PLR-CTPR Flow Phase Photocatalytic Reaction System innovatively introduces ultrasonic atomization technology, significantly enhancing mass transfer efficiency in reactions. Taking photocatalytic methane oxidation reaction as an example, the raw gases CH₄ and O₂ are mixed at a certain flow rate and then passed through an atomization chamber where water mist is blown into the reactor for the reaction. After passing through the catalyst bed, the mixture enters a gas-liquid separator, where oxygen-containing products and water condense and flow out as liquid, while gaseous products and unreacted gases are sampled and detected through a gas chromatography sampling valve.
PLR-CTPR Flow Phase Photocatalytic Reaction System is suitable for all gas-solid reactions involving water, and can be used not only for photocatalytic methane oxidation reactions, but also for photocatalytic CO₂ reactions, photocatalytic nitrogen oxides oxidation reactions, and other flow phase reactions.
PLR-CTPR Flow Phase Photocatalytic Reaction System consists of control unit, gas path unit, atomization unit, reaction unit, condenser, and gas-liquid separator, among other components.
Control unit mainly controls the MFC flow rate and the amount of mist generated by the atomizer, which is adjustable; all operations are conducted on a capacitive touchscreen that can be flexibly rotated for easy operation. It is equipped with a built-in methane sensor that promptly alarms and shuts off the gas path in case of gas leakage, ensuring safety during use; Gas path unit controls the flow rates and volumes of three gases (CH₄, O₂, Ar); Atomization unit employs a multi-head ultrasonic atomization method to ensure that droplet sizes are sufficiently small and the atomization amount is large enough. The atomization chamber is reserved with a water replenishment port for refilling water with a syringe, and the atomization head is a consumable; Reaction unit features a split structure, with a catalyst membrane layer (supported by a quartz fiber filter membrane) clamped between the upper and lower chambers to ensure that gas and water mist pass completely through the catalyst bed. The gas-liquid separator is used for product separation and collection.
Key Features
• The use of ultrasonic atomization transforms liquid into small droplets, increasing the three-phase contact interface and enhancing the likelihood of contact between the liquid and solid catalyst, thereby improving mass transfer efficiency in reactions;
• The outer layer of the atomization chamber has a water cooling temperature control layer to reduce the temperature rise of water caused by ultrasound, preventing water vaporization;
• The small droplets generated after atomization reach the catalyst surface simultaneously with the airflow for three-phase interfacial reactions;
• The reactor employs a penetrating reaction mode, ensuring sufficient contact between gas, mist, and catalyst, thus enhancing mass transfer efficiency.
