One of the main features of the modern Industrial High Temperature Processes (IHTP) are severe requirements for on-line control of production quality, process stability and safety.
The main achievements of the present Project are:
-- Industrial type diagnostic system for temperature monitoring and control of flame (combustion product) and condensed matter allowing to solve the following technological problems:
- oxy-combustion furnaces: air replacement by O2 in combustion, gas flow rate decrease, hot spots elimination;- domestic air burners: decrease of toxic component emission (NOx, CO), burner design optimisation;
- laser welding in aerospace industry: reduce the number of quality inspection and repair ratio after welding of titanium alloy TA6V and stainless steel;
- plasma cladding: eliminate rejection of expensive cladded parts caused by process instability; improvement of functional properties of cladded layers (dilution, microhardness);
- waste treatment by plasma torch: limit heavy metal emission and achieve required glass composition and structure stability;
Diagnostic system includes Gas Phase Pyrometer (temperature range 600-2500 C, spectral range 2-4.3 µm, sampling time 20 ms) and Multiwavelength Pyrometer (temperature range 1000-3000 C, spectral range 1-1.7 µm, sampling time 15-1000 µs).
-- Special optical fibre accessories (pyrometer heads, water cooled probe, objectives, Infra Red fibres and mounting mechanical systems) providing:
- radiance signal telemetry of any required area in industrial installation (internal furnace or burner volume, waste melt pool, cladding or spraying zone, weld seam);
ong term stability of optical elements under hostile industrial conditions (heating, dust, water condensation, etc.)
Advance InGaAs photodetector (24 elements Linear Array, two-stage thermoelectric cooling element, specially designed cooled package, spectral range 0.9-1.7 µm)
-- Simplified model of:
- domestic air burner (empirical model based on collected experimental data on burner operation);
oxy-combustion furnace (PC software based on radiance transfer model for simulation of temperature fields and heat extracted flux on the furnace load).
-- Process control methodology for all end-users applications and prototype of process control system for oxy-combustion furnace containing executing elements and sensors.