Chiyoda Chemical Engineering Construction Co., Ltd.

Chiyoda Corporation

Chiyoda Chemical Engineering & Construction

Masayoshi Inooka

Munekazu Nakamura

Tatsuo Morimoto

Masatoshi Matsuda

Motoyoshi Wakabayashi

Teizaburo Yawata

Masaaki Kasuya

Yoshihiro Ohguchi

Yoshihoro Ohguchi

A sludge-like waste containing fine particulate gallium compound, an organic substance capable of forming coke upon calcination and a light oil or water are treated for the recovery of the gallium value as molten metallic gallium by a process wherein the waste is first dried to form a dense aggregate of the particulate gallium compound, followed by calcination and vacuum thermal decomposition. The aggregate may be molded under pressure into any desired shape before calcination.

Process for recovering metallic gallium from gallium compound-containing

Process for hydrocracking hydrocarbons with hydrotreatment-regeneration

Heavy hydrocarbon oils are processed by hydrotreatment over a sepiolite supported metal catalyst, described fuller in U.S. Pat. No. 4,152,250, whereby metallic impurities are removed from the oil and its asphaltene content is decreased, and the hydrotreated oil is solvent deasphalted using a propane, butane, pentane, hexane or heptane solvent or mixtures of these to give a deasphalted oil suitable for further treatment, e.g. hydrodesulphurization, and an asphaltic residue.

Processing heavy hydrocarbon oils

A process for catalytically hydrotreating a heavy oil containing soluble metals in two steps at a temperature of 320.degree. to 470.degree. C. and a hydrogen pressure of 30 to 350 kg/cm.sup.2, wherein the oil is substantially desulfurized in the first step in the presence of a first-step catalyst and then demetallized in the second step in the presence of a second-step catalyst, the desulfurization selectivity (as defined in the specification) of the first-step catalyst being higher than that of the second-step catalyst. According to this process, the metal content and the sulfur content of the treated oil can be prescribed at the desired levels, and a low-sulfur, low-metal oil can be obtained with a relatively small amount of hydrogen chemically consumed.

Process for hydrotreating heavy oils containing metals

This invention relates to a catalyst for hydrotreatment of hydrocarbons comprising one or more of metals selected from the group consisting of transition metals and metals of group IIb of the periodic table supported on sepiolite. More particularly it relates to a catalyst effective in the selective demetallization treatment of hydrocarbons.

Catalysts for demetallization treatment of _hydrocarbons supported on

Demetallation of hydrocarbons with catalysts supported on sepiolite

A catalyst obtained by admixing red mud with alumina or/and an alumina-containing substance, optionally adjusting the water content of the admixture and/or adding an organic binder to the admixture, kneading and shaping the admixture into pellets having suitable size and shape, and calcining the pellets of 600.degree. C to 1,100.degree. C. The catalyst has a high compression strength and can, when used in the hydrodemetallization of hydrocarbons, achieve a high rate of demetallization and a low yield of low boiling fractions. The rate of demetallization is enhanced when the process is carried out using a hydrogen feed containing hydrogen sulfide.

Catalysts for hydrodemetallization of hydrocarbons containing metallic

A catalyst obtained by admixing red mud with alumina or/and an alumina-containing substance, optionally adjusting the water content of the admixture and/or adding an organic binder to the admixture, kneading and shaping the admixture into pellets having suitable size and shape, and calcining the pellets at 600.degree. to 1,100.degree. C. The catalyst has a high compression strength and can, when used in the hydrodemetallization of hydrocarbons, achieve a high rate of demetallization and a low yield of low boiling fractions. The rate of demetallization is enhanced when the process is carried out using a hydrogen feed containing hydrogen sulfide.

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Yokohama, Japan

Masayoshi Inooka