Patents by Inventor Yoneichi Ikeda
Yoneichi Ikeda 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: 7368052Abstract: A process is disclosed for discharging and transferring upwardly fluidized particles from a dense fluidizing layer forming section to a high-velocity transferring section having a diameter which is smaller than that of the dense fluidizing fluidized layer forming section, wherein at least one intermediate cylindrical section is provided between the dense fluidizing fluidized layer forming section and the high-velocity transferring section. The process can decrease the degree of changes in the amount of particles to be discharged from the dense fluidizing layer forming section and transferred by the riser, thereby proving a stable and uniform transfer of the fluidized particles.Type: GrantFiled: March 1, 2002Date of Patent: May 6, 2008Assignee: Nippon Mitsubishi Oil CorporationInventors: Yoneichi Ikeda, Yuichiro Fujiyama
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Publication number: 20020131911Abstract: A process is disclosed for discharging and transferring upwardly fluidized particles from a dense fluidizing layer forming section to a high-velocity transferring section having a diameter which is smaller than the dense fluidized layer forming section, wherein at least one intermediate cylindrical section is provided between the dense fluidized layer forming section and the high-velocity transferring section. The process can decrease the degree of changes in the amount of particles to be discharged from the dense fluidizing forming section and transferred by the riser, thereby proving a stable and uniform transfer of the fluidized particles.Type: ApplicationFiled: March 1, 2002Publication date: September 19, 2002Applicant: NIPPON MITSUBISHI OIL CORPORATIONInventors: Yoneichi Ikeda, Yuichiro Fujiyama
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Patent number: 6187272Abstract: A system is disclosed for recycling a powdery solid material used as a catalyst or a heat medium. The system simple in structure compared with a conventional system does not need to use a gas for transporting the solid and can readily maintain the pressure balance to recycle the solids smoothly in a stable manner.Type: GrantFiled: March 12, 1998Date of Patent: February 13, 2001Assignee: Nippon Mitsubishi Oil CorporationInventor: Yoneichi Ikeda
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Patent number: 4772378Abstract: Disclosed is a process for the thermal cracking of heavy oils, which comprises a thermal cracking step of contacting a heavy oil with a fine powder of a porous material fluidized by a fluidizing gas to mainly obtain a light oil and a regenerating step of gasifying and removing coke adhering to the fine powder taken out from the thermal cracking step while fluidizing the fine powder by a molecular oxygen-containing gas and a steam-containing gas, the fine powder being circulated between the two steps, wherein fine spherical particles having a pore volume of 0.2 to 1.5 cm.sup.3 /g, a specific surface area of 5 to 1500 m.sup.2 /g, an average pore size of 10 to 10,000 .ANG. and a weight average size of 0.025 to 0.25 mm, in which these properties are stably maintained at the temperature adopted for the thermal cracking, are used as the fine powder, and a hydrogen gas is made present at the thermal cracking step, the partial pressure of hydrogen is maintained at about 0.5 to about 5 Kg/cm.sup.Type: GrantFiled: June 23, 1987Date of Patent: September 20, 1988Assignee: Fuji Standard Research Kabushiki KaishaInventors: Terukatsu Miyauchi, Yoneichi Ikeda, Tatsuji Kikuchi
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Patent number: 4675098Abstract: An improved process for thermal cracking of a heavy oil comprising a step of thermal cracking of the heavy oil in contact with a fluidized bed of heated fine particles and a step of gasification of the coke which has deposited on the fine particles used in the thermal cracking, which gasification is conducted on the fine particles withdrawn from the thermal cracking step by contacting the particles with gas containing molecular oxygen while the particles are fluidized by the gas, the steps being practiced while the fine particles are circulated therebetween is disclosed. The improvement comprises a use of fine particles of a porous material, and conducting the gasification under specified conditions and so as to produce a product gas which is highly reducing.Type: GrantFiled: June 20, 1984Date of Patent: June 23, 1987Assignee: Fuji Standard Research Kabushiki KaishaInventors: Terukatsu Miyauchi, Yoneichi Ikeda, Tatsuji Kikuchi
