In order to obtain the expected sand cooling and humidifying effect, requiring sand in the boilingbed to flow in uniform.
为使型砂获得预期的冷却和增湿效果，要求型砂在沸腾床上均匀的流动。
2
The invention discloses a catalyst carrier for coal liquification oil hydrogenation on boilingbed and the preparation method.
本发明公开了一种煤液化油沸腾床加氢处理催化剂载体及其制备方法。
3
According the special feature of boiling boiler. We try to find out a new controll method. In this paper, the given temperature value of boilingbed is explained in detail.