Nippon Shokubai Kagaku Kogyo Co., Ltd.

Other

Ngk Insulators, Inc.

Kubota Corporation

Nippon Shokubai Co., Ltd.

Nippon Shokubai Koguko Kogyo Co., Ltd.

Akira Inoue

Kunio Sano

Kiichiro Mitsui

Motonobu Kobayashi

Sadao Terui

Tooru Ishii

Tetsuji Ono

Noboru Sugishima

Futoru Kinoshita

Kazuyoshi Nishikawa

Noriaki Ikeda

Toshihide Kanzaki

Yasushi Fujii

Mitsuharu Hagi

Koichi Saito

Yukio Aoki

Takashi Ohara

Takehiko Suzuki

Terushige Uno

Yoshiyuki Yokota

Yoshiyuki Nakanishi

Hideki Sogabe

Masakatsu Hiraoka

Yoshinori Imoto

Katsunosuke Hara

Koshi Horie

Yoku Nanba

Toshihiko Teramoto

Mitsuaki Ikeda

Isamu Kubomoto

Shinji Ikuta

Kazuhiko Ogura

Tsuyoshi Nagai

Hutoru Kinoshita

Kuinio Sano

Seiichiro Imamura

Tsugunori Hata

A catalyst for the purification of an exhaust gas by the removal, through selective reduction, of nitrogen oxides present in the exhaust gas, which comprises (A) 80 to 95% by weight of a sulfur oxide-containing catalytic oxide obtained by thermally treating at least one hydrous oxide compound selected from the group consisting of binary hydrous oxide compound of titanium and silicon, binary hydrous oxide compound of titanium and zirconium and ternary hydrous oxide compound of titanium, zirconium and silicon in the presence of at least one sulfur compound selected from the group consisting of sulfuric acid and ammonium sulfate, (B) 0 to 5% by weight of a catalytic oxide comprising vanadium oxide, (C) 1 to 15% by weight of a catlytic oxide comprising the oxide of at least one metal selected form the group consisitng of tungsten, molybdenum, tin and cerium.

Catalyst for purifying nitrogen oxides from exhaust and waste gases

A gas containing malodorous components is deodorized by passing the gas over a MnO.sub.2 based catalyst while the catalyst is heated by directly applying an electric current thereto, thereby catalytically oxidizing the malodorous components in the gas and effecting their removal.

Method of deodorizing a gas containing maloderous components

A catalyst composition including component A and component B, the component A being a carrier, preferably having a honeycomb structure, and being a single-component oxide or a multi-component composite oxide of at least one metal of titanium, silicon and zirconium, and the component B being a catalyst component deposited on the carrier of component A and being at least one member selected from the group of noble metals and other specifically limited metals and their oxides, is very effective for decomposing and removing poisonous organic chlorine compounds, such as dioxin and the like, or poisonous organic chlorine compound-forming substances contained in an exhaust gas exhausted from an incinerator of an incineration plant provided with the incinerator and a dust collector. In addition, and the generation of the poisonous organic chlorine compound from the incineration plant can be prevented.

Method of treating exhaust gas

A process for producing 1-aminoanthraquinones represented by formula (C) ##STR1## wherein R.sup.1 and R.sup.2, independently from each other, denote one type selected from a hydrogen atom, an alkyl group having 1 to 4 carbon atoms and a halogen atom,

Process for producing 1-aminoanthraquinones

This invention relates to a catalyst for use in water treatment and to a method for the water treatment by the use of the catalyst. The catalyst comprises a first catalyst component e.g. the oxide of titanium, silicon, aluminum and zirconium, and a second catalyst component e.g. manganese, iron, cobalt, nickel, cerium, tungsten, copper, silver, gold, platinum, palladium, rhodium, ruthenium, and iridium or a sparingly water-soluble compound of the metal.

Catalyst for water treatment

A method for the purification of waste water by the use of a heat-exchanger type reaction vessel composed of a plurality of inner tubes and a shell defining jointly with the outer peripheries of the inner tubes a passage for the flow of a heat transfer medium, which method comprises passing said waste water through said inner tubes and, at the same time, feeding a molecular oxygen-containing gas to the flow of said waste water thereby establishing contact between said waste water and said feed gas and consequently effecting wet oxidation of the impurities present in said waste water.

