Patent application number | Description | Published |
20100300930 | PROCESS FOR MAKING HIGH OCTANE GASOLINE WITH REDUCED BENZENE CONTENT BY BENZENE ALKYLATION AT HIGH BENZENE CONVERSION - A process for the alkylation of a benzene-containing refinery stream such as reformate with light refinery olefins which is capable of achieving high benzene conversion levels operates in a fixed bed of an MWW zeolite catalyst, preferably MCM-22, in single pass mode in the liquid phase at a relatively low to moderate temperatures with pressure maintained at a value adequate to ensure subcritical operation. High levels of benzene conversion with conversions of at least 90% and higher, e.g. 92% or 95% or even higher are achievable. A high octane product is produced, comprising mono-, di- and tri-alkylbenzenes with lesser levels of the tetra-substituted products. By operating with staged olefin injection, the end point of the alkylation product can be maintained at a low value while, at the same time, achieving high levels of benzene and olefin conversion. | 12-02-2010 |
20110132803 | TWO STAGE HYDROPROCESSING WITH DIVIDED WALL COLUMN FRACTIONATOR - A divided wall column allows for fractionation of multiple streams while maintaining separate product qualities. Effluents from multiple stages of a reaction system can be processed in a single divided wall column. The divided wall column can produce multiple cuts from each separated area, as well as at least one output from a common area. | 06-09-2011 |
20110147263 | PROCESS AND SYSTEM TO CONVERT OLEFINS TO DIESEL AND OTHER DISTILLATES - The present invention provides a process for producing a hydrocarbon fuel composition that includes introducing an olefin feed composition including light olefins to an oligomerization catalyst to yield an intermediate composition including olefins having at least four carbon atoms, introducing the intermediate composition and a second feed of aromatic compounds (e.g., a feed including from 2 to 99.9% benzene or other alkylatable aromatics) to an aromatic alkylation catalyst to yield a fractionation feed to provide a composition which can be further refined to provide one or more hydrocarbon fuel compositions. | 06-23-2011 |
20110259793 | Low pressure production of low cloud point diesel - A diesel fuel product with beneficial cold flow properties can be produced. A suitable feedstock for forming a diesel boiling range product can be hydrotreated to have a sulfur content of at least about 100 wppm and then dewaxed. This two stage process can allow for production of an arctic or winter diesel without use of high pressures. Optionally, a divided wall column fractionator can be used to allow a single separation stage to handle the effluent from both the hydroprocessing and the dewaxing stages. | 10-27-2011 |
20120000824 | INTEGRATED GAS AND LIQUID PHASE PROCESSING OF BIOCOMPONENT FEEDSTOCKS - A mineral feed can be hydrotreated in a trickle-bed reactor or other stage in a continuous gas-phase environment. The effluent from the hydrotreatment stage can be separated to remove gas-phase impurities. The remaining liquid effluent from the hydrotreating stage can then be introduced, in total or in part, into a second stage/reactor. A feed of biocomponent origin can also be introduced into the second stage/reactor. The second stage/reactor can be operated to perform deoxygenation of the mixture of biocomponent feed and hydrotreated liquid effluent in a continuous liquid phase environment. | 01-05-2012 |
20120004477 | LIQUID PHASE DISTILLATE DEWAXING - Hydrocarbon feeds can be hydrotreated in a continuous gas-phase environment and then dewaxed in a liquid-continuous reactor. The liquid-continuous reactor can advantageously be operated in a manner that avoids the need for a hydrogen recycle loop. A contaminant gas can be added to the hydrogen input for the liquid-continuous reactor to modify the hydrogen consumption in the reactor. | 01-05-2012 |
20120004478 | TWO STAGE HYDROPROCESSING WITH DIVIDED WALL COLUMN FRACTIONATOR - A divided wall column can allow for fractionation of multiple streams while maintaining separate product qualities. Effluents from multiple stages of a reaction system can be processed in a single divided wall column. The divided wall column can produce multiple cuts from each separated area, as well as at least one output from a common area. At least one reaction stage can advantageously have a continuous liquid phase environment. | 01-05-2012 |
