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Rainbow supplied a 60m self-supported steel chimney for a 120 T/D hazardous waste incineration EPC project in Anhui, China. It was designed to facilitate continuous flue gas discharge, where corrosive resistance materials and thermal expansion control are also embedded with structural reliability for the severe operating conditions of waste incineration.
Waste incineration plants produce flue gases at high temperatures which contain compounds that are very corrosive and can reduce the service life of standard chimney systems by more than half. The client needed a stainless steel chimney system that could resist corrosion, accommodate thermal expansion, and meet environmental emission standards — all within a tight EPC schedule.
Rainbow designed and developed an industrial chimney with a customized Duplex 2205 stainless steel inner liner, the outer shell made of Q355B, and axial sliding connection to take care of thermal expansion. The entire system is designed to ensure safety during operation and ease of maintenance, incorporating platforms, spiral stairs, ladders, and a vibration damper.
Successfully delivered and installed on schedule
Stable operation under corrosive flue gas conditions
Enhanced corrosion resistance with Duplex 2205 stainless steel
Optimized thermal expansion performance through sliding support design
Compliant with GB50051-2021 and HJ 75-2017
Reliable, low-maintenance performance for long-term operation
This project showcases Rainbow's capability in offering waste incineration plant chimney solutions that amalgamate engineering design, corrosion-resistant materials, and effective EPC execution. From material selection to structural optimization, every solution is customized to maximize reliability, safety, and lifecycle value.
