Air Pollution Control Engineering: Handbook of Environmental Engineering by Lawrence K. Wang, Norman C. Pereira, Yung-Tse Hung | 9781588291615 | 1588291618 | Holooly

Air Pollution Control Engineering: Handbook of Environmental Engineering

96 SOLVED PROBLEMS

Question: 5.17

In this example, the definition and classification of air pollutants is discussed. Several terms commonly encountered when discussing air pollutants need to be defined: • Volatile organic compounds (VOCs) • Semivolatile organic compounds (SVOCs) • Volatile inorganic compounds (VICs) • Semivolatile ...

Verified Answer:

A. Organic compounds that have a vapor pressure of...

Question: 10.10

Canister carbon systems are typically used for emission stream flow rates less than 2000 scfm. The adsorption time in this example is based on the total volume of recovered solvent. The HAP pollutant is acetone and the given data are as follows: Maximum flow rate, Qe = 2000 scfm Temperature, Te = ...

Verified Answer:

The HAP density,

D_{HAP}

, is calcul...

Question: 10.9

Determine the steam requirements of a fixed-bed regenerative carbon adsorption system for air emission control. The given data are as follows: RE = 95% HAPo = 50 ppmv St = 0.3 lb steam/ lb carbon (see Table 3) θreg = 2 h (see Table 3) Abed = 181 ft² ...

Verified Answer:

Assume

θ_{dry-cool} = 0.25

h. Use E...

Question: 10.8

Outline the step-by-step procedures for calculating the steam requirements (lb steam/min-ft²), of a fixed-bed carbon adsorption system. ...

Verified Answer:

The step-by-step procedures for calculating the st...

Question: 10.7

Outline the procedures for determining the carbon requirement of a canister system (Fig. 2). ...

Verified Answer:

The carbon requirement for a canister system can b...

Question: 10.6

The emission stream inlet HAP concentration is 1000 ppmv with a control requirement of 95%. Determine the adsorption cycle time, regenerative cycle time, and the steam requirement for carbon regeneration. ...

Verified Answer:

The air emission stream inlet HAP concentration is...

Question: 10.5

Outline the methodology for determining the pretreatment requirements of a gas-phase carbon adsorption system. Address the following questions: 1. Is cooling necessary if the temperature of the air emission stream is 90ºF? 2. Is dehumidification necessary if the relative humidity of the air ...

Verified Answer:

Because the

T_{e} = 90

ºF,

R_...

Question: 10.4

Outline the methodology for the determination of the pretreatment requirements of a gasphase carbon adsorption system. ...

Verified Answer:

The methodology for determining the carbon adsorpt...

Question: 10.3

Design a two-bed regenerative carbon adsorption system for removal of HAP from a gaseous emission stream. Given data are as follows: Maximum flow Rate, Qe = 15,000 scfm Temperature, Te = 90ºF = (90 + 460) ºR System pressure, P = 1 atm HAP molecular weight, M = 92 lb/lb-mol HAP emission stream ...

Verified Answer:

This example is based on a two-bed system and the ...

Question: 10.2

Outline the step-by-step procedures for design of a fixed-bed regenerative carbon adsorption system for control of an emission stream containing a hazardous air pollutant. ...

Verified Answer:

Step 1 Use Eq. (3) to calculate the amount of carb...

Loading...