Abstract: A gas production device 1 comprises a connection unit 2 for supplying an exhaust gas including carbon dioxide CO2, a reducing gas supply unit 3 that supplies a reducing gas including H2 that reduces a reducing agent 4R that has been brought into an oxidized state by contact with the carbon dioxide CO2, the reducing agent including a metal oxide that generates CO by reducing the carbon dioxide CO2, and a reaction unit 4 provided with a plurality of reactors 4a to 4d connected respectively to the connection unit 2 and the reducing gas supply unit 3, and with the educing agent 4R that is contained in each of the reactors 4a to 4d, in which the reaction unit 4 being capable of switching between the oxidizing gas and the reducing gas to be supplied to each of the reactors 4a to 4d.

Abstract: A gas production device and a gas production system capable of continuously and stably manufacturing a produced gas containing carbon monoxide from a raw material gas containing carbon dioxide are provided. A gas production device 1 manufactures a produced gas containing carbon monoxide by bringing a raw material gas containing carbon dioxide into contact with a reducing agent containing a metal oxide that reduces the carbon dioxide.

Abstract: A gas production device and a gas production system capable of efficiently manufacturing a produced gas containing carbon monoxide from a raw material gas containing carbon dioxide are provided. The gas production device 1 is an apparatus that manufactures a produced gas containing carbon monoxide by bringing a raw material gas containing carbon dioxide into contact with a reductant that reduces the carbon dioxide.

Abstract: A gas manufacturing apparatus and a gas manufacturing system capable of efficiently manufacturing a produced gas containing carbon monoxide from a raw material gas containing carbon dioxide are provided. The gas manufacturing apparatus 1 manufactures a produced gas containing carbon monoxide by bringing a raw material gas containing carbon dioxide into contact with a reducing agent that reduces the carbon dioxide.

Abstract: A gas production apparatus and a gas production system capable of continuously and stably manufacturing a produced gas containing carbon monoxide from a raw material gas containing carbon dioxide are provided. A gas production apparatus 1 is an apparatus that manufactures a produced gas containing carbon monoxide by bringing a raw material gas containing carbon dioxide into contact with a reducing agent containing a metal oxide that reduces carbon dioxide. The gas production apparatus includes a reaction section 4 that includes a plurality of reactors 4a and 4b and a reducing agent arranged in the reactors 4a and 4b, and that is capable of switching between the raw material gas and the reducing gas to be supplied to each of the reactors 4a and 4b.

Abstract: Disclosed is a hydrogenated norbornene ring-opened polymer, wherein a proportion of a norbornene-derived repeating unit is 90% by mass or more, a meso diad fraction of the norbornene-derived repeating unit is 80% or more, and in an X-ray diffraction pattern measured at 25° C. using a CuK? radiation source, an X-ray diffraction peak is observed which has a peak top positioned in a diffraction angle (2?) range of 17° or more and 18° or less.

Abstract: The method of the present invention for producing 1,3-butadiene includes: vaporizing an ethanol feedstock in a vaporizer (104), supplying the feedstock to two or more parallel first reactors (108) to convert ethanol into acetaldehyde in the presence of a first catalyst; supplying a resulting intermediate gas to a second reactor (110) to convert ethanol and acetaldehyde into 1,3-butadiene in the presence of a second catalyst; purifying a resulting crude gas containing 1,3-butadiene by a gas-liquid separator (112), a first distillation column (114), a fourth reactor (116), and a second distillation column (118); and supplying an oxygen-containing gas to at least one of the two or more parallel first reactors (108) under specific conditions, while discharging a carbon dioxide-containing gas from the first reactor (108), to thereby regenerate the first catalyst, while continuing the conversion reaction.

