Chemical engineering research and process development involves testing reactions, catalysts, and separation technologies under precisely controlled gas conditions. Dynamic gas mixing provides the defined reactant compositions and the ability to vary them systematically, which is essential for kinetic measurements, catalyst evaluation, and process scale-up.
Catalysis and Reaction Engineering
Testing catalytic materials requires precise control of reactant concentrations, space velocity, and temperature, with the ability to step through a range of feed compositions to measure activity and selectivity. Reaction mechanism studies require varying one component while holding others constant, which is only possible with dynamic mixing. Kinetic modelling depends on these systematic datasets.
Process Optimization
Lab-scale study of industrial processes, including ammonia synthesis, methanol production, and Fischer-Tropsch synthesis, uses defined gas compositions at reactor inlet and measures outlet composition and conversion. Optimizing feed ratios and operating conditions requires the ability to change gas composition between runs or during a run without manual cylinder changes.
Gas Separation and Purification
Membrane permeability and selectivity depend on feed gas composition and humidity. Testing separation membranes under controlled mixed-gas feeds, at defined partial pressures, provides data that single-component tests miss due to competitive adsorption and swelling effects. Adsorption processes for gas purification are similarly evaluated under realistic mixed feeds.
Environmental Engineering
Emission control technologies including SCR, scrubbing, and catalytic oxidation are tested against simulated flue gas streams at defined concentrations of NOx, SOx, CO2, and moisture. Carbon capture sorbents and membranes are evaluated under flue gas compositions representative of the industrial source they are designed for.
Fuel and Energy Production
Hydrogen production processes, including steam methane reforming and water-gas shift, are studied at lab scale with controlled feed compositions. Biofuel production by gasification or fermentation requires controlled gas atmospheres over the catalyst or culture. Fuel cell testing, covered in detail on the Energy Research page, requires precise H2, air, and humidity control.
Safety and Hazard Management
Flammability limits, explosion hazards, and toxic threshold measurements require generating gas mixtures at defined concentrations near hazardous thresholds. Gas leak detection systems and alarm instruments are calibrated against known challenge gas concentrations generated by a dynamic mixer from a certified parent standard.
