The increasing focus on sustainability of Steel Industries worldwide has brought in new trends, viz. maximizing utilization of assets and reduction of energy consumption and carbon footprint. Coke dry quenching (CDQ) technology for recovery of waste heat from hot coke to generate process steam and power is well established and adopted worldwide that meets these objectives of sustainable operation. Conceptualizing and executing CDQ technology in brown field site conditions throws up many challenges requiring innovative approach for technically and financially feasible solutions. The complexity of the situation is compounded with the requirement of proper technology selection based on space availability, synchronization of CDQ operation with oven pushing schedule, integration of the process with existing system, keeping the existing coke oven batteries operative as well as adhering to maintainability, process safety protocols and constructability of new facilities within the project execution schedule. Brief description of CDQ process, advantages and challenges for implementation of the same in brownfield unit has been described in this paper with examples/ references.

全世界对钢铁工业可持续性的日益关注带来了新的趋势。最大限度地利用资产并减少能源消耗和碳足迹。焦炭干熄灭（CDQ）技术用于从热焦炭中回收余热以产生工艺蒸汽和动力已得到广泛应用，并已在全球范围内采用，从而满足了这些可持续运营目标。在棕地现场条件下概念化和执行CDQ技术提出了许多挑战，需要在技术和财务上可行的解决方案采用创新方法。这种情况的复杂性与以下要求加在一起：根据可用空间来选择合适的技术，将CDQ操作与烤箱推进时间表同步，将过程与现有系统集成，在项目执行进度计划中，保持现有的焦炉电池运转正常，并遵守可维护性，过程安全协议和新设施的可建设性。本文已通过示例/参考文献对CDQ过程的简要说明，在Brownfield单元中实现CDQ过程的优点和挑战进行了描述。