Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 8158842 | Production of chemicals from pyrolysis oil A process for the recovery of organic chemical feedstocks from biooil is presented. The process comprises separating the water soluble chemicals from biomass and recovering the primarily oxygenate compounds for use as feedstocks. ... | 04/17/2012 |
| 8080701 | Method and apparatus for treating a hydrocarbon stream A method of treating a hydrocarbon stream such as natural gas comprising at least the steps of: (a) providing a hydrocarbon feed stream (10); (b) passing the feed stream (10) through a first separation vessel (12) to provide a first gaseous stre... | 12/20/2011 |
| 7973209 | Fractionation recovery processing of light olefins free of carbon dioxide Processing schemes and arrangements for the catalytic cracking of a heavy hydrocarbon feedstock and obtaining light olefins substantially free of carbon dioxide via amine treatment and employing fractionation processing are provided. ... | 07/05/2011 |
| 7847142 | HF alkylation process with acid regeneration The regeneration of HF alkylation acid in an alkylation unit is improved by withdrawing a vapor stream from the HF regenerator tower and condensing the stream to form a liquid fraction which is accumulated in a side distillation zone; the collected liquid fraction, ... | 12/07/2010 |
| 7714180 | Process and apparatus for recovering olefins A process and apparatus for recovering product from reactor effluent of a reactor for a hydrocarbon feedstream is disclosed. An indigenous C4 stream is used as lean oil in a demethanizer, which facilitates significant cost and operational savings. C4... | 05/11/2010 |
| 7626069 | Method for cleaning tar-bearing waste water and apparatus for performing said method In a method and an apparatus for cleaning tar-bearing waste water (17), a mixture of water and hydrocarbons, e.g. comprising polyaromatic hydrocarbons and phenols, the mixture is separated into a low-boiling-point part and a high-boiling-point part, bringing ... | 12/01/2009 |
| 7554002 | Method for cold supply to the low-temperature separation stage of an olefin plant A method is described for refrigerant supply of a low-temperature separation stage in a plant for producing olefins from hydrocarbon-containing feed (olefin plant). During the separation sequence beginning with a front end deethanizer (3) downstream of raw ga... | 06/30/2009 |
| 7435865 | Method for separating hydrocarbons and use of a zeolite therefor A method for separating a mixture of hydrocarbons into fractions enriched in linear, mono-branched, or multi-branched hydrocarbons is disclosed. In particular, mono-branched alkanes are separated from a mixture of alkanes containing multi-branched, mono-branched and... | 10/14/2008 |
| 7402716 | Hybrid cubic/hexagonal diamondoids Novel compounds having a hybrid cubic/hexagonal diamond crystal structure are disclosed. Each of the four compounds have the stoichiometric formula C26H32 and a molecular weight of 344. The four compounds are contemplated to have a utility in d... | 07/22/2008 |
| 7402720 | Distillation process for removal of methyl acetylene and/or propadiene from an olefin stream The present invention provides a process for removing methyl acetylene and/or propadiene from a propylene stream and/or a butylene stream by two step fractionation. Methyl acetylene and/or propadiene avoids the use of a hydrogenation reactor and makes the methyl ace... | 07/22/2008 |
| 7361799 | Process for producing olefins A process is described for producing olefins from a vapor product stream from an oxygenate to olefin conversion reaction, the vapor product stream comprising C2 to C4 olefins, C5+ hydrocarbons, at least one oxygenate and water. In th... | 04/22/2008 |
| 7332639 | Process for producing olefins A process is described for producing an olefins stream from a first vapor effluent stream from an oxygenate to olefin conversion reaction, said first vapor effluent stream comprising C2 and C3 olefins, C4 hydrocarbons, and C2 | 02/19/2008 |
| 7332073 | Process for removing contaminants from Fischer-Tropsch feed streams A process for removing contaminants from the products of a Fischer-Tropsch synthesis reaction, said contaminants comprising (i) particulates having an effective diameter of greater than 1 micron and (ii) at least 5 ppm of aluminum in aluminum-containing contaminants... | 02/19/2008 |
