Patent application number | Description | Published |
20090288985 | Process for producing light olefins and aromatics - A process for producing light olefins and aromatics, which comprises reacting a feedstock with a catalytic cracking catalyst in at least two reaction zones, wherein the reaction temperature of at least one reaction zone downstream of the first reaction zone is higher than that of the first reaction zone and its weight hourly space velocity is lower than that of the first reaction zone. The spent catalyst is separated from the reaction product vapor, regenerated and then returned to the reactor. The reaction product vapor is separated to obtain the desired products, light olefins and aromatics. This process efficiently produces light olefins such as propylene, ethylene, etc. from heavy feedstocks, wherein the yield of propylene exceeds 20% by weight, and produces aromatics such as toluene, xylene, etc. at the same time. | 11-26-2009 |
20100067538 | METHOD AND SYSTEM FOR FRAME CLASSIFICATION - The present invention provides a method and a device for classifying data frames. The method is typically carried out by a communication device in a wireless network with quality of service capability. It comprises the step of comparing data in a frame to data in a plurality of classifier entries, wherein the order of comparison of the classifier entries with a frame is a function of a quality of service priority level, and the step of classifying a frame for which a match is found as a function of a parameter associated with the matching classifier entry. | 03-18-2010 |
20100135167 | METHOD AND APPARATUS FOR MEDIA ACCESS IN CONTENTION-BASED NETWORKS - A method and apparatus are described for gaining access to a communication medium in a contention-based network, including determining a slot count based on a number of stations in the contention-based network, adjusting the slot count, initiating a frame transmission when the slot count reaches a predetermined value and wherein said number of stations and an address queue are adjusted to reflect a priority. Further, a method and apparatus are described for gaining access to a communication medium in a contention-based network, including receiving a slot count based on a number of stations in the contention-based network, adjusting the slot count, initiating a frame transmission when the slot count reaches a predetermined value and wherein said number of stations and an address queue are adjusted to reflect a priority. | 06-03-2010 |
20100135319 | METHOD AND APPARATUS FOR MEDIA ACCESS IN CONTENTION-BASED NETWORKS - A method and apparatus are described for gaining access to a communication medium in a contention-based network, including determining a slot count based on a number of stations in the contention-based network, adjusting the slot count, initiating a frame transmission when the slot count reaches a predetermined value and wherein said number of stations and an address queue are adjusted to reflect one of a priority and traffic patterns. Further, a method and apparatus are described for gaining access to a communication medium in a contention-based network, including receiving a slot count based on a number of stations in the contention-based network, adjusting the slot count, initiating a frame transmission when the slot count reaches a predetermined value and wherein said number of stations and an address queue are adjusted to reflect a priority. | 06-03-2010 |
20100198910 | ENHANCED METHOD AND APPARATUS FOR REDUCING CONGESTION IN DHCP NETWORK SYSTEM - An enhanced method and apparatus for reducing congestion in dynamic host configuration protocol network system are provided. The congestion reduction method comprises steps of receiving a DHCP request from a DHCP client; and stopping responding to a certain number of DHCPDISCOVER message. And the dynamic host configuration protocol server comprises at least one distributed server, at which the contents of the network service provider server are backed up. | 08-05-2010 |
20100213102 | CATALYTIC CONVERSION PROCESS - A catalytic conversion process which comprises catalytic cracking reaction of a hydrocarbon feedstock contacting with a medium pore size zeolite enriched catalyst in a reactor, characterized in that reaction temperature, weight hourly space velocity and catalyst/feedstock ratio by weight are sufficient to achieve a yield of fluid catalytic cracking gas oil between 12% and 60% by weight of said feedstock, wherein said weight hourly space velocity is between 25 h | 08-26-2010 |
20100248942 | CATALYST REGENERATION PROCESS FOR IMPROVING CATALYST SELECTIVITY - The object of the present invention is to provide a catalyst regeneration process which can improve catalyst selectivity. A first aspect of the invention is characterized in that a spent catalyst from a reactor is introduced into a first fluidized bed regenerator and contacted with an oxygen-containing gas stream and optional steam to carry out a coke combustion reaction, wherein the resultant mixture of the partially regenerated catalyst and flue gas is introduced into a second fluidized bed regenerator and contacted with steam and an optional oxygen-containing gas stream to carry out a further regeneration reaction, and then the regenerated catalyst is introduced into the reactor. A second aspect of the invention is characterized in that a spent catalyst from a reactor is introduced into a fluidized dense bed regenerator and contacted with an oxygen-containing gas stream and steam to carry out a coke combustion reaction, and then the regenerated catalyst is introduced into the reactor. The inventive processes result in a more uniform distribution of the regenerated catalyst activity; due to the exposure of the catalyst to a low temperature for a long time, a part of the heavy metals are buried by the matrix and the remaining are passivated. Thereby dry gas and coke yields decrease sharply when hydrocarbons are subjected to a catalytic cracking reaction on the regenerated catalyst. | 09-30-2010 |
20110000818 | PROCESS FOR CONVERTING INFERIOR FEEDSTOCK TO HIGH QUALITY FUEL OIL - A catalytic conversion process can convert inferior feedstock to high quality fuel oil and propylene. A inferior feedstock is introduced into first and second reactor zone, wherein the feedstock carry out first step and second step reactions by contacting with catalytic conversion catalyst. Product vapors separate from spent catalyst by gas-solid separation. The spent catalyst is stripped, regenerated by burning off coke and then returns to reactor. The product vapors are introduced into separation system to obtain propylene, gasoline, diesel, fluid catalytic cracking gas oil (FGO) and other products. The FGO is introduced into hydrotreating unit and/or extraction unit to obtain hydrotreated FGO and/or extracted FGO. Said hyrotreated FGO and/or extracted FGO return to the first reactor zone and/or another catalytic cracking unit to obtain propylene and gasoline. The extracted oil of said FGO is rich in double ring aromatics which are good chemical materials. The raffinate of said FGO is rich in chain alkane and cycloalkane which are suitable for catalytic cracking. More particularly, the invention relates to a process to utilize petroleum oil resources efficiently for decreasing the yield of dry gas and coke significantly. | 01-06-2011 |
