Coal Consumption Online Measuring System

A coal consumption online measuring system, characterized in that, the system comprises a solid particle equivalent atomic number measuring device, a gas-solid two-phase flow rate measuring device, an ash content measuring device, a volatile content measuring device and a moisture content measuring device, the solid particle equivalent atomic number measuring device and the gas-solid two-phase flow rate measuring device are installed on a coal transporting pipeline of a coal transporting path, the ash content measuring device, the volatile content measuring device and the moisture content measuring device are arranged on the coal transporting path, the solid particle equivalent atomic number measuring device, the gas-solid two-phase flow rate measuring device, the ash content measuring device, the volatile content measuring device and the moisture content measuring device are all connected to a data acquisition and processing device, wherein:

• the solid particle equivalent atomic number measuring device and the gas-solid two-phase flow rate measuring device are configured to measure a real-time density and a real-time volume flow rate of coal powder in the coal transporting pipeline, the ash content measuring device, the volatile content measuring device and the moisture content measuring device are configured to measure a real-time ash content, a real-time moisture content and a real-time volatile content of coal powder in the coal transporting path, the real-time ash content includes a total content of ash, the element composition of the ash and the contents of the respective elements in the ash;
• the data acquisition and processing device is configured to calculate a matrix characteristic of the coal powder according to one or more of the measured real-time density, real-time ash content, real-time moisture content and real-time volatile content, and iteratively correct one or more of the measured real-time density, real-time ash content, real-time moisture content and real-time volatile content according to the calculated matrix characteristic of the coal powder;
• the data acquisition and processing device is configured to calculate a real-time mass flow rate according to the iteratively-corrected real-time density and the real-time volume flow rate, and calculate a real-time calorific value of the coal powder according to the iteratively-corrected real-time ash content, real-time moisture content and real-time volatile content.
• the data acquisition and processing device is configured to calculate a real-time energy of the coal powder according to the real-time mass flow rate and the real-time calorific value, and perform time integration of the real-time energy to determine a coal consumption within a prescribed time period.