Hello! Question for Chemical Engineering Analysis! Can anyone explain why these

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Hello! Question for Chemical Engineering Analysis! Can anyone explain why these answers are correct or how to go about finding them? Or if you disagree with the answers can you explain why? I'm lost! Thanks :-)

11. Coal containing 5.0 wt% s is burned at a rate of 1250 lbm/min in a boiler furnace. All of the sulfur in the coal is oxidized to SO2. The product gas is sent to a scrubber in which most of the SO2 is removed, and the scrubbed gas then passes out of a stack. An Environmental Protection Agency (EPA) regulation requires that the gas in the stack must contain no more than 0.018 lbm SO2/lbm coal burned. To test compliance with this regulation a flowmeter and an SO2 analyzer are mounted in the stack. The volumetric flow rate of the scrubbed gas is found to be 2867 ft /s, and the SO2 analyzer reading is 37. Calibration data for the analyzer are given in the table below. SO2 Analyzer Calibration Data C (g SO2/m 3 gas) 0.30 0.85 2.67 7.31 18.20 30.00 Reading (0-100 scale) 10 28 48 65 81 90 Determine the equation that relates S02 concentration in lb/ft' to analyzer reading Ans. C'(Ibm SOJr) = 1.055x10-5 e0.0575R a. b. Determine the lbm SO2/lbm coal burned in the process to check whether it complies with the EPA regulation. Ans. 0.012 Ibm SO2/lbm coal What percentage of the SO2 produced in the furnace is removed in the scrubber? Ans. 88% c.

Explanation / Answer

you must start with a graphic with the values of the calibration, the grapic shuld be concentration (X axis) vs volumetric flow, do a trendline and get the ecuation of the relation, that is the most important part but i'm missing fom the calibration data what is the reading meaning? it dindnt say the units so i dont realy know what to do with that

but when you get the ecuation the only thing you have to do is put your lecture in te ecuation (x value) and that get you the concentration

to know the relation betwen So2 / Coal at the begining says tha you have 5g sulfur/ 100 g coal so you just have to do the relation

and for the final question you know that all of the sulfur in the coal is oxidized and you know the amount of SO2 caugth in the scrubber

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