How to calculate the H2O/C water-carbon ratio? ? ? ?
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Our facility’s natural gas flow rate is 15,000 NM3/h, and the steam flow rate is 54 T/h. How can the water-to-carbon ratio be calculated? ? This post was last edited by mountain16 on 2008-9-9 17:32]
The ratio of the number of moles of water molecules to the number of moles of carbon atoms in natural gas
To calculate the water-carbon ratio, the composition of natural gas is essential.
The volumetric flow rate of water vapor (NM3) = mass flow rate (kg) x 1.24. Natural gas should consist mainly of methane, which is of C1 type; for other components, multiply by the number of carbon atoms present. Just find the ratio
The formula for calculating the volumetric flow rate of water vapor (in NM3) is: Volume flow rate = Mass flow rate (kg) / 18 (molar mass) * 22.4 / ((273.15 + 25) / 273.15). This is approximately equal to Mass flow rate (kg) * 1.24
As a rough estimate, it is sufficient to treat all components of natural gas as methane; for more accurate calculations, it is necessary to know the actual composition of natural gas. Use the calculation formula from the 5th floor.
Without knowing the components of natural gas, it’s not possible to calculate the water-to-carbon ratio; however, the water-to-gas ratio can be calculated. By dividing 54,000 by 18, then multiplying by 22.4, and finally dividing by 15,000, the result can be obtained.
Based on its body composition, calculate the ratio of water molecules to carbon atoms.
54*1000x22.4/18*15000
Reply to 9# xu470682850: The water-carbon ratio displayed on our DCS system shows a correction value of 0.9 less than that calculated by your method. What is the reason for this?
It is simply the mole number of water molecules divided by the mole number of carbon atoms in natural gas.