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Proposal Number: 6466

Domain: Advanced Materials

Theme(s): Energy

Supporting Central Government Agency: Department of Heavy Industries

Budget (Rs. Lakhs): 96.00

Principal Investigator: Harpreet Singh

Principal Investigator Institute: Indian Institute of Technology Ropar

Manpreet Kaur ,BBSB Engineering College Fathegarh Sahib
Eklavya Calla ,GE Power Bangalore
K. Anand ,GE Power Bangalore

Domain: Advanced Materials

Project Title

Erosion, Corrosion and Deposition Resistant Coatings for Coal-Fired Boilers

Project Images

Image Caption:Probable erosion-corrosion mechanism for [{(Cr3C2-NiCr)+25%(WC-Co)}+1%Si] coated T22 boiler steel exposed to actual boiler proposed by our group

Web Abstract

In power plant boilers, hot ash particles impinge on the tubes, causing erosion, simultaneously the salts present in the boiler environment also cause high-temperature corrosion. Even the ash and slag build up on the tube surfaces as insulating complex oxides, which affect the heat transfer efficiency. Surface coatings on the tube surface, prevent from the formation of iron oxide, as well as, reduce slagging, thus increasing the heat transfer rate. However, the thermodynamic aspects of the coatings developed are still lacking and are needed to be evaluated. This project aims to develop benchmark coating compositions on the coal-fired boiler tube surfaces, which have high hardness, inert to oxides to the extent possible, high bond strength, dense and resistant to slag and fly ash penetration. This research will lead to increase in overall efficiency of boilers and can help to reduce electricity prices. Fig 1 and 2 describe the recent work done by the investigators in this direction.

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