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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 7737318 | Process for fine purification of 1-butenic streams The invention relates to a process for preparing 1-butenic fractions having less than 2000 ppm of isobutene in relation to 1-butene from technical mixtures of C4 hydrocarbons I which contain at least 1-butene and 2000 ppmw to 8% by mass of isobutene based... | 06/15/2010 |
| 7368617 | Selective hydrogenation of acetylenes and dienes in a hydrocarbon stream Acetylenes and dienes in a stream containing hydrogen, methane, C2-C6 olefins and paraffins, C2-C6 acetylenes and dienes, benzene, toluene, xylenes, and other C6+ components are hydrogenated in a downflow boilin... | 05/06/2008 |
| 7351327 | Process for the selective desulfurization of a mid range gasoline cut A process for concurrently fractionating and treating a full range naphtha stream. The full boiling range naphtha stream is first subjected to simultaneous thioetherification and splitting into a light boiling range naphtha, an intermediate boiling range naphtha and... | 04/01/2008 |
| 7311758 | Method of purifying a natural gas by mercaptan adsorption The raw natural gas is deacidized and dehydrated in units DA and DH. The treated gas is then purified by adsorption of the mercaptans in first enclosure A1. Part of the purified gas is heated in E1, then fed into second enclosure A2 so as to dis... | 12/25/2007 |
| 7288686 | Hydrogenation catalyst and hydrogenation process A supported hydrogenation catalyst comprising (1)Pd or a Group 8 metal comprising Pd and one other Group 8 metal, preferably a Group 8 metal selected from Pt, Ir, Ru, Co or Ni, and (2) at least two metals selected from Ag, Zn or Bi, preferably Ag and at least one of... | 10/30/2007 |
| 7211128 | Method of purifying a natural gas by mercaptan adsorption The raw natural gas is pretreated in treating unit 30. The treated gas is then purified by adsorption of the mercaptans in first enclosure 31. The various cuts that make up the purified gas are separated in fractionating unit 34. Part of the met... | 05/01/2007 |
| 7208646 | Selective hydrogenation of butadiene A process for the selective hydrogenation of dienes in mixed streams of olefin containing hydrocarbons, such as butadiene in a mixed C4 stream with minimum loss of monoolefins is disclosed wherein the reactor is operated at conditions which induce pulse f... | 04/24/2007 |
| 7125484 | Downflow process for hydrotreating naphtha A process for the treatment of light naphtha hydrocarbon streams is disclosed wherein the mercaptans contained therein are reacted with diolefins simultaneous with fractionation into a light stream and a heavy stream. The heavy stream is then simultaneously treated ... | 10/24/2006 |
| 7060866 | High pressure separation of dimethyl ether from an olefin stream Disclosed is a method of removing dimethyl ether from an ethylene and/or propylene containing stream. Dimethyl ether is removed at a high pressure, preferably in a distillation column. The high pressure separation has the benefit of providing a relatively low bottom... | 06/13/2006 |
| 7060865 | Recovery of C4 olefins from a product stream comprising C4 olefins, dimethyl ether and C5+ hydrocarbons Disclosed is a process for removing DME from a stream containing C4 olefins. The process includes providing a first stream comprising C4 olefins, C5+ hydrocarbons, DME, and methanol. The first stream is separated into a second stream comprising the C4 olefins and th... | 06/13/2006 |
| 7038101 | Method for product separation and purification in iso-butylene dimerization process A method for operating a dimerization reactor that receives a hydrocarbon feed and produces an output stream comprising a light hydrocarbon component, a dimer and an alcohol component comprises: (a) separating the first output stream into a top stream containing the... | 05/02/2006 |
| 6676830 | Process for the desulfurization of a light FCC naphtha A process for the desulfurization of a light boiling range (C5 -350° F.) fluid catalytically cracked naphtha, which may be first subjected to a thioetherification to react the diolefins with mercaptans contained in it to form sulfides, is fed ... | 01/13/2004 |
| 6483003 | Removal of impurities from a hydrocarbon component or fraction A process for removing impurities from a hydrocarbon component or fraction comprises mixing, in a liquid-liquid extraction step, an impurity-containing liquid hydrocarbon component or fraction, as an impure liquid hydrocarbon feedstock, with an acetonitri... | 11/19/2002 |