20110073523 | CATALYTIC CONVERSION PROCESS FOR PRODUCING MORE DIESEL AND PROPYLENE - The present invention relates to a catalytic conversion process for producing more diesel and propylene, comprising contacting the feedstock oil with a catalyst having a relatively homogeneous activity in a reactor, wherein the reaction temperature, weight hourly space velocity and weight ratio of the catalyst/feedstock oil are sufficient to obtain a reaction product containing from 12 to 60% by weight of a fluid catalytic cracking gas oil relative to the weight of the feedstock oil; the fluid catalytic cracking gas oil is fed into the fluid catalytic cracking gas oil treatment device for further processing. Catalytic cracking, hydrogenation, solvent extraction, hydrocracking and process for producing more diesel are organically combined together, and hydrocarbons such as alkanes, alkyl side chains in the feedstocks for catalysis are selectively cracked and isomerized. Meanwhile, aromatics in the feedstocks, which enter into the diesel fraction, are minimized, and the retention of other components in the diesel fraction by the production of aromatics via the reaction such as aromatization and the like is avoided. While the feedstocks are converted into high cetane number diesel and propylene, the yields of dry gas and coke are significantly reduced, and the breaking tendency and consumption of the catalyst are decreased. | 03-31-2011 |
20110170559 | METHOD TO IMPROVE CHANNEL UTILIZATION IN A TIME DIVISION MULTIPLE ACCESS BASED PROTOCOL - A method and apparatus are described including receiving a report from an associated station, updating a list responsive to the report, adjusting a timeslot allocation map responsive to the updated list, encapsulating the adjusted map, transmitting the encapsulated adjusted map and assigning a timeslot specified in the timeslot allocation map to the associated station. Also described are a method and apparatus including receiving a synchronization frame over a communications channel, decapsulating a map located in the synchronization frame, determining if there is a timeslot specified in the map for which this associated station is one of an assigned main owner and an assigned backup owner, transmitting data over the communications channel during the timeslot for which this associated station is the assigned main owner, sensing the communications channel for a time interval and transmitting data over the communications channel that is idle for the time interval during the timeslot for which this associated station is the assigned backup owner. | 07-14-2011 |
20130326576 | METHOD AND DEVICE FOR VIEW SWITCHING - It is provided a method for view switching between a first device and a second device. The first device and the second device are used to display respectively a first multimedia content and a second multimedia content that are correlated, it comprises the steps of receiving and displaying, by the first device, data of the first multimedia content; in response to a view switching instruction, sending data of the first multimedia content to the second device and receiving data of the second multimedia content from the second device; and displaying the received data of the second multimedia content. | 12-05-2013 |
20140117993 | TEST METHOD AND TEST APPARATUS FOR TRANSPARENT DISPLAY DEVICE - Embodiments of the invention provide a test method and a test apparatus for a transparent display device. The test apparatus for the transparent display device comprises: an optical measuring device disposed on one side of the transparent display device to be tested, and a reference object disposed on the other side of the transparent display device to be tested. A brightness of the transparent display device to be tested is adjustable, and the optical measuring device measures a display effect of the reference object through the transparent display device to be tested which is set to different brightness. | 05-01-2014 |
20140245339 | SYSTEM AND METHOD FOR AUTOMATIC CONTENT PROGRAM DISCOVERY - A system for program information discovery is described. A method and a device for generating and inserting a watermark for such program information discovery into a program signal to be rendered are disclosed, along with the corresponding method and device for watermark detection and decoding from the rendered program signals. Watermark, which carries channel/program information, is encoded and embedded at the set top box where the program streams are received and decoded for rendering. Second screen devices are employed for watermark detection and decoding by capturing the render program signals which has the watermark embedded. The extracted watermark information may be sent to information servers for more detailed channel/program information. | 08-28-2014 |
20140275673 | Process for producing light olefins and aromatics - A process for producing light olefins and aromatics, which comprises reacting a feedstock by contacting with a catalytic cracking catalyst in at least two reaction zones, wherein the reaction temperature of at least one reaction zone among the reaction zones downstream of the first reaction zone is higher than that of the first reaction zone and its weight hourly space velocity is lower than that of the first reaction zone, separating the spent catalyst from the reaction product vapor, regenerating the separated spent catalyst and returning the regenerated catalyst to the reactor, and separating the reaction product vapor to obtain the desired products, light olefins and aromatics. This process produces maximum light olefins such as propylene, ethylene, etc from heavy feedstocks, wherein the yield of propylene exceeds 20% by weight, and produces aromatics such as toluene, xylene, etc at the same time. | 09-18-2014 |
20140293865 | DYNAMIC EVACUATION INFORMATION DELIVERY TO MOBILE DEVICES - A method for delivering dynamically updated evacuation information to mobile communication devices ( | 10-02-2014 |
20150019223 | METHOD AND DEVICE FOR PRESENTING CONTENT - It is provided a method for triggering an action on a second device. It comprises the steps of obtaining audio of a multimedia content presented on a first device; comparing the obtained audio with reference audio data in a database; if finding the obtained audio exists in the database containing reference audio, determining an action corresponding to the matched reference audio; and triggering the action in the second device. | 01-15-2015 |