Given the following temperature and elevation data, determine the atmospheric st

Question

Given the following temperature and elevation data, determine the atmospheric stability and explain what type of plume behavior you would expect. Show all work: Elevation (m) Temperature (oC) 16.0 8.24 184.0 17.03 Question 1: A coal-fired electricity generation facility burns coal at a rate of 1.433 lbs/sec. The coal has a sulfur content of 3.25% by mass. Assuming that all but 5.00% of the sulfur is oxidized according to the reaction S + O2 SO2, find the emissions rate (E) of sulfur dioxide (SO2) in g/sec.

Explanation / Answer

adiabatic lapse rate, dT/dZ >0 the atmosphere is stable or else it is unstable

(17.03-8.24)/( 184-16)=0.052>0 and hence the atmosphere is stable.

: A coal-fired electricity generation facility burns coal at a rate of 1.433 lbs/sec. The coal has a sulfur content of 3.25% by mass. Assuming that all but 5.00% of the sulfur is oxidized according to the reaction S + O2 SO2, find the emissions rate (E) of sulfur dioxide (SO2) in g/sec.

flow rate of coal= 1.433 lb/sec, 1 lb =0.4535 kg, 1kg= 1000gm, 1 lb= 0.4535*1000 gm= 453.5 gm

flow rate of coal= 1.433* 453.5 gm/sec =650 gm/sec

it contains 3.25% S by mass, mass of S= 650*3.25/100 =21 gm/sec

moles of S= mass flow rate/ molar mass= 21/32 gmoles/sec=0.66 gmoles/sec

the combustion reaction S+O2----->SO2

1 mole of S reacts with 1 mole of oxygen to produce 1 mole of SO2

hence moles of SO2= 0.66 gmoles/sec if complete combustion takes place. but 95% of S is only combusted.

hence moles of SO2 formed =0.66*0.95 =0.63 gmoles/sec

molar mass of SO2= 32+32= 64 g/mole

mass of SO2 formed =moles/sec* molar mass =0.63*64 g/sec=40.32 g/sec

Related Questions

Navigate

• Browse (All)
• Browse G
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.