Patents by Inventor Viorel D. Duma
Viorel D. Duma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10589254Abstract: Spheroidal catalyst support, supported catalyst, and method of preparing and using the catalyst for hydrodemetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise titania alumina having 5 wt % or less titania and have greater than 30% percent of their pore volume in pores having a diameter of between 200 and 500 ?. Catalysts prepared from the supports contain Group 6, 9 and 10 metals or metal compounds supported on the titania alumina supports. Catalysts in accordance with the invention exhibit improved catalytic activity and stability to remove metals from heavy feedstocks during a hydrotreating process. The catalysts also provide increased sulfur and MCR conversion during a hydrotreating process.Type: GrantFiled: February 26, 2019Date of Patent: March 17, 2020Assignee: Advanced Refining Technologies LLCInventors: Stanislaw Plecha, Narinobu Kagami, Viorel D. Duma, John Everett Creighton
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Patent number: 10584288Abstract: Catalyst supports, supported catalysts, and a method of preparing and using the catalysts for the demetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise alumina and 5 wt % or less titania. Catalyst prepared from the supports have at least 30 to 80 volume percent of its pore volume in pores having a diameter of between 200 and 500 angstroms. Catalysts in accordance with the invention exhibit improved catalytic activity and stability to remove metals from heavy feedstocks during a hydroconversion process. The catalysts also exhibit increased sulfur and MCR conversion.Type: GrantFiled: February 14, 2013Date of Patent: March 10, 2020Assignee: Advanced Refining Technologies LLCInventors: Viorel D. Duma, Matthew P. Woods
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Publication number: 20190184376Abstract: Spheroidal catalyst support, supported catalyst, and method of preparing and using the catalyst for hydrodemetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise titania alumina having 5 wt % or less titania and have greater than 30% percent of their pore volume in pores having a diameter of between 200 and 500 ?. Catalysts prepared from the supports contain Group 6, 9 and 10 metals or metal compounds supported on the titania alumina supports. Catalysts in accordance with the invention exhibit improved catalytic activity and stability to remove metals from heavy feedstocks during a hydrotreating process. The catalysts also provide increased sulfur and MCR conversion during a hydrotreating process.Type: ApplicationFiled: February 26, 2019Publication date: June 20, 2019Applicant: Advanced Refining Technologies LLCInventors: Stanislaw Plecha, Narinobu Kagami, Viorel D. Duma, John Everett Creighton
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Patent number: 9908105Abstract: Catalyst supports, supported catalysts, and a method of preparing and using the catalysts for the demetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise precipitated alumina prepared by a low temperature pH swing process. A large portion of the pore volume of the catalyst supports has pores with a diameter in the range of about 200 ? to about 500 ?. Catalysts prepared from the supports of the invention exhibit improved catalytic activity and stability to remove metals from heavy hydrocarbon feedstocks during a hydroconversion process. The catalysts also exhibit increased sulfur and MCR conversion during the hydroconversion process.Type: GrantFiled: November 24, 2015Date of Patent: March 6, 2018Assignee: Advanced Refining Technologies LLCInventors: Viorel D. Duma, Matthew P. Woods, Stanislaw Plecha
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Publication number: 20160074840Abstract: Catalyst supports, supported catalysts, and a method of preparing and using the catalysts for the demetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise precipitated alumina prepared by a low temperature pH swing process. A large portion of the pore volume of the catalyst supports has pores with a diameter in the range of about 200 ? to about 500 ?. Catalysts prepared from the supports of the invention exhibit improved catalytic activity and stability to remove metals from heavy hydrocarbon feedstocks during a hydroconversion process. The catalysts also exhibit increased sulfur and MCR conversion during the hydroconversion process.Type: ApplicationFiled: November 24, 2015Publication date: March 17, 2016Inventors: Viorel D. Duma, Matthew P. Woods, Stanislaw Plecha
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Publication number: 20160017240Abstract: Catalyst supports, supported catalysts, and a method of preparing and using the catalysts for the demetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise alumina and 5 wt % or less titania. Catalyst prepared from the supports have at least 30 to 80 volume percent of its pore volume in pores having a diameter of between 200 and 500 angstroms. Catalysts in accordance with the invention exhibit improved catalytic activity and stability to remove metals from heavy feedstocks during a hydroconversion process. The catalysts also exhibit increased sulfur and MCR conversion.Type: ApplicationFiled: February 14, 2013Publication date: January 21, 2016Applicant: ADVANCED REFINING TECHNOLOGIES LLCInventors: Viorel D. Duma, Matthew P. Woods
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Patent number: 9216407Abstract: Catalyst supports, supported catalysts, and a method of preparing and using the catalysts for the demetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise precipitated alumina prepared by a low temperature pH swing process. A large portion of the pore volume of the catalyst supports has pores with a diameter in the range of about 200 ? to about 500 ?. Catalysts prepared from the supports of the invention exhibit improved catalytic activity and stability to remove metals from heavy hydrocarbon feedstocks during a hydroconversion process. The catalysts also exhibit increased sulfur and MCR conversion during the hydroconversion process.Type: GrantFiled: March 14, 2014Date of Patent: December 22, 2015Assignee: Advanced Refining Technologies LLCInventors: Viorel D. Duma, Matthew P. Woods, Stanislaw Plecha
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Publication number: 20140262956Abstract: Catalyst supports, supported catalysts, and a method of preparing and using the catalysts for the demetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise precipitated alumina prepared by a low temperature pH swing process. A large portion of the pore volume of the catalyst supports has pores with a diameter in the range of about 200 ? to about 500 ?. Catalysts prepared from the supports of the invention exhibit improved catalytic activity and stability to remove metals from heavy hydrocarbon feedstocks during a hydroconversion process. The catalysts also exhibit increased sulfur and MCR conversion during the hydroconversion process.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: ADVANCED REFINING TECHNOLOGIES LLCInventors: Viorel D. Duma, Matthew P. Woods, Stanislaw Plecha