20120156111 | CATALYST BED PLATFORM WITH CENTER SUPPORT PIPE - A structure and method are provided for adding a catalyst bed platform to an existing reactor without welding to the structural portion of the reactor walls. The structure is constructed from components that can be passed through an existing opening in a reactor. The structure allows a catalyst bed in an existing reactor to be divided into catalyst beds with a reduced length to diameter ratio. | 06-21-2012 |
20120237415 | MODULAR CATALYST BED SUPPORT - A modular catalyst bed support can be used to increase the number of catalyst beds available in a reactor. The modular catalyst bed support can include a lattice with a plurality of lattice openings and modules inserted into the lattice openings. The modular catalyst bed support can rest on top of an underlying catalyst bed, which can reduce or eliminate the need for attachment of the modular catalyst bed support to the walls of the reactor. | 09-20-2012 |
20130130893 | ACTIVATION OF DUAL CATALYST SYSTEMS - Methods are provided for liquid phase activation of dewaxing and/or hydrofinishing catalysts that include a molecular sieve or other acidic crystalline support. The methods are compatible with activating the catalysts as part of a catalyst system that also includes a hydrotreating catalyst. | 05-23-2013 |
20140027345 | VACUUM GAS OIL CONVERSION PROCESS - An integrated thermal and catalytic process for improving the yield of middle distillate from heavy petroleum oil feeds comprises cracking the heavy portion (345° C.+) of the feed in a thermal conversion zone, followed by hydrotreating the thermally cracked product and the lighter portion of the feed and then separating the hydrotreated product into a bottoms fraction which is passed to a catalytic cracking step. | 01-30-2014 |
20140037419 | PROCESS FOR REACTOR CATALYST LOADING - Methods, devices and processes for effectively loading catalysts into reactor vessels. In particular methods, devices and processes for effectively loading catalysts into fixed bed reactors utilizing inducted vibrational energy to improve catalyst loading performance, thereby resulting in improved flow distribution through the catalyst beds at designed operating conditions. The methods herein are particularly effectively for improving the performance of new or existing catalyst bed configurations of vertically-oriented two-phase hydroprocessing fixed bed reactors. | 02-06-2014 |
20140174982 | MERCAPTAN REMOVAL USING MICROREACTORS - Processes are provided herein for producing naphtha boiling range products with a desired sulfur content by reducing the mercaptan content of the naphtha boiling range products after the products exit a hydroprocessing stage. Due to mercaptan reversion, naphtha boiling range products that contain even small amounts of olefins can have a higher than expected sulfur content after hydroprocessing. In order to reduce or mitigate the effects of mercaptan reversion, microchannel reactors (or microreactors) can be placed in a processing system downstream of a reactor that produces a low sulfur naphtha product. The microreactors can include a coating of metals that have activity for hydrodesulfurization. By passing at least a portion of the naphtha product through the downstream microreactors, the mercaptans formed by reversion reactions can be reduced or eliminated, resulting in a naphtha product with possessing a very low sulfur content. | 06-26-2014 |
20140294041 | METHOD AND SYSTEM FOR DETERMINING FLOW DISTRIBUTION THROUGH A COMPONENT - Systems and methods for determining the flow distribution of a fluid through a component with a sensing cable including an optical fiber sensor array aligned with a heating element disposed in the component. An excitation source is configured to propagate at least one heat pulse through the heating element along at least a portion of the sensing cable to affect an exchange of thermal energy between the heating element and the fluid exposed to the sensing cable. An optical signal is adapted to receive a signal from each of a plurality of sensor locations and measure a temperature profile corresponding to the heat pulse at the sensor locations. A control unit is configured to determine a flow of the fluid by determining one or more properties of the fluid exposed to the sensing cable at each of the plurality of sensor locations based on the temperature profile corresponding thereto. The present invention can be effective in accurate and high spatial resolution of flow distributions through vessel components, such as a particulate bed (such as a reactor catalyst bed), a wash bed including packing material, an absorbent bed, a structured bed, a filter, or the like. | 10-02-2014 |