The High Pressure Oxy-fuel combustion facility (HIPROX) is a pressurized combustion rig for the study of combustion in oxy-fuel atmospheres, i.e. CO2 and O2 oxidizers. The combustion chamber is particularly suited for gas turbine type combustion systems, where the gas streams can be distributed between primary and dilution zones. The defined power load with methane or natural gas as fuel is 125 kW at 10 bar with pre-heating of CO2 up to 300 C at 90 g/s. The installation can also be operated with air which can be heated up to 400 C at 150 g/s. The flexibility of the installation is such as custom design burner can be adapted to the pressurized unit, allowing external users to bring a burner provided it has been followed our construction specifications and necessary approval. The fixed monitoring of the unit is composed of dynamic pressure and static pressure, heat flux probe, internal chamber wall temperature, exit gas temperature, and an averaging sampling probe that can be coupled with conventional gas analyzers or FTIR unit. In addition, four sides optical accesses around the flame zone allows for combustion radicals chemiluminescence imaging and flame monitoring.
HIPROX has the possibility of using one stream of pure oxygen and 2 streams of pure CO2 at controlled mass flow and pre-heat temperature in a pressurized environment, and offers flexibility in the gas streams management. In addition it has two individually controlled fuel lines. When coupled with the FTIR instrument, there is possible to measure several species simultaneously. The facility is particularly well suited for combustion studies with gas mixtures that can be found in oxy-fuel combustion processes and able to monitor all parameters necessary for the operation of a gas turbine engine.
The HIPROX infrastructure offers assessment of the general combustion performance of oxy-fuel related processes, through the measurements of pollutants emissions or impurities, flame stability, thermo-acoustic instabilities, and in-chamber heat transfer. The parameters that can be easily varied are the CO2 and oxygen distribution, individual stream temperature, and the conventional combustion parameters (power, equivalence ratio).