Current and proposed emissions legislation is demanding
ever more stringent restrictions on the discharge and
monitoring of exhaust pollutants from industrial
Pollutant formation in a combustion process varies with
temperature, but at present there is no economical and
reliable direct method to measure this parameter.
Normally, firing temperature is derived from iterative
calculations based on the measurements from several
indirect process parameters. Due to the inherent errors
of this technique some temperature margin must be allowed
to avoid "weak extinction". Additional fueling required
to maintain adequate margins will increase pollutants and
Conventional methods for measuring and monitoring exhaust
emissions are not readily acceptable due to excessive
first cost, and more importantly the need for frequent
calibration and maintenance.
Manufacturers of sensors have been researching methods
for direct measurement of combustion temperatures and
exhaust emissions which would be both cost effective and
reliable. The objectives of this programme are to
research, manufacture and validate the operation of non
intrusive sensors to measure process temperatures within
natural gas fired lean burn combustors, and other sensors
to measure exhaust emissions. The sensor research will be
supported by a quantitative study of the combustion
process of natural gas, the results of which can be
incorporated into existing computational fluid dynamics
packages to aid the design of advanced combustors.
A further objective is to demonstrate, under realistic
operating conditions, that the outputs from the sensors
a) be utilised within an electronic management system
to regulate the combustion process and thus
b) eventually be used for "health monitoring" purposes.
The partnership comprises two industrial organisations
who manufacture sensors [Heraeus Electro Nite N.V. and
Auxitrol], supported by the expertise of two universities
[Heidelberg and Paris X} and two research centers [CNRS
E.M2.C and VITO] plus an end user of the results of the
research [Rolls Royce Industrial & Marine Gas Turbines].
The partners located in four countries of the European
Union have the expertise required to achieve a successful
conclusion to the programme, thus improving the market
and products of the three industrial partners who are
located in three different member states.
Funding SchemeCSC - Cost-sharing contracts
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