air pollution control equipment selection guide second edition

... Introduction Welcome to the Air Pollution Control Equipment Selection Guide The selection of air pollution control hardware can be a daunting task There are literally hundreds of equipment vendors offering ... CRC Press LLC chapter Air pollution control 101 Having spent more than 30 years in the air pollution control industry, I am still amazed by how the basics of air pollution control are misunderstood ... accurate reference book that will make the selection of air pollution control equipment easier for you © 2002 by CRC Press LLC Contents Chapter Air pollution control 101 It is separation technology...

Ngày tải lên: 11/08/2014, 09:21

... disposal © 2002 by CRC Press LLC STRIPPED AIR EXHAUST STRIPPED AIR EXHAUST STRIPPED AIR EXHAUST STEAM KEY ADSORBER ADSORBER ADSORBER CONDENSER SOLVENT LADEN AIR WATER DECANTER TANK FILTER PRODUCT ... steam, hot air, or an inert gas such as nitrogen The ancillary equipment includes dampers to swing the contaminant gas stream from one chamber to the other, and isolation valves and controls to ... WATER DECANTER TANK FILTER PRODUCT COOLER VENT CONDENSER COOLER SOLVENT LADEN AIR SOLVENT FREE AIR STEAM DRYING & COOLING AIR RECOVERED SOLVENT WATER MIXTURE RECOVERED SOLVENT Figure 2.3 Regenerative...

Ngày tải lên: 11/08/2014, 09:21

... ventilate their meat processing devices (cookers, etc.) into biofilters for odor control More intense odors are controlled using packed towers, tray towers, fluidized bed scrubbers, and varieties ... Figure 3.1 Biofilter (Monsanto Enviro-Chem Systems, Inc.) Biofilters have also been used to control the emissions of propane and hexane from the filling of aerosol cans These systems can actually ... compounds that are toxic to the bacteria, where the gas stream temperature and humidity can be controlled within a range suitable for sustaining the bacteria colonies, and where the concentration...

Ngày tải lên: 11/08/2014, 09:21

... voltage control cabinet Inside the cabinet is a voltage control and silicon control rectifier The voltage control flow of current through the silicon control rectifier Current from the silicon control ... precipitators Silicon control rectifiers: Silicon control rectifiers are the switches that control power input to the electrical field The voltage control turns the silicon control rectifier on and ... filtered air into the insulator compartments or penthouse An electric heater element or sometimes steam coil heats air that has been drawn through a filter by a blower The conditioned air is then...

Ngày tải lên: 11/08/2014, 09:21

... it a good air pollution control device This high pressure air is typically directed through a Venturi, to increase air volume, raises the air pressure inside the filter over the process air flowing ... reverse air cleaning principle is to use an extra air mover for cleaning filters This extra air mover produces a higher pressure than the air flowing through the collector; hence, a flow of air through ... reverse air collector is built in numerous configurations It is a moderate energy device Generally it uses a caged needled fabric tubular media making it a pretty good choice for air pollution control...

Ngày tải lên: 11/08/2014, 09:21

... diffusion, however, is primarily found in use in fiberbed collectors As air containing particulate flows through a filter, the air flows around any obstacle (such as a filter fiber) that is in its path ... as a result follow the air as it winds its way through a filter These particles have substantial random motion, called Brownian diffusion, due to collisions with nearby air molecules This almost ... processes, especially on fabric and vinyl, create visible emissions that fiberbed filters can effectively control The emissions are typically generated during the drying and curing phase of the operation,...

Ngày tải lên: 11/08/2014, 09:21

... neutralization system Sprayed with a suitable biocide, these type devices can also trap and control airborne bacteria and spores They are therefore often used for laboratory hood applications ... scrubber with sonimist chamber (Misonix Incorporated) These types of collectors have also been used to control dopant gases used in the manufacture of semiconductor materials These gas flows are typically...

Ngày tải lên: 11/08/2014, 09:21

... mesh pads, chevrons, or packed sections for droplet control In the curved grid scrubber, which operates at a higher vessel velocity, droplet control is most often by chevron; therefore, these ... and the gas has no preferred or directed path These designs were sold under license by ChemPro (Fairfield, NJ), the Otto H York Company (Parsippany, NJ), and others It became evident on some of ... ft/sec Gas outlet velocities are the same as the inlet if the cleaned gases proceed to downstream equipment (such as a fan) If a stack is mounted on top of the scrubber, gas velocities of 35 to...

Ngày tải lên: 11/08/2014, 09:21

... compact arrangement Figure 11.1 AAF RotoClone type N (American Air Filter) © 2002 by CRC Press LLC Figure 11.2 Type W RotoClone (American Air Filter) Another variant is the type W RotoClone Shown ... to separate droplets from the gas stream The type N RotoClone is used for higher efficiency dust control Please note the drag chain conveyor (extending off to the left) that is an integral part ... scrubber so no additional fan is needed Two very popular mechanically aided scrubbers are the American Air Filter (AAF) W RotoClone series and the Ducon UW-4 arrangement These both use sprayed wheel...

Ngày tải lên: 11/08/2014, 09:21

... characteristics, and the scrubbing liquid’s capacity for that contaminant control the actual amount of packing needed in a packed tower Packing selection is covered in detail in books specifically devoted to ... individual contaminant gas molecule is only in contact with the descending liquid for a fraction of a second By increasing the number of chance such random contacts through increasing the height of ... by the equilibrium conditions between the contaminant gas and the absorbing liquid The overall controlling mechanisms are ruled by the solubility of the gas in the liquid and by any reactions...

