Patent application number | Description | Published |
20080242910 | Conversion of Dimethylether to Propylene using Moving Bed Technology - The average cycle propylene selectivity of an oxygenate to propylene (OTP) process using one or more fixed beds of a dual-function oxygenate conversion catalyst is substantially enhanced by the use of moving bed reactor technology in the hydrocarbon synthesis portion of the OTP flow scheme in lieu of fixed bed technology coupled with the selection of a catalyst on-stream cycle time of 200 hours or less. Those provisions hold the build-up of coke deposits on the catalyst to a level which does not substantially degrade dual-function catalyst activity, oxygenate conversion and propylene selectivity, thereby enabling maintenance of propylene average cycle yield at essentially start-of-cycle levels. The propylene average cycle yield improvement enabled by the present invention over that achieved by the fixed bed system of the prior art using the same or a similar catalyst system is of the order of about 1.5 to 5.5 wt-% or more. | 10-02-2008 |
20100021357 | Integrated Oxygenate Conversion and Product Cracking - Improved processing of an oxygenate-containing feedstock for increased production or yield of light olefins. Such processing involves oxygenate conversion to olefins and subsequent cracking of heavier olefins wherein at least a portion of the products from each of the reactors is elevated in pressure, using a common compressor, prior to being routed to a common product fractionation and recovery section. In one particular embodiment, the cracked product gas can be treated to remove acid gas therefrom. In another embodiment, the olefin cracking reactor is a moving bed reactor. | 01-28-2010 |
20100048965 | Integrated Oxygenate Conversion and Product Cracking - Improved processing of an oxygenate-containing feedstock for increased production or yield of light olefins. Such processing involves oxygenate conversion to olefins and subsequent cracking of heavier olefins wherein at least a portion of the products from each of the reactors is elevated in pressure, using a common compressor, prior to being routed to a common product fractionation and recovery section. In one particular embodiment, the cracked product gas can be treated to remove acid gas therefrom. In another embodiment, the olefin cracking reactor is a moving bed reactor. | 02-25-2010 |
20100087693 | Integrated Oxygenate Conversion and Product Cracking - Improved processing of an oxygenate-containing feedstock for increased production or yield of light olefins. Such processing involves oxygenate conversion to olefins and subsequent cracking of heavier olefins wherein at least a portion of the products from each of the reactors is elevated in pressure, using a common compressor, prior to being routed to a common product fractionation and recovery section. In one particular embodiment, the cracked product gas can be treated to remove acid gas therefrom. In another embodiment, the olefin cracking reactor is a moving bed reactor. | 04-08-2010 |
20140296587 | Integrated Process for Increasing Butadiene Production - A process is present for increasing the yields of 1,3 butadiene. The process includes recovering 1,3 butadiene from a cracking unit that generates a crude C4 stream. The 1,3 butadiene is separated and the remaining C4 process stream components are further reacted and dehydrogenated to generate 1,3 butadiene in a subsequent process stream. The subsequent process stream is recycled to recover the additional 1,3 butadiene. | 10-02-2014 |
20140371503 | SINGLE STAGE REACTOR SYSTEM WITH OXIDATIVE PREHEAT FOR DEHYDROGENATION OF HYDROCARBONS - A single stage dehydrogenation reactor system including a charge heater and one or more reactors is described. The hydrocarbon feed is combined with hydrogen and heated in a charge heater to a temperature lower than the dehydrogenation temperature to avoid thermal cracking. Before entering the dehydrogenation reactors, oxygen is added. The oxidative preheat then takes place in the presence of the dual functional catalyst which has dehydrogenation and selective oxidation activities. The oxygen selectively burns hydrogen and raises the reaction temperature, and the dehydrogenation reaction then occurs. | 12-18-2014 |
20140371504 | FLUIDIZED CATALYST CIRCULATION REACTOR FOR PARAFFIN OXYDATIVE DEHYDROGENATION - A process of oxidative dehydrogenation in a fluidized riser reactor is described. Hydrocarbon feed and catalyst are fed to the bottom of the fluidized riser reactor. Part of the hydrogen produced in the dehydrogenation reaction is oxidized using oxygen introduced into the riser reactor through oxygen injection ports to produce the heat required for the dehydrogenation reaction. | 12-18-2014 |
Patent application number | Description | Published |
20090297462 | WATER-SOLUBLE POLYAMINOAMIDES AS SUNSCREEN AGENTS - A UV-protective water-soluble polyaminoamide comprising UV-absorbing end groups, wherein the polyaminoamide absorbs ultraviolet light radiation having a wavelength of about 200 nm to about 420 nm, compositions comprising the UV-protective polyaminoamide and methods of treating substrates with the UV-protective polyaminoamide. | 12-03-2009 |
