Development of the adsorbent for heat storage system using iron and steel making slag as source material

使用水蒸汽吸收到沸石材料的热存储系统得到了很大的注意，因为过程中的极高能量密度和灵活性。The composition of zeolite A can be shown as M_XAl_XSi_<1-X>·nH_O. Zeolite A的羟基特性是由于Zeolite A中的高铝/硅化而产生的优越性。燃烧炉渣主要考虑SiO_2、Al_2O_3、CaO和MgO的因素。自从钙和镁就被引入沸石A的水平，而爆破炉slag是沸石A的源材料的一个候选人。在目前的工作中，用于生产沸石A的碱性羟基过程作为一种来源材料被调查。以下结果已获得; 1.沸石可以用高温处理方法从SiO_2-Al_2O_3-CaO合成污泥;温度： 328- 393 NaOH： 0.5-3 MNaOH溶液：污泥（资料来源）：15 （Mug）2.Zeolite A合成由水热过程一般稳定至873K.3，在订购从Zeolite A从燃烧炉渣中产生水热过程，对成分的调整是必要的。这是必要的，以减少燃烧炉渣中CaO+MgO的含量。少于CaO+MgO的含量，更多的Zeolite A到水合成后总产品的比率.4.使用球-磨坊类型室的羟基反应的比率增加了.5.被确认为，在目前的工作中发现的Zeolite A是适用于热存储系统，因为内热反应被观察到在Zeolite A的加热期间。

The heat storage system using water vapor adsorption to zeolite materials is getting much attention because of extremely high energy density and flexibility of process. The composition of zeolite A can be shown as M_XAl_XSi_<1-X>・nH_O. The hydrophiic property of zeolite A is excellent because of high Al/Si ration in the zeolite A. The blast furnace slag mainly consists of SiO_2, Al_2O_3, CaO and MgO. Since Ca and Mg can be introduced to zeolite A as M, the blast furnace slag is a promising candidate for source materials of zeolite A. In the present work, the alkali hydrothermal process for production of zeolite A from the blast furnace slag as a source material was investigated. The following results were obtained;1.Zeolite A can be synthesized from SiO_2-Al_2O_3-CaO slag by hydrothermal treatment in the conditions;Temperature: 328-393NaOH: 0.5-3 MNaOH solution : slag (source material): 15 (mug)2.The zeolite A synthesized by the hydrothermal process was thermally stable up to 873 K.3.In order to obtain zeolite A from blast furnace slag in the hydrothermal process, the adjustment of composition was needed. It was required to decrease the content of CaO+MgO in the blast furnace slag. The less the content of CaO+MgO, The more the ratio of zeolite A to total products after hydrothermal synthesis.4.The rate of the hydrothermal reaction increased by using the ball-mill-type chamber.5.It was confirmed that the zeolite A obtained in the present work was applicable to the heat storage system because endothermic reaction was observed during the heating of the zeolite A.