Patents Assigned to RIPI
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Patent number: 9878319Abstract: A dispersing-type nanocatalyst for catalytic hydrocracking of heavy oil, a method for preparing the same, and the use thereof in catalytic hydrocracking of heavy oil. The present invention is also directed to reducing the operational temperature of catalytic hydrocracking of heavy crude oil, and also increasing the yield of the process by utilizing a lower concentration of said nanocatalyst.Type: GrantFiled: November 10, 2014Date of Patent: January 30, 2018Assignee: RESEARCH INSTITUTE OF PETROLEUM INDUSTRY (RIPI)Inventors: Mahshad Alaei, Alimorad Rashidi, Alireza Mahjoub, Mohsen Ghanami, Amir Hossein Bornaee
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Patent number: 9206050Abstract: The present invention relates to a continuous process for producing carbon nanotubes (herein after also referred to as “CNTS”) of single, double and/or multi-wall type, with any possible desired diameter and with high purity. The preferred embodiment provides means for continuous supply of a catalyst during the process for producing the carbon nanotubes, according to which one can achieve the advantageous continuity of the process.Type: GrantFiled: March 20, 2007Date of Patent: December 8, 2015Assignee: RESEARCH INSTITUTE OF PETROLEUM INDUSTRY (RIPI)Inventors: Alimorad Rashidi, Bahman Amini Horri, Ali Mohajeri, Sasan Sadraei, Khairolah Jafari Jozani, Ali Nakhaeipor
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Publication number: 20150144037Abstract: The present invention is related to the synthesis of a nano-hybrid catalyst made of carbon nanotubes and metal ferrite materials for the removal of NOx compounds, which are emitted from stationary sources, through an ammonia selective catalytic reduction process. Weight ratios of carbon nanotube (x) to metal ferrite (y) is preferably about (x/y) 0.1 to 10. The present invention is also directed to the synthesis of a nano-hybrid catalyst to improve the efficiency of the conventional NOx reduction process at lower reaction temperatures. By use of the preferred nano-hybrid catalyst, it is possible to locate a selective catalytic reduction (SCR) unit capable of operating at lower temperatures, e.g., below 260° C., and from about 50° C. to about 250° C., after the desulfurizer and the particle removal equipment. With the exhaust gas cleaner, the lifetime of the catalyst can be increased. This nano-hybrid catalyst provides higher NOx removal efficiencies at low temperatures, typically from about 50° C.Type: ApplicationFiled: September 18, 2014Publication date: May 28, 2015Applicants: Research Institute of Petroleum Industry (RIPI), Tarbiat Modaress UniversityInventors: Mahnaz Pourkhalil, Alimorad Rashidi, Abdolsammad Zarringhalam Moghaddam, Mahdi Mohajeri, Ali Mehri
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Publication number: 20150129463Abstract: A dispersing-type nanocatalyst for catalytic hydrocracking of heavy oil, a method for preparing the same, and the use thereof in catalytic hydrocracking of heavy oil. The present invention is also directed to reducing the operational temperature of catalytic hydrocracking of heavy crude oil, and also increasing the yield of the process by utilizing a lower concentration of said nanocatalyst.Type: ApplicationFiled: November 10, 2014Publication date: May 14, 2015Applicant: Research Institute of Petroleum Industry (RIPI)Inventors: Mahshad Alaei, Alimorad Rashidi, Alireza Mahjoub, Mohsen Ghanami, Amir Hossein Bornaee
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Patent number: 9006130Abstract: The invention relates to a hydrodesulfurization nanocatalyst, use of the hydrodesulfurization nanocatalyst in a hydrodesulfurization process and a process for producing the hydrodesulfurization nanocatalyst. The hydrodesulfurization nanocatalyst can include a nanostructured alumina material, at least one metal selected from group VI B of the periodic table of elements, and at least one metal selected from group VIII B of the periodic table of elements.Type: GrantFiled: October 4, 2011Date of Patent: April 14, 2015Assignee: Research Institute of Petroleum Industry (RIPI)Inventors: Fereshteh Rashidi, Alimorad Rashidi, Kheirollah Jafari Jozani, Ali Nemati Kharat Ghaziani, Morteza Rezapour, Hamidreza Bozorgzadeh
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Patent number: 8834624Abstract: Light to ultra-light cement compositions with modified rheological properties. The cement composition includes cement, hydrophobic nano-silica, at least one additive and a sufficient amount of water to make a cement slurry with high compressive strength, low porosity, low free water, and low fluid loss with a quick thickening time.Type: GrantFiled: January 26, 2011Date of Patent: September 16, 2014Assignee: RIPIInventors: Hamid Soltanian, Ali Reza Mortazavi, Mohammad Javad Modjtahedi, Mahmoud Reza Badamaki, Ali Mesbah, Ali Reza Khoshniyat, Mohammad Reza Kamali