20100122785 | CREPING ADHESIVES WITH IMPROVED FILM PROPERTIES - The invention provides a composition of matter used to produce very soft high grades of tissue paper. The composition of matter comprises a PAE resin acidified with a multifunctional acid. The multifunctional acid includes but is not limited to carboxyl and sulfonyl. The acid has a functional group selected from carboxyl and sulfonyl and a functional group selected from carboxyl, sulfonyl, hydroxyl, lactone, phenol, amine and heterocycle. The PAE resin facilitates the use of an adhesive in a Yankee Dryer apparatus that is durable when the adhesive is wet but remains soft when the adhesive becomes dry. These properties allow the adhesive to be strong and remain engaged to the dryer apparatus when wet but be easily removed by the creping blade when dry. | 05-20-2010 |
20130192826 | COMPOSITION AND METHOD FOR RECOVERING HYDROCARBON FLUIDS FROM A SUBTERRANEAN RESERVOIR - A composition comprising crosslinked expandable polymeric microparticles capable of hydrolysis at or below neutral pH and a method of modifying the permeability to water of a subterranean formation by introducing such compositions into the subterranean formation is disclosed and claimed. This invention further relates to compositions and methods for the recovery of hydrocarbon fluids from a subterranean reservoir or formation subjected to CO | 08-01-2013 |
20130233804 | APPLICATION OF FLUORESCENT DYES TO TRACE AND QUANTIFY CHEMICAL DOSAGE IN INDUSTRIAL WASTEWATER - Disclosed are methods and chemicals that can be used as fluorescent tracers in the treatment of raw water and/or industrial wastewater. The fluorescent tracers are certain chemicals discovered to have beneficial properties for such uses, particularly having little variance in fluorescence emission for conditions that are known to interfere with fluorescence emission. The fluorescent tracers comprise rhodamine dyes. | 09-12-2013 |
20140110071 | NOVEL CREPING ADHESIVES AND METHODS TO MONITOR AND CONTROL THEIR APPLICATION - This invention is method of creping a paper web comprising a) applying to a rotating creping cylinder an adhesive composition having a pH of about 6.5 to about 8 and comprising one or more vinylamine/N-vinyl formamide polymers composed of about 10 to about 99 mole percent vinylamine monomer and about 90 to about 1 mole percent N-vinylformamide monomer; b) pressing the paper web against the creping cylinder to effect adhesion of the paper web to the creping cylinder; and c) dislodging the paper web from the creping cylinder with a doctor blade. | 04-24-2014 |
20140209304 | MOBILITY CONTROL POLYMERS FOR ENHANCED OIL RECOVERY - Disclosed herein are water-soluble polymers comprising hydrolyzable cross-linked monomer units, and methods for recovering hydrocarbon fluids from a subterranean formation using the water-soluble polymers. | 07-31-2014 |
20140262090 | Methods for Increasing Retention and Drainage in Papermaking Processes - Disclosed herein are methods of increasing retention and drainage in papermaking processes using high molecular-weight, water-soluble polymers. | 09-18-2014 |
Patent application number | Description | Published |
20140174770 | System and Method for Optimizing a Cut Location - A system for determining a cut location at a work surface includes a position sensor and a controller. The controller stores a final design plane of the work surface and determines an actual profile of the work surface. A plurality of target profiles extending along a path are determined, each corresponding to a cut location. The target profiles are based at least in part upon the cut location, a loading profile, slot parameters, and the actual profile of the work surface. The controller is further configured to determine a lowest cost target profile and the lowest cost target profile defines an optimized cut location. A method is also provided. | 06-26-2014 |
20140180444 | System and Method for Modifying a Path for a Machine - A system for modifying a path of operation of a machine includes a position sensor and a controller. The controller stores the path of operation, receives a plurality of position signals as the work implement moves material along the path of operation, and determines the position of the work surface. The controller further determines an amount of material moved based at least in part upon the position of the work surface and modifies parameters used to determine a subsequent path of operation if the amount of material moved exceeds a predetermined amount. | 06-26-2014 |
20140180547 | System and Method for Estimating Material Characteristics - A system for determining material characteristics of a material of a work surface includes a position sensor and a controller. The controller stores a first estimate of the material characteristics and utilizes a planning system to determine an expected profile. The expected profile is based at least in part upon the first estimate of the material characteristics. The controller determines an actual profile of the work surface, compares the expected profile to the actual profile, and determines a second estimate of the material characteristics based at least in part upon the difference between the expected profile and the actual profile. | 06-26-2014 |
20140180548 | System and Method for Optimizing a Cut Location - A system for determining a cut location at a work surface includes a position sensor and a controller. The controller stores a desired operating parameter and a final design plane of the work surface and determines an actual profile of the work surface. The controller determines a plurality of target profiles corresponding to different cut locations. The target profiles are based at least in part upon the cut location, a loading profile, slot parameters, and the actual profile of the work surface. The controller further determines an optimized target profile relative to the desired operating parameter and the optimized target profile defines an optimized cut location. | 06-26-2014 |