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| Number | Title | Issue Date |
| 8132678 | Polybenzoxazole polymer-based mixed matrix membranes The present invention discloses new types of polybenzoxazole-based mixed matrix membranes and methods for making and using these membranes. The polybenzoxazole-based mixed matrix membranes are prepared by fabricating a polyimide-based mixed matrix membrane by disper... | 03/13/2012 |
| 8132677 | Polymer membranes prepared from aromatic polyimide membranes by thermal treating and UV crosslinking The present invention discloses a new type of high performance polymer membranes prepared from aromatic polyimide membranes by thermal treating and crosslinking and methods for making and using these membranes. The polymer membranes were prepared from aromatic polyi... | 03/13/2012 |
| 8129576 | Protection of solid acid catalysts from damage by volatile species The invention provides a method to avoid catalyst damage and achieve longer catalyst life by selecting appropriate materials for reactor spacers, liners, catalyst binders, and supports, in particular, by not using crystalline silica-containing and high phosphorus-co... | 03/06/2012 |
| 8127938 | Apparatus and process for treating a hydrocarbon stream One exemplary embodiment can be an apparatus for treating a hydrocarbon stream having one or more compounds with a boiling point of about 140-about 450° C. The apparatus can include an extraction zone and a regeneration zone. The extraction zone can include at leas... | 03/06/2012 |
| 8127937 | High performance cross-linked polybenzoxazole and polybenzothiazole polymer membranes In the present invention high performance cross-linked polybenzoxazole and polybenzothiazole polymer membranes and methods for making and using these membranes have been developed. The cross-linked polybenzoxazole and polybenzothiazole polymer membranes are prepared... | 03/06/2012 |
| 8127936 | High performance cross-linked polybenzoxazole and polybenzothiazole polymer membranes In the present invention high performance cross-linked polybenzoxazole and polybenzothiazole polymer membranes and methods for making and using these membranes have been developed. The cross-linked polybenzoxazole and polybenzothiazole polymer membranes are prepared... | 03/06/2012 |
| 8123842 | Direct contact cooling in an acid gas removal process Systems and processes disclosed herein relate to the utilization of direct contact condensing to provide heat to a solvent regeneration loop in an acid gas removal process. A first direct contact condenser can be included in the upper section of a concentrator that ... | 02/28/2012 |
| 8083834 | High permeability membrane operated at elevated temperature for upgrading natural gas The present invention discloses a new process of treating natural gas using high gas permeability polybenzoxazole polymer membranes operated at high temperatures that can provide sufficient dew point margin for the product gas. The high gas permeability polybenzoxaz... | 12/27/2011 |
| 8083833 | Flexible template-directed microporous partially pyrolyzed polymeric membranes This invention describes a new concept of flexible template-directed microporous partially pyrolyzed polymeric membranes which have greatly improved performance in separation of gas pairs compared to their precursor polymeric membranes. Organic hosts, such as crown ... | 12/27/2011 |
| 8074972 | Device for gas-liquid contacting One exemplary embodiment can be a device for a gas-liquid contacting apparatus. The gas-liquid contacting apparatus can include a member. The member can include: a non-breakable portion, and a breakable portion ada... | 12/13/2011 |
| 8067646 | Combined temperature controlled adsorption and heat pump process for fuel ethanol dehydration Systems and processes for dehydration of a process stream in the production of motor fuel grade ethanol (MFGE) can include temperature controlled adsorption of water in the process stream, and heat pumping of the associated heat of adsorption. The process can includ... | 11/29/2011 |
| 8052777 | Vessel, system, and process for minimizing unequal flow distribution One exemplary embodiment can be a pressure swing adsorber vessel. The pressure swing adsorber vessel can include one or more walls. Generally, the one or more walls contain an adsorbent bed having a first side and a second side and at least one spacer forming a cusp... | 11/08/2011 |
| 8052126 | Liquid distribution in co-current contacting apparatuses Fluid distribution systems, and particularly those for distributing liquids into apparatuses containing modules used to carry out vapor-liquid contacting, are described. Representative liquid distribution systems comprise an extended trough having a plurality of out... | 11/08/2011 |
