I find flaring, like DCA, tends to trip up the overconfident. This one is tricky; it tests your knowledge of "sour gas" and how combustion works chemically. Plus, it's a unit nightmare.
Sources include the Guidebook 8 FAC 9 (there isn't much else out there that I've found) and this problem can be solved using
the SPE Reference pages 189 and 191 only if you already know what you are doing. A word to the wise: spend time practicing emission-type problems using the new SPE resource, because you will likely need to know where to go quickly and you won't have the Guidebook available to hold your hand on a closed book exam.
with sour gas defined as >4ppm, why is the answer not >.6 tons/yr, bringing option D into play?
ReplyDeleteThis problem was: A facility flared 4.9 MMSCFD of just barely sour gas. The sulfur dioxide (atomic numbers of S and O are 32 and 16 respectively) emission (tons per year) is closest to: A) 0.4, B) 0.5, C) 0.6, D) 0.7. Looking at the Kindle I see I missed the "just barely". Nice catch. fixing it now.
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