Question

In: Other

Gaseous ammonia can be injected into the exhaust stream of a coal-burning power plant to reduce...

Gaseous ammonia can be injected into the exhaust stream of a coal-burning power plant to reduce the pollutant NONO to N2N2 according to the following reaction:
4NH3(g)+4NO(g)+O2(g)→4N2(g)+6H2O(g)4NH3(g)+4NO(g)+O2(g)→4N2(g)+6H2O(g)
Suppose that the exhaust stream of a power plant has a flow rate of 335 L/sL/s at a temperature of 955 KK, and that the exhaust contains a partial pressure of NONO of 23.2 torrtorr .

Part A

What should be the flow rate of ammonia delivered at 765 torrtorr and 298 KK into the stream to react completely with the NONO if the ammonia is 65.0% pure (by volume)?

Solutions

Expert Solution

Step 1

Given that the pressure of NO, PNO = 23.2 torr.

Convert into atm where 1atm = 760torr, so the 23.2 torr(1atm/760torr) => 0.0305 atm

Power plant volume flowrate () NO = 335 L/s, temperature of NO(TNO) = 955 K.

By ideal gas equation, PV=nRT

For NO apply ideal gas equation,

PV = nRT

Divide both side by t we get,

P(V/t) = (n/t)RT

(n/t)NO = 0.1303 mol/s

Step 2

convert (n/t) ratio from NO to NH3 using the mole ratio based on the stoichiometric coefficient of the chemical equation.

the stoichiometric coefficient for NO and NH3 is the same(4) so we can write,

On cancellation of mol of NO we have,

(n/t)NH3 = 0.1303 mol NH3

Now find out the pressure of ammonia in atm which is given as 765 torr,

PNH3 = 765torr(1atm/760torr) => 1.01 atm

The temperature of NH3 = 298 K.

By applying ideal gas equation on NH3 we have, P(V/t) = (n/t)RT.

Find out the (V/t) for pure NH3,

(V/t)NH3 = 3.155 L/s

Now change the percentage into a decimal and divide quantity to get the ((V/t)NH3 for pure ammonia.

((V/t)NH3)/0.65 = (3.155L/s)/0.65 => 4.85 L/s Flow rate of ammonia at 765 torr.


Related Solutions

Gaseous ammonia can be injected into the exhaust stream of a coal-burning power plant to reduce...
Gaseous ammonia can be injected into the exhaust stream of a coal-burning power plant to reduce the pollutant NO to N2 according to the following reaction: 4NH3(g)+4NO(g)+O2(g)→4N2(g)+6H2O(g) Suppose that the exhaust stream of a power plant has a flow rate of 335 L/s at a temperature of 955 K, and that the exhaust contains a partial pressure of NO of 22.8 torr .What should be the flow rate of ammonia delivered at 750 torr and 298 K into the stream...
Your power plant emits nitrous oxides (NOx) into the atmosphere as a byproduct of burning coal....
Your power plant emits nitrous oxides (NOx) into the atmosphere as a byproduct of burning coal. While your scrubbers collect much of the pollutant before it leaves your smokestacks, they cannot get it all. You have an allowance of one hundred pounds of NOx per day. The state environmental commission shows up periodically to test whether you are staying within your allowance. If you are not within your allowance, you will have to purchase more allowance from a plant that...
A coal burning power plant in upstate New York has been the only provider of power in the region for many years.
A coal burning power plant in upstate New York has been the only provider of power in the region for many years. Recently, a plant that uses wind to create energy was built nearby. The wind plant produces less energy than the coal plant but at a lower cost. Will the coal plant be able to remain competitive in this new market environment?A. Yes, if the coal plant sells energy at a price below its marginal cost.B. Yes, if the...
Consider a 2,000 MWe(coal-burning power plant operating 24 hours a day at an efficiency of 30%....
Consider a 2,000 MWe(coal-burning power plant operating 24 hours a day at an efficiency of 30%. If the coal burned has 2.5% sulfur content and a thermal inversion exists, what SO2(concentrations, in mg/m3(will be achieved in one 24-hour day? Assume the inversion area is 10 km by 10 km and the air is released on a dry, minimum ALR, day at 50oC warmer than the surrounding air and the prevailing air temperature profile is +1.5oC/100m. 1 ton of coal generates...
A coal-fired power plant produces power  with costs . Each unit of power earns the plant ....
A coal-fired power plant produces power  with costs . Each unit of power earns the plant . Burning coal releases particulate matter (PM2.5), a pollutant that is known to cause heart disease, lung disease, and birth defects. The coal plant borders a wildlife sanctuary which sells tourism visits  for a price $30. However, the sanctuary's animals are getting sick due to the negative externality of PM2.5, such that the costs to the sanctuary are . The local government decides to tax the...
Consider a coal-fired steam power plant that produces 175 MW of electric power. The power plant...
Consider a coal-fired steam power plant that produces 175 MW of electric power. The power plant operates on a simple ideal Rankine cycle with turbine inlet conditions of 7 MPa and 550°C and a condenser pressure of 15 kPa. The coal has a heating value (energy released when the fuel is burned) of 29,300 kJ/kg. Assuming that 75% of this energy is transferred to the steam in the boiler and that the pump has an efficiency of 80% and the...
At a coal-fired power plant, assume that lignite coal is being burned as shown in the...
At a coal-fired power plant, assume that lignite coal is being burned as shown in the following stoichiometric combustion reaction equation, which assumes that the nitrogen in the lignite and in the air is all converted to NO and that combustion is complete: CH0.96O0.18N0.016S0.012 + x (O2 + 3.78 N2) → CO2 + 0.48 H2O + 0.016 NO + 0.012 SO2 + 3.78x N2 (a) What is the value of the coefficient, x? (b) To ensure complete combustion, air must...
Belchatow in Poland is the largest coal-burning plant in the world. It produces 27.5 terawatt-hours of...
Belchatow in Poland is the largest coal-burning plant in the world. It produces 27.5 terawatt-hours of electricity each year (1 terrawatt = 1 billion kilowatts). Show all of your calculation as you answer the following questions. 1. Determine the number of BTUs of heat requird to generate the electricity produced by Belchatow every day. Assume that 10,000 BTUs produce 1 kW-h-of electricity 2. How many pounds of coal are consumed by the power plant every year? Assume that 1 lb...
If a coal-fired power plant burns 2 kg of coal to produce electricity, and the electricity...
If a coal-fired power plant burns 2 kg of coal to produce electricity, and the electricity is used to power an elevator motor that is 60% efficient, how high can the elevator and passengers be lifted up if their total mess is 1500 kg? and then How many human workers using muscle power('energy servants") would be needed to lift the elevator up to the same height, if they had one minute to do so? Assuming that one energy servant is...
What are the major source of emissions in power plant and how can we reduce it?
What are the major source of emissions in power plant and how can we reduce it?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT