Monolithic Zn–Co–Ti based sorbents for hot syngas desulfurization
作者： M. Chomiak , J. Trawczyński , Z. Blok , P. Babiński
DOI: 10.1016/J.FUPROC.2015.12.016
关键词:
摘要: Abstract Charge of monolithic Zn–Co–Ti–O based sorbent was manufactured using natural clay as a binder and tested in model hot syngas desulfurization. Fresh regenerated characterized by XRD, SEM–EDX, XPS, mercury porosimetry, TPRH 2 . After four cycles desulfurization (at 540 °C) regeneration (540–650 °C), monoliths retained the mechanical integrity their geometry did not change. Monolithic captured 5.3 g S/100 g first cycle 13.8 g S/100 g last one. Concentration H S treated gas lowered from 6000 ppmv to 3 ppmv removal efficiency min. 99.6%. contains Zn Ti 3 O 8 (dominant phase), TiO SiO , while one always occurs: ZnTiO ; 4 ZnAl Reducibility amount sulfates formed used depend on its position bed. tests, small amounts free ZnO are present surface monoliths. During zinc oxide (from Zn–Ti–O mixed oxides) reacts with Al or (clay components), forms compounds more resistant deactivation, such
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