Fuji Oil Company Limited

Chiyoda Corporation

Chiyoda Chemical Engineering Construction Co., Ltd.

Fuji Standard Research, Inc.

Research Association for Residual Oil Processing

Japan As Represented by Ministry of International Trade and Industry,

Basic Industries Bureau of Ministry of International Trade and Industry

Chiyoda Chemical Engineering & Constr.

Toru Takatsuka

Seiya Hirohama

Ryuzo Watari

Shimpei Gomi

Tomomitsu Takeuchi

Itaru Matsuo

Hideo Hashimoto

Masazumi Ojiro

Futoshi Kanegae

Tsunehisa Muto

Shinichi Inoue

Yoshimi Okada

Toshiji Makabe

Akihiro Mutou

Tomio Arai

Ryuichiro Kajiyama

Masaki Fujii

Hisashi Nomura

Shigeru Miwa

Hidehiko Kudou

Tateo Ono

Takeru Iimori

Yuzo Takahashi

Hitoshi Maekawa

Tamotsu Ito

Yoshihiko Shohji

Yasuyuki Morimoto

Shuzo Satoh

Toshio Kushida

Tetsuo Shibagaki

This invention relates to a 4 group metal oxide and to a method for preparation thereof and the 4 group metal oxide prepared by adding a particle growth inhibiter to a hydrosol a hydrogel or a dried product of a hydrous 4 group metal oxide represented by MO(OH)(wherein M denotes a 4 group metal and x is a number greater than 0.1 or x&#x3e;0.1) followed by drying and calcining has a specific surface area of 80 m/g or more, a pore volume of 0.2 ml/g or more and a pore sharpness degree of 50% or more and excellent heat stability and is useful for a catalyst or a catalyst carrier in which a catalyst metal is dispersed to a high degree. This invention further relates to a porous 4 group metal oxide and to a method for preparation thereof and the 4 group metal oxide prepared by application of a pH swing operation is characterized by a large specific surface area, excellent heat stability, high dispersion of a catalyst metal and a controlled and sharp pore distribution and is useful for a catalyst or a catalyst carrier of excellent reaction selectivity.

Porous 4 group metal oxide and method for preparation thereof

A gas separation process and a unit therefor. The process comprises the steps of: introducing a gas consisting of two or more components into an adsorption system in which adsorbent particles circulate in a fluidized state, thereby to allow, at atmospheric pressure or an elevated pressure, the adsorbent particles to adsorb a gas component to be separated from the gas; transferring the adsorbent particles adsorbing the gas component to a desorption system; and then desorbing the gas component from the adsorbent particles in the desorption system which is regulated to have either a lower pressure or a lower pressure and a higher temperature than the adsorption system.

Gas separation process and unit therefor

Process for purifying aqueous crude ethanol solution

Method for the separation of impurities from crude ethanol aqueous

A process of thermally cracking a heavy petroleum oil wherein the heavy petroleum oil is treated successively in a cracking furnace and then in a perfect mixing type tank reactor. The thermal cracking in the cracking furnace is performed at a temperature at the outlet of the cracking furnace of 450.degree.-520.degree. C. with a conversion of at least 60-75% of the overall conversion rate while the thermal cracking in the tank reactor is performed at a temperature of 400.degree.-450.degree. C. a pressure of from ambient pressure to 1 kg/cm.sup.2 for a period of time of less than 30 minutes but not less than 10 minutes while feeding steam having a temperature of 435.degree.-700.degree. C. to the tank reactor in an amount of 8-20% by weight of the heavy petroleum oil fed to the cracking furnace.

Process of thermally cracking heavy petroleum oil

A method of cracking a heavy hydrocarbon oil containing a residual fraction with a boiling point of 538.degree. C. or higher, including contacting the heavy hydrocarbon oil with a fluidized bed of a particulate composite catalyst which includes an amorphous refractory inorganic oxide and a crystalline aluminosilicate dispersed in the oxide and which has a surface area distribution such that the surface area of pores having pore diameters in the range of from three times to six times the average molucular size of the residual fraction is at least 60% of the surface area of pores having pore diameters in the range of 15-150 .ANG..

Fluid catalytic cracking of heavy hydrocarbon oil

A heavy hydrocarbon feed stock is, after being heat-treated in a first cracking zone, is introduced into a second thermal cracking zone for obtaining a thermally cracked product and a pitch product. The second cracking zone has a plurality of cracking reactors which are connected in series, through which is successively passed the treated feed stock and to each of which is supplied a gaseous heat transfer medium to maintain the liquid phase therein at a temperature sufficient for effecting the thermal cracking and to strip the resulting distillable, cracked components from the liquid phase. The thermal cracking temperature in one reactor is so controlled as to become higher than that in its adjacent upstream-side reactor. The distillable, cracked components in respective reactors are removed overhead therefrom and separated into a heavy fraction and a light fraction, while the liquid phase in the downstream-end reactor is discharged therefrom for recovery as the pitch product. The light fraction is recovered as a light product oil, while the heavy fraction is fed to a third thermal cracking zone for obtaining a tar-containing product which is recycled to at least one of the reactors of the second thermal cracking zone together with a naphthene base heavy hydrocarbon oil.

Process of thermally cracking heavy hydrocarbon oils

A heavy hydrocarbon feed stock is, after being heat-treated in a first cracking zone, introduced into a second thermal cracking zone for obtaining a thermally cracked product and a pitch product. The second cracking zone has a plurality of cracking reactors which are connected in series, through which is successively passed the treated feed stock and to each of which is supplied a gaseous heat transfer medium to maintain the liquid phase therein at a temperature sufficient for effecting the thermal cracking and to strip the resulting distillable, cracked components from the liquid phase. The thermal cracking temperature in one reactor is so controlled as to become higher than that in its adjacent upstream-side reactor. The distillable, cracked components in respective reactors are removed overhead therefrom and separated into a heavy fraction and a light fraction, while the liquid phase in the downstream-end reactor is discharged therefrom for recovery as the pitch product. The light fraction is recovered as a light product oil, while the heavy fraction is fed to a third thermal cracking zone for obtaining a tar-containing product which is recycled to at least one of the reactors of the second thermal cracking zone.

Thermal cracking of heavy hydrocarbon oils

Growing community of inventors

Yokohama, Japan

Toru Takatsuka