Longfeng Thermal Power Company of Shandong Energy Longkou Mining Group received "high-tech enterprise" certificate issued by the Shandong Provincial Science and Technology Department.
Since its inception in 2003, the company has been dedicated to the recycling of solid waste. At present, the company has formed a circular industrial chain started with coal gangue processing, followed by electricity and heat generation, ash solid waste reuse, and cement production
In recent years, the company has earmarked 4.5 percent of its annual income for R&D.
The new liquid-agent denitrifying process enables the remote and separate feeding of three boilers and improves the atomization rate of denitrifying agent in the furnace. Under the same conditions, NOx emissions can be reduced by 45% and costs by 60%.
The company has also made several innovations in the secondary use of solid waste. At present, the research project of desulfurization gypsum technology to replace natural gypsum has been applied. They installed calcium and sulfur tester and constant speed belt scale, and added auxiliary materials, in oeder to ensure cement quality, thus successfully recovered the waste gypsum generated by desulfurization in thermal power plants.
Currently all types of solid waste have been recycled and reused, and the emission targets for sulphur dioxide, soot and nitrogen oxides have dropped from 1200mg/m3, 200mg/m3 and 450mg/m3 at the beginning of the plant construction to below 35mg/m3, 10mg/m3 and 100mg/m3 at present.