Abstract: In the method of the present invention, 1,3-butadiene is produced by vaporizing an ethanol feedstock in a vaporizer (104), feeding the resulting into two or more parallel first reactors (108) to convert the ethanol to acetaldehyde in the presence of a first catalyst, supplying the resulting intermediate gas to a second reactor (110) to convert the ethanol and acetaldehyde to 1,3-butadiene in the presence of a second catalyst, purifying the resulting crude gas containing 1,3-butadiene by a gas-liquid separator (112), a first distillation column (114), a fourth reactor (116), a second distillation column (118), and mixing one of both of a part of the ethanol-containing gas and an acetaldehyde-containing gas obtained in the second distillation column (118) are mixed with the intermediate gas, thereby adjusting an ethanol/acetaldehyde molar ratio in the intermediate gas to 1 to 100.

Abstract: System and method for producing steel is provided that efficiently reduce carbon dioxide emissions.

Abstract: Provision of a gas production apparatus that can stably produce a product gas with carbon monoxide as its main component from a separated gas including carbon dioxide as a main component.

Abstract: In the method of the present invention, 1,3-butadiene is produced by vaporizing an ethanol feedstock in a vaporizer (104), feeding the resulting into two or more parallel first reactors (108) to convert the ethanol to acetaldehyde in the presence of a first catalyst, supplying the resulting intermediate gas to a second reactor (110) to convert the ethanol and acetaldehyde to 1,3-butadiene in the presence of a second catalyst, purifying the resulting crude gas containing 1,3-butadiene by a gas-liquid separator (112), a first distillation column (114), a fourth reactor (116), a second distillation column (118), and mixing one of both of a part of the ethanol-containing gas and an acetaldehyde-containing gas obtained in the second distillation column (118) are mixed with the intermediate gas, thereby adjusting an ethanol/acetaldehyde molar ratio in the intermediate gas to 1 to 100.

Abstract: The method of the present invention for producing 1,3-butadiene includes: vaporizing an ethanol feedstock in a vaporizer (104), supplying the feedstock to two or more parallel first reactors (108) to convert ethanol into acetaldehyde in the presence of a first catalyst; supplying a resulting intermediate gas to a second reactor (110) to convert ethanol and acetaldehyde into 1,3-butadiene in the presence of a second catalyst; purifying a resulting crude gas containing 1,3-butadiene by a gas-liquid separator (112), a first distillation column (114), a fourth reactor (116), and a second distillation column (118); and supplying an oxygen-containing gas to at least one of the two or more parallel first reactors (108) under specific conditions, while discharging a carbon dioxide-containing gas from the first reactor (108), to thereby regenerate the first catalyst, while continuing the conversion reaction.

Abstract: In the method of the present invention, 1,3-butadiene is produced by vaporizing an ethanol feedstock in a vaporizer (104), feeding the resulting into two or more parallel first reactors (108) to convert the ethanol to acetaldehyde in the presence of a first catalyst, supplying the resulting intermediate gas to a second reactor (110) to convert the ethanol and acetaldehyde to 1,3-butadiene in the presence of a second catalyst, purifying the resulting crude gas containing 1,3-butadiene by a gas-liquid separator (112), a first distillation column (114), a fourth reactor (116), a second distillation column (118), and mixing one of both of a part of the ethanol-containing gas and an acetaldehyde-containing gas obtained in the second distillation column (118) are mixed with the intermediate gas, thereby adjusting an ethanol/acetaldehyde molar ratio in the intermediate gas to 1 to 100.

Abstract: Provided is a hydrogenated ring-opened polymer having excellent ductility. The hydrogenated ring-opened polymer includes 90 mass % or more of norbornene-derived structural units. The proportion of meso diads of cis-structural units (I) of formula (I), shown below, included among the norbornene-derived structural units is not less than 0% and not more than 30% or is not less than 70% and not more than 100%. Trans-structural units (II) of formula (II), shown below, constitute a proportion of not less than 0.5% and not more than 20% among the total of the cis-structural units (I) of formula (I) and the trans-structural units (II) of formula (II).

Abstract: Disclosed is a hydrogenated norbornene ring-opened polymer, wherein a proportion of a norbornene-derived repeating unit is 90% by mass or more, a meso diad fraction of the norbornene-derived repeating unit is 80% or more, and in an X-ray diffraction pattern measured at 25° C. using a CuK? radiation source, an X-ray diffraction peak is observed which has a peak top positioned in a diffraction angle (2?) range of 17° or more and 18° or less.