| 6459009 | Two-stage quench tower for use with oxygenate conversion process The invention is a process for recovering heat and removing impurities from a reactor effluent stream withdrawn from a fluidized exothermic reaction zone for conversion of oxygenates into light olefins from an oxygenate feedstream. The process comprises a... | 10/01/2002 |
| 6197163 | Process for removing impurities from petroleum products The impurity content, e.g. propionitrile, in a fraction containing C5 or C6 tertiary olefins obtained by cracking hydrocarbons is reduced by distilling with an alkanol and removing the impurity as a higher boiling point fraction.... | 03/06/2001 |
| 6030588 | Zone refiner apparatus and method for purifying organic substances A high speed zone refiner (10) includes a plurality of elongated heating elements (23) mounted side by side to provide a plurality of spaced elongated heating zones and a sample tray (44) for holding an impure organic specimen. The zone refiner also inclu... | 02/29/2000 |
| 5965784 | Process and apparatus for extracting aromatic compounds contained in a hydrocarbon feedstock An extraction process and an apparatus for separating aromatic compounds contained in a liquid hydrocarbon feedstock where the feedstock feed into the lower part of an extraction column is brought into intimate countercurrent contact therein with a third ... | 10/12/1999 |
| 5942654 | Process for the removal of corrosive compounds from a fluid stream A process for the removal of corrosive compounds from a fluid stream, comprising the steps of: in an extraction column with an outer steel tube and an inner tube of corrosion resistant material having an open inlet end and an open outlet end and being arr... | 08/24/1999 |
| 5863420 | Unsaturated hydrocarbon separation and recovery process A process disclosed for the separation, purification and recovery of an unsaturated hydrocarbon from its mixture with at least one other material using a facilitated transport liquid membrane system.... | 01/26/1999 |
| 5849982 | Recovery of styrene from pyrolysis gasoline by extractive distillation An extractive distillation process for separating at least one substituted unsaturated aromatic from a pyrolysis gasoline mixture, containing said aromatic and at least one close-boiling aromatic or non-aromatic hydrocarbon, employing a two part extractiv... | 12/15/1998 |
| 5659109 | Method for removing mercaptans from LNG A process for liquefying natural gas containing mercaptans. Mercaptans are concentrated into a distillate stream by distilling the feed gas stream without specific pretreatment for mercaptans removal. Thus, the mercaptans removal equipment is much smaller... | 08/19/1997 |
| 5549814 | FCC stripper with spoke arrangement for bi-directional catalyst stripping An FCC stripper uses a grid arrangement that provides increased contacting of stripping fluid and catalyst through multiple levels of stripping grids while using a configuration that permits access through the stripper vessel for maintenance and inspectio... | 08/27/1996 |
| 5510568 | Process for the removal of mercaptans and hydrogen sulfide from hydrocarbon streams A process for treating a light cracked naphtha to be used as an etherification or alkylation feedstock in which the mercaptans and diolefins are removed simultaneously in a distillation column reactor using a Pd catalyst. The mercaptans are reacted with t... | 04/23/1996 |
| 5461184 | Method for diamondoid extraction using a solvent system A method for extracting diamondoid compounds from a hydrocarbonaceous fluid such as natural gas, that contains diamondoid compounds is disclosed. The hydrocarbonaceous fluid is mixed with a first solvent in which diamondoids are at least partially soluble... | 10/24/1995 |
| 5336840 | Process for the separation of aromatic hydrocarbons with energy redistribution A continuous solvent extraction process for the separation of aromatic hydrocarbons from a feedstock comprising aromatic and non-aromatic hydrocarbons provides more efficient heat utilization by using a lean solvent stream to heat the rich solvent stream ... | 08/09/1994 |
| 5336841 | Oxygenate removal in MTBE process A process is provided to remove oxygenates from a C4 raffinate stream from an MTBE plant. A back-cracking catalyst is placed into the bottom of an oxygenate removal column which will convert any MTBE or TBA contained therein back to their origi... | 08/09/1994 |
