The meaning of the Propylene explosion curve in the reactor for the oxidation of propylene to acrylic acid

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1. Calculation of the explosion zone for propylene reactions. The formula for the explosion zone is: PRIK = (PRI + PS) * 0.0102 – 1.033. Please explain what the physical quantities represented by the symbols PRI, PRIK, and PS mean, as well as the units used in this formula. 2. The upper limit of the explosion limit for a single reactor is: FNYR1 = (-A*(*NT/100) + B*(THTS-C) + D + E*PRIK)*100. The lower limit of the explosion limit for a single reactor is: FNYR2 = (I*(*NT/100) + J*(1-K*(THTS-C)))*100. The pressure head related to the explosion limit of a single reactor is: FNXR = F*(PRIK+1.0) + G*THT + H)*100. The function of the mixer is to thoroughly mix the raw materials; the feed materials include propylene, air, and water vapor. The reaction and explosion zone is the area enclosed by FNYM1 – FNXM – FNYM2 in Figure 3-1. Based on the process conditions, the explosion zone can be determined as follows: The upper limit of the explosion limit for the mixer is: FNYM = (-A*(*NT/100) + B*(TM-C) + D + E*PRIK)*100. The lower limit of the explosion limit for the mixer is: FNYM2 = (I*(*NT/100) + J*(1-K*(TM-C)))*100. The pressure head related to the explosion limit of the mixer is: FNXM = F*(PRIK+1.0) + G*TM + H)*100. The specific values of A, B, C, D, E, F, G, H, and I in these formulas are as follows.