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Title:
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Bench-scale testing of HT fuel gas cleaning concepts
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Author(s):
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Published by:
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Publication date:
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ECN
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1-11-1998
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ECN report number:
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Document type:
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ECN-C--98-078
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ECN publication
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Number of pages:
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Full text:
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51
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Download PDF
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Abstract:
ECN has been involved in the development of dedicated processes for theremoval of sulphur compounds, halogen compounds, and nitrogen compounds.
These processes can be characterised as dry processes where the contaminants
are removed either by absorbing them into a solid sorbent material (sulphur
and halogen compounds) or converting them catalytically into harmless species
(nitrogen compounds). These processes basically consist of a suitable
sorbent/catalyst and a reactor-concept, which are strongly interrelated.
Therefore, a crucial step in the process development, subsequent to basic
sorbent/catalyst development, is the evaluation and testing of the
combination sorbent/catalyst - reactor type. To enable this, a bench-scale
facility has been designed and constructed at ECN, the so-called ERECON-plant
(a bench-scale plant for the Evaluation of REactor CONcepts). The
ERECON-plant has been designed as a multi-purpose facility to test various
high temperature gas cleaning processes, and therefore, it has been equipped
with three separate reactor-sections, viz. a moving-bed, a
bubbling-fluidised-bed and a riser section. The moving-bed section can also
be operated as a fixed-bed reactor. In this report, the design and
construction of the ERECON-plant are described. In addition, the application
of the ERECON-plant for the development of two HTGC processes, viz. a
desulphurisation process based on a supported iron oxide / molybdenum oxide
sorbent and a process for halogen removal, is elucidated. In Chapter 2, the
main features of these processes are presented. Next, in Chapter 3, the
requirements for a proper bench-scale testing of these processes are
explicated, which formed the basis for the ERECON-plant design. Details of
the final ERECON-plant design are given in Chapter 4, while in the two
subsequent chapters (5 and 6) results of the first bench-scale tests in the
ERECON-plant are presented. Finally, conclusions are drawn about the
ERECON-plant for bench-scale testing of HT fuel gas cleaning processes, the
possibilities of the two processes tested and the prospects of HT fuel gas
cleaning in general. 17 refs.
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