| 5191152 | Process for the separation of aromatic hydrocarbons with energy redistribution A continuous solvent extraction process for the separation of aromatic hydrocarbons from a feedstock comprising aromatic and non-aromatic hydrocarbons provides more efficient heat utilization by using a lean solvent stream to heat the rich solvent stream ... | 03/02/1993 |
| 5131993 | Low power density plasma excitation microwave energy induced chemical reactions Disclosed is a method for cracking a hydrocarbon material. The method includes introducing a stream including a hydrocarbon fluid and a carrier fluid into a reaction zone. A microwave discharge plasma is continuously maintained within the reaction zone, a... | 07/21/1992 |
| 5107055 | Method for simultaneous recovery of pure benzene and pure toluene A simultaneous recovery of pure benzene and pure toluene is performed by extractive distillation with N-formylmorpholine and/or other N-substituted morpholines whose substituents contain not more than seven C-atoms as a solvent. From the entry product by ... | 04/21/1992 |
| 5015349 | Low power density microwave discharge plasma excitation energy induced chemical reactions Disclosed is a method for cracking a hydrocarbon material. The method includes introducing a stream including a hydrocarbon fluid into a reaction zone. A microwave discharge plasma is continuously maintained within the reaction zone, and in the presence o... | 05/14/1991 |
| 4962275 | Method and apparatus for supercritical fluid extraction solution separation A method and apparatus for the separation of a desired product from a supritical fluid extraction solution employ a restrictor nozzle, a coarse-pore sintered-glass enclosure member and a collecting means for collecting an oil suspension of the desired pr... | 10/09/1990 |
| 4822948 | Self-cooled process for extracting heavy hydrocarbon fractions This new process provides for the treatment of a gas containing a light fraction and a heavy fraction, so as to extract at least a portion of the heavy fraction. The process is characterized in that the gas to be treated (1) is contacted with a solvent (8... | 04/18/1989 |
| 4788379 | Production of acetylene The process relates to the recovering of essentially pure acetylene from the gaseous out-put stream from a coal to acetylene conversion process. A plasma arc generator or other high energy type reactor can be used for the conversion to coal. The gaseous o... | 11/29/1988 |
| 4597768 | Method for treatment in counter current of suspended particles with a liquid A method for treating in counter current of suspended particles with a liquid, whereby the particles and the liquid are transferred in opposite directions through a contact zone which, at some places, spaced in axial direction, is stirred in planes perpen... | 07/01/1986 |
| 4423248 | Process for zone refining with a helical solution zone A process for refining an impure material using a helical solution zone and employing a common solvent for both material to be purified and impurity.... | 12/27/1983 |
| 4367363 | Production of acetylene The process relates to the recovering of essentially pure acetylene from the gaseous out-put stream from a coal to acetylene conversion process. A plasma arc generator or other high energy type reactor can be used for the conversion to coal. The gaseous o... | 01/04/1983 |
| 4266086 | Process for removing -acetylenes from diolefins Conjugated diolefins contaminated with relatively high levels of acetylenic impurities in a hydrocarbon feedstream are purified by a cyclic, liquid phase, predominantly catalytic cracking process which selectively removes alpha-acetylenes in a single pass... | 05/05/1981 |
| 4260847 | Process and apparatus for the continuous removal of residual hydrocarbons from polyolefins The invention relates to an improved process, wherein polyolefins are freed from saturated liquid residual hydrocarbons with the aid of water and steam. The improvement comprises A. introducing the hydrocarbon-containing polyolefin into an aqueous emulsif... | 04/07/1981 |
| 4168209 | Process for purifying benzene and toluene by extractive azeotropic distillation Process for separating benzene and/or toluene from mixtures thereof with saturated hydrocarbons, by extractive distillation using an aliphatic N-alkylamide as extraction solvent, comprising introducing in the distillation column, above the level of introd... | 09/18/1979 |
| 4125568 | Removal of carbonyl impurities Impurities that are carbonyl-containing organic compounds (e.g., acetaldehyde) are removed from organic hydrocarbons produced in conventional production facilities. The process comprises contacting the hydrocarbon product (e.g., butadiene) with an aqueous... | 11/14/1978 |
