Toyo Engineering Corporation

Mitsui Toatsu Chemicals, Incorporated

Katsutoshi Kikuchi

Tadayoshi Tomita

Kozo Ohsaki

Yoshitsugu Hirota

Toru Numaguchi

Kenji Yoshida

Kazuyoshi Isogaya

Nobuhiro Sato

Noboru Mochiduki

Hisaharu Kuboyama

Atsushi Moriya

Eiiti Sugiyama

Toshihiro Ishida

A catalyst for steam reforming of a hydrocarbon carrying from three to twenty weight percent of nickel as nickel oxide, which is made by immersing alumina particles in a nickel containing solution, drying and then calcining the particles, which alumina particles are of a .alpha.-alumina and of 98 weight percent or more purity and has a pore volume of the pores having a diameter of from 0.1 to 0.5 microns of 0.2 ml/g or more and pore volume of the pores having a diameter of more than 0.5 microns but not more than 10 microns of 0.05 ml/g or more.

Catalyst for steam reforming

A catalyst for steam reforming of a hydrocarbon or alcohol carrying from three to twenty weight percent of nickel as nickel oxide, which is made by immersing alumina particles in a nickel containing solution, drying and then calcining the particles, which alumina particles are of .alpha.-alumina and of 98 weight percent or more purity and has a pore volume of the pores having a diameter of from 0.1 to 0.5 micron of 0.2 ml/g or more and a pore volume of the pores having a diameter of 0.5 microns or more of 0.05 ml/g or more.

A process is disclosed for the thermal cracking of heavy oil containing nonvaporizable, high-molecular weight hydrocarbone in the presence of steam in one or more thermal cracking tubes or ducts, which process is characterized in that a fluid comprising steam and heavy oil is flowed through a thermal cracking tube such that thermal cracking is carried out under the following conditions:

Process for thermal cracking of heavy oil

This invention provides an improved, simple and energy saving process for producing a gas containing methane, which process utilizes a reactor having a catalyst bed of a structure wherein a synthesis gas is allowed to pass perpendicularly to the longitudinal directions of a plurality of cooling tubes installed vertically within the catalyst bed. Within the cooling tubes, a liquid coolant at its boiling temperature is flowed upwardly under pressure. A portion of the reaction product gas leaving the catalyst bed is mixed, without cooling, with fresh feed gas and is recirculated to the catalyst bed. The amount of the recycled gas is less than 5 times the amount of fresh feed gas. The foregoing process produces a product gas containing methane from a feed gas containing carbon monoxide and hydrogen.

Process for producing a gas containing methane

A process for catalytic gasification of heavy oil of a specific gravity of higher than 0.7 with steam or steam/oxygen-containing gas characterized in that the heavy oil is contacted with chromium oxide catalyst or a catalyst comprising a mixture of chromium oxide and one or more of alkaline earth metal oxides, aluminum oxide, zirconium oxide, nickel oxide and cobalt oxide. More particularly, the present invention relates to a process for catalytic gasification of heavy oil of a specific gravity of higher than 0.7 characterized in that the heavy oil is contacted with a gasification catalyst comprising calcium aluminate, an alkali aluminate or tungsten-containing nickel and then the heavy oil is further contacted with said chromium oxide catalyst or chromium oxide-containing catalyst.

Catalytic gasification

A gasification process for forming a gas mixture containing hydrogen wherein a hydrocarbon including a heavy residual oil is atomized with a mixture of an oxygen-containing gas and steam in an atomizing zone, the formed jet streams containing the atomized hydrocarbon drops are introduced to the catalyst bed while adjusting the residence time in the atomizing zone to 0.05 to 5 seconds, substantially without forming eddy currents and the reaction is carried out at a temperature of at least 850.degree. C. to form said gas mixture while avoiding deposition of solid carbon on said catalyst bed.

Gasification process

A hydrogen manufacturing process is carried out by catalytic steam reforming of normally gaseous or liquid hydrocarbons using a catalyst comprising substantially silica-free aluminum oxide at temperatures above 850.degree. C., the catalyst optionally also comprising more than 10 weight percent, preferably more than 20 weight percent, of at least one of the group consisting of beryllium oxide, calcium oxide and strontium oxide.

Process for manufacturing gaseous mixtures rich in hydrogen

A hydrogen manufacturing process is carried out by catalytic steam reforming of normally gaseous or liquid hydrocarbons using a catalyst comprising substantially silica-free aluminum oxide at temperatures above 850.degree.C., the catalyst optionally also comprising more than 10 weight percent, preferably more than 20 weight percent, of at least one of the group consisting of beryllium oxide, calcium oxide and strontium oxide.

Growing community of inventors

Chiba, Japan

Katsutoshi Kikuchi