Coal-fired power plant carbon emission on-line monitoring method based on laser induced breakdown spectroscopy

Abstract

The invention discloses a coal-fired power plant carbon emission on-line monitoring method based on laser induced breakdown spectroscopy. The coal-fired power plant carbon emission on-line monitoringmethod based on the laser induced breakdown spectroscopy comprises the following steps: S1, obtaining known data of a power plant; S2, using the LIBS method to continuously measure the carbon contentof coal, the carbon content of fly ash and the carbon content of slag; S3, calculating the carbon oxidation rate of coal combustion; and S4, calculating the carbon emission rate and total carbon emissions of the power plant. The invention utilizes the LIBS method to measure the carbon content of coal, the carbon content of fly ash and the carbon content of slag on line to calculate the carbon oxidation rate of coal combustion, so as to obtain the carbon emission rate and the total carbon emissions of the coal-fired power plant according to a carbon balance calculation formula. The coal-fired power plant carbon emission on-line monitoring method based on the laser induced breakdown spectroscopy combines the LIBS detection method with the carbon balance method, which can realize continuous online measurement, and has the advantages that the analysis speed is high, the sensitivity is high, the preparation of samples is not required, uneven samples can be analyzed, remote detection can beperformed and the like; meanwhile, more accurate and reliable real-time carbon emission data can be obtained online, which lays a foundation for carbon dioxide emission reduction.

Description

technical field [0001] The invention relates to the technical field of carbon emission monitoring, in particular to an online monitoring method for carbon emission of coal-fired power plants based on laser-induced breakdown spectroscopy. Background technique [0002] my country is the world's largest carbon dioxide emitter. Among them, carbon dioxide emissions from the coal-fired power generation industry account for 40% of the country's total emissions, which is the future CO2 emission. 2 The focus of emission reduction. Whether it is conducting carbon trading or reducing carbon dioxide emissions, it depends on an accurate carbon emission monitoring system to obtain accurate carbon emission data. [0003] At present, my country's coal-fired power plants use the emission factor method recommended in the "Guidelines for Accounting and Reporting Greenhouse Gas Emissions of Power Generation Enterprises in China (Trial)" to calculate CO 2 emissions. Since the fuel type, comb...

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Problems solved by technology

Although the carbon balance method is relatively accurate, there are still two problems: 1. my country's coal-fired power plants lack coal-fired elemental analysis data (coal-fired carbon content); Most of the carbon content is measured by the traditional chemical ignition weight loss method. This method (1) theoretically also includes the weight loss of S, N, etc., and the measured carbon content is higher than the actual value; (2) the overall sampling measurement period is long, which cannot meet continuous online measurement requirements

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