Patent application number | Description | Published |
20090023967 | Processes and Apparatus for Making Detergent Range Alkylbenzenes Using Transalkylation - Dialkylbenzenes are transalkylated in the presence of benzene and solid catalyst. The transalkylation product is subjected to distillation to provide a lower-boiling, benzene-containing fraction which is fed to a transalkylation reactor as at least a portion of the benzene. Thus, high benzene to dialkylbenzene molar ratios can be economically maintained in order to enhance catalyst stability. | 01-22-2009 |
20090152170 | Mixed Matrix Adsorbent for Separation of Gasoline Components - A mixed matrix adsorbent is found for use in the removal of light alkanes from a gasoline stream. The mixed matrix comprises two adsorbents with one adsorbent having an LTA type structure and the other adsorbent having an MFI structure. | 06-18-2009 |
20090205945 | Process and apparatus for alkylation of benzene with aliphatic mono-olefin compound - Processes and apparatus for the alkylation of benzene with mono-olefin aliphatic compound in at least two reaction zones in the presence of solid alkylation catalyst use a crude distillation of the reaction effluent passing between reaction zones to remove a substantial portion of the alkylbenzene. The processes reduce the amount of heavies generated in an economically attractive manner. | 08-20-2009 |
20090292150 | Integrated Processes for Making Detergent Range Alkylbenzenes from C5-C6-Containing Feeds - Integrated processes for making detergent range alkylbenzenes from C | 11-26-2009 |
20090326305 | GUARD BED FOR REMOVING CONTAMINANTS FROM FEEDSTOCK TO A NORMAL PARAFFIN EXTRACTION UNIT - Processes and systems for removing contaminants from a paraffin containing feedstock are provided that include: providing a paraffin containing feedstock, passing the paraffin containing feedstock to an inlet of a guard bed that includes an adsorbent material, and contacting the paraffin containing feedstock with the adsorbent material in the guard bed to produce a treated paraffin containing feedstock. The processes and systems can also include removing the treated paraffin containing feedstock from an outlet of the guard bed, and passing the treated paraffin containing feedstock to a paraffin separation zone that separates normal paraffins from the treated paraffin containing feedstock. | 12-31-2009 |
20100004496 | Integrated Processes for Making Detergent Range Alkylbenzenes from C5-C6-Containing Feeds - Integrated processes for making detergent range alkylbenzenes from C | 01-07-2010 |
20100004497 | Integrated Processes for Making Detergent Range Alkylbenzenes from C5-C6-Containing Feeds - Integrated processes for making detergent range alkylbenzenes from C | 01-07-2010 |
20100075833 | Processes for Producing Alkylbenzenes Over Solid Acid Catalyst at Low Benzene to Olefin Ratios and Low Heavies Make - The alkylation of aromatic compound with acyclic mono-olefin is effected at low aromatic compound to mono-olefin ratios with reduced co-production of heavies. In the processes a small crystal, acidic FAU molecular sieve is used as a catalyst under alkylation conditions. This invention also relates to catalysts containing small crystal, acidic FAU molecular sieve and at least one other acidic catalytic component. | 03-25-2010 |
20100125162 | Heavy Paraffin Adsorption Separation Process - A process is presented for the selective separation and recovery of large normal paraffins from a heavy kerosene boiling point fraction. The process includes passing the heavy kerosene fraction through an adsorption separation system for separating the normal paraffins from the paraffin mixture. The recovered extract and raffinate streams are mixed with a diluent made up of a lighter hydrocarbon. The subsequent diluted extract and raffinate streams are passed through first fractionation columns to separate the desorbent from the diluent and the heavier paraffins. The mixture of the diluent and heavier paraffins is passed through a second set of fractionation columns to separate the diluent and the heavier paraffins. | 05-20-2010 |
20100249484 | SEPARATION SYSTEM AND METHOD - One exemplary embodiment can be a separation system. The separation system can include an adsorption zone, a rotary valve, a transition zone, and one or more pipes. Usually, the transition zone includes one or more lines communicating the rotary valve with the adsorption zone. The rotary valve alternatively may distribute an input of a feed or a desorbent to the adsorption zone or alternatively can receive an output of a raffinate or an extract from the adsorption zone in a line, and a remnant may remain in the line from a previous input or output. One or more pipes outside the transition zone communicating with the rotary valve can form at least one pipe volume receiving an input for dislodging a remnant or for receiving a remnant from the line. The remnant may be different from the input or output. | 09-30-2010 |
