The research progress on online detection technology of total moisture in coal
The total water content serves as a crucial parameter for coal evaluation.Its measurement is closely associ-ated with the coking coal blending process,which directly impacts coke quality and significantly affects pipeline and equipment lifespan.Therefore,in order to meet the requirements of production regulation,it is necessary to conduct real-time online detection of total moisture in the entering furnace coal.The influence of total moisture fluctuations on the coking process,highlights the necessity of total moisture control and both the occurrence forms of total moisture in coal and the national standard method for measuring total moisture were elucidated.Considering the advantages and disadvantages of existing drying methods,this paper particularly focuses on discussing the principles and potential ap-plications of infrared and microwave methods within indirect approaches.Among these options,we recommend em-ploying microwave technology as an optimal choice for online detection purposes.The prospects for its application di-rection,linked dry based coal blending,and coal total moisture control technology are provided.The use of infrared or microwave radiation methods for total moisture detection of coal samples can meet the requirements of online tes-ting,the microwave method is more suitable for testing the total moisture content of coal.The weighing data of the microwave moisture meter and the tape scale are linked,and it will be upload to the central control DCS for integrated analysis,the cutting amount according to process requirements can be automatically adjusted,dry based coal blend-ing can be done;after feedback of total moisture measurement data and linkage with coal total moisture control tech-nology,the coal moisture can be smoothly fed into the furnace,which will achieve the goal of total moisture control.
total moisture in coalonline detection technologymeasurement methodmicrowave methodinfrared methoddrying methodmicrowave moisture meter
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