| 7311813 | Distillation sequence for the purification and recovery of hydrocarbons This invention is an improved distillation sequence for the separation and purification of ethylene from a cracked gas. A hydrocarbon feed enters a C2 distributor column. The top of the C2 distributor column is thermally coupled to an ethylene distributor column, an... | 12/25/2007 |
| 7294749 | Low pressure olefin recovery process A low-pressure olefins recovery process and plant are described. The feed gas 300 is compressed 302, 304 and distilled 310 at a primary distillation pressure. The overhead stream 312 is chilled 318 at a pressure less than 30 kg/cm | 11/13/2007 |
| 7288692 | Process for producing olefins A process is described for producing olefins from a vapor product stream from an oxygenate to olefin conversion reaction, the vapor product stream comprising C2 to C4 olefins, C5+ hydrocarbons, at least one oxygenate and water. In th... | 10/30/2007 |
| 7279012 | Process for producing olefins A process for producing olefins comprises providing a vapor product stream from an oxygenate to olefin reaction, the vapor product stream comprising C2 to C4 olefins, C2 to C6 carbonyl compounds and water. The vapor produc... | 10/09/2007 |
| 7273542 | Process and apparatus for recovering olefins 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 operatio... | 09/25/2007 |
| 7201839 | Desulfurization and novel compositions for same A composition comprising a metal oxide, a silica-containing material, a gallium-containing material, an aluminum-containing material, and a promoter, wherein at least a portion of the promoter is present as a reduced-valence promoter and methods of preparing such co... | 04/10/2007 |
| 7122494 | Combined cracking and selective hydrogen combustion for catalytic cracking A catalyst system and process for combined cracking and selective hydrogen combustion of hydrocarbons are disclosed. The catalyst comprises (1) at least one solid acid component, (2) at least one metal-based component comprised of two or more elements from Groups 4â... | 10/17/2006 |
| 7087144 | Contact ring with embedded flexible contacts A contact assembly for supporting a substrate in an electrochemical plating system, wherein that contact assembly includes a contact ring and a thrust plate assembly. The contact ring includes an annular ring member having an upper surface and a lower surface, an an... | 08/08/2006 |
| 7074323 | Use of low pressure distillate as absorber oil in a FCC recovery section A process for the recovery of gaseous products from the product mixture obtained by contacting a hydrocarbon feed with a catalyst in a fluid catalytic cracking process, wherein the liquid, obtained by separating the top product of main fractionators into gaseous and... | 07/11/2006 |
| 7034194 | Compositions comprising decamantanes and processes for their separation Disclosed are compositions comprising one or more decamantanes. Specifically disclosed are compositions comprising 25 to 100 weight percent of one or more decamantanes. Also disclosed are novel processes for the separation and isolation of decamantane components int... | 04/25/2006 |
| 7030284 | Method and reactor system for converting oxygenate contaminants in an MTO reactor system product effluent to hydrocarbons Disclosed is a method and reactor system for converting oxygenate and/or olefin contaminants in a methanol to olefin reactor system product effluent to hydrocarbons, including paraffin compounds, preferably over a sulphided catalyst of the type Nickel or Cobalt comb... | 04/18/2006 |
| 6987152 | Feed purification at ambient temperature A method for olefin polymerization is provided. A feed stream comprising more than 0.1 ppm by volume of oxygen and 0.3 ppm by volume of water is passed through a first packed bed to selectively remove at least a portion of the oxygen. The feed stream is then passed ... | 01/17/2006 |
| 6960279 | Method for stabilizing vinyl aromatic monomers using selected polymerization inhibitors and polymers prepared therewith Disclosed is the observation that 7-aryl-quinone methides and 4-tert-butylcatechol, when used in combination in a vinyl aromatic monomer to inhibit polymerization,do not inhibit polymerization to the same extend as each would if used separately. Stated another way, ... | 11/01/2005 |
| 6861569 | Processes for the purification of higher diamondoids and compositions comprising such diamondoids Disclosed are processes for the recovery and purification of higher diamondoids from a hydrocarbonaceous feedstock. Specifically disclosed is a multi-step recovery process for obtaining diamondoid compositions enhanced in tetramantane components and other higher dia... | 03/01/2005 |
