Yangquan Coal Group presents seven technical challenges, inviting experts from home and abroad to work together on their solution

Thread Content

Source: China Chemical Industry News. At the innovation and entrepreneurship seminar held by Yangmei Group on June 23, Chief Engineer Linghu Jianshe outlined 7 technical challenges and needs that the company faced in terms of safe chemical production, transformation and upgrading, as well as innovation-driven development. He invited experts and engineering professionals from home and abroad to offer their suggestions and help overcome these difficulties. 　 These seven technical challenges and requirements relate, first of all, to new energy-saving and environmental protection technologies for the coal chemical industry that meet the new energy conservation and environmental protection standards, particularly mature solutions for wastewater treatment, ensuring compliance with emission standards for flue gases, and addressing odor problems. The second is salt-containing wastewater treatment technology. Currently, wastewater treatment in chemical enterprises typically employs the evaporation-concentration-crystallization process to produce solid crystalline waste salts; this method is highly energy-intensive, and the large amount of saline wastewater generated during the process is difficult to treat. Third are the technologies for treating black water and fine ash from powder coal gasification, as well as the technologies for treating and utilizing gasification slag. Fourth, both the Jinhua furnace and the aerospace furnace use quenching processes, resulting in high concentrations of inorganic salts; how to address the problem of scaling in the ash water pipelines. Fifthly, in the process of producing ammonia from coke oven gas, the benzene content in the temperature-controlled adsorption system used for removing benzene and naphthalene from the coke oven gas exceeds the allowable limit; this leads to benzene crystallization at the bottom of the stripping tower in the low-temperature methanol washing unit, thereby preventing the ammonia synthesis system from operating stably over extended periods of time. Sixth, the catalysts used in the coal-based ethylene glycol production process have a short lifespan, so there is an urgent need to develop new types of catalysts. Seventh, the bed temperature of the circulating fluidized bed boiler is relatively high; the designed bed temperature is 899°C, but the actual bed temperature during operation averages 950°C, which is 51°C higher than the design value. Prolonged operation at such high bed temperatures often leads to damage to the central cylinder of the boiler’s cyclone separator ； The expansion within the furnace’s screen pass and screen re-expansion sections is hindered, resulting in severe bending and deformation; this leads to increased wear on the walls of the screen pass and screen re-expansion tubes, thereby causing leakage faults in these areas. 　 Zhai Hong, Secretary of the Party Committee and Chairman of Yangquan Coal Group, pointed out that to overcome these seven technical challenges and meet the associated requirements, it is necessary to adopt a global perspective and an open mindset, and to bring together scientific and technological talents from across the country and even the world to work together in a complementary manner. I hope that everyone will use Yangmei as a technical testing ground and demonstration area, so that it can truly become a hub for technical resources. 　 He also said that enterprises serve as industrial platforms, capital platforms, and technology incubation platforms as well. The Yangquan Coal Chemical Industry Group will pursue development in an international, large-scale, differentiated, and high-end manner, and will continue to focus on technological innovation in areas such as gasification, catalysis, intelligence, and the development of new products.