Patent application number | Description | Published |
20150011378 | High Light Received Heavy Oil Catalytic Cracking Catalyst and Preparation Method Therefor - The present invention relates to a heavy oil catalytic cracking catalyst having a high yield of light oil and preparation methods thereof. The catalyst comprises 2 to 50% by weight of a magnesium-modified ultra-stable rare earth type Y molecular sieve, 0.5 to 30% by weight of one or more other molecular sieves, 0.5 to 70% by weight of clay, 1.0 to 65% by weight of high-temperature-resistant inorganic oxides, and 0.01 to 12.5% by weight of rare earth oxide. The magnesium-modified ultra-stable rare earth type Y molecular sieve is obtained by the following manner: the raw material, a NaY molecular sieve, is subjected to a rare earth exchange, a dispersing pre-exchange, a magnesium salt exchange modification, an ammonium salt exchange for sodium reduction, a second exchange and a second calcination. The catalyst provided in the present invention is characteristic in its high conversion capacity of heavy oil and a high yield of light oil. | 01-08-2015 |
20150080209 | Heavy Oil Catalytic Cracking Catalyst and Preparation Method Therefor - The present invention relates to a heavy oil catalytic cracking catalyst and preparation method thereof. The catalyst comprises 2 to 50% by weight of an ultra-stable rare earth type Y molecular sieve, 0.5 to 30% by weight of one or more other molecular sieves, 0.5 to 70% by weight of clay, 1.0 to 65% by weight of high-temperature-resistant inorganic oxides, and 0.01 to 12.5% by weight of rare earth oxide. The ultra-stable rare earth type Y molecular sieve is obtained as follows: the raw material, NaY molecular sieve, is subjected to a rare earth exchange and a dispersing pre-exchange, and the molecular sieve slurry is filtered, washed and subjected to a first calcination to produce a “one-exchange one-calcination” rare earth sodium Y molecular sieve, wherein the order of the rare earth exchange and the dispersing pre-exchange is not limited; and the “one-exchange one-calcination” rare earth sodium Y molecular sieve is further subjected to ammonium salt exchange for sodium reduction and a second calcination. The catalyst provided in the present invention is characteristic in its high heavy-oil-conversion capacity, a high total liquid yield and a high light oil yield. | 03-19-2015 |
20150151284 | ULTRA-STABLE RARE EARTH Y-TYPE MOLECULAR SIEVE AND PREPARATION METHOD THEREFOR - The present invention provides an ultra-stable rare earth type Y molecular sieve and the preparation method thereof, which method is carried out by subjecting a NaY molecular sieve as the raw material to a rare earth exchange and a dispersing pre-exchange, then to an ultra-stabilization calcination treatment. The molecular sieve comprises 1 to 20% by weight of rare earth oxide, not more than 1.2% by weight of sodium oxide, has a crystallinity of 51 to 69%, and a lattice parameter of 2.451 nm to 2.469 nm. In contrast to the prior art, in the molecular sieve prepared by this method, rare earth ions are located in sodalite cages, which is demonstrated by the fact that no rare earth ion is lost during the reverse exchange process. Moreover, the molecular sieve prepared by such a method has a molecular particle size D(v,0.5) of not more than 3.0 μm and a D(v,0.9) of not more than 20 μm. Cracking catalysts using the molecular sieve as an active component is characterized by a high heavy-oil-conversion capacity and a high yield of valuable target products. | 06-04-2015 |
20150175432 | MAGNESIUM MODIFIED ULTRA-STABLE RARE EARTH Y-TYPE MOLECULAR SIEVE AND PREPARATION METHOD THEREFOR - The present invention provides a magnesium-modified ultra-stable rare earth type Y molecular sieve and the preparation method thereof, which method is carried out by subjecting a NaY molecular sieve as the raw material to a rare earth exchange and a dispersing pre-exchange, then to an ultra-stabilization calcination treatment, and finally to a magnesium modification. The molecular sieve comprises 0.2 to 5% by weight of magnesium oxide, 1 to 20% by weight of rare earth oxide, and not more than 1.2% by weight of sodium oxide, and has a crystallinity of 46 to 63%, and a lattice parameter of 2.454 nm to 2.471 nm. In contrast to the prior art, in the molecular sieve prepared by this method, rare earth ions are located in sodalite cages, which is demonstrated by the fact that no rare earth ion is lost during the reverse exchange process. Moreover, the molecular sieve prepared by such a method has a molecular particle size D(v,0.5) of not more than 3.0 μm and a D(v,0.9) of not more than 20 μm. Such a molecular sieve has both high stability and high selectivity for the target product, while cracking catalysts using the molecular sieve as an active component is characterized by a high heavy-oil-conversion capacity and a high yield of valuable target products. | 06-25-2015 |