| 6844477 | Processes for the purification of higher diamondoids and compositions comprising such diamondoids Disclosed are processes for the recovery and purification of higher diamondoids from a hydrocarbonaceous feedstock. Specifically disclosed is a multi-step recovery process for obtaining diamondoid compositions enhanced in tetramantane components and higher diamondoi... | 01/18/2005 |
| 6831202 | Compositions comprising octamantanes and processes for their separation Disclosed are compositions comprising one or more octamantanes. Specifically disclosed are compositions comprising 25 to 100 weight percent of one or more octamantanes. Also disclosed are novel processes for the separation and isolation of octamantane components int... | 12/14/2004 |
| 6828469 | Compositions comprising heptamantane and processes for their separation Disclosed are compositions comprising one or more heptamantanes. Specifically disclosed are compositions comprising 25 to 100 weight percent of one or more heptamantanes. Also disclosed are novel processes for the separation and isolation of heptamantane components ... | 12/07/2004 |
| 6815569 | Compositions comprising tetramantanes and processes for their separation Disclosed are compositions comprising one or more tetramantanes. Specifically disclosed are compositions comprising 10 to 100 weight percent of one or more tetramantanes. Also disclosed are novel processes for the separation and isolation of tetramantane components ... | 11/09/2004 |
| 6812371 | Compositions comprising nonamantanes and processes for their separation Disclosed are compositions comprising one or more nonamantanes. Specifically disclosed are compositions comprising 25 to 100 weight percent of one or more nonamantanes. Also disclosed are novel processes for the separation and isolation of nonamantane components int... | 11/02/2004 |
| 6812370 | Compositions comprising hexamantanes and processes for their separation Disclosed are compositions comprising one or more hexamantanes. Specifically disclosed are compositions comprising 25 to 100 weight percent of one or more hexamantanes. Also disclosed are novel processes for the separation and isolation of hexamantane components int... | 11/02/2004 |
| 6755965 | Ethane extraction process for a hydrocarbon gas stream A process for ethane extraction from a gas stream based on turboexpansion and fractionation with no mechanical refrigeration is provided. The feed gas is sweetened and dehydrated by a conventional amine process and by a molecular sieve unit, to remove carbon dioxide... | 06/29/2004 |
| 6592749 | Hydrogen/hydrocarbon separation process, including PSA and membranes An improved process for separating hydrogen from hydrocarbons. The process includes a pressure swing adsorption step, a compression/cooling step and a membrane separation step. The membrane step uses a rubbery polymeric membrane selective for all C1 | 07/15/2003 |
| 6579419 | Method for purifying norbornene by distillation For the purification of the norbornene obtained by the reaction of dicyclopentadiene or cyclopentadiene and ethylene, the crude reaction mixture containing light impurities having boiling temperatures lower than that of norbornene; medium-heavy impurities... | 06/17/2003 |
| 6576805 | Cat cracker gas plant process for increased olefins recovery The invention relates to a new process for more efficient separation and recovery of light olefins such as ethylene and propylene from a fluid catalytic cracking unit. The new process invention for recovering olefins from a mixture of cracked hydrocarbons... | 06/10/2003 |
| 6559348 | Process for treating gas flows of polyolefin manufacturing The invention relates to a process for the treatment of a gas stream obtained from the production of polyolefins and containing unreacted compounds. According to the process, uncondensed compounds are removed from the gas stream and, when so desired, thes... | 05/06/2003 |
| 6552242 | Fractionation in light paraffin isomerization process Fractional distillation performed to recover butane used as a desorbent component for adsorptive separation is integrated with the other fractionation of the raffinate stream of a C5 -C6 paraffin adsorptive separation zone. A single ... | 04/22/2003 |
| 6514387 | Rectifying column for extractive distillation of close-boiling or azeotropic boiling mixtures The invention relates to a rectifying column for extractive distillation, comprising a column main section (204) and a raffinate section (205) above said main section, an evaporator (208) situated on the lower end of the column, an inlet (214) disposed be... | 02/04/2003 |
