Patent application number | Description | Published |
20080312483 | Process for Producing Aromatic Hydrocarbon and Hydrogen - A process for producing aromatic hydrocarbons and hydrogen, in which a lower hydrocarbons-containing feedstock gas is reformed by being supplied to and being brought into contact with a catalyst under high temperature conditions thereby forming aromatic hydrocarbons and hydrogen. The method includes the steps of (a) supplying a hydrogen gas together with the feedstock gas during a supply of the feedstock gas; and (b) suspending the supply of the feedstock gas for a certain period of time while keeping a condition of a supply of the hydrogen gas. The catalyst is exemplified by a metallo-silicate carrying molybdenum and a metallo-silicate carrying molybdenum and rhodium. An amount of the hydrogen gas supplied together with the feedstock gas is set to be preferably larger than 2% and smaller than 10%, more preferably within a range of from 4 to 8%, much more preferably 8%. As a pretreatment for a reforming reaction by which aromatic hydrocarbons and hydrogen are formed, the catalyst is increased in temperature and kept at the temperature for a certain period of time while a gas containing methane and hydrogen is supplied thereto. | 12-18-2008 |
20090240093 | PROCESS FOR PRODUCTION OF AROMATIC COMPOUND - An aromatic compound, particularly benzene, is stably produced in the presence of a catalyst from a lower hydrocarbon having 2 or more carbon atoms, particularly from an ethane-containing gas composition such as ethane gas and natural gas. Disclosed is a process for producing an aromatic compound by reacting ethane or an ethane-containing raw gas in the presence of a catalyst. The catalyst may comprise molybdenum carried on metallosilicate such as H-type ZSM-5H or H-type MCM-22. In the reaction, the temperature is from 550 to 750° C., preferably not lower than 600° C. and not higher than 680° C. Additionally, the raw gas further contains methane and hydrogen is added thereto, thereby improving the production efficiency and stability. | 09-24-2009 |
20100016647 | CATALYST FOR AROMATIZATION OF LOWER HYDROCARBONS AND PROCESS FOR PRODUCTION OF AROMATIC COMPOUNDS - A catalyst for producing aromatic compounds from lower hydrocarbons while improving activity life stability of methane conversion rate; benzene formation rate; naphthalene formation rate; and total formation rate of benzene, toluene and xylene is formed by loading molybdenum and copper on metallo-silicate serving as a substrate and then calcining the metallo-silicate. When the catalyst is reacted with a reaction gas containing lower hydrocarbons and carbonic acid gas, aromatic compounds are produced. In order to obtain the catalyst, it is preferable that molybdenum and copper are loaded on zeolite formed of metallo-silicate after the zeolite is treated with a silane compound larger than a pore of the zeolite in diameter and having an amino group and a straight-chain hydrocarbon group, the amino group being able to selectively react with the zeolite at a Bronsted acid point of the zeolite. It is preferable that a loaded amount of molybdenum is within a range of from 2 to 12 wt. % based on total amount of the calcined catalyst while copper is loaded at a copper to molybdenum molar ratio of 0.01 to 0.8. | 01-21-2010 |
20100137125 | METHOD OF REGENERATING LOWER HYDROCARBON AROMATIZING CATALYST - To improve stability of catalytic performance, an aromatizing catalyst for converting lower hydrocarbons into aromatic compounds is regenerated. A regeneration process of the aromatizing catalyst according to the present invention includes the steps of: (a) reacting the aromatizing catalyst with a hydrogen gas in an atmosphere containing the hydrogen gas after using the aromatizing catalyst in an aromatizing reaction for converting lower hydrocarbons into aromatic compounds; (b) decreasing a temperature of the atmosphere containing the hydrogen gas reacted with the aromatizing catalyst, by supplying one of an inert gas and a reducing gas to the atmosphere; (c) reacting the aromatizing catalyst reacted with this inert gas, with an oxidizing gas; and (d) reacting the aromatizing catalyst reacted with the oxidizing gas, with a reducing gas. | 06-03-2010 |
20100137666 | CATALYST FOR AROMATIZATION OF LOWER HYDROCARBONS AND PROCESS FOR PRODUCTION OF AROMATIC COMPOUNDS - A catalyst for aromatizing a lower hydrocarbon, in order to increase the amount of production of useful aromatic compounds, such as benzene and toluene, by improving the methane conversion rate, the benzene formation rate, the naphthalene formation rate and the BTX formation rate (or a total formation rate of benzene, toluene and xylene) is such that molybdenum and silver are loaded on a metallosilicate as a substrate. It is more preferable to obtain the aromatizing catalyst by loading molybdenum and silver after modifying a zeolite formed of the metallosilicate with a silane compound that has a molecular diameter larger than a pore diameter of the zeolite and that has an amino group, which selectively reacts at a Bronsted acid point of the zeolite, and a straight-chain hydrocarbon group. | 06-03-2010 |
