Flue gas (the gas that leaves a smoke stack after combustion) has a significant amount of...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Flue gas (the gas that leaves a smoke stack after combustion) has a significant amount of COz that is typically released to the atmosphere. The composition of the hot combusted gases coming out of a coal-fired power plant is 18.0% CO, 3.0% O2, and 79.0% Na (all percentages are on a mass per mass basis). The first step in the process is to pass the gases through a cooler, with the exit from the cooler fed to an absorption column to remove the CO. before exhausting the gas into the air Our interest is in the cooler A) Write down the total and species (CO, N2, and O2) mass balances for the cooler if the inlet stream (the combusted gases) has a volumetric flow rate of 356 m/s (T = 420 °C and P = 1.98 atm) and the outlet stream has a volumetric flow rate of 657 m/s (T = 36 °C and P = 1.05 atm). To simplify the analysis you can assume that the average molecular weight of the gases in all streams is the same with a value of 29.8 g/mol. %3D %3D B) A shift operator has recently added a monitor to the exit gas stream from the cooler and has found that the steady-state exit CO, concentration is 8.2% by volume (compared to the 18.0% in the inlet). This low CO, concentration was a surprise - the operator thinks that this could be due to an error in the exit CO2 measurement or presence of an air leak into the cooler. Determine which of these is the most likely explanation (and defend your logic). could be due to the C) Ifthe problem in part Bis an air leak, evaluate the magnitude of the air flow rate into the cooler in m/s (Tar = 25 °C, Par = 1 atm). If the problem is the CO2 measurement, evaluate the correct CO2 concentration in the exit stream (assuming no air leak). %3D %3D Flue gas (the gas that leaves a smoke stack after combustion) has a significant amount of COz that is typically released to the atmosphere. The composition of the hot combusted gases coming out of a coal-fired power plant is 18.0% CO, 3.0% O2, and 79.0% Na (all percentages are on a mass per mass basis). The first step in the process is to pass the gases through a cooler, with the exit from the cooler fed to an absorption column to remove the CO. before exhausting the gas into the air Our interest is in the cooler A) Write down the total and species (CO, N2, and O2) mass balances for the cooler if the inlet stream (the combusted gases) has a volumetric flow rate of 356 m/s (T = 420 °C and P = 1.98 atm) and the outlet stream has a volumetric flow rate of 657 m/s (T = 36 °C and P = 1.05 atm). To simplify the analysis you can assume that the average molecular weight of the gases in all streams is the same with a value of 29.8 g/mol. %3D %3D B) A shift operator has recently added a monitor to the exit gas stream from the cooler and has found that the steady-state exit CO, concentration is 8.2% by volume (compared to the 18.0% in the inlet). This low CO, concentration was a surprise - the operator thinks that this could be due to an error in the exit CO2 measurement or presence of an air leak into the cooler. Determine which of these is the most likely explanation (and defend your logic). could be due to the C) Ifthe problem in part Bis an air leak, evaluate the magnitude of the air flow rate into the cooler in m/s (Tar = 25 °C, Par = 1 atm). If the problem is the CO2 measurement, evaluate the correct CO2 concentration in the exit stream (assuming no air leak). %3D %3D
Expert Answer:
Answer rating: 100% (QA)
It should be noted that an Ideal gas Mass ratio and the molar r... View the full answer
Related Book For
Environment
ISBN: 978-1118875827
9th edition
Authors: Peter H. Raven, David M. Hassenzahl, Mary Catherine Hager, Nancy Y. Gift, Linda R. Berg
Posted Date:
Students also viewed these chemistry questions
-
A coal power plant has a heat rate of 9700 Btu/kWh using coal which has an energy content of 24,000 kJ/kg. Burning coal results in about 60% carbon (released as CO2 or CO), 2% sulfur (released as SO2...
-
Your team is to provide an economic evaluation based on a budget developed from costs of a previous facility half the size of the new one. The new facility will be an 800 megawatt (MW) coal fired...
-
Pentron Data Corporation has a significant amount of excess cash on hand and has decided to make a long-term investment in either debt or equity securities. After a careful analysis, the investment...
-
Jim Redman purchased a car from Bill Branch Chevrolet. However, the car had been reported stolen and Jim was unable to secure a good title. Redman sued Bill Branch Chevrolet on the breach of the...
-
Multiple jobs can run in parallel and finish faster than if they had run sequentially. Suppose that two jobs, each needing 20 minutes of CPU time, start simultaneously. How long will the last one...
-
Part 1 Kristen, 25 years old, started her first job out of training in the operating room (OR) at a local hospital. During the routine screenings for hire, it was discovered that Kristen was...
-
In general, the creep compliances, \(S_{i j}(t)\) and the relaxation moduli, \(C_{i j}(t)\) are not related by a simple inverse relationship. Show that only when \(t ightarrow 0\) and when \(t...
-
Modify the Solow growth model by including government spending as follows. The government purchases G units of consumption goods in the current period, where G = gN and g is a positive constant. The...
-
Gitano Products operates a job-order costing system and applies overhead cost to jobs on the basis of direct materials used in production (not on the basis of raw materials purchased). Its...
-
Assignment You may have to use Scilab/Matlab/Python for computation wherever necessary. Each student should make a choice of one of the above software, and stick to that throughout the assignment....
-
Antonio owns land held for investment with a basis of $28,000. The city of Lafayette exercises the right of eminent domain and Antonio receives a payment of $48,000. What is Antonio's realized gain?...
-
In May 2015, Ruth sold a freehold building which she had used exclusively for business purposes. The building was sold for 220,000, realising a chargeable gain of 42,500. In the following month, Ruth...
-
Select an agreement from Table 19.1 and investigate the details. For additional readings and websites pertaining to the material inthis chapter, see www.mhhe.com/field8e. Name of Agreement Marine...
-
Roseanne is a Scottish taxpayer. She starts trading on 1 July 2020 and prepares accounts for the 16 months to 31 October 2021. The adjusted trading profit for this period is 38,560. Her only other...
-
Joan has been a full-time director of Sunnybank Pursuits Ltd (a trading company) since 2001 and has owned 10% of the company's ordinary shares since 2002. She retired in February 2021 and gave all of...
-
Glenda has been self-employed for many years and prepares accounts to 31 March each year. Her adjusted profits (after deduction of capital allowances) are currently running at approximately 80,000...
-
Strategic acquisitions and the accelerated integration of those acquisitions are a vital capability of Cisco Systems Cisco Systems is in the business of building the infrastructure that makes the...
-
At Glass Company, materials are added at the beginning of the process and conversion costs are added uniformly. Work in process, beginning: Number of units Transferred - in costs Direct materials...
-
Why do we have to distinguish between mineral resources and mineral reserves when making projections about how long a specific mineral will be available? Why it is difficult to obtain an accurate...
-
Biological control is often much more successful on a small island than on a continent. Offer at least one reason why this might be the case.
-
Taking a systems perspective, suggest how to prevent BOD from animal sewage and milk processing of a dairy farm from reaching an adjacent river.
-
You have an intrinsic semiconductor, a \(p\)-type semiconductor, and an \(n\)-type semiconductor. The doped samples each contain the same number density of dopant atoms. Which of the three...
-
You have ordered a \(10.00 \mathrm{~mm} \times 10. 00 \mathrm{~mm} \times 2. 000 \mathrm{~mm}\) sheet of pure silicon from a laboratory supply company, but the sheet the company sends has a mass of...
-
The circuit diagram for a rectifier is sometimes drawn with a resistor in the center. Would the rectifier function if this resistor were replaced by a capacitor?
Study smarter with the SolutionInn App