Char and soot characterization was performed on samples obtained from pilot-scale entrained flow gasification of coal bio-oil slurry (CBS) and coal/water slurry (CWS) at different operating conditions. The compositions and gasification reactivity of char and soot have been investigated to reveal the difference of CBS and CWS slurries. The results show that both char and soot obtained from CBS gasification contain alkali and alkaline earth metals which come from the bio-oil. These CBS char and soot alkali-containing samples exhibit higher gasification reactivity than those from CWS gasification. For CBS gasification, soot has higher gasification reactivity compared with char. The gasification reactivity may be caused by the catalytic effect of KCl and K₂SO₄ existing in char and soot. The reactivity of char and soot is also influenced by the gasification conditions (such as H₂O/C ratio), and high CO₂ gasification reactivity is observed for chars exposed to high H₂O/C ratios in the entrained flow reactor.

中文翻译：

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煤生物油煤浆气流床气化过程中固体残留物的表征

在不同操作条件下，对从煤生物油浆（CBS）和煤/水浆（CWS）的中试夹带流化气化获得的样品进行了炭和烟灰表征。已经研究了焦炭和烟灰的组成和气化反应性，以揭示CBS和CWS浆料的差异。结果表明，CBS气化制得的焦炭和煤烟均含有来自生物油的碱金属和碱土金属。这些CBS焦炭和烟灰含碱样品显示出比CWS气化更高的气化反应性。对于CBS气化，烟灰与炭相比具有更高的气化反应性。气化反应性可能是由KCl和K ₂ SO ₄的催化作用引起的存在于炭黑和烟灰中。炭和烟灰的反应性还受气化条件（例如H ₂ O / C比）的影响，并且在夹带流动反应器中，对于暴露于高H ₂ O / C比的炭，观察到高的CO ₂气化反应性。