Seeking help with calculations for a heating furnace
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The flue gas resulting from the combustion of blast furnace gas at 300,000 Nm³/h under standard conditions currently has a temperature of 150°C. It is necessary to mix the high-temperature flue gas resulting from the combustion of blast furnace gas into this 300,000 cubic meter volume of flue gas in order to provide heating; the temperature of the mixed flue gas must reach 230°C. How many cubic meters of blast furnace gas are required to meet the requirements? It is known that the low calorific value of blast furnace gas is 6 million kcal. Could you please provide the calculation process, or suggest some books that contain information and calculations on this topic? Thank you!
Based on the information you provided, we need to calculate the volume of blast furnace gas that enters the heating furnace. First, we need to know the mixing ratio of the two types of flue gas. Assuming that x cubic meters of blast furnace gas need to be mixed with 300,000 Nm?/h of gas, then the total volume of the mixed gas is 30 + x Nm?/h. According to the law of conservation of energy, the following equation can be derived: 6 million x = 30 * 150 + x * 230. By solving this equation, the value of x can be determined, and thus the volume of blast furnace gas required can be found. If you want to learn more about the calculation methods for heating furnaces, you can refer to relevant professional books such as \"Industrial Furnaces and Melting Furnaces\" and \"Furnace Temperature Control and Computer Application Technology\". These books will provide detailed information on the design and calculation methods of heating furnaces. .
Hello, why can’t I find these two books on the website?
This is the calculation for flue gas recirculation; it is necessary to know how much flue gas at what temperature should be mixed in.