Induction-heated reactors for gas phase catalyzed reactions
AssigneeInvista North America S.A R.L.
InventorsBenny E. Blackwell, Cynthia K. Fallon, Gregory S. Kirby, Mehrdad Mehdizadeh, Theodore Augur Koch, Carmo Joseph Pereira, Sourav K. Sengupta
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Abstract
Elevated temperature, gas-phase, catalyzed processes for preparing HCN in which induction heating is used as a source of energy, and novel apparatus for carrying out said processes.
Claims27
An apparatus for conducting elevated temperature, gas phase, catalyzed chemical reaction for the preparation of HCN comprising:
- a reaction chamber comprised of a substantially gas-impermeable electrically non-conductive material,
- a hollow cylindrically shaped electrically conductive and gas-permeable catalyst/susceptor having a substantially annular-shaped cross-section, said catalyst/susceptor being positioned within said reaction chamber and surrounding an electrically non-conductive cylinder,
- said catalyst/susceptor being surrounded by an induction coil energizable by a power source capable of supplying alternating current,
- said catalyst/susceptor being inductively heatable by an alternating magnetic field produced by said induction coil to a temperature sufficient to effect the chemical reaction.
A process for the preparation of HCN which comprises passing ammonia and a gaseous hydrocarbon having 1 to 6 carbon atoms through a catalyst structure comprising a substantially cylindrical electrically conductive and gas-permeable catalytic platinum group metal catalyst/susceptor, said catalyst/susceptor being hollow and surrounding an electrically non-conductive cylinder, said catalyst/susceptor having continuous electrical conduction paths around its circumference in the plane normal to the axis of said circumference, and being heated by an induction heating coil at a frequency between 50 Hz to 30 MHz to a temperature sufficient to effect reaction of said reactants, said cylindrical catalyst/susceptor having sufficient bulk electrical resistivity to have sufficient induction heating efficiency to promote catalytic activity.
Dependencies are inferred from the claim text.