Learn from China Coking Industry Association, paper dyes China's CDQ technology matures, large-scale promotion in the country have been equipped.
Ministry of Industry published a new iron and steel enterprises and coking enterprises to promote the implementation of the proposed scheme of CDQ technology, China will mature in terms of large and medium steel companies and some independent coking enterprises to promote CDQ technology. 2010 to 2013, plans to invest 12.4 billion yuan of 75 sets of CDQ system construction (including construction), coke processing capacity of 79.47 million tons. CDQ large and medium steel companies is expected to more than 90%, direct dyes 40% of CDQ coke industry for more than 3.18 million tons of standard coal in the final formation of energy-saving ability.
Dry Quenching Technology is rapidly developing domestic steel companies, steel companies have established large CDQ device. The world's largest single set of processing 260 tons / hour CDQ device, in May 2009 in Beijing, HFC 227ea Tang Shougang Iron and Steel Co., Ltd. was put into production, waste heat generated 9.8MPa CDQ supporting high-pressure steam generator 2 × 25MW , indicates that China CDQ technology to the world advanced level. "CDQ unit has been running smoothly, has reached the design capacity." Ji, minister of the company's coking Fushun told reporters that the first two sets of CDQ device was put into production in late January of this year,Expected to be completed trial run in March.
Nevertheless, the current domestic coke industry CDQ rate remains low, the project has been completed there CDQ coke burning large steam output and less problems, not to achieve the desired energy savings. Meanwhile, the fine dust produced CDQ environmental governance could be improved, stamping coke oven coke production volume density, HFC 227ea circulating gas cooling and other difficult problems still need research.
China Coking Industry Association, said the Secretary-General Yang Wenbiao, 80s of last century, China imported from Japan after the application of CDQ technology in Baosteel, continuous improvement and innovation, FM 200 developed with independent intellectual property rights of the CDQ technology. Demonstration unit in 2004 with the CDQ - Ma Steel and Steel CDQ project through the successful production, the country has achieved CDQ technology and equipment at home. At present, China has been able to independently design, manufacture and construction of 50 260 tons / hour of all sizes CDQ device, CDQ technology matures, the major technical indicators have reached international advanced level. As of the end of 2009 CDQ device put into operation in China has 91 sets, the annual handling capacity of 85.81 million tons, textile dyes ranking first in the world, to become the most CDQ device, processing the largest country.