Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 4886929 | Separation of para-xylene The separation of the para-isomer of a dialkyl benzene from a mixture of the isomers thereof, especially p-xylene, by contacting the mixture at adsorption conditions with a type X or type Y zeolite adsorbent, ion exchanged with barium and potassium, and r... | 12/12/1989 |
| 4861459 | Low pressure mixing process for atomizing fluids The liquid feed injector as hereindescribed uses sequential stages of increased severity mixing to fully atomize a liquid portion of a combined liquid and gaseous stream. Sequential mixing consists of a first mild mixing that takes place in a mild mixing ... | 08/29/1989 |
| 4859313 | Method for reducing the temperature in a regeneration zone of a fluid catalytic cracking process A method for operating a fluid catalytic cracking unit comprising a regeneration zone and a reaction zone with a relatively reduced temperature in the regeneration zone while processing a hydrocarbon feedstock having a 50 volume percent distillation tempe... | 08/22/1989 |
| 4851574 | Separation of citric acid from fermentation broth with a strongly basic anionic exchange resin adsorbent Citric acid is separated from a fermentation broth by using an adsorbent comprising a strongly water-insoluble, macroreticular or gel, basis anionic exchange resin possessing quaternary amine functional groups, said a anionic exchange resin having a cross... | 07/25/1989 |
| 4832921 | Apparatus for regeneration of hydrocarbon conversion catalyst A vessel for effecting multiple treatment steps needed to regenerate spent hydrocarbon conversion catalyst. Regeneration is accomplished in a moving bed of catalyst, where catalyst is passed through several treatment zones in the regeneration vessel. Cata... | 05/23/1989 |
| 4827077 | Separation of indene from alkyl aromatics The chromatographic adsorption separation of indene from petrochemical or synthetic feed mixtures with an Na- or K-exchanged X- or Y-zeolite and toluene, benzene, fluorobenzene or other halogen- or alkyl-substituted monocyclic aromatic desorbents. Selecti... | 05/02/1989 |
| 4827072 | Dehydrogenation catalyst composition and hydrocarbon dehydrogenation process A novel catalytic composite comprising a platinum group metal component; a modifier metal component selected from the group consisting of a tin component, germanium component, rhenium component and mixtures thereof; an optional alkali or alkaline earth me... | 05/02/1989 |
| 4827066 | Dehydrogenation of dehydrogenatable hydrocarbons A process for the catalytic dehydrogenation of a dehydrogenatable C2 -plus feed hydrocarbon which comprises the steps of: (a) passing a feed stream comprising the C2 -plus feed hydrocarbon into an isothermal dehydrogenation zone and ... | 05/02/1989 |
| 4824818 | Catalytic composite and process for mercaptan sweetening This invention relates to a catalytic composite effective in oxidizing mercaptans contained in a sour petroleum distillate to disulfides. The catalytic composite comprises a metal chelate, an onium compound and optionally an alkali metal hydroxide. The on... | 04/25/1989 |
| 4822762 | Catalyst for the conversion of hydrocarbons A nonacidic hydrocarbon conversion catalyst is disclosed which is prepared by incorporating potassium hydroxide into a composite of nonacidic L-zeolite and amorphous silica. A preparation procedure is also disclosed as well as a process for dehydrocyclizi... | 04/18/1989 |
| 4818368 | Process for treating a temperature-sensitive hydrocarbanaceous stream containing a non-distillable component to produce a hydrogenated distillable hydrocarbonaceous product A process for treating a temperature-sensitive hydrocarbonaceous stream containing a non-distillable component to produce a hydrogenated distillable hydrocarbonaceous product while minimizing thermal degradation of the hydrocarbonaceous stream which proce... | 04/04/1989 |
| 4816607 | Integrated etherification process with recycle post treatment A multistep hydrocarbon conversion process for the production of ethers including methyl tertiary butyl ether (MTBE) from light paraffins and alcohols is disclosed. A mixture of C4 isoparaffins, normal paraffins, an etherification recycle and b... | 03/28/1989 |
| 4814064 | Combination process for the conversion of a residual hydrocarbonaceous charge stock to produce middle distillate product A process for the conversion of an aromatic-rich, residual hydrocarbonaceous charge stock which possesses an aromatic hydrocarbon concentration greater than about 20 volume percent to selectively produce large quantities of high quality middle distillate ... | 03/21/1989 |
