Patent application number | Description | Published |
20080279735 | System for Catalytically Converting Oxygenates and Regenerating and Stripping Catalyst - A system of converting oxygenate-containing feedstock to light olefins comprises charging a reactor with catalyst, feeding the feedstock into the reactor, contacting the feedstock with the catalyst and converting the feedstock to olefins while depositing byproducts on catalyst resulting in spent catalyst, regenerating the spent catalyst by combustion gases, and stripping the regenerated catalyst of gases entrained in the regenerating step. The stripping step is accomplished using nitrogen gas to strip the entrained gases from the regenerate catalyst. In one embodiment, regenerated catalyst is passed through a regenerated catalyst stripper before it is returned to the reactor. | 11-13-2008 |
20090325783 | OTO QUENCH TOWER CATALYST RECOVERY SYSTEM UTILIZING A LOW TEMPERATURE FLUIDIZED DRYING CHAMBER - Systems and methods for recovering catalyst in an oxygenate to olefin process are provided that include removing a quench tower bottoms stream containing catalyst from a quench tower and passing the catalyst containing stream to a drying chamber, where the catalyst containing stream is dried to produce substantially dried catalyst. | 12-31-2009 |
20100099549 | Once Through Regeneration for an Olefin Cracking Reactor - A regeneration process for olefin cracking reactor is presented. The process utilizes the nitrogen waste stream from an air separation plant and the partially combusted effluent stream from the olefin cracking reactor is used to heat the nitrogen waste stream. The control of the heating of the nitrogen waste stream can be achieved through redirection of a portion of the heat from combustion to generate steam. | 04-22-2010 |
20110300026 | Two Stage Oxygenate Conversion Reactor with Improved Selectivity - A process and apparatus is presented for the improved selectivity of oxygenate conversion to olefins. The process includes passing a process stream through a two stage reactor, wherein the process stream is separated from the catalyst in the first stage before passing the process stream to the second stage. The catalyst is continuously passed through the two stages, and cycles through a regeneration unit to control the carbon content on the catalyst. | 12-08-2011 |
20110301393 | Two Stage Oxygenate Conversion Reactor with Improved Selectivity - A process and apparatus is presented for the improved selectivity of oxygenate conversion to olefins. The process includes passing a process stream through a two stage reactor, wherein the process stream is separated from the catalyst in the first stage before passing the process stream to the second stage. The catalyst is continuously passed through the two stages, and cycles through a regeneration unit to control the carbon content on the catalyst. | 12-08-2011 |
20120192714 | PROCESS FOR SEPARATING PARTICULATE SOLIDS FROM A GAS STREAM - One exemplary embodiment can be a process for separating particulate solids from a gas stream. The process can include regenerating a catalyst in a regenerator, separating particulate solids in first and second cyclone stages, passing the gas stream from the second cyclone stage to an external third stage separator, and passing the gas stream from the external third stage separator to a cyclone recirculator to obtain a clean gas stream. | 08-02-2012 |
20130247559 | PROCESS FOR MODIFYING A FLUID CATALYTIC CRACKING UNIT, AND AN APPARATUS RELATING THERETO - One exemplary embodiment can be a process for modifying a fluid catalytic cracking unit. The process can include adding a carbon monoxide boiler to the fluid catalytic cracking unit to receive a bypassed flue gas stream from a power recovery expander for increasing capacity of the fluid catalytic cracking unit. | 09-26-2013 |
20130252799 | MTO REGENERATOR MULTI-PASS GRIDS - A process and device for the regeneration of catalyst is presented. The device includes a series of grids within a regeneration vessel, where each grid includes small openings for the passage of gas, and larger openings for the passage of catalyst. The grids span horizontally across the vessel, and are spaced vertically apart to create a flow of catalyst down through the regenerator. | 09-26-2013 |
20130263735 | PROCESS FOR SEPARATING PARTICULATE SOLIDS FROM A GAS STREAM - One exemplary embodiment can be a process for separating particulate solids from a gas stream. The process can include regenerating a catalyst in a regenerator, separating particulate solids in first and second cyclone stages, passing the gas stream from the second cyclone stage to an external third stage separator, and passing the gas stream from the external third stage separator to a cyclone recirculator to obtain a clean gas stream. | 10-10-2013 |
20140294685 | REACTOR MULTI-PASS GRIDS FOR IMPROVED CATALYST HYDRODYNAMICS - A process and device for the flow of catalyst in a reactor is presented. The device includes a series of grids within a reactor vessel, where each grid includes small openings for the passage of gas and some catalyst particles, and larger openings for the more continuous passage of catalyst. The grids span horizontally across the vessel, and are spaced vertically apart to provide for the flow of catalyst down through the reactor | 10-02-2014 |
20140296603 | REACTOR MULTI-PASS GRIDS FOR IMPROVED CATALYST HYDRODYNAMICS - A process and device for the flow of catalyst in a reactor is presented. The device includes a series of grids within a reactor vessel, where each grid includes small openings for the passage of gas and some catalyst particles, and larger openings for the more continuous passage of catalyst. The grids span horizontally across the vessel, and are spaced vertically apart to provide for the flow of catalyst down through the reactor | 10-02-2014 |