JPWO2021067379A5 - - Google Patents

Claims (15)

A thermal condensation reactor,
a heat transfer chamber, the heat transfer chamber being a fluidized bed with a fluidized gas flow in a first direction, the heat transfer chamber comprising a plurality of heating zones maintained at different temperatures; a chamber;
a plurality of reaction tubes disposed within the heat transfer chamber in a second direction perpendicular to the fluidizing gas flow, each of the plurality of reaction tubes passing through the plurality of heating zones; A thermal condensation reactor, comprising: a plurality of reaction tubes having a reactant gas flow. The thermal condensation reactor of claim 1, wherein the fluidizing gas flow is vertical and the reactant gas flow is horizontal. The thermal condensation reactor of claim 1, further comprising a port for introducing shroud gas, wherein the shroud gas flows through a portion of each of the plurality of reaction tubes. 4. The thermal condensation reactor of claim 3, wherein the reaction gas is a mixture of vinyl chloride and trichlorosilane, and the shroud gas is silicon tetrachloride. 1 . Each of the plurality of reaction tubes is associated with a sealing gland integrated with an internal liner comprising one of graphite, carbon fiber/carbon composite, isomold graphite coated with silicon carbide, or silicon carbide. Thermal condensation reactor described in . The thermal condensation reactor according to claim 1, further comprising a bonnet for covering the gas inlets of the plurality of reaction tubes. The thermal condensation reactor according to claim 1, further comprising a floating head for covering the gas outlet ports of the plurality of reaction tubes, the floating head being movable in the second direction. 8. The thermal condensation reactor of claim 7, further comprising a cooling transition unit including the floating head, the cooling transition unit also being a fluidized bed. The thermal condensation reactor of claim 1 further comprising one or more roller supports associated with the heat transfer chamber to accommodate thermal expansion. The thermal condensation reactor of claim 1 further comprising one or more baffles disposed within the heat transfer chamber. 1. A process for producing alkenyl-functional halosilanes, comprising:
premixing an alkenyl halide and a hydride-functional halosilane to form a reactant gas;
introducing the reaction gas into a plurality of reaction tubes arranged horizontally within the fluidized bed;
passing the reactant gas through a plurality of heating zones within the fluidized bed, the plurality of heating zones being maintained at different temperatures. 12. The process of claim 11, further comprising diluting the reactant gas with a shroud gas comprising the hydride-functional halosilane and a halogenated product of hydrogen halide. 13. A process according to claim 11 or 12, wherein the alkenyl halide is vinyl chloride. The hydride-functional halosilane has the formula R _w H _x SiX _(4-w-x) , where the subscript w is from 0 to 2 and the subscript x is from 1 to 3. and the amount (w+x) is from 1 to 3, each R is an independently selected monovalent hydrocarbon group of 1 to 18 carbon atoms without aliphatic unsaturation, and each 13. A process according to claim 11 or 12 , wherein are independently selected halogen atoms. 15. The process of claim 14, wherein the hydrido-functional halosilane is trichlorosilane.