Coal blockage in raw coal bunkers is a common operational challenge and critical hidden danger disrupting unit performance during daily thermal power plant operation. UHMWPE coal bunker liners serve as the core solution to tackle this problem. Once coal blockage or coal cut-off occurs in bunkers, coal supply to boilers will be immediately interrupted, triggering equipment shutdowns.

Traditional coal bunker inner walls are made of steel plates or concrete with a high friction coefficient, making coal powder prone to adhesion and accumulation. With long-term operation, coal dust continuously sticks to the walls and piles up, forming coal buildup and arching inside the bunkers, which frequently leads to blockages. To maintain normal coal feeding, operation and maintenance staff have to frequently deploy air cannons for dredging and manual bunker cleaning. This not only consumes massive labor and material resources, but also accelerates wear and tear from repeated equipment startup and dredging, driving up the power plant’s overall operating costs.

The installation of UHMWPE coal bunker liners fundamentally eliminates the pain point of coal bunker blockage in power plants. Featuring an ultra-low friction coefficient and outstanding self-lubricating performance, UHMWPE liners stand out from conventional lining materials with their smooth, non-stick surface. Neither dry coal powder nor damp coal dust can easily adhere to the bunker wall.

Fitting UHMWPE liners inside raw coal bunkers effectively eliminates various blockage problems including coal buildup, arching and bridging, enabling smooth, even coal discharge. It drastically cuts down the frequency of manual cleaning and mechanical dredging, greatly lowering maintenance workload and production costs.

This article is compiled and edited by Henan Jinhang Engineering Plastics Co., Ltd. (www.upeplastic.cn), Editor-in-Charge: Jinhang. Our company specializes in the R&D and manufacturing of UHMWPE coal bunker liners. Reproduction is permitted with clear source attribution.