Which emits more SOx per unit amount of electricity produced; a coal-fired plant with a 90% efficient SO2 scrubber or an oil-fired plant with m scrubber? Assume the coal has a heat content of 13,000 Btu/lb and contains 3.5% sulfur, and that the oil has a heat content of 6.0(10)* Biu/barrel (42 gallons) and contains 0.9% sulfur, Assume the oil has a specific gravity of 0,92.

Which emits more SOx per unit amount of electricity produced; a coal-fired plant with a 90% efficient SO2 scrubber or an oil-fired plant with m scrubber? Assume the coal has a heat content of 13,000 Btu/lb and contains 3.5% sulfur, and that the oil has a heat content of 6.0(10)* Biu/barrel (42 gallons) and contains 0.9% sulfur, Assume the oil has a specific gravity of 0,92.

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter7: Thermal Processes

Section: Chapter Questions

Problem 7.10P: Cellulose is to be burned in a waste-to- energy fadlity. The chemical equation for cellulose C6...

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Cellulose is to be burned in a waste-to- energy fadlity. The chemical equation for cellulose C6 H10O5is the atomic weights of C, H, and O are 12, 1, and 16. respectively. a. Calculate the stoichiometric oxygen necessary for the combustion of cellulose. b. Calculate stoichiometric air.
A furnace uses a coal with the following composition (C = 75.9 wt%, H = 5 wt %, O = 8.6 wt%, N = 0.5 wt%, and ash = 10 wt%). Combustion happens with 35% excess air to form CO2, H2O, and NO2 gases. Assume conversion of all fuel nitrogen to NO2, and that no thermal NO2 (wet basis) forms. Calculate the NO2 gases concentration (ppm) in the dry exhaust.
A 10 g sample of mixed MSW is combusted in a calorimeter having a heat capacity of 8850 cal/°C. The temperature increase in combustion is 3.35°C. Calculate the heat value of the sample in cal/g.
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A 600 MW coal-fired power plant has an overall thermal efficiency of 38%. It is burning coal that has a heating value of 12,000 Btu/lb, an ash content of 5%, a sulfur content of 3,0%, and a CO2 emission factor of 220 IWmillion Bin. Calculate the heat emitted to the environment (Btu/sec), the coal feed rate (tons/day), the degree (%) of sulfur dioxide control needed to meet an emission standard of 0,15 lh SO2/inillion Bin of heat input, and the CO2 emission rate (metric tons/day).
As a plant maintenance engineer, you are required to purchase a 3,000 L tank of liquid butane to heat a maintenance building during the winter. You are concerned about the tank rupture and the possibility of a vapour cloud explosion of all the butane. How far (in metres) must the tank be from the maintenance building to ensure that it will receive only partial demolition in the event of an explosion? The specific gravity of liquid butane is 0.6, and the energy of explosion for butane is 510 kcal/gm-mol. Assume the explosion efficiency is 10 % in this case.
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It is found in a water sample that it has insufficient alkalinity and therefore soda ash (Na,CO3) is added in water. Calculate the amount of CO2 produced per day in kg if 10 MLD of water needs 333 mg/1 dose of alum. (Assume no reaction takes place before soda-ash addition).
A coal containing 2% sulfur is burned completely to ash in a brick kiln at a rate of 30 kg/min. The sulfur content in the ash was found to be 6% of the initial amount of sulfur present in the coal fed to the brick kiln. The molecular weights of S, H and O are 32, 1 and 16 g/mole, respectively. The annual rate of sulfur dioxide (SO,) emission from the kiln (in tonnes/ year, up to two decimal places) is
A steel pipe is having an ID of 13.25" is to be designed to carry 48,000 bbl of oil per day from a midcontinent field refinery 580 miles from the source. The difference in elevation on the two ends of the line is negligible. AT an average temperature involved, the oil has an absolute viscosity of 50 cP and a specific gravity of 0.87. Determine the actual power requirement (in hp) if the efficiency is 65%.
2 m^3/min of a light oil are to be heated from 20C to 100C (with zero vaporization) in an exchanger using 250 kPa steam of 90% quality. The heat losses to the surrounding air have been estimated to be 5% of the heat transferred from the condensing steam to the oil. If the steam condensate leaves at its saturation point, what mass of steam per hour will be used in the exchanger? For light oil, Specific gravity= 0.88Specific heat= 2.00 kJ/kg-KFor steam at 250 kPa,Saturated liquid: hf= 535.49 kJ/kg vf= 0.001067 m^3/kgSaturated vapor: hg= 2716.8 kJ/kg vg= 0.7188 m^3/kg
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