Patent application number | Description | Published |
20150161081 | TECHNIQUES FOR SERVER-SIDE DETERMINATION OF FONT SUBSETS - A computer-implemented technique is presented. The technique can include receiving, at a server comprising one or more processors, a first request from a computing device, the first request being for a source document associated with a web page, the source document specifying a font in which to display text in the source document. The technique can include obtaining, at the server, the source document indicated by the first request. The technique can include determining, at the server, a subset of the font by identifying unique characters in the source document, the subset of the font including less than all of the characters of the font. The technique can also include providing, from the server, the source document and information identifying the subset of the font to the computing device. | 06-11-2015 |
20150161082 | TECHNIQUES FOR ANALYZING WEB PAGES TO DETERMINE FONT SUBSETS - A computer-implemented method technique can intercept, at a server including one or more processors, a first request for a source document representing a web page, the first request being transmitted from a computing device to a web server. The first request can include web browser information indicating web browser software executing on the computing device. The technique can intercept the source document being transmitted from the web server to the computing device in response to the first request. The source document can specify one or more fonts in which to display text in the source document. The technique can generate the web page, determine unique characters displayed at the web page, and obtain one or more font subsets. The technique can then transmit information to the computing device based on whether the web browser software is capable of displaying a font family having a plurality of fonts. | 06-11-2015 |
Patent application number | Description | Published |
20080221378 | Apparatus and Process for Cracking Hydrocarbonaceous Feed Utilizing a Pre-Quenching Oil Containing Crackable Components - An apparatus and process are provided for cracking hydrocarbons. Hot, cracked effluent is removed to a quench header where it is pre-quenched with an oil containing crackable components, e.g., 1000° F. | 09-11-2008 |
20080274023 | Process for Reducing Fouling from Flash/Separation Apparatus during Cracking of Hydrocarbon Feedstocks - Hydrocarbon feedstock containing resid is cracked by a process comprising: (a) heating said hydrocarbon feedstock; (b) mixing the heated hydrocarbon feedstock with steam to form a mixture stream; (c) introducing the mixture stream to a flash/separation apparatus to form i) a vapor phase comprising coke precursors existing as uncoalesced condensate, and ii) a liquid phase; (d) removing the vapor phase as overhead and the liquid phase as bottoms from the flash/separation apparatus; (e) treating the overhead by contacting with a condensing means downstream of the flash/separation apparatus to at least partially coalesce the coke precursors to provide residue hydrocarbon liquid, and subsequently removing the hydrocarbon liquid; (f) heating the treated overhead to provide a heated vapor phase (g) cracking the heated vapor phase in a radiant section of a pyrolysis furnace to produce an effluent comprising olefins, the pyrolysis furnace comprising a radiant section and a convection section; and (h) quenching the effluent and recovering cracked product therefrom. An apparatus for carrying out the process is also provided. | 11-06-2008 |
20090050530 | Process and Apparatus for Steam Cracking Hydrocarbon Feedstocks - The present disclosure provides a process for treating a hydrocarbon feedstock comprising: (a) feeding the hydrocarbon feedstock at a linear velocity equal to or less than 0.9 m/s to a first preheating zone in the convection section of a steam cracking furnace; (b) preheating the hydrocarbon feedstock in the first preheating zone to vaporize less than 99 wt. % of the hydrocarbon feedstock to form a vapor-liquid mixture; (c) separating at least a portion of the vapor-liquid mixture to form a vapor fraction and a liquid fraction; and (d) feeding at least a portion of the vapor fraction to the steam cracking furnace. | 02-26-2009 |
20090107887 | Vapor/Liquid Separation Apparatus - A vapor/liquid separation apparatus for treating a flow of vapor/liquid mixtures of hydrocarbons and steam comprises a vertical drum with a side inlet to introduce hydrocarbon/steam mixtures, an overhead vapor outlet, and a lower section in communication with a cylindrical boot of less diameter than the drum, the boot comprising sufficient gas-liquid contact surface, e.g., that provided by one or more sheds, baffles and/or distillation trays, to provide at least a partial theoretical distillation stage, and a lower portion for receiving liquid from the drum, a lower outlet for removing the liquid, and an inlet for introducing a stripping gas such as steam, hydrogen, light crackable hydrocarbon, and/or methane, below the distillation tray and preferably above the level of liquid in the boot. | 04-30-2009 |
