A 600 MW pulverized coal-fired power plant of 40% efficiency uses coal with an ash content...

A 600 MW pulverized coal-fired power plant of 40% efficiency uses coal with an ash content of 15% and a heating value of 26,700 kJ/kg. Assume 35% of the ash content goes up the stack as particulate matter in the flue gas. The PM emission is controlled by an ESP which has the following efficiencies and weight distribution in the given size ranges. Find the fly ash emitted in g/s.

Expert Solution

Quantity of energy input by pulverized coal to operate power plant at full capacity = Power generation/ Efficiency

= 600 MW / 0.40

= 1500 MW

Using [1MW = 1,000 kJ per second]

= 1500*103 (kJ/sec)

Quantity of Coal required = Energy supplied / heating value of coal

= 1500*103 (kJ/sec) / 26700 (kJ/kg)

=56.1797 (kg/sec)

Total ash generated = 15% of 56.1797 (kg/sec)

= 8.4269 (kg/sec)

Ash emitted as Flyash= 35% of Total ash generated

=8.4269*0.35 (kg/sec)

=2.9494 (kg/sec)

= 2949.4 (gm /sec) -- This will be collected by ESP based on efficiency.

Amanda K answered 7 months ago

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...

Consider a 400-MW, 32 percent efficient coal-fired power plant that uses cooling water withdrawn from a...

Consider a 400-MW, 32 percent efficient coal-fired power plant that uses cooling water withdrawn from a nearby river (with an upstream flow of 10-m3/s and temperature 20 °C) to take care of waste heat. The heat content of the coal is 8,000 Btu/lb, the carbon content is 60% by mass, and the sulfur content is 2% by mass. How much electricity (in kWh/yr) would the plant produce each year? How many pounds per hour of coal would need to be...

1. Consider a 400-MW, 32 percent efficient coal-fired power plant that uses cooling water withdrawn from...

1. Consider a 400-MW, 32 percent efficient coal-fired power plant that uses cooling water withdrawn from a nearby river (with an upstream flow of 10-m3/s and temperature 20 °C) to take care of waste heat. The heat content of the coal is 8,000 Btu/lb, the carbon content is 60% by mass, and the sulfur content is 2% by mass. v. If the cooling water is only allowed to rise in temperature by 10 °C, what flow rate (in m3/s) from...

1000 MW coal-fired power plant emits SO2 at the legally allowed limit of 6.47 x 108...

1000 MW coal-fired power plant emits SO2 at the legally allowed limit of 6.47 x 108 g/sec (equivalent to 0.6 lb per 106 BTU). The stack has an effective height of 300 m. It is a cloudy summer day and the wind speed at 10-m is measured at 2.5 m/sec. What is the ground level concentration of SO2 4 km directly downwind. Assume a value for “p” of 0.25.EnvEng please help me solve! thanks!

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...

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...

Assume you have a coal fired plant that produces 300 MW. The plant is 30% efficient....

Assume you have a coal fired plant that produces 300 MW. The plant is 30% efficient. There is 0.2 lbs. of sulfur produced per BTU. There is 5% residual ash created. Assume you live 4km downstream to the plant. Its is a cloudy summer night with wind of 2.5 m/s. The effective stack height is 100m What is the feed rate of coal to the plant (lbs. per hour)? How much sulfur is produced per hour? What is the concentration...

A coal-fired power plant uses 400 ◦C steam to turn a turbine. Afterwards, the steam is...

A coal-fired power plant uses 400 ◦C steam to turn a turbine. Afterwards, the steam is condensed at a temperature of 25 ◦C. If the plant burns 1 million kg of coal in one hour, running at maximum efficiency, what is the amount of work that could be done by the turbine in that hour? (Coal contains 27 kJ of energy per g).

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...

A coal-fired power plant proposes to burn 3% sulfur coal with a heating value of 11,000...

A coal-fired power plant proposes to burn 3% sulfur coal with a heating value of 11,000 Btu/lb. If the plant is to meet the standard of performance given by EPA New Source Performance Standards (NSPS), what percent cleanup is required for SO2? What percent sulfur could the coal contain if the standards are to be met with no clean-up devices?

Question