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Integrated Gasification Combined Cycle (IGCC) Technologies by Gary J. Stiegel, Ting Wang

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9

Syngas cooling in IGCC systems

Giovanni Lozza,    Politecnico di Milano, Milano, Italy

Abstract

This chapter is dedicated to the systems adopted for cooling the raw syngas, coming from the gasifier, to the temperature level required for an effective removal of various contaminants (ash, sulphur, etc.). A significant fraction of the input heat (feedstock heating value) is handled in the cooling process (15–20%): its proper utilization for power production is a key factor affecting the overall plant efficiency. In addition, relevant equipment such as high-temperature heat exchangers (syngas coolers) are used, greatly influencing the investment cost and the plant availability. The discussion about the impact of the cooling process on the ...

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