航天炉粉煤贮罐过滤器堵煤原因分析及对策

Analysis of Causes for Coal Blocking in Filter of Pulverized Coal Storage Bunker of Hangtian Gasifier and Countermeasures

在航天炉从试车投产至稳定运行期间,多次出现粉煤贮罐过滤器锥部堵煤现象。经过逐一排查分析,发现是由于氮气吹扫管线风量较大、防雨罩结构不合理、贮罐内外温差较大导致粉煤贮罐过滤器锥部的堵煤。采取了有效的预防和整改措施后,解决了堵煤问题,保证了煤粉加压输送系统的长周期稳定运行。

In the period of the Hangtian gasifier from test run and commissioning up to stable running, coal blocks up the cone part of the filter in the bunker several times. After examination and analysis one by one it is found that the volume of nitrogen gas sweeping the pipeline is too large, the structure of the rain-proof cover is irrational, and the temperature difference between the inside and outside of the bunker is great, thus leading to coal blocking in the cone part of the filter in the bunker. Efficient prevention and rectification and reform measures are taken, the blocking is eliminated, thus guaranteeing the stable an long period operation of the pulverized coal conveyer.