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煤的結渣性測定步驟

发布时间：2012-05-17 点击次数：1212次

1、將煤樣進行充分混合，量取400cm³試樣並稱重（稱准到0.01g），其後測定用的度樣質量與第一次相同。

2、稱取15g木炭，放在帶孔鐵鏟內在電爐上加熱到灼紅。

3、將稱重後的度樣倒入氣化套內扒平，將墊圈裝在空氣室和煙氣室之間，用鎖緊螺簡固緊。

4、启动鼓风机，调节空气针阀、使空气流量不超过2 m/h .打开顶盖，用铁漏斗将灼红的木炭倒在试样表面上，取下铁漏斗扒平煤样。拧紧机盖，仔细调节空气流量，使其达到规定值，开始记时。

要進行鼓風強度爲0.2m/h和0.3m/h測定時，應先使風量在2m³/h下保持3min，然後再調節到規定值。

5、在測定過程中，隨時觀察空氣流量是否偏離規定值，並及時調整。從與測壓孔相接的壓力計讀出料層最大阻力，並記錄。

6、當從觀察孔觀察到試樣燃盡後，並閉鼓風機。記錄反應時間。

7、冷卻後取出全部灰渣稱其質量。

8、将6 mm筛子彽盘叠在一起，置于振筛机上，然后把称重后的灰渣移到6mm筛子内，盖好筛盖。

9、啓動振動篩機振動30s，然後稱出粒度大于6mm渣塊的質量。

10、每个试样在0.1m/s 0.2m/s和0.3m/s 3种鼓风强度下分别进行重复测定。对应于0.1m/s、0.2m/s、0.3m/s流速的空气流量分别为2m³/h、4m³/h、6m³/h。

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