Corella José, Toledo José M, Molina Gregorio
Department of Chemical Engineering, Faculty of Chemistry, University Complutense of Madrid, 28040 Madrid, Spain.
Bioresour Technol. 2008 Nov;99(16):7539-44. doi: 10.1016/j.biortech.2008.02.018. Epub 2008 Mar 26.
Calcined limestone (CaO) and calcined dolomite (CaO.MgO) were tested at bench scale to study their usefulness in cleaning hot raw gas from a fluidized bed gasifier of a synthetic or simulated refuse-derived fuel (RDF) with a high (3 wt%) content in chlorine. In the gas cleaning reactor two main reactions occurred simultaneously: the elimination of HCl and the elimination of tar by steam reforming. The elimination of HCl formed CaCl2 and MgCl2 with melting points below the high (above 800 degrees C) temperatures required for the simultaneous tar elimination reaction. So, the CaO-based particles progressively melted and the catalytic gas cleaning reactor became a compact, agglomerated or glued, cake. Therefore, the life and usefulness of the CaO-based solids used was very low. Nevertheless, and to further avoid these problems, some positive guidelines for future research are proposed here.
对煅烧石灰石（CaO）和煅烧白云石（CaO.MgO）进行了实验室规模的测试，以研究它们在净化来自合成或模拟垃圾衍生燃料（RDF）流化床气化炉的热原料气方面的效用，该热原料气中氯含量较高（3 wt%）。在气体净化反应器中，两个主要反应同时发生：HCl的去除和通过蒸汽重整去除焦油。HCl的去除形成了熔点低于同时进行焦油去除反应所需的高温（800摄氏度以上）的CaCl2和MgCl2。因此，基于CaO的颗粒逐渐熔化，催化气体净化反应器变成了一个紧凑的、团聚的或胶合的饼状物。所以，所使用的基于CaO的固体的寿命和效用非常低。然而，为了进一步避免这些问题，本文提出了一些未来研究的积极指导方针。
