CokeDryQuenching(CDQ).PDFVIP

Source:JASE-W Japanese Smart Energy Products Technologies http://www.jase-w.eccj.or.jp/technologies/index.html S-10 Keywords Y3 equipment or facility Z1/5 solid fuels/water D Construction NIPPON STEEL SUMIKIN ENGINEERING CO., LTD. Coke Dry Quenching (CDQ) Features CDQ is a system to recover the sensible heat of red hot coke by means of inert gas. Then by the use of the recovered heat, produce high-temperature and high-pressure steam in a boiler. The steam produced without additional energy is used for the generation of electric power, production of steel, etc. Because of its dry quenching system without using water, as well as effective utilization of energy, CDQ has the following excellent features. Basic Concept or Summary Effects or Remarks 1. Saving energy When generating electric power by utilizing the steam produced by CDQ, one CDQ unit which has a treating capacity of 100T/H, can generate about 18MW electric power. Enabling effective utilization of energy that was dispersed into the atmosphere in the conventional wet quenching method. 2. Environmental Improvement In CDQ, there is no puff of white smoke including dust because all the processes are totally enclosed. As a result, the working environment around CDQ equipments is improved. 3. Protection of Global Environment In generating electric power, CDQ does not produce the greenhouse gas (CO2), which an oil-burning boiler produces. Reduction of CO2 by CDQ is nearly equivalent to 18T/H CO2 that an oil-burning boiler