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Publication number: 20140030171Abstract: The invention related to a nano-structured catalyst system for removing mercaptans and/or H2S from hydrocarbonous gas mixtures and an apparatus for removing mercaptans and H2S from gas streams utilizing the catalyst system.Type: ApplicationFiled: July 27, 2012Publication date: January 30, 2014Applicant: RIPIInventors: Ali Mohamadalizadeh, Alimorad Rashidi, Jafar Towfighi, Ali Mohajeri, Morteza Rezapour, Kheirollah Jafarijozani, Mehdi Vahidi
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Patent number: 8628743Abstract: Gas sweetening solutions are described that are capable of removing hydrogen sulfide from gas streams. These gas sweetening solutions increase the size of produced sulfur particles and thereby improve efficiency of their separation, while simultaneously reducing corrosive effects of the sweetening solutions. The gas sweetening solutions comprise at least one chelating agent, cationic iron and a mixture of nitrite salt and phosphate species.Type: GrantFiled: March 17, 2009Date of Patent: January 14, 2014Assignee: Research Institute of Petroleum Industry (RIPI)Inventors: Masih Hosseini Jenab, Jaber Neshati, Khaled Forsat
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Patent number: 8350095Abstract: Provided is a process for the production of dimethyl ether. The process improves the effectiveness of the production of dimethyl ether. Especially, the process can be combined with processes for the production of methanol.Type: GrantFiled: August 6, 2008Date of Patent: January 8, 2013Assignee: RIPIInventors: Hossein Manafi Varkiani, Kambiz Zadeh Sadaghiani, Hamid Reza Bakhtyari, Hamid Reza Godini, Laleh Shirazi, Akbar Zamaniyan, Mahmoud Khakpour
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Patent number: 8247488Abstract: The invention relates to a salt resistant water absorbing compound including a polymeric phase that includes polyacrylamide and at least one of di or poly saccharide, wherein the polyacrylamide is cross-linked in the presence of at least one of di or poly saccharide by a cross-linking agent including multivalent cations, complexes thereof, organic cross-linking agents, or any combination thereof.Type: GrantFiled: October 21, 2010Date of Patent: August 21, 2012Assignee: RIPIInventors: Jamal Aalaie Haradasht, Ebrahim Vasheghani Farahani, Ali Rahmatpour
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Publication number: 20120083643Abstract: The invention relates to a hydrodesulfurization nanocatalyst, use of the hydrodesulfurization nanocatalyst in a hydrodesulfurization process and a process for producing the hydrodesulfurization nanocatalyst. The hydrodesulfurization nanocatalyst can include a nanostructured alumina material, at least one metal selected from group VI B of the periodic table of elements, and at least one metal selected from group VIII B of the periodic table of elements.Type: ApplicationFiled: October 4, 2011Publication date: April 5, 2012Applicant: RESEARCH INSTITUTE OF PETROLEUM INDUSTRY (RIPI)Inventors: Fereshteh Rashidi, Alimorad Rashidi, Kheirollah Jafari Jozani, Ali Nemati Kharat Ghaziani, Morteza Rezapour, Hamidreza Bozorgzadeh
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Publication number: 20110168018Abstract: The invention relates to a hybrid nano sorbent that is capable of reducing and/or removing acidic gases in a gas stream. The hybrid nano sorbent includes at least (i) a nano-structured carbonous material including at least one organic functional group, (ii) at least one metal from at least one of groups 2A, 6B, 7B, 9B or 10B of the periodic table of elements, or (iii) a combination of (i) and (ii). The method for reducing and/or removing the acidic gases in a stream is also described.Type: ApplicationFiled: January 14, 2010Publication date: July 14, 2011Applicant: RESEARCH INSTITUTE OF PETROLEUM INDUSTRY (RIPI)Inventors: Ali Mohamadalizadeh, Alimorad Rashidi, Jafar Towfighi Darian, Ali Mohajeri, Sorena Sattari, Mehrdad Manteghian
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Patent number: 7947857Abstract: Provided are compositions and methods for increasing the stability and gas content of gas hydrates.Type: GrantFiled: August 28, 2008Date of Patent: May 24, 2011Assignee: Research Institute of Petroleum Industry (RIPI)Inventors: Khodadad Nazari, Hosein Rahimi, Ramin Khodafarin, Mohammad Kameli, Hosein Brijanian
