Catalyst regenerator

A catalyst regenerator for regenerating a coked catalyst separated from a product produced in an endothermic catalytic reaction of a fluidized bed reactor, comprising:

• a reaction chamber including a regeneration space, the reaction chamber configured to receive the coked catalyst from a standpipe connected to the regeneration space, and discharge a regenerated catalyst to an outlet;
• a fuel supplier connected to the reaction chamber to inject a fuel for combustion into the regeneration space;
• and
• an air supplier connected to the reaction chamber to inject air for combustion into the regeneration space,
• wherein
• the fuel injected from the fuel supplier is a reformed fuel containing hydrogen and carbon monoxide,
• the fuel supplier includes a liquid fuel reformer that is connected to the reaction chamber to generate a reformed gas including hydrogen, carbon monoxide, and solid carbon by partial oxidation of liquid fuel and supply it to the regeneration space, and
• the liquid fuel reformer includes
• a housing connected to the reaction chamber,
• a lean combustion zone in which a first hot gas flow is formed with a first liquid fuel and first air supplied from one side of the housing, and
• a rich combustion zone in which a second hot gas flow is formed with a second liquid fuel supplied through a fuel supply pipe installed inside the lean combustion zone.

A catalyst regenerator for regenerating a coked catalyst separated from a product produced in an endothermic catalytic reaction of a fluidized bed reactor, comprising:

• a reaction chamber including a regeneration space, the reaction chamber configured to receive the coked catalyst from a standpipe connected to the regeneration space, and discharge a regenerated catalyst to an outlet;
• a fuel supplier connected to the reaction chamber to inject a fuel for combustion into the regeneration space;
• and
• an air supplier connected to the reaction chamber to inject air for combustion into the regeneration space,
• wherein
• the fuel injected from the fuel supplier is a reformed fuel containing hydrogen and carbon monoxide,
• the air supplier includes an air distribution ring supplied with the air and an air nozzle formed in the air distribution ring,
• the fuel supplier includes a fuel distribution ring supplied with the fuel and disposed to be adjacent to the air distribution ring and a fuel injection port formed in the fuel distribution ring
• the outlet is installed at a predetermined height from a bottom of the reaction chamber,
• the regeneration space includes a catalyst dense zone set at a lower height than the outlet and a catalyst lean zone set at an upper side of the outlet, and
• the catalyst regenerator further comprises a pre-mixer provided with a pre-mixing zone that is disposed in the catalyst dense zone and pre-mixes a fuel supplied from the fuel supplier and air supplied from the air supplier.