Types of photoreactors
Get an overview of our products
Photoreactors for different applications
Discover the advantages and differences
On our product overview page you will find a wide range of state-of-the-art photoreactors that have been specially developed for different applications and processes. The side-loop photoreactor impresses with its efficiency in continuous processes, while the falling-film photoreactor is ideal for large-area light absorption. For versatile applications, the agitated photoreactor offers optimum flexibility thanks to integrated mixing functions. The Plug-Flow-Tube photoreactor stands for precise control of flow and reaction time. Particularly noteworthy are our new flat-bed photoreactors, which set new standards with their space-saving design and maximum efficiency. Discover which reactor type perfectly suits your requirements and benefit from our expertise in photochemistry.
Side-Loop Photoreactors
for continuous circulation
A side-loop photoreactor is a type of reactor used in the field of photochemistry to carry out light-induced chemical reactions. It consists of a looped tubing system where the reaction mixture is continuously circulated through a light source, allowing for efficient exposure to light.
Side-loop photoreactors are commonly used in applications such as photocatalysis, photodegradation of pollutants, and photopolymerization. They are particularly useful for reactions that require precise control over the intensity and duration of light exposure, as well as for scaling up reactions from laboratory to industrial scale.
Overall, side-loop photoreactors offer a versatile and efficient way to harness the power of light in various chemical processes, making them valuable tools in research and industrial applications.
Falling-Film Photoreactors
for various chemical processes
A falling-film photoreactor is a specialized type of reactor used in various chemical processes, particularly those involving photochemical reactions. In this system, a thin film of liquid flows down the walls of a reactor chamber while being exposed to light, typically from UV or visible sources. This design maximizes the surface area for light absorption and enhances mass transfer between the liquid film and any gaseous reactants, leading to improved reaction efficiency.
Falling-film photoreactors are commonly utilized in applications such as wastewater treatment or in the production of fine chemicals and pharmaceuticals. Overall, the falling-film photoreactor stands out for its ability to enhance reaction rates and product yields while maintaining efficient heat and mass transfer, making it a valuable tool in both industrial and research settings.
Agitated Photoreactors
for high and low viscosity
An Agitated Photoreactor is a reactor system that utilizes light energy for photochemical reactions using continuous or intermittent agitation to keep the reaction mixture well mixed. The agitation ensures that the reaction medium is evenly distributed, resulting in better heat and light absorption and a homogeneous reaction. These reactors often consist of a closed container in which the light is irradiated by special lamp sources such as UV lamps or LEDs.
Stirred photoreactors are used in processes where a uniform distribution of reaction components and a controlled reaction rate are required. They are particularly useful for chemical syntheses involving light-dependent reactions, such as in photocatalysis or water treatment. In industry, they are often used for the production of chemicals, environmental purification or the production of pharmaceuticals.
The main advantage of a stirred photoreactor is the flexibility to control the stirring speed and illumination to achieve optimal reaction conditions. Thanks to their good controllability and efficiency, they are very popular in research and pilot production. Stirred photoreactors also offer high repeatability and are suitable for small to medium production volumes.
Plug-Flow Tube Photoreactors
operate continuously
A plug-flow photoreactor (PFR) is a special chemical reactor that uses light to carry out photochemical reactions efficiently. It is characterized by a continuous flow of the reaction medium in which the fluids move like 'plugs' without any significant back-mixing. The reactor geometry, often tubular or pipe-shaped, maximizes the uniform irradiation of the medium along the flow. Typical light sources are LED lights, lasers or UV lamps, which are specifically adapted for the desired reaction.
The plug-flow nature enables precise control of the residence time, allowing reactions to proceed more efficiently. Compared to other photoreactors, it offers high reproducibility and scalability. It is frequently used in chemical synthesis, environmental technology and biotechnology.
One advantage is the optimal use of light energy, as the entire reaction mixture is exposed to the light source in a controlled manner. Plug-flow photoreactors are increasingly being developed for sustainable processes as they offer high energy efficiency. Their design is constantly being further developed to open up new applications in research and industry.
Flat-Bed Photoreactors
for chemical and biotechnological industry
Oscillatory flow photoreactors are characterized by the generated flow, which oscillates periodically to improve the mixing of the reaction medium. These oscillating flows increase the efficiency of light utilization and prevent the formation of 'dead' space where no reaction takes place. They are mainly used in processes that require uniform irradiation and efficient reaction distribution, such as photocatalysis or water treatment.
Flatbed photoreactors use a flat reactor surface on which the reaction medium flows in thin layers. These reactors are particularly suitable for processes where constant and uniform illumination is required, as the light is directed straight onto the flat surface. They are often used in environmental technology, for example in waste water treatment and photobioreactor technology.
Both reactors enable high light output and effective control of reaction conditions. Oscillating flow photoreactors are particularly preferred for difficult reaction processes, while flat-bed photoreactors are widely used in industrial applications due to their simple structure and handling.
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