The work program covers the development of dynamic measurement techniques, with a response time of about 10 seconds, for the major gas components, produced by coal gasifiers. One approach is on-line ex-situ analysis of the gas sample by mass spectrometry or by spontaneous Raman spectroscopy. The other approach is in-situ gas analysis using solid electrolyte based sensors.
The work to be performed consists of three parts, namely :
A) Preliminary study :Identification of measuring locations for several coal gasification processes; ranges in process conditions for coal gasification processes; definition of target specifications.
B1) Sampling and analysis system: Specification of mass spectrometry and spontaneous Raman spectroscopy; making a choice between these two techniques for further research; laboratory experiments with synthetic gas; inventory of sampling problems; selection of construction materials; design and final construction of sampling procedures/system; testing of prototype in non-aggressive high pressure environment.
B2) Sensor development: Synthesis and electrical characterisation of candidate proton conducting materials; compatibility tests of these materials in simulated gas atmospheres; adaption and testing of commercial oxygen sensors in simulated gas atmospheres; selection of suitable reference systems; realisation of ceramic-ceramic and ceramic-metal joints and compatibility tests; realisation and in-situ testing of porous ceramic protection; construction of prototype high pressure hydrogen sensors; testing of prototype sensors (in simulated gas atmosphere and in non-aggressive high pressure systems);in-situ testing of prototype sensors.
C) Testing of both the sampling and gas analysis system (ex-situ) and of the electrolyte based sensor system (in-situ) in an actual environment.
Funding SchemeCSC - Cost-sharing contracts
2628 BL Delft