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    • 3. 发明授权
    • Gasification process for carbonaceous materials
    • 碳质材料的气化过程
    • US4444569A
    • 1984-04-24
    • US457855
    • 1983-01-14
    • John C. Haas
    • John C. Haas
    • C10J3/12C10J3/46C10J3/54
    • C10J3/54C10J3/12C10J3/466C10J2300/0993
    • A carbonaceous material, such as coal, is gasified in a vertically elongated reaction vessel having a lower portion, an upper portion, and a re-entrainment zone which is located above the upper portion. The effective diameter of the upper portion of the vessel is larger than that of the lower portion of the vessel and the re-entrainment zone. A gasification agent is passed upwardly through the vessel at a rate sufficient to entrain the coal and fluidize a heat-transfer material in the lower portion of the vessel. The gasification agent reacts with the coal to form a hot char and a gaseous product, with the necessary heat being supplied by the heat-transfer material. In this process, the heat-transfer material substantially flows downwardly in the reaction vessel, in a fluidized state or an unfluidized state through the upper portion of the vessel and in a fluidized state through the lower portion of the vessel. The coal substantially flows upwardly in the reaction vessel, in an entrained state through the lower portion of the vessel and the re-entrainment zone, and in a fluidized state through the upper portion of the vessel. An advantage of this process is that the upper portion serves to increase the residence time of the carbonaceous solids in the reaction vessel thereby increasing yields and lowering the average height of the reaction vessel, and the sensible heat is extracted from the product gas before it leaves the reactor.
    • 诸如煤的碳质材料在具有位于上部上方的下部,上部和再夹带区的垂直伸长的反应容器中气化。 容器上部的有效直径大于容器下部和再夹带区的有效直径。 气化剂以足以夹带煤并将热传递材料流体流入容器下部的速率向上通过容器。 气化剂与煤反应形成热炭和气态产物,所需热量由传热材料供应。 在该方法中,传热材料在反应容器中基本上以流化状态或非流动状态向下流过容器的上部,并以流化状态流过容器的下部。 煤在反应容器中基本上向上流动,夹带状态通过容器的下部和再夹带区,并以流化状态流过容器的上部。 该方法的优点是上部用于增加碳质固体在反应容器中的停留时间,从而增加反应容器的产量并降低其平均高度,并且在产物气体离开之前从产物气体中提取显热 反应堆。