Research on energy consumption evaluation and energy conservation potential of modern coal chemical gasification
With the increasing global concern for sustainable development and carbon emission reduction,the coal chemical industry is actively seeking technological innovation and development path transformation to achieve the goals of energy conservation and emission reduction.As a key link in the coal chemical industry chain,the efficiency of coal gasification directly affects the energy consumption and environmental impact of the coal chemical industry.Based on the material balance in the coal gasification process,the transfer and distribution of various elements between raw materials,intermediate products,final products,and by-products were elucidated by studying the element balance of carbon,hydrogen,oxygen and heat balance,as well as their reaction equilibrium constants,and the yields of carbon monoxide(CO),carbon dioxide(CO2),hydrogen(H2)and other gases in the coal gasification products were simulated and calculated.As the basis for energy consumption evaluation,the main energy efficiency indicators of gasification,including effective gas composition,cold coal gas efficiency,gasification efficiency,etc.,were evaluated,and the energy conservation and coal-saving potential in the gasification process was analyzed.Taking coal water slurry gasification as an example,the material and energy flows in the coal gasification process were analyzed,and the possibility of improving the gasification efficiency of coal water slurry was studied.Through the study of energy-saving technology pathways in coal to natural gas,coal direct liquefaction,coal indirect liquefaction,and coal to olefin processes,it has been found that different coal chemical process paths have energy conservation potential as long as they are optimized for energy conservation and consumption reduction.At the same time,effective pollution treatment and reuse in coal chemical production enterprises can further reduce coal consumption and energy consumption,and improve resource utilization efficiency.
coal gasificationcoal chemical industryprocess pathmaterial balanceheat balanceenergy consumptioncoal saving
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