid and then contacting the resultant mixt... | 03/15/1988 |
| 4729825 | Method and apparatus for contacting feed materials with fluidized solids A method of feeding a mixture of fluidized solids, such as cracking catalyst, and a fluidized feed material to be contacted therewith, such as a hydrocarbon feedstock to be cracked, into a contacting zone. In another aspect, method and apparatus useful in... | 03/08/1988 |
| 4727053 | Passivation of metal contaminated cracking catalysts A novel cracking catalyst, a method of preparing same and an improved hydrocarbon cracking process are provided wherein adverse effects of metals such as nickel, vanadium, iron, copper and cobalt in the cracking catalyst are precluded or mitigated by cont... | 02/23/1988 |
| 4717466 | Multiple riser fluidized catalytic cracking process utilizing hydrogen and carbon-hydrogen contributing fragments The fluidized catalytic cracking process described herein is undertaken in a first and a second riser reaction zone in which a variety of hydrocarbon conversion reactions take place, at least one stripping zone in which entrained hydrocarbon material is r... | 01/05/1988 |
| 4717467 | Process for mixing fluid catalytic cracking hydrocarbon feed and catalyst A process and apparatus for mixing fluid catalytic cracking hydrocarbon feed and catalyst is disclosed. The invention passes lift gas through a first conduit which is axially aligned with a second conduit. A downstream end of the first conduit and an upst... | 01/05/1988 |
| 4714541 | Method and apparatus for improving cyclone efficiency Disclosed is a method and apparatus for improving the efficiency of a cyclone by the addition of a rough-cut device to a gas outlet tube of the cyclone. The rough-cut device includes a tangentially located dust collector that gradually reduces in size and... | 12/22/1987 |
| 4713169 | Fluid feed method A fluid feeding apparatus and method for feeding a fluid to a point beyond the apparatus, wherein a hollow member is provided having an interior surface which defines a chamber having a first fluid therein. The interior surface tapers toward the chamber a... | 12/15/1987 |
| 4708785 | Carbo-metallic oil conversion Heat balance in a residual oil conversion unit can be controlled as a function of Conradson carbon of the feed, water added to the feed, hydrogen in the coke produced, CO2 /CO ratio, etc. Preferably, riser outlet temperature can be controlled t... | 11/24/1987 |
| 4707461 | Vanadium passivation in a hydrocarbon catalytic cracking process Hydrocarbons containing vanadium are converted to lower boiling fractions employing a zeolitic cracking catalyst containing a significant concentration of a calcium-containing additive e.g. calcium corbonate dolomite and amorphous as a vanadium passivatin... | 11/17/1987 |
| 4695370 | Process and apparatus for fluid bed catalytic cracking A fluid bed catalytic apparatus and process for cracking a hydrocarbon charge and regenerating the catalyst where hot particles are contacted at the top of the cracking zone (1) with the sprayed liquid charge to be treated and thus produce (a) the vaporiz... | 09/22/1987 |
| 4693808 | Downflow fluidized catalytic cranking reactor process and apparatus with quick catalyst separation means in the bottom thereof This invention discloses an integral hydrocarbon conversion apparatus and process having a downflow hydrocarbon reactor, an upflow riser regenerator and a horizontal cyclone separator to permit the conversion of hydrocarbonaceous materials to hydrocarbona... | 09/15/1987 |
| 4692235 | Selective placement of fluid injection in a riser reactor equipped with a horizontal tee joint connection to substantially reduce back pressure in the riser reactor An apparatus for reducing the pressure drop in a riser reactor equipped with a horizontal tee joint connection which uses a fluid injection means selectively located at a point juxtaposed to the connection of the horizontal and vertical tubes to prohibit ... | 09/08/1987 |
| 4680421 | Composition and method for coke retardant during pyrolytic hydrocarbon processing The present invention is directed to a method of inhibiting the formation of coke during the elevated temperature cracking of hydrocarbons. The method generally comprises adding to the hydrocarbon an effective amount of an ammonium borate, particularly am... | 07/14/1987 |
| 4666584 | Method for passivating cracking catalyst A method and apparatus for passivating the adverse catalytic effects of metal contaminated hydrocarbon feedstocks is described. The method is directed at the use of control means to regulate the residence time of the catalyst in the passivation zone and t... | 05/19/1987 |
| 4664778 | Method for regeneration of resid cracking catalyst An improved process for hydrocarbon conversion-catalyst regeneration processes particularly useful for residual oil, especially high carbon content residual oil conversion. The process generally comprises cooling the compressed air which is introduced int... | 05/12/1987 |