| 4812597 | Dehydrogenation of dehydrogenatable hydrocarbons Dehydrogenatable hydrocarbons may be subjected to a dehydrogenation reaction in which the hydrocarbons such as ethylbenzene are treated with a dehydrogenation catalyst comprising a modified iron catalyst in the presence of steam. The reaction mixture cont... | 03/14/1989 |
| 4810683 | Regeneration of a platinum-containing zeolite A method is described for the regeneration of a hydrocarbon conversion catalyst that has become deactivated by carbonaceous material deposition where the catalyst comprises a nonacid zeolite and a Group VIII metal component. The method comprises the steps... | 03/07/1989 |
| 4806700 | Production of benzene from light hydrocarbons A process is disclosed for the conversion of a light aliphatic hydrocarbon, such as propane, into benzene and optionally also naphthalene. The feed hydrocarbon is converted to aromatic hydrocarbons in a dehydrocyclodimerization zone. The aromatics, and ot... | 02/21/1989 |
| 4806624 | Dehydrogenation of dehydrogenatable hydrocarbons A process for the catalytic dehydrogenation of a dehydrogenatable C2 -plus feed hydrocarbon which comprises the steps of: (a) passing a feed stream comprising the C2 -plus feed hydrocarbon into a dehydrogenation zone and through at l... | 02/21/1989 |
| 4806616 | N-N'-dialkylphenylenediamines as curing agents in polyurethane and polyurea manufacture by reaction injection molding N,N'-dialkyl- and diaylphenylenediamines are effective curing agents in combination with other polyamines and polyols in reaction injection molding for a diverse class of polyisocyanates. The diamines provide a broad spectrum of cure times, as well as giv... | 02/21/1989 |
| 4806233 | Method of separating a hot hydrocarbonaceous stream A method of separating a hot hydrocarbonaceous stream having a temperature above the dew point of water and comprising hydrogen, vaporous hydrocarbonaceous compounds and an acidic inorganic compound which method comprises: (a) contacting the hot hydrocarb... | 02/21/1989 |
| 4806695 | Process for etherification of a dehydrogenation zone effluent A combined process for the dehydrogenation of C3 -C5 paraffins in a first zone and the conversion of olefins in a second zone improves efficiency by directly charging all but the lightest components of the dehydrogenation zone efflue... | 02/21/1989 |
| 4804803 | Isomerization with once-through hydrogen A process for the isomerization of C4 -C6 paraffins that uses a highly active catalyst to isomerize the feed in the presence of very little hydrogen. The process is characterized by good stability and high conversion with effluent hy... | 02/14/1989 |
| 4801674 | Secondary aromatic diamines as curing agents in polyurethane and polyurea manufacture by reaction injection molding N,N'-disubstituted diamines are effective curing agents in combination with other polyamines and polyols in reaction injection molding for a diverse class of polyisocyanates. The diamines provide a broad spectrum of cure times, as well as giving elastomer... | 01/31/1989 |
| 4798665 | Combination process for the conversion of a distillate hydrocarbon to maximize middle distillate production A process for the conversion of an aromatic-rich, distillable gas oil charge stock which is essentially free from asphaltenic hydrocarbons and possesses an aromatic hydrocarbon concentration greater than about 20 volume percent to selectively produce larg... | 01/17/1989 |
| 4797233 | Process for separating mono-, di- and triglycerides The separation of monoglycerides from diglycerides and triglycerides is performed by an adsorptive chromatographic process in liquid phase using sodium, magnesium, lithium or potassium-exchanged X zeolites or potassium or sodium-exchanged Y zeolite, or po... | 01/10/1989 |
| 4797133 | Process for recovery of butene-1 from mixed C4 hydrocarbons A process is disclosed for the recovery of butene-1 from a mixed C4 feed stream which also contains isobutylene, butene-2, isobutane and normal butane. The C4 feed stream is passed through an etherification reaction zone wherein isob... | 01/10/1989 |
| 4795728 | Motor fuel alkylation process utilizing a surfactant containing catalyst to reduce hydrofluoric acid requirements A novel hydrofluoric acid-catalyzed motor fuel alkylation process and catalyst is disclosed which incorporates from 0.5 to 5 vol. % of a cationic or anionic surfactant component in an HF containing acid alkylation catalyst to enable the process to be oper... | 01/03/1989 |
