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New coal powder separation equipment solves the problem of long-term operation. Author/Source: Xinlianxin Chemical Industry Group. Date: February 23, 2023. Clicks: 21. On February 18, the China Chemical Industry Environmental Protection Association held a meeting to evaluate the performance of coal powder separation equipment and to exchange ideas on this topic in Fuyang City, Anhui Province. Wu Gang, deputy secretary-general of the China Chemical Industry Environmental Protection Association, said that the dry powder gasification and powder separation equipment designed and developed by Henan Xinlianxin Intelligent Equipment Company has successfully solved the problem of long-term operation. The overall technology is at the leading level in China, with the diversion technology having been greatly improved, which effectively extends the duration of long-term operation and is highly beneficial for environmental protection efforts. He suggested accelerating its promotion and application. Industry experts believe that Xinlianxin Intelligent Equipment Company has innovatively adopted various flow-guiding designs to address the problem of excessively high local gas velocities in coal powder separation equipment, which can affect the equipment’s service life. This equipment was successfully applied in the renovation project of Anhui Haoyuan Chemical Group Co., Ltd., which aims to increase the annual production capacity of synthetic ammonia by 400,000 tons and urea by 700,000 tons. The bag filters for coal dust as well as the filters in the coal dust storage tanks have maintained continuous operation for over 2 years – a performance that is superior to that of similar equipment. Moreover, the emission concentration of coal dust particles is ≤5 mg/Nm3. The stable operation of the equipment effectively reduces operating costs, yielding significant economic and social benefits. "Coal powder separation equipment is an important component of the dry powder gasification process. ”Li Junqi, general manager of Xinlianxin Intelligent Equipment Company, explained that dry powder gasification coal powder separation equipment is required in both the coal powder preparation and coal powder separation processes of dry powder gasification furnaces. However, coal powder is flammable and explosive, and the equipment operates under high temperatures and negative pressures, which imposes extremely high demands on the equipment’s sealing performance, strength, explosion relief design, as well as operation and maintenance. Coal powder separation equipment with traditional structures suffers from problems such as ash accumulation, filter bag damage, powder leakage, and corrosion, which lead to a decrease in coal powder separation efficiency and excessive emissions of particulate matter in the exhaust gas; these issues have a significant impact on the long-term stable operation of the entire processing system. Furthermore, coal powder separation equipment with a traditional structure has the problem of a short continuous operation cycle. According to statistics, the current continuous operation cycle of traditional coal powder separation equipment in China is 1–6 months. "In July 2020, the company began the planning and development of dust removal equipment for coal powder separation systems as well as for boilers. It organized researchers to conduct in-depth studies on the technical characteristics of such equipment, adopting key technologies such as a three-way diversion design with air intake and outlet at the middle, as well as a vertical air intake three-way diversion design for the coal powder storage tank filters – all of which helped to extend the continuous operation time of these devices. " Li Shuangben, the chief engineer at Xinlianxin Intelligent Equipment Company, explained that the equipment is equipped with an intelligent control system. This system consists of four hardware modules: online monitoring, data analysis, automatic control, and fault alarm. Through intelligent system programs with independent intellectual property rights, it enables functions such as the automatic operation of the coal powder separation system, intelligent control, fault early warning, and safety interlocks. "The efficient and long-term operation of the gasification system determines the profitability of the enterprise as well as the market competitiveness of its products. As an essential coal powder separation device for the dry coal powder gasification process, its efficient and long-term operation is a necessary condition for ensuring the efficient and long-term operation of the gasification system. The long-cycle operating dry powder coal gasification coal powder separation equipment developed by us holds significant market and social value. ” Zhang Qingjin, general manager of Henan Xinlianxin Group, said. A relevant official from Anhui Haoyuan Chemical Group Co., Ltd. said that by optimizing aspects such as diversion technology, material selection, and the installation of explosion vent windows, Xinchongxin Intelligent Equipment Company has significantly improved the performance of the dust removal equipment in coal powder separation systems, with all indicators meeting the expected standards.