20110118517 | Manufacturing Process for Branched and Linear Alkylated Benzene as Precursor for Enhanced Oil Recovery Surfactant - A process is presented for the preparation of surfactants that are useable in enhanced oil recovery. The surfactants are long chained sulfonated alkylaryl compounds. The process includes recovering linear and lightly branched paraffins from a hydrocarbon stream, dehydrogenating the paraffins, and then alkylating benzene with the olefins generated. The process uses pentasil zeolites to selectively separate the normal and lightly branched paraffins from the hydrocarbon stream. | 05-19-2011 |
20110143918 | Alkylation Catalysts with Low Olefin Skeletal Isomerization Activity - A catalyst is presented for use in the production of linear alkylbenzenes. The catalyst includes two zeolites combined to improve the quality of the linear alkylbenzenes. The catalyst includes a first zeolite that is UZM-8 and a second zeolite that is a low silica to alumina ratio zeolite. The second zeolite is also cation exchanged with a rare earth elements to provide a zeolite that increases the alkylation of benzene while reducing the amount of skeletal isomerization. | 06-16-2011 |
20110143920 | Rare Earth Exchanged Catalyst for Use in Detergent Alkylation - A catalyst is disclosed for use in the alkylation of benzene with a substantially linear olefin. The catalyst allows for cation exchange with a rare earth element to increase the alkylation of benzene, while reducing the amount of isomerization of the alkyl group. This is important for increasing the quality of the alkylbenzene by increasing the linearity of the alkylbenzene. | 06-16-2011 |
20110144402 | ALKYLATION PROCESS USING CATALYSTS WITH LOW OLEFIN SKELETAL ISOMERIZATION ACTIVITY - A process is presented for the production of linear alkylbenzenes. The process includes contacting an aromatic compound with an olefin in the presence of a selective zeolite catalyst. The catalyst includes two zeolites combined to improve the linearity, and to produce detergent grade LAB. The two zeolites are selected to limit skeletal isomerization while producing a desired 2-phenyl content for the LAB. | 06-16-2011 |
20110144403 | Detergent Alkylation Using a Rare Earth Exchanged Catalyst - A process is disclosed using a new catalyst for use in the alkylation of benzene with a substantially linear olefin. The catalyst allows for cation exchange with a rare earth element to increase the alkylation of benzene, while reducing the amount of isomerization of the alkyl group. This is important for increasing the quality of the alkylbenzene by increasing the linearity of the alkylbenzene. | 06-16-2011 |
20110207981 | ALKYLATION PROCESS USING CATALYSTS WITH LOW OLEFIN SKELETAL ISOMERIZATION ACTIVITY - A process is presented for the production of linear alkylbenzenes. The process includes contacting an aromatic compound with an olefin in the presence of a selective zeolite catalyst. The catalyst includes two zeolites combined to improve the linearity, and to produce detergent grade LAB. The two zeolites are selected to limit skeletal isomerization while producing a desired 2-phenyl content for the LAB. | 08-25-2011 |
20110245556 | Ethylene Production By Steam Cracking of Normal Paraffins - A simulated moving bed adsorptive separation process for preparing the separate feed streams charged to naphtha reforming unit and a steam cracking unit has been developed. The feed stream to the overall unit is passed into the adsorptive separation unit. The desorbent in the adsorptive separation is C12 hydrocarbons. The simulated moving bed adsorptive separation separates the components of the feed stream into a normal paraffin stream, which is charged to the steam cracking process, and non-normal hydrocarbons which are passed into a reforming zone. The desorbent is readily separated from the normal paraffin stream and from the non-normal paraffin stream and the simulated moving bed adsorption zone is operated at an A/Fn ratio of from about 0.90 to about 0.92. | 10-06-2011 |
20110282125 | HEAVY OLEFIN PRODUCTION PROCESS - A process is presented for the selective separation and recovery of large normal paraffins from a heavy kerosene boiling point fraction. The process includes passing the heavy kerosene fraction through an adsorption separation system for separating the normal paraffins from the paraffin mixture. The recovered extract and raffinate streams are mixed with a diluent made up of a lighter hydrocarbon. The subsequent diluted extract and raffinate streams are passed through first fractionation columns to separate the desorbent from the diluent and the heavier paraffins. The mixture of the diluent and heavier paraffins is passed through a second set of fractionation columns to separate the diluent and the heavier paraffins. | 11-17-2011 |
20110319698 | PROCESS FOR UPGRADING SWEETENED OR OXYGEN-CONTAMINATED KEROSENE OR JET FUEL, TO MINIMIZE OR ELIMINATE ITS TENDENCY TO POLYMERIZE OR FOUL WHEN HEATED - A process is presented for the removal of oxygen from a hydrocarbon stream. The oxygen can react and cause polymerization of the hydrocarbons when the hydrocarbon stream is heated. Controlling the removal of the oxygen from the hydrocarbon stream produces a hydrocarbon stream that is substantially free of oxygen and has a reduced activity for generating undesired compounds. | 12-29-2011 |
