The project is to build two sets of coke dry quenching (CDQ) systems on 8 coke ovens to replace its existing coke wet quenching (CWQ) systems. The CDQ systems will recover waste heat from red-hot coke and utilize the sensible heat for electricity generation. The electricity will be used to meet the company’s power demand, displacing the electricity mainly purchased by BISCO from the North China Power Grid.
The proposed project will adopt Japan Nippon Steel Corporation CDQ technology, which uses inert gas to reclaim sensible heat from the coke quenching process. In the steam-water heat exchanging process, steam will be produced in the CDQ boilers, then enter the turbine for electricity generation.
The project has significant environmental and social benefits. It will contribute to sustainable development as follows:
- The project will reduce the waste of energy resources and promote energy conservation
- Electricity generated by this project will displace coal-fired power generation in the North China Power Grid, reducing the environmental pollution generated from burning coal
- The project will significantly reduce dust from the existing CWQ facility
- The project will create employment opportunities for the local community during the construction and operation of the project.
Upon the time of implementation of the project, CDQ technology has not been widely taken up in China. The operating reliability of large CDQ systems has not been validated. The project has undertaken the high risk of operating the highly automated CDQ system and special need for extensively trained staff. Revenues from CER sales in the project will help overcome the operational difficulties and provide more resources to strengthen staff training for construction and operation of the CDQ system.
The project activity will promote the dissemination of CDQ technology in China. This will contribute to sustainable development, improve local air quality, and create employment opportunities and increase income, among other benefits.
The DCF will purchase the first 900,000 CERs generated by this project.