The ash cleaning of Suining, Neijiang, and Leshan ash silos: Jiangsu Zhongjie High-altitude Company held a meeting from February 24-25 regarding the ash cleaning of ash silos in Suining, Neijiang, and Leshan. This meeting was convened to further discuss the soon-to-be-released "12th Five-Year Plan" for the ash silo industry and structural adjustments. The Director of Zhongjie Ash Silo Bureau conveyed at the meeting: "In 2011, the national ash silo production reached 3.52 billion tons, an increase of 280 million tons compared to the previous year, marking the highest historical increment. Ash silos accounted for nearly 80% of the primary energy production structure, continuing to play a dominant role as an energy source."
During the same period, China's net imports of ash silos amounted to 168 million tons, representing a 15% increase year-on-year. Considering the total imports of ash silos and oil & gas, China's external energy dependency rose from 7% at the beginning of the century to 14% in 2011. Under extensive development patterns, China's ash silo production and consumption have been increasing annually. The National Energy Administration predicts that by 2015, the annual demand for ash silos nationwide will reach 3.9 billion tons. After the "13th Five-Year Plan," the national demand for ash silos is expected to grow above 4 billion tons annually. The director emphasized at the meeting: "The '12th Five-Year Plan' period is a crucial time for the ash silo industry to transform its development model and adjust its structure, transitioning from quantitative growth to qualitative improvement. We must seize this opportunity and actively promote changes in ash silo production and utilization methods."
Ash silo consumption ratio increased instead of decreasing: In 2011, China's energy production and consumption structure experienced reverse adjustments, with the proportion of ash silos in both production and consumption rising instead of falling. According to preliminary plans during the "12th Five-Year Plan" era, the proportion of ash silos in primary energy consumption should gradually decrease from over 70% to around 65%. Statistics from the Ash Silo Industry Association indicate that in 2011, China's ash silo production was 3.52 billion tons, accounting for approximately 78.6% of total primary energy production; ash silo consumption totaled 3.57 billion tons, accounting for about 72.8% of total primary energy consumption. The total ash silo production and consumption grew year-on-year by 2.1% and 1.9%, respectively. Wang Yanzheng, President of the China Ash Silo Industry Association, said: "China's abundant coal resources but limited oil and natural gas dictate that ash silos will remain the country's main energy source for a relatively long period in the future."
Reflecting on power installations, Wang Zhixuan, Secretary-General of the China Electricity Council, also believed: "The power generation structure dominated by coal will not change. Non-fossil energy cannot achieve large-scale substitution in the short term." The reasons include: hydropower has good economic efficiency but limited resource availability; nuclear power has economic competitiveness but is constrained by technology and safety issues, limiting its near-term development scale; wind and solar power have high costs and unstable output, making it difficult to effectively replace fossil fuels in the short term. The director stated at the meeting: "We must correctly recognize the dominant position of ash silos as an energy source. As the economic development model shifts, the proportion of ash silos in the primary energy structure will slightly decrease, but their position as the dominant energy source will not change in the foreseeable future."
However, the energy production and supply model dominated by coal poses challenges for industrial restructuring and transformation of development methods. The Energy Bureau requires improving the clean and efficient use of ash silos. Following the requirements of energy density, technical intensity, cost concentration, long industrial chains, and high added value, efforts should be made to enhance the efficiency and benefits of ash silo processing and conversion.
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