Ngày tải lên: 11/08/2014, 09:21

... this separation A small portion of the spray goes overhead with the gas This droplet dispersion is controlled using chevron type droplet eliminator(s) in the case of a gas stream containing particulate, ... application where a utility FGD spray tower is installed after a dry precipitator used for particulate control With the preformed spray scrubber, the spray nozzles are generally installed in the gas ... ft/sec are common For FGD systems, the pH (and sometimes, density) of the scrubbing solution is controlled to operate within a window bounded by efficiency and scaling For limestone slurry scrubbing,...

Ngày tải lên: 11/08/2014, 09:21

... combustor and its principal components PRIMARY GAS NOZZLE FLAME HOLDER SECONDARY GAS NOZZLE BURNER TILE AIR PLENUM AIR REGISTER AIR REGISTER HANDLE Figure 15.2 Low NOx burner and components (John ... oxygen This reaction occurs when air is heated to high temperatures such as those that exist in a flame The reaction is not very efficient © 2002 by CRC Press LLC Air contains 79% nitrogen (N2) and ... formation Second, NOx is proportional to at least the square root of oxygen concentration The nitrogen concentration is less important because it does not change much with little or lots of air However,...

Ngày tải lên: 11/08/2014, 09:21

... used for the control of non-condensable gases from a paper pulp mill The unit consists of a specially designed burner, burner controls, insulated combustion chamber, and temperature controls Figure ... fuel burner Air source (blower or natural convection) Furnace (temperature controlled chamber where the oxidation reactions occur) Stack (to direct the combustion products to atmosphere) Control ... need a combustion air blower A waste heat recovery boiler may be added, in which case the furnace is horizontal and a combustion air blower is added Pharmaceutical plants generate air- rich or nitrogen-rich...

Ngày tải lên: 11/08/2014, 09:21

... compact size makes them attractive for roof mounting if space is a problem As seen in Figure 18.4, a pair of vane type scrubbers are seen roof mounted with the exhaust stacks mounted directly on top ... stream contains over 20% submicron particulate, vane type scrubbers may not be able to meet current air emissions regulations The scrubber vendor should be able to predict the scrubber performance...

Ngày tải lên: 11/08/2014, 09:21

... manufacture of semiconductor products, on odor control systems where fan noise may be an issue, and on emergency gas control systems (such as for chlorine control) Reverse jet scrubbers are used on ... distributed The simple configuration and reliability of the Venturi scrubber makes it a true air pollution control workhorse © 2002 by CRC Press LLC ... greater small droplet removal than the latter Without proper droplet control, the liquid could be entrained to the stack testing equipment and the particulate those droplets contain be counted as...

Ngày tải lên: 11/08/2014, 09:21

... aspects of industrial hygiene Air Pollution Engineering Manual As an “update” of the old “AP-42” U.S government publication regarding the application of air pollution control devices, this essential ... who deal with air pollution control problems repeatedly during the year It is of great value as well for people who must keep “up to speed” with the latest advances in pollution control Highly ... information regarding gas flow rates, gas moving devices (such as fans), air pollution control hardware, psychometrics, and related air/ gas properties © 2002 by CRC Press LLC McIllvaine Scrubber Manual...

Ngày tải lên: 11/08/2014, 09:21

... AIR POLLUTION CONTROL EQUIPMENT CALCULATIONS AIR POLLUTION CONTROL EQUIPMENT CALCULATIONS Louis Theodore An Introduction by Humberto ... and upgrading the effectiveness of air pollution control practices At the heart of the control strategy process is the selection of the best air pollution control measures from among those available ... sources within any control jurisdiction Control technology is self-defeating if it creates undesirable side effects in meeting (limited) air pollution control objectives Air pollution control should...

Ngày tải lên: 01/04/2014, 11:43

... Industrial Control Wiring Guide Second edition Bob Mercer OXFORD AUCKLAND BOSTON JOHANNESBURG MELBOURNE NEW DELHI Newnes ... safety and operational efficiency of equipment BS EN 60204 also provides guidelines specific to the electrical controls for machinery ᭹ Part 6: Multiple function equipment such as that used for automatic ... SAFETY 1.2 Building safe equipment 1.2.2 Standards A standard is a document specifying nationally or internationally agreed properties for manufactured goods and equipment The second aspect of safety...

Ngày tải lên: 05/03/2014, 17:20

... Industrial Control Wiring Guide Second edition Bob Mercer OXFORD AUCKLAND BOSTON JOHANNESBURG MELBOURNE NEW DELHI Newnes ... safety and operational efficiency of equipment BS EN 60204 also provides guidelines specific to the electrical controls for machinery ᭹ Part 6: Multiple function equipment such as that used for automatic ... SAFETY 1.2 Building safe equipment 1.2.2 Standards A standard is a document specifying nationally or internationally agreed properties for manufactured goods and equipment The second aspect of safety...

Ngày tải lên: 22/03/2014, 12:20

... regulated equipment or areas that need air pollution control permit Rock crushing facility Rock crushing facility Dust collection facility Sandblasting sites A Guide to Obtaining Air Pollution Control ... structure or other architectural surfaces A Guide to Obtaining Air Pollution Control Permits | © City of Chicago 2011 A Guide to Obtaining Air Pollution Control Permits | © City of Chicago 2011 ... production and other similar operations A Guide to Obtaining Air Pollution Control Permits | © City of Chicago 2011 When I apply for an Air Pollution Control permit? Pursuant to Section 11-4-620...

Ngày tải lên: 23/03/2014, 04:20