20110172089 | PROCESS FOR PRODUCING LOWER-HYDROCARBON AROMATIZATION CATALYST AND LOWER-HYDROCARBON AROMATIZATION CATALYST - [Task] To improve activity of a lower hydrocarbon aromatization catalyst and the catalyst stability. | 07-14-2011 |
20110172478 | CATALYST FOR AROMATIZATION OF LOWER HYDROCARBON, AND PROCESS FOR PRODUCTION OF AROMATIC COMPOUND - [Object] To improve the yield of aromatic hydrocarbon and the stability of active life in a process for producing aromatic compound by using a lower hydrocarbon aromatization catalyst. | 07-14-2011 |
20110288355 | METHOD FOR PRODUCING AROMATIC HYDROCARBON AND APPARATUS FOR PRODUCING AROMATIC HYDROCARBON - To economically regenerate a catalyst and to produce aromatic hydrocarbon stably for a long time maintaining a high aromatic hydrocarbon yield when the aromatic hydrocarbon is produced upon making a contact reaction between lower hydrocarbon and the catalyst. | 11-24-2011 |
20120022309 | METHOD FOR PRODUCING AROMATIC HYDROCARBON - [Object] To produce aromatic hydrocarbon stably for a long time maintaining a high aromatic hydrocarbon yield when the aromatic hydrocarbon is produced upon making a contact reaction between lower hydrocarbon and a catalyst. | 01-26-2012 |
Patent application number | Description | Published |
20090277304 | PROCESS FOR PRODUCTION OF FE BASED AMORPHOUS ALLOY - According to exemplary embodiments of the present invention, a process for production of an amorphous alloy can be provided at low cost by, e.g., efficiently removing magnetic-property-degrading Al and Ti when using inexpensive Fe—B or scrap as an amorphous alloy raw material. An exemplary embodiment of the process for production of an Fe-based amorphous alloy ribbon can comprise, by mass, e.g., 2 to 4% of B, 1 to 6% of Si, and a balance of Fe and unavoidable materials is provided. For example, it can be determined whether the molten alloy obtained by melting a main raw material has a Ti concentration or Al concentration of 0.005 mass % or greater: When such even occurs, iron oxide source having an iron content of 55 mass % or greater can be added thereto to reduce both Ti and Al to less than 0.005 mass % by oxidative removal. Alternatively, it is possible to determine whether the main raw material has a composition whose Ti concentration or Al concentration is 0.005 mass % or greater, and when it does, an iron oxide source having an iron content of 55 mass % or greater is precharged into a melting vessel together with the main raw material. | 11-12-2009 |
20130333518 | ENVIRONMENTALLY FRIENDLY FLUX FOR MOLTEN STEEL DESULFURIZATION - An environmentally friendly flux for molten steel desulfurization includes CaO and Al | 12-19-2013 |
20140313456 | LIQUID CRYSTAL DISPLAY DEVICE - A first polarizing plate is disposed on a first main surface of a liquid crystal display panel. A second polarizing plate is disposed on a second main surface of the liquid crystal panel. The first polarizing plate includes a first polarizer and a first phase difference film laminated on a main surface on the liquid crystal display panel side in the first polarizer. The second polarizing plate includes a second polarizer and a transparent film laminated on a main surface on the side opposite to the liquid crystal display panel in the second polarizer. | 10-23-2014 |
20150381458 | COMMUNICATION APPARATUS AND VEHICLE TRANSMISSION SYSTEM - A communication apparatus that forms, in a train in which fixed formations are coupled, a backbone network relaying signals between branch networks formed in the fixed formations with another communication apparatus that is made redundant, includes: a VRRP functional unit that, when operating as a master, periodically transmits an alive monitoring frame to another communication apparatus operating as a backup via the branch network, and, when operating as a backup, receives an alive monitoring frame transmitted from another communication apparatus operating as a master via the branch network; a port-malfunction detection unit detecting malfunction of the port to which the branch network is connected; and an alive determination unit that, when operating as a backup, detects whether another communication apparatus operating as a master has malfunctioned based on an alive-monitoring-frame reception result from the VRRP functional unit and a malfunction detection result from the port-malfunction detection unit. | 12-31-2015 |