Abrégé

A method for preparing naphtha includes: carrying out a catalytic dehydrogenation reaction of propane and butane under the action of a dehydrogenation catalyst to obtain a dehydrogenation reaction product; and carrying out an aromatization reaction of the dehydrogenation reaction product under the action of a catalyst to obtain an aromatization product. Wherein, an active component in the dehydrogenation catalyst comprises at least one element selected from a group consisting of In, Ge, Al, Bi and Ru. The method improves the conversion rate of alkane, and the generated olefins are further aromatized to produce naphtha rich in aromatic hydrocarbons. The olefin of the aromatized product is hydrogenated and saturated to produce conventional naphtha or used for being blended with crude oil.

Classes IPC  ?

• C10G 59/02 - Traitement d'essence "naphta" uniquement par plusieurs procédés de réformage, ou par au moins un procédé de réformage et au moins un procédé ne modifiant pas substantiellement le point d'ébullition de l'essence "naphta" uniquement par plusieurs étapes en série

Abrégé

A method for aromatization of propane and butane includes: carrying out a catalytic dehydrogenation reaction of propane and butane under the action of a dehydrogenation catalyst to obtain a dehydrogenation reaction product; and carrying out an aromatization reaction of the dehydrogenation reaction product under the action of a catalyst to obtain an aromatization product. Wherein, a reaction-regeneration device for dehydrogenation of alkane is provided; a regenerator is arranged above a reactor; a spent catalyst riser pipe extends into a dilute- phase section of the regenerator from the top of the reactor; and a regenerated catalyst delivery pipe extends into the reactor from the bottom of the regenerator. The method improves the conversion rate of alkane, and the generated olefins are further aromatized to produce naphtha rich in aromatic hydrocarbons. The dehydrogenation reactor and the regenerator are arranged up and down, so the structure is compact and the occupied space is small.

Classes IPC  ?

• C07C 5/32 - Préparation d'hydrocarbures à partir d'hydrocarbures contenant le même nombre d'atomes de carbone par déshydrogénation avec formation d'hydrogène libre
• B01J 29/04 - Catalyseurs contenant des tamis moléculaires  ayant des propriétés d'échangeurs de base, p.ex. zéolites cristallines, argiles pontées

Abrégé

A rotary disc structure special for a drop-by-drop centrifugal atomization method, comprising: a base body, the base body being a main body structure of which the longitudinal section formed by a receiving part (1) at the upper part and a support part (2) at the lower part is similar to a "T shape", and the upper surface of the receiving part (1) being provided with a circular groove having a specific radius and coaxial with the center of the receiving part (1); an atomization plane (3) of a disc structure, the disc matching the circular groove and being in interference fit with the circular groove, and the atomization plane (3) being made of a material having a wetting angle with an atomization melt of less than 90°; a vent hole (4) provided in the receiving part (1) and the support part (2) in a through manner, the upper end surface of the vent hole (4) contacting the lower end surface of the atomization plane (3), and the lower end of the vent hole (4) being communicated with the outside. A split rotary disc structure is used, a material having good wettability with an atomization melt is used as an atomization plane of the rotary disc, and a material having poor thermal conductivity is used as a base body of the rotary disc, so that metal liquid drops can be well received in an atomization and pulverization process, and full spreading atomization of the liquid drops is facilitated.

Classes IPC  ?

• B22F 9/10 - Fabrication des poudres métalliques ou de leurs suspensions; Appareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques à partir d'un matériau liquide par coulée, p.ex. à travers de petits orifices ou dans l'eau, par atomisation ou pulvérisation en employant la force centrifuge

Abrégé

Provided in the present invention is a method for preparing a hydrogen-rich gas by gasification of a solid organic substance and steam, comprising: in a pyrolysis reactor apparatus, the solid organic substance feedstock is heated for a pyrolysis reaction; and, a gaseous product generated by the pyrolysis reaction is subjected to a gasification reaction with steam in a moving-bed gasification reactor apparatus to produce the hydrogen-rich gas. Also provided in the present invention is a system for preparing the hydrogen-rich gas from the solid organic substance, comprising: solid heat carrier multistage dust remover, the pyrolysis reactor apparatus, the moving-bed gasification reactor apparatus, and a riser combustion reactor. The method of the present invention is operated at room pressure, has a simplified process, and is applicable in gasification and co-gasification of highly volatile solid organic substances, including feedstock containing increased levels of water content, minerals, and sulfur content.

Classes IPC  ?

• C10J 3/60 - Procédés
• C10J 3/72 - Autres caractéristiques
• C10J 3/82 - Moyens d'extraction des gaz