国家产业政策要求，新建焦炉必须配备与之能力相适应的干熄焦装置。某焦化厂准备建设2套125 t / h和2套140 t / h干熄焦装置。干熄焦余热发电有2种常见的装机方案，分别是单压高压锅炉配带回热系统的凝汽式汽轮发电机组、双压高压锅炉配不带回热系统的凝汽式汽轮发电机组。介绍了这2种方案的特点，并结合本工程对其进行了技术经济比较，得出双压高压锅炉配不带回热系统的凝汽式汽轮发电机组节省投资、经济效益更好。
It is pointed out in national industrial policy that the new coke oven must be equipped with the corresponding coke dry guenching （ CDQ ）. The two sets of 125 t / h and two sets of 140 t / h CDQ devices were built in a coking plant. There were two common installed schemes in CDQ waste heat power generation which were the single-pressure and high-pressure boiler with condensing steam turbine generator back to the heat system, dual-pressure high-pressure boiler with recuperative system condensing steam turbine power generation unit respectively. The characteristics of these two schemes were described,their engineering technical and economy were compared. It has concluded the dual-pressure high-pressure boiler with condensing steam turbine generator back to the heating system had less investment, better economic benifit.
