Core Viewpoint - The Huaneng Zhengning Power Plant in Gansu is operating two 1 million kW coal-fired generating units at full capacity to ensure energy supply during winter, with a significant focus on carbon capture technology to reduce emissions [1] Group 1: Energy Supply and Capacity - The two units can generate 48 million kWh of electricity in a day, sufficient to meet the daily power needs of millions of households, with most of the electricity transmitted to Shandong via ultra-high voltage lines [1] - Coal power contributes over 50% of the electricity generation and 70% of peak capacity in China, despite having less than 40% of the installed capacity [1] Group 2: Carbon Capture Technology - The carbon capture demonstration project at Huaneng Zhengning Power Plant is the largest of its kind globally, achieving a CO2 capture rate exceeding 90% and capturing 1.5 million tons of CO2 annually, equivalent to the emissions of approximately 600,000 cars [1] - The project utilizes a novel "two-tower integrated" design for carbon capture, which combines pre-washing and CO2 absorption into a single unit, significantly improving efficiency and reducing energy consumption [2] Group 3: Advanced Equipment Development - The first eight-stage supercritical CO2 compressor in China has been developed, capable of compressing captured CO2 to a supercritical state, reducing its volume to 1/300 of its original size, thus enhancing pipeline transport efficiency [3] - This compressor features eight compression cylinders, improving efficiency by 10% and saving 10 kWh of electricity for every ton of CO2 compressed, filling a gap in domestic supercritical compression equipment [3] Group 4: Carbon Storage Solutions - The project employs multi-layer injection technology to store captured CO2 at depths of 2000 to 3500 meters, significantly increasing storage capacity, with a single well capable of storing 200,000 tons of CO2 annually [4] - An integrated monitoring system is in place to ensure the long-term safety and effectiveness of CO2 storage, utilizing satellite remote sensing and ground monitoring [4] - The carbon capture demonstration project also supports flexible operation modes, allowing coal-fired units to adjust output while achieving large-scale carbon capture [4]
碳捕集 电厂添了新利器