| 8048198 | High performance mixed matrix membranes incorporating at least two kinds of molecular sieves The present invention discloses a new type of high performance mixed matrix membranes (MMMs) and methods for making and using the same. The MMMs comprise a continuous polymer matrix and at least two types of molecular sieves dispersed therein. The continuous polymer... | 11/01/2011 |
| 8047509 | Vapor-liquid contacting apparatuses with vortex contacting stages Vapor-liquid contacting apparatuses, for example reactors and distillation columns (as well as reactive distillation apparatuses), comprising a vessel with one or more vortex contacting stages, are described. The one or more stages provide high interfacial area for ... | 11/01/2011 |
| 8030399 | Crosslinked organic-inorganic hybrid membranes and their use in gas separation The present invention is for crosslinked membranes and in particular for crosslinked poly(ethylene oxide)-cellulose acetate-silsesquioxane (PEO-CA-Si) organic-inorganic hybrid membranes and their use in gas separation. These crosslinked PEO-CA-Si membranes were prep... | 10/04/2011 |
| 8020838 | Contacting stages for co-current contacting apparatuses Improved contacting stages for carrying out vapor-liquid contacting are described. Particular aspects are directed to co-current vapor-liquid contacting devices with non-parallel contacting stages that provide an efficient usage of column space for fluid flow and co... | 09/20/2011 |
| 8017545 | Dynamic composition for the removal of sulfur from a gaseous stream The present invention relates to a method of making a chemical compound comprising nickel, aluminum, oxygen and sulfur having a general formula Ni2xAl2O2x+3−zSz, wherein 0.5≦x≦3 and 0≦z≦2x. The material is effect... | 09/13/2011 |
| 8007760 | Process for producing enhanced alumina The present invention provides an essentially dry method for preparation of enhanced alumina powders. The first step involves rapid calcination of an aluminum compound to produce alumina powder. The alumina powder is mixed with solid ammonium carbonate and a small a... | 08/30/2011 |
| 7998893 | Treatment of air to a catalyst regenerator to maintain catalyst activity The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock comprising an oxygenate in the presence of a molecular sieve catalys... | 08/16/2011 |
| 7998429 | Catalyst containment design for radial flow reactors An apparatus is presented for contacting a bed of particulate material with a cross flowing fluid, which maintains the bed of particulate material within a retention volume. The apparatus includes partitions for retaining particles, with openings disposed within the... | 08/16/2011 |
| 7998246 | Gas separations using high performance mixed matrix membranes The present invention discloses a novel method of making high performance mixed matrix membranes (MMMs) using stabilized concentrated suspensions of solvents, uniformly dispersed polymer stabilized molecular sieves, and at least two different types of polymers as th... | 08/16/2011 |
| 7985381 | Utilization of baffles in chlorination zone for continuous catalyst regeneration Catalyst regeneration vessels including a chlorination zone that includes an outer mixing chamber, an inner mixing chamber, and a catalyst bed. The outer mixing chamber can include a lower portion and an upper portion, the lower portion of the outer mixing chamber i... | 07/26/2011 |
| 7981836 | Hydrothermally stable alumina The hydrothermal stability of transition aluminas used as adsorbents and catalyst carriers is improved through their treatment with a soluble silicon inorganic compound such as sodium silicate wherein the silicon compound is mixed with the alumina powder at the prod... | 07/19/2011 |
| 7981201 | De-entrainment device De-entrainment devices for effectively removing entrained liquid from a vapor stream are disclosed. These de-entrainment devices are effective in distillation columns and other apparatuses comprising vapor-liquid contacting devices. Particular representative applica... | 07/19/2011 |
| 7977273 | Enhancement of molecular sieve performance A catalyst for converting methanol to light olefins and the process for making and using the catalyst are disclosed and claimed. SAPO-34 is a specific catalyst that benefits from its preparation in accordance with this invention. A seed material is used in making th... | 07/12/2011 |
| 7973208 | Enhancement of molecular sieve performance A catalyst for converting methanol to light olefins and the process for making and using the catalyst are disclosed and claimed. SAPO-34 is a specific catalyst that benefits from its preparation in accordance with this invention. A seed material is used in making th... | 07/05/2011 |
