Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Baffle Spray Scrubber shopping experience:
1. Compare - without doubt the biggest advantage that the Baffle Spray Scrubber offers shoppers today is the ability to compare thousands of Baffle Spray Scrubber at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.
2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about
3. Testimonials - don't know anybody that has bought a Baffle Spray Scrubber? Wrong! If the Baffle Spray Scrubber is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.
4. Questions - Got a question about Baffle Spray Scrubber then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....
5. Reputation - Never heard of the company selling Baffle Spray Scrubber? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Baffle Spray Scrubber and build up a picture of their reputation for sales, returns, customer service, delivery etc.
6. Returns - still worried that even after all of the above your Baffle Spray Scrubber wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.
7. Feedback - happy with your Baffle Spray Scrubber then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.
8. Security - check for the yellow padlock on the Baffle Spray Scrubber site before you buy, and the s after http:/ /i.e. https:// = a secure site
9. Contact - got a question about Baffle Spray Scrubber, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.
10. Payment - ready to pay for your Baffle Spray Scrubber, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.
Baffle spray scrubbers are a technology for air
pollution control. They are very similar to
spray towers in design and operation. However, in addition to using the energy provided by the spray nozzles, baffles are added to allow the gas stream to atomize some liquid as it passes over them.
A simple baffle scrubber system is shown in
Figure 1. Liquid sprays capture pollutants and also remove collected particles from the baffles. Adding baffles slightly increases the
pressure drop of the system.
This type of technology is a part of the group of
air pollution controls collectively referred to as
wet scrubbers.
A number of wet-scrubber designs use energy from both the gas stream and liquid stream to collect pollutants. Many of these combination devices are available commercially.
A seemingly unending number of scrubber designs have been developed by changing system geometry and incorporating vanes, nozzles, and baffles.
Particle collection
These devices are used much the same as spray towers - to preclean or remove particles larger than 10 μm in diameter. However, they will tend to plug or corrode if particle concentration of the exhaust gas stream is high.
Gas collection
Even though these devices are not specifically used for gas collection, they are capable of a small amount of gas
absorption because of their large wetted surface.
Summary
These devices are most commonly used as precleaners to remove large particles (>10 μm in diameter). The
pressure drops across baffle scrubbers are usually low, but so are the collection efficiencies. Maintenance problems are minimal. The main problem is the buildup of solids on the baffles.
Table 1 summarizes the operating characteristics of baffle spray scrubbers. * US EPA Air Pollution Training Institute developed in collaboration with North Carolina State University, College of Engineering (NCSU)
{| class="wikitable" style="width:100%; align:center; cellpadding:4"|-! colspan="6" style="height:50px; align:center" | Table 1. Operating characteristics of baffle spray scrubbers|-| align="center" width="12%" |
Pollutant| align="center" |
Pressure drop (Δp)| align="center" |
Liquid-to-gas ratio (L/G)| align="center" |
Liquid-inlet pressure (pL)| align="center" |
Removal efficiency| align="center" |
Applications|-| align="center" width="12%" |
Gases| align="center" | 2.5-7.5 cm of water| align="center" rowspan="2" | 0.13 l/m3 (1 gal/1,000 ft3)| align="center" rowspan="2" | < 100 kPa (< 15 psig)| align="center" | very low| align="center" rowspan="2" | Mining operations
Incineration
Chemical process industry|-| align="center" width="12%" |
Particles| align="center" | 1-3 in of water| align="center" | 10 µm diameter|}
Bibliography
- Bethea, R. M. 1978. Air Pollution Control Technology. New York: Van Nostrand Reinhold.
- McIlvaine Company. 1974. The Wet Scrubber Handbook. Northbrook, IL: McIlvaine Company.
- Richards, J. R. 1995. Control of Particulate Emissions (APTI Course 413). U.S. Environmental Protection Agency.
- Richards, J. R. 1995. Control of Gaseous Emissions. (APTI Course 415). U.S. Environmental Protection Agency.
- U.S. Environmental Protection Agency. 1969. Control Techniques for Particulate Air Pollutants. AP-51.
References
Baffle spray scrubbers are a technology for air pollution control. They are very similar to
spray towers in design and operation. However, in addition to using the energy provided by the spray nozzles,
baffles are added to allow the gas stream to atomize some liquid as it passes over them.
A simple baffle scrubber system is shown in
Figure 1. Liquid sprays capture pollutants and also remove collected particles from the baffles. Adding baffles slightly increases the pressure drop of the system.
This type of technology is a part of the group of air pollution controls collectively referred to as
wet scrubbers.
A number of wet-scrubber designs use energy from both the gas stream and liquid stream to collect pollutants. Many of these combination devices are available commercially.
A seemingly unending number of scrubber designs have been developed by changing system geometry and incorporating vanes, nozzles, and baffles.
Particle collection
These devices are used much the same as
spray towers - to preclean or remove particles larger than 10 μm in diameter. However, they will tend to plug or corrode if particle concentration of the exhaust gas stream is high.
Gas collection
Even though these devices are not specifically used for gas collection, they are capable of a small amount of gas
absorption because of their large wetted surface.
Summary
These devices are most commonly used as precleaners to remove large particles (>10 μm in diameter). The pressure drops across baffle scrubbers are usually low, but so are the collection efficiencies. Maintenance problems are minimal. The main problem is the buildup of solids on the baffles.
Table 1 summarizes the operating characteristics of baffle spray scrubbers. * US EPA Air Pollution Training Institute developed in collaboration with North Carolina State University, College of Engineering (NCSU)
{| class="wikitable" style="width:100%; align:center; cellpadding:4"|-! colspan="6" style="height:50px; align:center" | Table 1. Operating characteristics of baffle spray scrubbers|-| align="center" width="12%" |
Pollutant| align="center" |
Pressure drop (Δp)| align="center" |
Liquid-to-gas ratio (L/G)| align="center" |
Liquid-inlet pressure (pL)| align="center" |
Removal efficiency| align="center" |
Applications|-| align="center" width="12%" |
Gases| align="center" | 2.5-7.5 cm of water| align="center" rowspan="2" | 0.13 l/m3 (1 gal/1,000 ft3)| align="center" rowspan="2" | < 100 kPa (< 15 psig)| align="center" | very low| align="center" rowspan="2" | Mining operations
Incineration
Chemical process industry|-| align="center" width="12%" |
Particles| align="center" | 1-3 in of water| align="center" | 10 µm diameter|}
Bibliography
- Bethea, R. M. 1978. Air Pollution Control Technology. New York: Van Nostrand Reinhold.
- McIlvaine Company. 1974. The Wet Scrubber Handbook. Northbrook, IL: McIlvaine Company.
- Richards, J. R. 1995. Control of Particulate Emissions (APTI Course 413). U.S. Environmental Protection Agency.
- Richards, J. R. 1995. Control of Gaseous Emissions. (APTI Course 415). U.S. Environmental Protection Agency.
- U.S. Environmental Protection Agency. 1969. Control Techniques for Particulate Air Pollutants. AP-51.
References
Baffle spray scrubber - Wikipedia, the free encyclopedia
Baffle spray scrubbers are a technology for air pollution control. They are very similar to spray towers in design and operation. However, in addition to using the energy provided ...
Scrubber - Wikipedia, the free encyclopedia
Baffle spray scrubber; Ejector venturi scrubber; Liquid-to-gas ratio; Mechanically aided scrubber; Spray tower; Spray Nozzle; Venturi scrubber; Air Turbo-Impactor
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