Production and manufacturing of waste heat boilers for coking flue gas

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The exhaust gases generated by the combustion of coke oven gas in the combustion chamber have some of their sensible heat recovered by the regenerative brick chambers; thereafter, they are discharged into the atmosphere through small flues, exhaust gas exchange valves, branch flues, main flues, and a chimney. Before entering the chimney, the temperature of these exhaust gases is around 270–300°C. The substantial amount of residual heat contained in the exhaust gases released through the flues and chimney is not utilized effectively, resulting in a waste of this usable waste heat energy. With the implementation of policies aimed at energy conservation and emission reduction, increased monitoring efforts, and the need for enterprises to enhance their competitiveness, utilizing this heat in recovery equipment such as waste heat boilers not only enables rational and efficient utilization of the waste heat generated by coke ovens but also satisfies the demand for steam required in coke production processes, thereby helping enterprises save energy, reduce consumption, and improve their economic efficiency. The waste heat from this portion of the flue gas is recovered through a coking flue gas waste heat recovery system, generating 15 tons per hour of low-pressure saturated steam at 0.8 MPa for use in chemical production. This approach **reduces production costs and contributes to energy conservation and environmental protection by minimizing the emission of waste heat**, while also improving energy efficiency. It holds great significance for optimizing the energy usage structure, reducing energy consumption, and protecting the environment; it also aligns well with the energy conservation policies outlined in the 12th Five-Year Plan. It also brings considerable economic and social benefits to enterprises.