20150209767 | PHOSPHORUS-CONTAINING ULTRASTABLE Y-TYPE RARE EARTH MOLECULAR SIEVE AND PREPARATION METHOD THEREFOR - Provided is a phosphorus-containing ultrastable Y-type rare earth (RE) molecular sieve and the preparation method thereof. The method is: based on Na Y molecular sieve as a raw material, obtaining “one-exchange one-roast” RE-Na Y-type molecular sieve through the steps of exchanging with RE, pre-exchanging with dispersing, and the first calcination; and then performing ammonium salt exchange, phosphorus modification, and the second calcination on the “one-exchange one-roast” RE-Na Y-type molecular sieve, wherein the sequence of the RE exchange and the pre-exchange with dispersing is unlimited, and the sequence of the ammonium salt exchange and the phosphorus modification is unlimited as well. The obtained molecular sieve contains RE oxide 1-20 wt %, phosphorus 0.1-5 wt %, and sodium oxide no more than 1.2 wt %, and has a crystallization degree of 51-69% and a lattice parameter of 2.449-2.469 nm. Heavy oil conversion rate can be increased by using the molecular sieve as an active component in a catalytic cracking catalyst. | 07-30-2015 |
Patent application number | Description | Published |
20140006558 | METHOD AND DEVICE FOR RESUMING FILE DOWNLOAD | 01-02-2014 |
20140007126 | METHOD AND DEVICE FOR ALLOCATING BROWSER PROCESS | 01-02-2014 |
20140244812 | METHOD, SYSTEM AND PROGRAM FOR BROWSER TO SWITCH IE CORE - The present invention discloses a method, a system and a program for a browser to switch an IE Kernel which may be able to solve the problems of compatibility and adaptability of the browser kernel. The method comprises: generating a first IE kernel file and a second IE kernel file, and import them into a browser client; the browser process determining a currently adapted IE kernel version according to Uniform Resource Locator (URL) information submitted by a user; if the currently adapted IE kernel version is the first IE kernel, the browser process being redirected to a corresponding location to load the first IE kernel file; if the currently adapted IE kernel version is the second IE kernel, the browser process being redirected to a corresponding location to load the second IE kernel file. | 08-28-2014 |
20140310807 | Cloud-based secure download method - The invention provides a cloud-based secure download method. A download terminal carries out an information interaction with a cloud security server via the Internet, comprising the following steps of: acquiring, by the download terminal, a URL address of a file to be downloaded by a user; comparing the URL address of the file to be downloaded with a malicious URL list in the cloud security server; and prompting a comparison result to the user by the download terminal. | 10-16-2014 |
Patent application number | Description | Published |
20090310559 | Seamless Handover of a Mobile Station from a Macro Base Station to a Privately Accessible Femto Base Station - In an embodiment, a method is provided that includes receiving a handover request for a mobile station to be handed over to a macro base station. Identification information for the mobile station is received. The identification of the mobile station is compared with stored association information that includes identification information of a femto base station, and identification information for a particular mobile station. The method further includes identifying that the mobile station identification information matches the identification information for an associated mobile station using the stored association information. The information regarding the associated femto base station is transmitted to the associated mobile station. | 12-17-2009 |
20090310568 | Seamless Handover and Load Balance Between Macro Base Stations and Publicly Accessible Femto Base Stations - The teachings of the present disclosure relate to seamless handover between macro base stations and publicly accessible femto base stations that includes scheduling a null period in a femto base station's communications activity. The method also includes monitoring mobile station activity during the null period at the femto base station. A candidate mobile station is identified based on the monitoring. An identifier of the candidate mobile station is transmitted from the femto base station to a macro base station. The identifier may be used to initiate handover of service of the candidate mobile station from the macro base station to the femto base station. | 12-17-2009 |
20090312019 | Mobile Station Assisted Seamless Handover to a Femto Base Station - According to an embodiment, a method is provided. The method includes identifying a femto base station of a wireless network as the home femto base station for a mobile station served by the wireless network. The connection parameters for the home femto base station may be stored at the mobile station. A home macro base station may be identified and associated with the home femto base station. Identification information for the home macro base station may be stored at the mobile station. Association information of the home femto base station with the home macro base station may be stored at the mobile station. | 12-17-2009 |
20090312024 | Seamless Handover Between Macro Base Stations and Publicly Accessible Femto Base Stations - The teachings of the present disclosure relate to seamless handover between macro base stations and publicly accessible femto base stations that includes determining the location of each of a plurality of femto base stations in the coverage area of a macro base station. A plurality of groups according to the locations of the particular femto base stations are created. The groups are a subset of the plurality of femto base stations. Finally, identification information for one or more of the groups of femto base stations is transmitted to a mobile station in the coverage area of the macro base station. | 12-17-2009 |