Shandong Zibo mining group Donghua cement company purchased 30 tons of ammonia is used for flue gas deNOx. "Ammonia can cost nearly 20,000 dollars a day. "Wang Yong, General Manager of the company said although the environment cost pressure, but compared with the environmental and social benefits, it is worth it.
Since the founding of the company, has been focusing on environmental protection and energy saving and emission reduction, residual heat power station was put into operation in 2007 new dry-process cement in Shandong province, the first pure low temperature waste heat projects, saving 12,000 tons of standard coal each year, reducing sulfur dioxide emissions 357 tons and carbon dioxide emissions of 60,000 tons. Started in 2010 energy management systems, coal, electricity, water, gas and air and equipment, raw materials consumption real-time monitoring of the situation, avoiding energy waste. In 2012 and 2013, the company invested more than 10 million Yuan respectively, implementing change bag filter technology projects, from 46 milligrams per cubic metre of dust emission concentration lower than 17 mg, below the national standard.
Meanwhile, the company relies on technology and process improvements to increase environmental protection and energy conservation efforts, air compressor, low voltage capacitor compensator, 18 projects, such as the implementation of the energy-saving modification of hot blast stove, realize energy-saving 524 tons of standard coal equivalent, application of flue gas heat recovery exchanger effect is obvious. So far this year, tons of comprehensive electricity consumption of clinker, t/a cement grinding power consumption decreased 5.6% and 5.3%, respectively.