Heat recovery from gasification slag
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Currently, 1,500 tons of gasification slag are produced per day, with a heat content of 3,000 kcal； There is 500 tons of fine powder with a calorific value of 1,000 kcal. I would like to reuse these gasification residues through a circulating fluidized bed. How much high-pressure gas can be generated upon the combustion of this fuel? I’m new to the waste heat recovery industry; I hope experts can give me some guidance! Thank you so much!
Is the calorific value of the gasification slag 3000 kcal/kg? The amount of ash and residual carbon is quite high indeed (we estimate it based on an average of 80 for residual carbon; according to this figure, the proportion of ash and residual carbon should be 37.5%, so it’s recommended to verify this!) If it really is that high, it would be very useful. Aside: The ash and carbon residue GB of the layered gas generation furnace is
The thermal efficiency of a boiler can be estimated using the following formula; you can use it to perform reverse calculations: η = Output heat / Input heat × 100%. The input heat to the boiler equals the fuel consumption (kg/s) multiplied by the lower heating value of the fuel entering the boiler (kJ/kg). The output heat from the boiler equals the amount of water evaporated in the boiler, multiplied by (the specific enthalpy of superheated steam – the specific enthalpy of the boiler feedwater), minus the amount of waste water discharged from the boiler (usually 2% of the amount of water evaporated), multiplied by (the specific enthalpy of saturated steam in the boiler – the specific enthalpy of the boiler feedwater), minus (the specific enthalpy of the cooling water returning from the slag cooler – the specific enthalpy of the cooling water at the inlet of the slag cooler), multiplied by the volume of cooling water used in the slag cooler. The gross efficiency of the boiler is equal to … / … × 100%
Thank you very much. I have just graduated and am starting out in this field, so I have many questions that require guidance from those with more experience. Thank you; if it’s convenient for you, I would like to add you on QQ so that I can ask you detailed questions. Thank you again.
Hello, my QQ number is: 740293171. If it’s convenient for you, please add me. Thank you! Thank you!