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Patent number: 7902113Abstract: The present invention relates to an improved catalyst for direct conversion of methane to ethane and ethylene, a method for producing the catalyst and a process making use of the catalyst.Type: GrantFiled: September 6, 2005Date of Patent: March 8, 2011Assignee: Research Institute of Petroleum Industry (RIPI)Inventors: Saeed Zarrinpashne, Reza Ahmadi, Seyyed Madjid Zekordi
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Publication number: 20100167915Abstract: A nano-supported hydrodesulphurization (HDS) catalyst is prepared for hydrodesulphurization of hydrocarbonaceous feed stock. The catalyst can be prepared through different methods and also used under milder conditions than those required for conventionally used HDS catalysts, but can also function under other hydrodesulphurization operating conditions.Type: ApplicationFiled: December 2, 2009Publication date: July 1, 2010Applicant: RESEARCH INSTITUTE OF PETROLEUM INDUSTRY (RIPI)Inventors: Ali Mohajeri, Alimorad Rashidi, Kheirollah Jafari Jozani, Payman Khorami, Bahman Amini, Dorsa Parviz, Mansour Kalbasi
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Patent number: 7704911Abstract: The present invention provides a catalytic composition for use in an oxidation-reduction process for effecting the catalytic oxidation of hydrogen sulfide in gas strains comprising a water soluble iron compound, a mixture of two chelating agents, comprising Na2EDTA and Na4EDTA, and at least one stabilizer.Type: GrantFiled: November 10, 2005Date of Patent: April 27, 2010Assignee: Research Institute of Petroleum Industry (RIPI)Inventor: Masih Hosseini Jenab
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Patent number: 7691352Abstract: A new set of additives to be sued in the preparation of inorganic materials; especially of perovskite nature is proposed. The chemical compositions of the perovskites prepared in the presence of the mentioned additives are found to be more homogenous, leading to better catalytic behavior, including higher selectivity and yields as compared to catalysts of identical formulations prepared through the conventional method of using EDTA/citrate (or other organic additive) method.Type: GrantFiled: April 2, 2009Date of Patent: April 6, 2010Assignee: Research Institute of Petroleum Industry (RIPI)Inventors: Khodadad Nazari, Zahra Taheri, Naser Seyed Matin, Reza Ahmadi, Saeed Zarrinpashneh, Morteza Rezapour
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Publication number: 20090246106Abstract: Gas sweetening solutions are described that are capable of removing hydrogen sulfide from gas streams. These gas sweetening solutions increase the size of produced sulfur particles and thereby improve efficiency of their separation, while simultaneously reducing corrosive effects of the sweetening solutions. The gas sweetening solutions comprise at least one chelating agent, cationic iron and a mixture of nitrite salt and phosphate species.Type: ApplicationFiled: March 17, 2009Publication date: October 1, 2009Applicant: RESEARCH INSTITUTE OF PETROLEUM INDUSTRY (RIPI)Inventors: Masih HOSSEINI JENAB, Jaber NESHATI, Khaled FORSAT
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Patent number: 7585406Abstract: A Process for hydroconverting of a heavy hydrocarbonaceous feedstock comprising a catalyst to produce lower boiling hydrocarbon products. The method can be used for the high- boiling point residues of oil refining (asphaltene, the residues of vacuum and under pressure distillation of oil, and the useless and heavy materials of thermo catalytic processes), heavy oil, natural bitumen, and bitumen-containing sands. It can also be used in oil refinery industries for the production of gas, gasoline fractions, distillation gas oil, concentrate of ash containing metals and chemical fertilizers.Type: GrantFiled: August 16, 2006Date of Patent: September 8, 2009Assignees: Research Institute of Petroleum Industry (RIPI), NTI CompanyInventors: Salambek Naibovich Khadzhiev, Khusain Magamedovich Kadiev, Vahid Khumaidovich Mezhidov, Jamshid Zarkesh, Reza Hashemi, Seyed Kamal Masoudian Targhi
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Publication number: 20090062579Abstract: Provided are compositions and methods for increasing the stability and gas content of gas hydrates.Type: ApplicationFiled: August 28, 2008Publication date: March 5, 2009Applicant: Research Institute of Petroleum Industry (RIPI)Inventors: Khodadad Nazari, Hosein Rahimi, Ramin Khodafarin, Mohammad Kameli, Hosein Brijanian