Continuous flow reactors are systems used in chemical processes where reactants are continuously fed into the reactor and products are continuously removed. This setup allows for a steady state of operation, which can improve efficiency and control over reaction conditions compared to batch reactors. These reactors are commonly used in industries such as pharmaceuticals and petrochemicals, where consistent product quality and high throughput are essential. By maintaining a constant flow, continuous flow reactors can enhance reaction rates and reduce the time needed for production, making them a valuable tool in modern chemical engineering.