| Patent application number | Description | Published |
|---|
| 20080207973 | Purge Gas Streams to Stagnant Zones within Oxygenate-to-Olefin Reactor - The present invention comprises a process for conversion of oxygenates to olefins comprising contacting within a reactor the oxygenates with a catalyst to produce light olefins and wherein the reactor comprises at least two zones, a first zone wherein gas circulates at a faster rate than a second zone wherein a gas circulates at a slower rate; and inserting a quantity of inert gas into the second zone to increase circulation of any materials located in said second zone. The invention prevents accumulation of undesirable by-products within stagnant zones within the reactor and reduces the amount of coke deposited on catalyst or on surfaces within these zones. | 08-28-2008 |
| 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 |
| 20100236982 | Process for Feed Preheating with Flue Gas Cooler - Hydrocarbon feed to a catalytic reactor can be heat exchanged with flue gas from a catalyst regenerator. This innovation enables recovery of more energy from flue gas thus resulting in a lower flue gas discharge temperature. As a result, other hot hydrocarbon streams conventionally used to preheat hydrocarbon feed can now be used to generate more high pressure steam. | 09-23-2010 |
| 20100239475 | Apparatus for Feed Preheating with Flue Gas Cooler - Hydrocarbon feed to a catalytic reactor can be heat exchanged with flue gas from a catalyst regenerator. This innovation enables recovery of more energy from flue gas thus resulting in a lower flue gas discharge temperature. As a result, other hot hydrocarbon streams conventionally used to preheat hydrocarbon feed can now be used to generate more high pressure steam. | 09-23-2010 |
| 20110060178 | SLURRY COLUMN GASOLINE ALKYLATION USING GAS PHASE OLEFIN INJECTION - Alkylation systems and processes are provided herein that include a slurry reactor. The slurry reactor receives a reactor feed slurry including catalyst and liquid isobutane, a olefin feed, and a circulating reactor vapor stream, where the slurry reactor produces a reactor liquid effluent stream, the reactor liquid effluent stream including catalyst, isobutane, and a liquid alkylate product. The catalyst in the reactor feed slurry can be regenerated catalyst from a catalyst regenerator. The catalyst can be regenerated after being removed from the liquid alkylate product and isobutane in the reactor liquid effluent stream. | 03-10-2011 |
| 20110137101 | Process for the Production of Propylene - A process for catalyst regeneration is presented. The process regenerates a catalyst in a paraffin dehydrogenation process, where the reaction is endothermic. The regeneration process provides the heat for the process through heating the catalyst and removes the need for a charge heater to the dehydrogenation reactor, which in turn eliminates high temperature thermal residence time which eliminates thermal cracking of the feed and improves the overall product selectivity. In addition, plot area, equipment costs and operating complexity are reduced. | 06-09-2011 |
| 20110269620 | PROCESS FOR REGENERATING CATALYST IN A FLUID CATALYTIC CRACKING UNIT - One exemplary embodiment can be a process for regenerating catalyst in a fluid catalytic cracking unit. Generally, the process includes providing a feed to a riser of a reaction vessel, and providing a stream to a distributor positioned within a void proximate to an inlet receiving unregenerated catalyst in a regenerator. The feed can include at least one of a gas oil, a vacuum gas oil, an atmospheric gas oil, a coker gas oil, a hydrotreated gas oil, a hydrocracker unconverted oil, and an atmospheric residue | 11-03-2011 |