| 7972989 | Enhancement of molecular sieve performance A catalyst for converting methanol to light olefins and the process for making and using the catalyst are disclosed and claimed. SAPO-34 is a specific catalyst that benefits from its preparation in accordance with this invention. A seed material is used in making th... | 07/05/2011 |
| 7967896 | Use of hydraulic turbocharger for recovering energy from high pressure solvents in gasification and natural gas applications The invention provides a process and system for regenerating a solvent used to remove carbon dioxide from feed gases, such as natural gas and synthesis gas. The invention employs one or more hydraulic turbochargers to transfer energy from a higher energy solvent str... | 06/28/2011 |
| 7947250 | Process for conversion of aluminum oxide hydroxide The present invention is a process for the conversion of aluminum oxide hydroxide (AlOOH) to aluminum oxide. About 30 to 70 wt-% of AlOOH, about 30 to 70 wt-% ammonium hydrogencarbonate NH4HCO3 and 0 to 20 wt-% water are combined to produce a m... | 05/24/2011 |
| 7943543 | Ionic liquid-solid-polymer mixed matrix membranes for gas separations New ionic liquid-solid-polymer mixed matrix membranes were proposed for gas separations such as CO2 removal from natural gas or N2. For the new mixed matrix membranes, the solids such as carbon molecular sieves, microporous molecular sieves, MC... | 05/17/2011 |
| 7935650 | Neutralization of quench stream in a process for handling catalyst from an oxygenate-to-olefin reaction The present invention provides a process for separating and disposing of catalyst in an oxygenate to olefins reaction system. Oxygenates are converted to olefins in a reactor in the presence of a catalyst having carbonaceous deposits, then effluent stream comprising... | 05/03/2011 |
| 7935324 | Integrated warm gas desulfurization and gas shift for cleanup of gaseous streams The present invention involves a catalytic process for purifying a gas stream comprising purifying the gas stream at a temperature from about 250° to 550° C. by removing sulfur compounds and including a gas shift reaction to convert carbon monoxide to carbon dioxi... | 05/03/2011 |
| 7935178 | Use of a biphasic turbine in a process for recovering energy in gasification and natural gas applications The invention provides a process and system for regenerating a solvent used to remove carbon dioxide from feed gases, such as natural gas and synthesis gas. The process and system employ a biphasic turbine to recover energy following pressure let down. ... | 05/03/2011 |
| 7906448 | Moving bed catalyst regeneration apparatus with integral CO oxidation zone and method of use to accelerate coke burning A combination of moving bed regeneration technology and CO oxidation technology is used in a novel moving bed regeneration apparatus containing an integral CO oxidation zone to solve the problem of regenerating a coke-containing catalyst that does not contain a CO o... | 03/15/2011 |
| 7906088 | Method of removing impurities from gas or liquid streams using copper oxide and halide salt Mixing small amounts of an inorganic halide, such as NaCl, to basic copper carbonate followed by calcination at a temperature sufficient to decompose the carbonate results in a significant improvement in resistance to reduction of the resulting copper oxide. The int... | 03/15/2011 |
| 7906081 | Internal grids for adsorbent chambers and reactors A milled plate is presented that is provided for use in a radial flow reactor. The milled plate has narrow slots milled in the plate on the solid particle side and slots of slightly greater width milled on the fluid side of the plate. The plates provide strength to ... | 03/15/2011 |
| 7902100 | Treatment of air to a catalyst regenerator to maintain catalyst activity The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock comprising an oxygenate in the presence of a molecular sieve catalys... | 03/08/2011 |
| 7901641 | Sprayer for at least one fluid One exemplary embodiment can be a sprayer for distributing at least one fluid in a vessel. The sprayer can include a first member having a first surface and a second surface forming at least one aperture there-through. Generally, the at least one aperture is skewed ... | 03/08/2011 |
| 7901640 | Optimized counter-current flow baffle A new reactor design is presented for a counter-current flowing reactor. The reactor has a catalyst flowing down through the reactor, and over baffles. Gas is admitted under the baffles and flows up through the solid catalyst bed. The design includes slotted plates ... | 03/08/2011 |
