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A breakthrough in the study of traceability calibration methods for large-scale raw coal bunker metering devices
[ China Instrument Network Instrument R&D ] In order to accurately collect coal consumption data and help energy conservation and emission reduction, the Institute of Metrology of Zhejiang Province has made a number of follow-up investigations, innovatively proposed to measure the coal coal storage in the furnace, and undertake the implementation of the “large-scale raw coal warehouse measurementâ€. Research on the method of calibration of device magnitude traceability. Recently, the project entered a critical field installation and commissioning phase.
According to the statistics of the National Bureau of Statistics, China's power generation in the first three quarters of this year was 5,036.17 billion kWh, of which the thermal power generation reached 3,691.81 billion kWh, a year-on-year increase of 6.9%, accounting for 73.3% of the country's total power generation. The power generation industry still occupies a large proportion.
To this end, all regions have issued a blue sky defense war plan, emphasizing the need to adjust the energy structure and production structure, and develop corresponding pollution discharge standards to limit the development of coal power plants. At the same time, for coal-fired power plants, the power transmission system of power plants is huge and complex. The metering devices installed on each conveyor chain are scattered and the data are independent of each other. How to manage the fineness of coal consumption data is also a very important issue.
The implementation of the “Research on the Method of calibrating the trace value of the large-scale raw coal bunker metering device†can effectively measure the amount of coal entering the furnace, accurately reflecting the operating status of the unit and the economic efficiency of the whole plant. Taking the installed capacity of the power plant of 2,500 MW and the annual power generation of 13 billion kWh as an example, for every 1 g/kWh of coal consumption, the standard coal quantity can be saved by 13,000 tons, which is converted into the original coal volume of about 17,000 tons, which can save power generation costs in one year. More than 700 million yuan.
In order to ensure the smooth implementation of the project and the accurate and reliable measurement results, the Zhejiang Metrology Institute has selected the technical backbone of the company, Zhejiang Energy Leqing Power Generation Co., Ltd., combined with the fuel plant and equipment team of the power plant, combined with the on-site hot fire situation and the 400 tons of raw coal bin of Unit 2. The metering transformation plan of 6 silos, detailed design of the technical transformation plan for accurate measurement of furnace coal, and the successful implementation of the installation of the first coal metering sensor.
(Source: Zhejiang Institute of Metrology, Ministry of Ecology and Environment, National Bureau of Statistics)