air pollution control technology handbook

... Brief History of the Air Pollution Problem Federal Involvement in Air Pollution Control Characterizing the Atmosphere Recipe for an Air Pollution Problem 1.4.1 Sources of Air Pollution 1.4.2 Meteorological ... Technologies Handbook Chang Ho Oh The MEMS Handbook Mohamed Gad-el-Hak Air Pollution Control Technology Handbook Karl B Schnelle, Jr and Charles A Brown Forthcoming Titles Biomedical Technology ... responsible for air pollution control process design and air permitting projects for various clients Also, he is an instructor for the short course on Designing Air Pollution Control Equipment...

Ngày tải lên: 11/08/2014, 06:22

... 1970 amendments established a program of technology- based NSPS so that any new source of air pollution would be required to apply effective air pollution controls New Source Performance Standards ... and were not required to retrofit pollution controls Existing sources that are modified are considered new sources, so old plants have to upgrade their air- pollution control equipment as the plant ... Non-Attainment Areas A new air pollution source that wishes to locate in an area that does not meet the NAAQS is precluded from doing so, unless a net decrease in air pollution can be demonstrated...

Ngày tải lên: 11/08/2014, 06:22

... of air pollution Often the selection of control technology does not depend on whether a PSD review is triggered because the same control technology will be required in any case BACT is a technology- based ... “available” control technology This step takes some research As a minimum, research should include EPA’s Office of Air Quality Planning and Standards Technology Transfer Network Clean Air Technology ... thorough technology and economic evaluation But as control technology improves, BACT may become more stringent than NSPS 3.2.1 STEP 1: IDENTIFY CONTROL TECHNOLOGIES First, potential control technologies...

Ngày tải lên: 11/08/2014, 06:22

... ground cools off faster than the air Convection heat transfer between the lower air layer and the ground causes the air close to the ground to become cooler than the air above, and a radiation inversion ... upper air radiation inversion, and high ground concentrations will be found in the early morning urban fumigation 4.1.3 PRINCIPAL SMOKE-PLUME MODELS Even though the objective of air pollution control ... surface of the earth becomes warmer than the air above it This causes the air immediately next to the earth to be warmed by convection The warmer air tends to rise and creates thermal convection...

Ngày tải lên: 11/08/2014, 06:22

... gas volumetric flow rates in small pipes and ducts Gas analysis for carbon dioxide, oxygen, excess air, and dry molecular weight Determination of oxygen and carbon dioxide concentrations in emissions ... delivery tank using pressure–vacuum test Certification and auditing of wood heaters Measurement of air- to-fuel ratio and minimum achievable burn rates for wood-fired appliances 10B 11 12 13A 13B 14...

Ngày tải lên: 11/08/2014, 06:22

... REFERENCE METHODS AND CONTINUOUS MONITORING In order to evaluate the current air quality and the effect of air pollution control measures, most larger communities maintain monitoring networks The ... Wednesday, September 5, 2001 9:46 PM 6.6 TYPICAL AIR SAMPLING TRAIN A typical air pollution sampling train is applicable to the intermittent collection of an air sample containing either gaseous or particulate ... of a general continuous air- quality monitor The device contains: Primary air- moving device, usually a vacuum pump, to pull the air sample through the instrument Flow -control and -monitoring device,...

Ngày tải lên: 11/08/2014, 06:22

... Index and the Chemical Engineering Plant Cost Index Specific to the air- pollution control industry is the Vatavuk Air Pollution Control Cost Index.1 An index is used to convert a known cost at one ... Cost Index can be used from a baseline date of 1926 Vatavuk Air Pollution Control Cost Indexes are provided for specific air- pollution control devices, including carbon adsorbers, catalytic incinerators, ... RESOURCES The OAQPS Control Cost Manual does not discuss all air- pollution control devices, nor does it cover large, complex air- pollution control systems such as flue gas desulfurization systems Traditional...

Ngày tải lên: 11/08/2014, 06:22

... Nair’s method leaves the air pollution control process designer with the question: What is an acceptable and feasible design? The authors present the material in this handbook to assist the air ... PM Data: Air density at 500°F: air = 0.0412 lbm ft Air specific heat: C P avg = 0.241 BTU lbm - °F Water specific heat C P avg = 1.0 BTU lbm - °F Air enthalpy at 1: H1 = 231.1 BTU lbm Air enthalpy ... estimation Start with the air pollution control equipment, then add the needed appurtances such as ducting, piping, pumps, fans, and tanks Finally, the instrument and automatic controls can be added...

Ngày tải lên: 11/08/2014, 06:22

... design that will provide the desired pollution control and meet the profitability objective set as the rate of return As pointed out above, in some cases a pollution control apparatus must be built ... a profitability analysis In carrying out the design, it is recommended to set a budget for pollution control equipment Then make as accurate a cost estimate as possible Keep in mind maintaining ... account the value of the equipment when it reaches obsolescence or must be replaced because of new technology Assets before 1981 could be depreciated using the double declining balance method From...

Ngày tải lên: 11/08/2014, 06:22

... gas stream is discharged to the atmosphere Both of these operations are controlled by thermodynamic equilibrium In pollution control, the concentrations of gases to be treated are relatively low ... 120–130°F and the possibility of exothermic reactions exist REFERENCE U.S EPA Handbook: Control Technologies for Hazardous Air Pollutants, EPA/625/691/014, Cincinnati, OH, 1991 © 2002 by CRC Press ... 2001 9:51 PM FIGURE 10.3 Cross-flow absorber operation will build up to flooding Contact time is controlled by the bed depth and the gas velocity In countercurrent flow, mass transfer driving force...

Ngày tải lên: 11/08/2014, 06:22

... Proceedings, Control of Specific Toxic Pollutants, Conference, February 1979, Gainesville, FL, Air Pollution Control Assoc., Pittsburgh, PA, 1979, 414–433 Crocker, B B and Schnelle, Jr., K B., Air pollution ... 2001 10:16 AM 18 lbs H O lb moles H O lb moles H O L = 2.70 × 29 lbs air G lb moles air lb moles air lbs H O L = 1.6759 lbs air G Calculate the superficial velocity from Figure 11.12 The abscissa ... an air emission Therefore, the absorbing solutions will also be dilute THE PROBLEM An air stream from a electronic circuitry manufacturer contains 50 ppm of a VOC which must be treated The air...

Ngày tải lên: 11/08/2014, 06:22

... some of the common properties of adsorbents A description of these common adsorbents for air- pollution control follows Activated carbon: This is made by carbonization of coconut shells, fruit ... 1947 Ufrecht, R H., Sommerfeld, J T., and Lewis, H C., Design of adsorption equipment in air pollution control, J.A.P.C.A., 30(42), 1348, 1980 10 McCleod, H O and Campbell, J M., Soc Petrol Engrs ... PROCESS For example, in the stagewise drying of air with silica gel, the silica gel is contacted countercurrently in the upper part of the tower with the air to be dried The contact takes place on...

Ngày tải lên: 11/08/2014, 06:22

Ngày tải lên: 11/08/2014, 06:22

Ngày tải lên: 11/08/2014, 06:22

Ngày tải lên: 11/08/2014, 06:22

Ngày tải lên: 11/08/2014, 06:22

Ngày tải lên: 11/08/2014, 06:22

Ngày tải lên: 11/08/2014, 06:22

Ngày tải lên: 11/08/2014, 06:22

Ngày tải lên: 11/08/2014, 06:22