Request the calculation process and results for the explosion limit of coke oven gas
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According to the regulations, the oxygen content in the gas supplied to the coke oven gas compressor from the gas holder should be less than 0.5%; if it exceeds 0.8% and continues to rise, the system must be shut down. At atmospheric pressure, the explosion limit of coke oven gas is 5%–30%. Therefore, calculate the explosion limit of coke oven gas under the conditions of an initial temperature of 152°C, an initial pressure of 2.5 MPa, a pipe diameter of DN350, with the ignition energy determined based on the capabilities of common ignition sources, and assuming that the effect of inert gases can be ignored Components of coke oven gas: methane 25%, hydrogen 56%, carbon monoxide 8%, carbon dioxide 2%, nitrogen 3%; the remainder are organic gases, which can be ignored. I hope some expert can help with the calculation; it would be great if a detailed step-by-step process could be provided.
Hello, have you resolved this issue? I’m facing the same problem; could we discuss it?
This is indeed a tricky issue in the design of comprehensive utilization of coke oven gas. Qualitatively speaking, increasing the pressure to no more than 2.0 MPa results in a slight decrease in the explosion limit; as to whether it drops to 3 or even lower, no calculation method has yet been found. Personally, I think such values should be obtained through experimental testing. Based on engineering experience, when the concentration of the feed gas is below 2%, it should be outside the explosion limit. This is for reference only – it’s an empirical value that lacks the support of calculation methods and experimental data
Approximate calculations can be performed by summing the lower explosion limits of individual components under specific temperature and pressure conditions, in proportion to their respective amounts