| 4795550 | Removal of trace olefins from aromatic hydrocarbons This invention presents a novel treating process for the removal of trace quantities of olefinic impurities from a hydrocarbon process stream. Specifically, this process operates at liquid phase conditions treating hydrocarbon streams comprising substanti... | 01/03/1989 |
| 4795545 | Process for pretreatment of light hydrocarbons to remove sulfur, water, and oxygen-containing compounds A pretreatment process for removal of contaminants from a light hydrocarbon feedstock is presented. The feedstock is passed to a first adsorption zone containing a molecular sieve and thereafter passed to a second adsorption zone containing activated alum... | 01/03/1989 |
| 4795843 | Conversion of methane into larger organic hydrocarbons Organic hydrocarbons which comprise useful compounds may be obtained in a two-step process utilizing methane as a feedstock. The desired compounds are prepared by treating said methane with a halogenating agent such as chlorine, followed by contacting the... | 01/03/1989 |
| 4795852 | Process for the oligomerization of olefins and a catalyst thereof An olefinic feedstock containing contaminants such as oxygenates may be oligomerized to a desired oligomer which contains a particular configuration. The process may be effected by utilizing a catalyst which comprises a porous support containing a catalyt... | 01/03/1989 |
| 4795851 | Process for the oligomerization of olefins and a catalyst thereof Olefinic feedstocks which contain catalyst contaminants or poisons such as sulfur-containing compounds may be oligomerized to a desired oligomer and configuration of the oligomer by utilizing a catalyst which is stable and will not deactivate due to the p... | 01/03/1989 |
| 4795846 | Process for the dehydrocyclization of aliphatic hydrocarbons An improved dehydrocyclization process for the selective conversion of light hydrocarbons to aromatics is presented. The activity of a catalyst containing nonacidic L-zeolite is greatly enhanced by the addition of water, water precursors, or mixtures ther... | 01/03/1989 |
| 4795845 | Regeneration of dehydrocyclodimerization catalyst A process for catalytic dehydrocyclodimerization and regeneration of the catalyst. C2 to C5 aliphatic hydrocarbons are reacted to produce aromatics, using a catalyst of a composition especially adapted to minimize deposition of coke ... | 01/03/1989 |
| 4795844 | Process for conversion of light olefins to LPG and aromatics A process is disclosed for the catalytic conversion of an olefin-containing C3 and/or C4 feed (1) into aromatic hydrocarbons (22) and C3 and/or C4 paraffins (25,26). The process may result in a net consumption o... | 01/03/1989 |
| 4794202 | Process for separating halogen substituted toluene isomers A process for separating the para and ortho isomers of a halogen substituted toluene from a feed mixture of the same. Separation of the isomers is effected by selective adsorption and desorption and is susceptible to various flow schemes for performing co... | 12/27/1988 |
| 4792390 | Combination process for the conversion of a distillate hydrocarbon to produce middle distillate product A process for the conversion of an aromatic-rich, distillable gas oil charge stock which is essentially free from asphaltenic hydrocarbons and possesses an aromatic hydrocarbon concentration greater than about 20 volume percent to selectively produce larg... | 12/20/1988 |
| 4791087 | Trimetallic reforming catalyst A novel trimetallic catalytic composite, a method of manufacture and process use thereof is dislcosed. The composite comprises a refractory support having a nominal diameter of at least 650 microns and having deposited thereon a uniformly dispersed platin... | 12/13/1988 |
| 4788371 | Catalytic oxidative steam dehydrogenation process A novel process is disclosed for the steam dehydrogenation of dehydrogenatable hydrocarbons in the vapor phase in conjunction with oxidative reheating of the intermediate products. The process utilizes a single catalyst to perform both the selective oxida... | 11/29/1988 |
| 4786625 | Dehydrogenation catalyst compositon A novel catalytic composite comprising a platinum group metal component; a modifier metal component selected from the group consisting of a tin component, germanium component, rhenium component and mixtures thereof; an optional alkali or alkaline earth me... | 11/22/1988 |
| 4784807 | Process for separating triglylcerides by degree of unsaturation The separation of polyunsaturated triglycerides from monounsaturated triglycerides is performed by an adsortive chromatographic process in liquid phase using hydrogen-, copper-, or potassium-exchanged omega zeollites or carbon as the adsorbent. A ketone, ... | 11/15/1988 |
