How to deal with large frozen coal clumps in coal storage bins during winter in the northeast
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How can the problem of large frozen coal clumps in the coal storage bins during winter in the northeast be solved? Recently, it has been observed that large frozen coal clumps get stuck near the plug valve, preventing coal from being discharged. Has anyone encountered this issue? Does adding heat tracing help? Is it effective to use nitrogen gas?
Hello, have you used it? Is the effect good? Is your factory building enclosed?
Heating is required in all cases. Our company is located in Inner Mongolia, and we started installing heating systems there as early as October
Build a thawing warehouse as a temporary solution; steam should be circulated around its interior to prevent freezing. This approach can help avoid coal caking in winter. However, heat tracing may not be effective – when it snows, everything freezes solid, making it difficult to load coal.
Blow hot nitrogen and provide insulation and heat tracing. Build a dry coal shed at the source
Blowing with hot nitrogen serves two purposes: first, it thaws the material; second, in summer when temperatures are high, using nitrogen that is not heated can effectively prevent fires； The use of steam is not recommended.
When coal reaches a certain level of humidity, nitrogen is ineffective; unless it is hot nitrogen, in which case using heat tracing is a more reliable approach.
When considering coal silos in the northeast, the following points should be taken into account: 1. Whether the coal silo is enclosed; if it is not enclosed, it must be enclosed； 2. What is the moisture content of the coal? If the moisture content exceeds 11% and the coal has been stored for more than 36 hours, it is not recommended to use silos for its storage ； 3. What is the transportation distance? If it exceeds 10 km and the lowest temperature in winter is -30°C, it is recommended to design thawing warehouses for both rail and road transportation ； 4. For coal storage, it is best to use rectangular coal storage facilities, with a stacker-reclaimer installed in the middle. An underground coal receiving pit should be designed within the coal storage area; for train transportation, an underground coal receiving trough must be provided, and the unloading site should be enclosed.