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Fengxi Group’s Quanji Water-Coal Slurry Concentration Project Was Successfully Put into Operation Author/Source: Date: 2018-04-10 Clicks: 23 On March 14, 2018, Fengxi Group’s Quanji Company’s water-coal slurry concentration project was successfully commissioned in one go. The project was approved by the company’s Party and administrative joint committee on August 15, 2017, and construction began in November 2017. At present, the system is operating stably, with significant improvements in the quality of the coal slurry and the gasification parameters. The concentration of the coal slurry has increased from 60% to over 64%, and its fluidity, stability, and atomization properties have been markedly improved. This has also led to an increase in gasification efficiency, as well as a reduction in the coal and oxygen consumption per unit of gas produced. As a result, the proportion of useful gases in the syngas has risen from around 80% to around 82%. This approach not only improves gasification efficiency but also solves the problems related to pump operation, achieving two benefits at once! Slurry concentration, as one of the key parameters in water-coal slurry gasification, directly affects the gasification efficiency. The higher the coal slurry concentration, the more favorable it is for improving gasification efficiency; however, if the concentration is too high, pumping it using high-pressure coal slurry pumps becomes an urgent problem to address. How can we achieve both easy pumping and improved gasification efficiency? Through proactive exploration and a spirit of innovation, Quanji Company’s gasification workshop has introduced a new set of equipment: fine grinders and ultra-fine grinders. The addition of fine and ultra-fine slurries improves the packing efficiency of the coal slurry, increasing the mass of coal slurry per unit volume and thereby raising the concentration of the gasification coal slurry. Furthermore, by incorporating fine and ultra-fine slurries, fine and ultra-fine particles are added to the coarse-particle coal slurry, which optimizes the particle size distribution of the slurry and enhances its fluidity and stability, effectively solving the problem of difficult pumping of high-concentration slurries. The successful operation of this device will provide a solid guarantee for Quanji Company to achieve high and stable production levels of synthetic ammonia, while also serving as a positive example for technological innovation and progress in the industry.