Abrasion and Corrosion Damage Reversed at Coal Plant with Devcon® Ceramic Coatings Case Study

PublishTime：2023-11-30

●At a coal power plant, coal is sent through a pulverizer which grinds the material into a coarse powder. The coal powder is then sent via screw conveyor to a large industrial furnace equipped with boiler tubes filled with water. The coal powder is burned, heating the boiler tubes and converting the water into steam. This process produces the same steam, which is converted to heat and light energy – the output of the coal plant.
●Problem
■The screw conveyor, transporting coal to the furnace, faced abrasion wear due to dry coal collecting on the screw conveyor trough and on the screw flights. The constant abrasion wear caused cavitation in the trough, preventing the proper conveying of the coal, vital to plant operations. The screw conveyor trough needed to be rebuilt back to the equipment specification. The client was looking for a long-term solution which would provide long-term wear resistance, limit equipment downtime, and increase productivity.
●Solution:
■Devcon Ceramic Repair Compound was used to restore corroded trough areas while Devcon Brushable Ceramic Red and Devcon Brushable Ceramic Blue coatings provided the required long-term wear resistance.
◆For optimal application, the trough was blasted to a white metal status and wiped with solvent.
◆Devcon Ceramic Repair Compound was applied to the worn gouges and holes in the trough, repairing areas of cavitation.
◆After a 4-hour cure, two coats of Devcon Brushable Ceramic Coating in red and blue were applied with a thickness of 15 mm for a total coating of 30 mm.
◆In order to achieve ideal protection from wear and abrasion, the conveyor screw was also coated with Devcon Ceramic Repair Compound, and Devcon Brushable Ceramic Red / Blue coatings at a total thickness of 30 mm.
◆The versatility of Devcon industrial strength epoxies allowed for differing components of the screw conveyor trough to be repaired with only a few easy-to-use products.

Brand of Product：	Devcon
Part#：
Product Category：	Ceramic Coatings 、 Ceramic Repair Compound More
Application：	[ Coal Plant ] More
Data Type：	Case Study More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	August 2022
Version Number：
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Data Size：	312 KB

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