20120065444 | Method for Controlling 2-Phenyl Isomer Content of Linear Alkylbenzene and Catalyst Used in the Method - A method for controlling 2-isomer content in linear alkylbenzene obtained by alkylating benzene with olefins and catalyst used in the method. | 03-15-2012 |
20120090731 | SEPARATION SYSTEM AND METHOD - One exemplary embodiment can be a separation system. The separation system can include an adsorption zone, a rotary valve, a transition zone, and one or more pipes. Usually, the transition zone includes one or more lines communicating the rotary valve with the adsorption zone. The rotary valve alternatively may distribute an input of a feed or a desorbent to the adsorption zone or alternatively can receive an output of a raffinate or an extract from the adsorption zone in a line, and a remnant may remain in the line from a previous input or output. One or more pipes outside the transition zone communicating with the rotary valve can form at least one pipe volume receiving an input for dislodging a remnant or for receiving a remnant from the line. The remnant may be different from the input or output. | 04-19-2012 |
20120103194 | SIMPLIFIED PROCESS TO REMOVE DISSOLVED OXYGEN FROM HYDROCARBON STREAMS - A process is presented for the removal of dissolved oxygen from hydrocarbon streams. The hydrocarbons streams include kerosene and jet fuels. The process includes mixing the hydrocarbons streams with an oxygen free gas to form a gas-liquid mixture. The mixture is allowed to disengage into a gas stream and a liquid stream, thereby removing dissolved oxygen from the hydrocarbon stream. | 05-03-2012 |
20120108872 | HEAVY ALKYLBENZENE TRANSALKYLATION OPERATING COST REDUCTION - A process for increasing the production of monoalkylbenzenes is presented. The process includes utilizing a transalkylation process to convert dialkylbenzenes to monoalkylbenzenes. The transalkylation process recycles a portion of the effluent stream from the transalkylation reactor back to the feed of the transalkylation reactor. The recycled dialkylbenzenes and a portion of the recycled benzene are converted to monoalkylbenzenes. | 05-03-2012 |
20120149959 | Method to Adjust 2-Phenyl Content of an Alkylation Process for the Production of Linear Alkyl Benzene - A process is presented for controlling the output of monoalkylated benzenes. The alkylbenzenes are linear alkylbenzenes and the process controls the 2-phenyl content of the product stream. The control of the process to generate a linear alkylbenzene with a 2-phenyl content within a desired range by recycling a portion of the effluent from the alkylation reactor to the inlet of the reactor. | 06-14-2012 |
20120152802 | Elimination of Residual Transfer Line Raffinate from Feed to Increase Normal Paraffin Separation Unit Capacity - A process to increase the capacity of the adsorbent in a normal paraffin adsorption separation system is presented. A tertiary flush stream is used to improve the capacity of the simulated moving bed system by flushing residual raffinate from the feed transfer line. The flushing removes residual raffinate containing desorbent that competes with the adsorption of normal paraffins from the feedstream. The flush stream is a material that will displace fluid in the column, but will not enter the pores of the adsorbent. | 06-21-2012 |
20120157744 | RECYCLING FLUSH STREAMS IN ADSORPTION SEPARATION PROCESS FOR ENERGY SAVINGS - A process to reduce flush circulation rates in an adsorption separation system is presented. The flush stream is used to improve the capacity of the simulated moving bed system by flushing the contents of the transfer lines containing raffinate material back into the adsorbent column. The flush stream is a material that is used to flush the head chambers in the column, or from the rotary valve flush dome sealant. | 06-21-2012 |
20120160742 | High Purity Heavy Normal Paraffins Utilizing Integrated Systems - A process is presented for producing a purified normal paraffin product stream. The process includes passing a hydrocarbon stream having the desired normal paraffins to an adsorption separation system. A process stream generated from the separation system and having the normal paraffins is passed to an adsorption unit for the selective adsorption of aromatic compounds from the process stream, thereby producing a purified product. | 06-28-2012 |
20120302813 | PROCESSES AND APPARATUSES FOR PRODUCING A SUBSTANTIALLY LINEAR PARAFFIN PRODUCT - Processes and apparatuses are provided for producing a normal paraffin product or a substantially linear paraffin product from a feed including normal hydrocarbons, non-normal hydrocarbons, and contaminants. The contaminants are extracted from the feed through contact with an ionic liquid stream to form a clean stream of hydrocarbons. The desired hydrocarbons are selectively adsorbed from the clean stream of hydrocarbons with a molecular sieve to remove the desired hydrocarbons from the non-desired hydrocarbons. A desorbent recovers the desired hydrocarbons from the molecular sieve. Then the desired hydrocarbons are separated from the desorbent to yield the normal paraffin product. | 11-29-2012 |