Method for purification of waste water

A process for producing 1-aminoanthraquinones represented by the formula (C) ##STR1## wherein R.sup.1 and R.sup.2, independently from each other, denote one type selected from a hydrogen atom, an alkyl group having 1 to 4 carbon atoms and a halogen atom, which comprises converting 5-nitro-1,4,4a,9a-tetrahydroanthraquinones respresented by formula (A) ##STR2## wherein R.sup.1 and R.sup.2 are as defined above, into 1-hydroxylaminoanthraquinones represented by formula (B) ##STR3## wherein R.sup.1 and R.sup.2 are as defined above, in the presence of a basic compound, and electrolytically reducing the resulting 1-hydroxylaminoanthraquinones in the presence of a basic compound.

A catalyst for the purification of a gas containing ozone or a component of offensive odor is composed of (A) a composite oxide comprising (a) titanium and (b) at least one element selected from the group consisting of Si, Zr, and P and (B) at least one element selected from the group consisting of Mn, Fe, Co, Ni, Ag, Pt, Pd, and Rh.

Method for purification of gas

A method for the treatment of waste water, which comprises wet oxidizing said waste water with a molecular oxygen-containing gas of an amount 1.0 to 1.5 times the amount thereof theoretically necessary for decomposing at least one substance selected from the group consisting of organic substances and inorganic substances present in said waste water to nitrogen, carbon dioxide, and water at a temperature not exceeding 370.degree. C. under a pressure enough for said waste water to retain a liquid phase in the presence of a solid catalyst comprising of a first catalytic component formed of titanium dioxide, a second catalytic component formed of the oxide of an element of lanthanide series, and a third catalytic component containing at least one metal selected from the group consisting of manganese, iron, cobalt, nickel, tungsten, copper, silver, gold, platinum, palladium, rhodium, ruthenium, and iridium or a water-insoluble or sparingly water-soluble compound of said metal.

Method for treatment of waste water

The present invention concerns a method of removing nitrogen oxides in exhaust gases from a diesel engine by using a catalyst in a reacter under the presence of ammonia, wherein a humidity of in-take air as a specific factor and one or more of engine power, fuel consumption amount of engine, temperature of engine in-take air and exhaust gas temperature as selective factors are measured respectively as the measuring factors and the flow rate of ammonia is controlled based on measured values and ammonia is supplied to an exhaust gas flow channel from the engine to the reactor.

Removing nitrogen oxides in exhaust gases from a diesel engine

A carrier for a waste gas-treating catalyst, comprising an inorganic refractory oxide containing a composite oxide of titanium and zirconium possessing a crystalline structure of ZrTiO.sub.4, which is produced by heat-treating a substance containing a titanium compound and a zirconium compound at a temperature in the range of 600.degree. to 1,000.degree. C., and a catalyst for treatment of a waste gas comprising the carrier deposited a catalytically active component.

Carrier for gas-treating catalyst, method for production thereof and

Method of removing nitrogen oxides in exhaust gases from a diesel engine

A method of disposing of organic chlorine compounds by burning them in contact with a catalyst of composite oxides selected from titanium-silicon composite oxides, titanium-zirconium composite oxides, and titanium-silicon-zirconium composite oxides, whereby the resulting hydrogen chloride (HCl) is adsorbed by a basic absorbent.

Method of disposal of organic chlorine compounds by combustion

In a sound-proof type engine working machine with a waste heat recovery apparatus, including a sound-proof type engine working machine which comprises a liquid cooled internal combustion engine and a working machine such as an electricity generator, a compressor and the like adapted to be driven by the engine and a waste heat recovery apparatus adapted to recover the waste heat from the engine, the engine cooling liquid within the water jacket of the engine is adapted to circulate through a waste heat recovery heat exchanger and a radiator, as well as the heat to be radiated in the radiator is adapted to be controlled by means of a radiated heat control device, and the engine and the working machine are horizontally arranged side by side each other within the sound-proof casing in a longitudinal direction thereof, an upper support frame is fixed on the upper side of the sound-proof casing, and the radiator and a radiator fan associated therewith are disposed on the upper support frame.

Sound-proof type engine working machine with waste heat recovery

A process for producing aromatic or heterocyclic nitriles, which comprises reacting an alkyl-substituted aromatic hydrocarbon or an alkyl-substituted heterocyclic compound with ammonia and oxygen in the presence of a catalyst composition comprising (a) at least one composite oxide selected from the group consisting of a binary composite oxide comprising titanium and silicon, a binary composite oxide comprising titanium and zirconium and a ternary composite oxide comprising titanium, silicon and zirconium, and (b) an oxide of at least one metal selected from the group consisting of vanadium, molybdenum, tungsten, chromium, antimony, bismuth, phosphorus, niobium, iron, nickel, cobalt, manganese and copper.

Process for producing aromatic nitriles or heterocyclic nitriles

Growing community of inventors

Hirakata, Japan

Akira Inoue