A Fluidized Bed Reactor is a type of chemical reactor that uses a fluidized bed of solid particles to enhance reactions. In this setup, gas or liquid flows upward through a bed of solid particles, causing them to become suspended and behave like a fluid. This increases the contact between the reactants, improving reaction efficiency and heat transfer. These reactors are commonly used in various industrial processes, including the production of fuels and chemicals. They offer advantages such as uniform temperature distribution and the ability to handle large volumes of materials, making them effective for processes like catalytic cracking and gasification.