Methods and systems for re-dispersing platinum on catalysts used in continuous catalyst regeneration reformer systems are disclosed. Some aspects of the disclosure provide, for example, methods of evaluating the platinum re-dispersion of a reforming catalyst in a small-scale reactor for use in a continuous catalyst regeneration reformer system and methods of improving the activity and selectivity of reforming catalysts for use in a continuous catalyst regeneration reformer system by selection of appropriate reaction parameters in a small-scale reactor for use in a continuous catalyst regeneration reformer system.

Methods and systems for re-dispersing platinum on catalysts used in continuous catalyst regeneration reformer systems are disclosed. Some aspects of the disclosure provide, for example, methods of evaluating the platinum re-dispersion of a reforming catalyst in a small-scale reactor for use in a continuous catalyst regeneration reformer system and methods of improving the activity and selectivity of reforming catalysts for use in a continuous catalyst regeneration reformer system by selection of appropriate reaction parameters in a small-scale reactor for use in a continuous catalyst regeneration reformer system.

Apparatuses and methods are provided for regenerating catalyst particles. In one embodiment, a method for regenerating catalyst particles includes passing the catalyst particles through a halogenation zone and a drying zone. The method feeds drying gas to the drying zone and passes a first portion of the drying gas from the drying zone to the halogenation zone. The method includes removing a second portion of the drying gas from the drying zone and injecting a halogen gas into the second portion of the drying gas. Further, the method includes delivering the halogen gas and the second portion of the drying gas to the halogenation zone. In the method, substantially all of the drying gas fed to the drying zone enters the halogenation zone.

Apparatuses and methods are provided for regenerating catalyst particles. In one embodiment, a method for regenerating catalyst particles includes passing the catalyst particles through a halogenation zone and a drying zone. The method feeds drying gas to the drying zone and passes a first portion of the drying gas from the drying zone to the halogenation zone. The method includes removing a second portion of the drying gas from the drying zone and injecting a halogen gas into the second portion of the drying gas. Further, the method includes delivering the halogen gas and the second portion of the drying gas to the halogenation zone. In the method, substantially all of the drying gas fed to the drying zone enters the halogenation zone.

A regenerator vessel for adsorbing halogen-containing material from a regenerator vent gas stream has a plurality of catalyst nozzles disposed at a top portion of the regenerator vessel. A first gas outlet is associated with a chlorination zone, and a second gas outlet associated with a combustion zone. A drying zone is in fluid communication with an air heater and the drying zone located in a bottom portion of the regenerator vessel. The first gas outlet is configured to withdraw a first gas stream from the chlorination zone and the second gas outlet is configured to withdraw a second gas stream from the combustion zone. The top portion of the regenerator vessel has an adsorption zone having a vent gas inlet port, a vent gas outlet port, and a portion of an annular catalyst bed.

A regenerator vessel for adsorbing halogen-containing material from a regenerator vent gas stream has a plurality of catalyst nozzles disposed at a top portion of the regenerator vessel. A first gas outlet is associated with a chlorination zone, and a second gas outlet associated with a combustion zone. A drying zone is in fluid communication with an air heater and the drying zone located in a bottom portion of the regenerator vessel. The first gas outlet is configured to withdraw a first gas stream from the chlorination zone and the second gas outlet is configured to withdraw a second gas stream from the combustion zone. The top portion of the regenerator vessel has an adsorption zone having a vent gas inlet port, a vent gas outlet port, and a portion of an annular catalyst bed.

The invention relates to polyoxometalates represented by the formula (A.sub.n).sub.m+{[M.sub.6(O.sub.2).sub.9][(XM′.sub.10O.sub.37).sub.3]}.sup.m− or solvates thereof, corresponding supported polyoxometalates, and processes for their preparation, as well as their use in oxidative conversion of organic substrate.

The invention relates to polyoxometalates represented by the formula (A.sub.n).sub.m+{[M.sub.6(O.sub.2).sub.9][(XM′.sub.10O.sub.37).sub.3]}.sup.m− or solvates thereof, corresponding supported polyoxometalates, and processes for their preparation, as well as their use in oxidative conversion of organic substrate.

A regenerator vessel for adsorbing halogen-containing material from a regenerator vent gas stream has a plurality of catalyst nozzles disposed at a top portion of the regenerator vessel. A first gas outlet is associated with a chlorination zone, and a second gas outlet associated with a combustion zone. A drying zone is in fluid communication with an air heater and the drying zone located in a bottom portion of the regenerator vessel. The first gas outlet is configured to withdraw a first gas stream from the chlorination zone and the second gas outlet is configured to withdraw a second gas stream from the combustion zone. The top portion of the regenerator vessel has an adsorption zone having a vent gas inlet port, a vent gas outlet port, and a portion of an annular catalyst bed.

A regenerator vessel for adsorbing halogen-containing material from a regenerator vent gas stream has a plurality of catalyst nozzles disposed at a top portion of the regenerator vessel. A first gas outlet is associated with a chlorination zone, and a second gas outlet associated with a combustion zone. A drying zone is in fluid communication with an air heater and the drying zone located in a bottom portion of the regenerator vessel. The first gas outlet is configured to withdraw a first gas stream from the chlorination zone and the second gas outlet is configured to withdraw a second gas stream from the combustion zone. The top portion of the regenerator vessel has an adsorption zone having a vent gas inlet port, a vent gas outlet port, and a portion of an annular catalyst bed.