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Patent number: 4668378Abstract: An improvement to a process for thermal cracking a heavy hydrocarbon oil comprising (1) a thermal cracking step of the heavy oil which is in contact with a fluidized bed of heated fine particles as a source of the heat required for the thermal cracking and (2) a regeneration step of the fine particles which are withdrawn from the thermal cracking step and on which coke formed during the thermal cracking has deposited, the steps (1) and (2) being practiced while the fine particles are circulated therebetween, is disclosed. The improvement comprises a use as the fine particles of microspheres of a porous material, division of the regeneration step into a gasification section and a combustion section, and restriction in the operation conditions, and an optional temperature control by controlling generation of steam in a cooling means which is installed in the combustion section and whose coolant is water to generate the steam.Type: GrantFiled: June 20, 1984Date of Patent: May 26, 1987Assignee: Fuji Standard Research Kabushiki KaishaInventors: Terukatsu Miyauchi, Yoneichi Ikeda, Masaharu Tashiro, Osamu Kubota
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Patent number: 4624807Abstract: A two-step process for producing microspherical pitch or green coke particles having an average diameter of 30-200 .mu.m from finely divided petroleum or coal pitch having a softening point of 60.degree.-220.degree. C. and a fixed carbon content of 40-75 wt %. In the first step the material pitch is fluidized in the stream of a gas substantially inert to the pitch at a temperature of 100.degree.-800.degree. C., the mixed stream is rapidly cooled to 30.degree.-400.degree. C., and microspherical pitch particles are recovered with or without separate recovery of an oily product. In the second step the pitch spheres are further subjected to thermal cracking and polycondensation by use of a fluidized bed at a temperature of 350.degree.-520.degree. C. for a retention time of 1 min. to 3 hours, and microspherical green coke particles and a light cracked oil are recovered. In both steps a pressure between the ordinary level and 10 kg/cm.sup.2 is used.Type: GrantFiled: July 26, 1983Date of Patent: November 25, 1986Assignee: Fuji Standard Research Kabushiki KaishaInventors: Terukatsu Miyauchi, Yoneichi Ikeda, Takao Nakagawa, Toshio Tsutsui, Tatsuji Kikuchi
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Patent number: 4490243Abstract: In a process for thermal cracking of heavy oils in which a heavy petroleum oil is caused to contact a heated fluidized bed of solid particles in the presence of steam thereby to obtain principally light petroelum oils, the solid particles are stable at the temperature of the thermal cracking and are of substantially spherical shape of porous nature of a pore volume of 0.10 to 1.0 cm.sup.3 /g, a specific surface area of 50 to 1,500 m.sup.2 /g, and a weight-mean diameter of 0.025 to 0.25 mm.Type: GrantFiled: June 15, 1983Date of Patent: December 25, 1984Assignee: Terukatsu MiyauchiInventors: Terukatsu Miyauchi, Yoneichi Ikeda, Tatsuji Kikuchi
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Patent number: 4208303Abstract: A process for regenerating a deteriorated iron-antimony oxide containing catalyst comprising as essential components (i) iron, (ii) antimony, (iii) at least one element selected from the group consisting of vanadium, molybdenum and tungsten and (iv) tellurium, having the crystalline structure of an iron-antimony oxide compound, being substantially free of free antimony trioxide (Sb.sub.2 O.sub.3) and containing at least 50 wt % of the original tellurium content of the fresh catalyst which comprises calcining said catalyst under a non-reducing atmosphere at a temperature of from about 600.degree. to 950.degree. C. and in the vicinity of or lower than the final calcining temperature used for producing the catalyst.Type: GrantFiled: October 25, 1978Date of Patent: June 17, 1980Assignee: Nitto Chemical Industry Co., Ltd.Inventors: Yutaka Sasaki, Yoneichi Ikeda, Masaharu Tashiro, Toshio Nakamura