A chemical reactor is a vessel designed to facilitate chemical reactions. It provides the necessary environment for reactants to interact, often involving heat, pressure, and catalysts. Reactors can vary in size and design, depending on the specific reaction and desired output, and are commonly used in industries such as pharmaceuticals, petrochemicals, and food processing. There are several types of chemical reactors, including batch reactors, continuous reactors, and plug flow reactors. Each type has its advantages and is chosen based on factors like reaction time, efficiency, and scalability. Proper design and operation of chemical reactors are crucial for optimizing production and ensuring safety.