20130096357 | HEAVY ALKYLBENZENE TRANSALKYLATION OPERATING COST REDUCTION - A process for increasing the production of monoalkylbenzenes is presented. The process includes utilizing a transalkylation process to convert dialkylbenzenes to monoalkylbenzenes. The transalkylation process recycles a portion of the effluent stream from the transalkylation reactor back to the feed of the transalkylation reactor. The recycled dialkylbenzenes and a portion of the recycled benzene are converted to monoalkylbenzenes. | 04-18-2013 |
20130172646 | Method to Adjust 2-Phenyl Content of an Alkylation Process for the Production of Linear Alkyl Benzene - A process is presented for controlling the output of monoalkylated benzenes. The alkylbenzenes are linear alkylbenzenes and the process controls the 2-phenyl content of the product stream. The control of the process to generate a linear alkylbenzene with a 2-phenyl content within a desired range by recycling a portion of the effluent from the alkylation reactor to the inlet of the reactor. | 07-04-2013 |
20130178678 | METHOD FOR CONTROLLING 2-PHENYL ISOMER CONTENT OF LINEAR ALKYLBENZENE AND CATALYST USED IN THE METHOD - A method for controlling 2-isomer content in linear alkylbenzene obtained by alkylating benzene with olefins and catalyst used in the method. | 07-11-2013 |
20130253219 | Production of Alkane Sulfonates - A process for the production of olefin sulfonates is presented. The process comprising generating olefins from normal alkanes through a dehydrogenation unit to produce a mixture of alkanes and alkenes. The mixture is sulfonated to react the olefins and generate olefin sulfonates. The olefin sulfonates are separated from the normal alkanes to produce a product stream, with the normal alkanes recycled to the dehydrogenation unit. | 09-26-2013 |
20130253240 | METHODS FOR PRODUCING LINEAR ALKYLBENZENES, PARAFFINS, AND OLEFINS FROM NATURAL OILS AND KEROSENE - A method for producing a linear paraffin product from natural oil and kerosene includes providing a first feed stream comprising kerosene, pre-fractionating the first feed stream to produce a heart cut paraffin stream comprising paraffins in a heart cut range, and combining the heart cut paraffin stream with a second feed stream comprising natural oil to form a combined stream. The method further includes deoxygenating the natural oil and fractionating the combined stream to remove paraffins that are heavier than the heart cut range. | 09-26-2013 |
20130253241 | METHODS FOR PRODUCING LINEAR ALKYLBENZENES, PARAFFINS, AND OLEFINS FROM NATURAL OILS AND KEROSENE - A method for producing a linear paraffin product from natural oil and kerosene includes providing a first feed stream comprising kerosene, pre-fractionating the first feed stream to produce a heart cut paraffin stream comprising paraffins in a heart cut range, and combining the heart cut paraffin stream with a second feed stream comprising natural oil to form a combined stream. The method further includes deoxygenating the natural oil and fractionating the combined stream to remove paraffins that are heavier than the heart cut range. | 09-26-2013 |
20140038810 | METHOD FOR CONTROLLING 2-PHENYL ISOMER CONTENT OF LINEAR ALKYLBENZENE AND CATALYST USED IN THE METHOD - A method for controlling 2-isomer content in linear alkylbenzene obtained by alkylating benzene with olefins and catalyst used in the method. | 02-06-2014 |
20140046108 | METHOD FOR CONTROLLING 2-PHENYL ISOMER CONTENT OF LINEAR ALKYLBENZENE AND CATALYST USED IN THE METHOD - A method for controlling 2-isomer content in linear alkylbenzene obtained by alkylating benzene with olefins and catalyst used in the method. | 02-13-2014 |
20140378700 | LIQUID PHASE DEHYDROGENATION OF HEAVY PARAFFINS - A liquid phase dehydrogenation process is described. The process includes reacting a liquid feed stream containing C | 12-25-2014 |
20140378722 | Detergent Alkylation Process for Controlling Alkylation Exotherm with Paraffins - The process of producing an alkylbenzene compound from the alkylation of an aromatic compound with an acyclic monoolefin is an exothermic process. A process for maintaining a relatively constant temperature improves the process and allows for controlling the yields. The process includes recycling a compound through the reactor that is relatively inert, but will moderate the exotherm, while maintaining the 2-phenyl content of the final alkylbenzene product. | 12-25-2014 |
20140378723 | PROCESS FOR PRODUCTION OF DIALKYLBENZENES - A method of making dialkylaromatics as a primary product is described. The design involves a dual reaction zone system, both reaction zones containing alkylation catalysts. The olefin feed is split into two portions (or two feeds are used), the first portion being fed to a first alkylation reaction zone and reacted with a first olefin. The other portion of olefin is reacted in a second reaction zone with the linear alkylaromatics formed in the first reaction zone to form the dialkylaromatics. | 12-25-2014 |