Patents Assigned to Research Institute Petroleum Industry (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: 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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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
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Publication number: 20090048468Abstract: 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: ApplicationFiled: August 6, 2008Publication date: February 19, 2009Applicant: Research Institute of Petroleum Industry (RIPI)Inventors: Hossein Manafi Varkiani, Kambiz Zadeh Sadaghiani, Hamid Reza Bakhtyrai, Hamid Reza Godini, Laleh Shirazi, Akbar Zamaniyan, Mahmoud Khakpour
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Patent number: 7491750Abstract: An improved Method for the separation of catalyst particles and the wax product from the output slurry of a Fischer-Tropsch bubble column reactor comprising the contact of a hydrocarbon solvent from a cyclic solvent stream with the slurry, wherein the solvent is a hydrocarbon fraction which is pressurized and heated to its supercritical state and the temperature and the pressure of the solvent at the supercritical state are similar to those of the F-T reactor. After the separating of the catalyst from the hydrocarbon mixture of the solvent and the slurry in a catalyst separation section the hydrocarbon solvent and the wax product are separated, whereby the recovered solvent phase is lead to the cyclic solvent stream; which is used after re-pressurizing and re-heating in a supercritical solvent supply module to recycling the hydrocarbon solvent for the contact step. A system for carrying out the method is also disclosed.Type: GrantFiled: August 16, 2006Date of Patent: February 17, 2009Assignee: Research Institute of Petroleum Industry (RIPI)Inventors: Hamid Reza Khakdaman, Bahman Amini Horri, Hossein Manafi Varkiani, Sasan Sadraei Noori, Khairolah Jafari Jozani
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Patent number: 7419652Abstract: The invention relates to a process for removing hydrogen sulfide and recovering sulfur from a gas stream, comprising the steps of: contacting said gas stream with an aqueous catalyst solution of a polyvalent metal redox catalyst in a contacting zone to absorb said hydrogen sulfide and form a reduced catalyst solution comprising reduced polyvalent metal redox catalyst and sulfur particles; oxidizing said reduced catalyst solution while removing sulfur particles to form said oxidized aqueous catalyst solution comprising polyvalent metal redox catalyst in an oxidized state with sulfur particles removed; and recovering sulfur by transferring at least one of said sulfur particles and foam to a separation zone; wherein a coagulating reagent is added to a feed of said separation zone prior to entering said separation zone to promote settlement of sulfur particles.Type: GrantFiled: April 20, 2007Date of Patent: September 2, 2008Assignee: Research Institute of Petroleum Industry (RIPI)Inventors: Mohammad Reza Khattaty, Khaled Forsat, Reza Hashemi, Manafi Varkiani Hossein
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Patent number: 7226954Abstract: The invention relates to an integrated process for producing liquid fuels, the process comprising the steps of: a) subjecting syngas with a hydrogen/carbon monoxide ratio between about 0.5 to 2.0 to Fischer-Tropsch reaction conditions in the presence of a first catalyst; b) optionally removing water and/or heavy hydrocarbons from the product stream; and c) subjecting the product from step a) or b) together with syngas of a hydrogen/carbon monoxide ratio higher than that of step a) or hydrogen to Fischer-Tropsch reaction conditions at higher temperatures than during step a) in the presence of a second catalyst, said second catalyst being selected such as to provide a higher activity than said first catalyst; wherein said first catalyst is selected such as to provide low methane selectivity and high olefins and heavy hydrocarbons selectivity. According to the invention, a third synthesis step or additional synthesis steps is added subsequent to the synthesis step c).Type: GrantFiled: October 3, 2005Date of Patent: June 5, 2007Assignee: Research Institute Petroleum Industry (RIPI)Inventors: Ahmad Tavasoli, Ali Karimi, Kambiz Sadagiani Zadeh, Abas Ali Kodadadi, Yadollah Mortazavi, Shahram Sharifnia