摘要:
The plant is provided with a first rotary reactor (2) where the balls of urea cyanurate are formed and a second reactor (8) where the pyrolysis takes place. The first reactor (2) is provided with an internal helical fin (4) and the second reactor (8) is also rotary. At the exit thereof there is a communication tube (12) placing it in communication with a solids separator vessel (14) which receives an aqueous solution capable of reaching a working level, below which there is the access port (20) of the tube (12) to the vessel (14). The vessel is provided with a lower drain valve (26) and an upper gas exhaust tube (22).
摘要:
In a process for the microsuspension or emulsion polymerization of vinyl chloride using a polymerization apparatus equipped with an agitator the improvement where the ratio (H/D) of the effective height (H) of the apparatus to the effective inner diameter (D) of the apparatus is 4 or more.
摘要:
L'invention concerne un procédé de production d'un gaz de synthèse par mise en oeuvre de la réaction de gaz à l'eau inverse (RWGS) selon laquelle un mélange gazeux comprenant du dioxyde de carbone et de l'hydrogène est mis en contact avec un catalyseur, le catalyseur comprenant une phase active en alliage de fer, de cérium et d'argent (Fe-Ce-Ag) et le cas échéant contenant du cuivre (Fe-Ce-Ag-Cu), et un support à base d'alumine, en zéolite, en oxyde de zirconium (ZrO2) ou en silice (SiO2), dans lequel la phase active est imprégnée, les constituants de la phase active ayant les pourcentages en masse suivants:
摘要:
A reactor (100) includes a plurality of reaction side flow passages (210) through which a reaction fluid flows, a catalyst (catalyst structure) disposed inside the reaction side flow passages (210) to accelerate the reaction of the reaction fluid, a plurality of heat medium side flow passages (220) which is alternately stacked with the reaction side flow passages (210), and through which a heat medium flows, and a suppression flow passage (250) which is disposed adjacent to a surface of the reaction side flow passage (210), the heat medium side flow passages (220) being not stacked on the surface, and through which flows a suppression fluid suppressing the heat dissipation to the outside from the reaction fluid flowing through the reaction side flow passage (210), or the heat transfer from the outside to the reaction fluid.
摘要:
The present invention relates to a specific method, to a particularly advantageous device therefor and to the use thereof for producing pure organosilanes having unsaturated organic radicals from the group acryloxyalkyl- or methacryloxy-alkyltrialkoxysilane, in particular from 3-methacryloxy-propyltrimethoxysilane (MEMO), by hydrosilylation of allyl acrylate or allyl methacrylate with trialkoxysilane in the presence of a homogeneous Pt(IV) catalyst and of a specific stabiliser system, and work-up by distillation of the raw product, the pure product being obtained by targeted extraction from the side of the rectification column with monitoring of temperature and pressure.