20100096296 | Method For Processing Hydrocarbon Pyrolysis Effluent - A method is disclosed for treating gaseous effluent from a hydrocarbon pyrolysis unit to provide steam cracked tar of reduced asphaltene and toluene insolubles content. The method is suitable for preparing reduced viscosity tar useful as a fuel blending stock, or feedstock for producing carbon black, while reducing or eliminating the need for externally sourced lighter aromatics additives to meet viscosity specifications. The method comprises drawing steam cracked tar from a separation vessel, e.g., a primary fractionator or tar knock-out drum, cooling the tar, and returning it to the separation vessel to effect lower overall tar temperatures within the separation vessel, in order to reduce viscosity increasing condensation reactions. An apparatus for carrying out the method is also provided. | 04-22-2010 |
20100300936 | Method and Apparatus for Recycle of Knockout Drum Bottoms - A process and apparatus for cracking a hydrocarbon feed in a steam cracking furnace by withdrawing a resid-rich stream from a resid knockout vessel and recycling the resid-rich stream through a convection heating section of the furnace. | 12-02-2010 |
20110180456 | Integrated Process and System for Steam Cracking and Catalytic Hydrovisbreaking with Catalyst Recycle - This invention relates to a process for cracking hydrocarbon feedstock containing resid comprising:
| 07-28-2011 |
20120006722 | Integrated Vacuum Resid To Chemicals Conversion Process - A process and apparatus for cracking a hydrocarbon feed containing resid, comprising: heating a hydrocarbon feedstock containing resid; passing said heated hydrocarbon feedstock to a vapor/liquid separator; flashing said heated hydrocarbon feedstock in said vapor/liquid separator to form a vapor phase and a liquid phase containing said resid; passing at least a portion of said resid-containing liquid phase from said vapor/liquid separator to a thermal conversion reactor operating at 649° C. or more, wherein the thermal conversion reactor contains coke particles; and converting at least a portion of said resid into olefins. | 01-12-2012 |
20120006723 | Integrated Process For Steam Cracking - This invention relates to a process and system for cracking hydrocarbon feedstock containing vacuum resid comprising: (a) subjecting a vacuum resid to a first thermal conversion in a thermal conversion reactor (such as delayed coker, fluid coker, Flexicoker™, visbreaker and catalytic hydrovisbreaker) where at least 30 wt % of the vacuum resid is converted to material boiling below 1050° F. (566° C.); (b) introducing said thermally converted resid to a vapor/liquid separator, said separator being integrated into a steam cracking furnace, to form a vapor phase and liquid phase; (c) passing said vapor phase to the radiant furnace in said steam cracking furnace; and (d) recovering at least 30 wt % olefins from the material exiting the radiant furnace (based upon the weight of the total hydrocarbon material exiting the radiant furnace). | 01-12-2012 |
20120018278 | Method And Apparatus For Recycle Of Knockout Drum Bottoms - A process and apparatus for cracking a hydrocarbon feed in a steam cracking furnace by withdrawing a resid-rich stream from a resid knockout vessel and recycling the resid-rich stream through a convection heating section of the furnace. | 01-26-2012 |
20130116494 | Hydrocarbon Pyrolysis Process - Disclosed is a pyrolysis process that is capable of being with reduced coke and/or tar formation. The process can pyrolyze hydrocarbon feed that contains low- to mid-range levels of non-volatiles. Pyrolysis is carried out with a predetermined amount of the feed being in the liquid phase so as to minimize coke and/or tar formation in the pyrolysis reactor. The pyrolysis feed may also include a diluent, such as molecular hydrogen, that further acts to minimize coke and/or tar formation in the pyrolysis reactor. The amount of diluent in the pyrolysis feed can be adjusted to adjust or control dry point of the hydrocarbon in the pyrolysis feed. | 05-09-2013 |
20130156656 | Integrated Process For Steam Cracking - This invention relates to a process and system for cracking hydrocarbon feedstock containing vacuum resid comprising: (a) subjecting a vacuum resid to a first thermal conversion in a thermal conversion reactor (such as delayed coker, fluid coker, Flexicoker™, visbreaker and catalytic hydrovisbreaker) where at least 30 wt % of the vacuum resid is converted to material boiling below 1050° F. (566° C.); (b) introducing said thermally converted resid to a vapor/liquid separator, said separator being integrated into a steam cracking furnace, to form a vapor phase and liquid phase; (c) passing said vapor phase to the radiant furnace in said steam cracking furnace; and (d) recovering at least 30 wt % olefins from the material exiting the radiant furnace (based upon the weight of the total hydrocarbon material exiting the radiant furnace). | 06-20-2013 |