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Cement Kiln Dust for SO2 removal
From 10 to 12 million tons of cement kiln dust accumulates annually at domestic cement plants. This finely divided dust is emitted from cement kilns to prevent the buildup of excessive salts in the cement product. If separated into its valuable components, waste cement kiln dust could become a significant source of potassium and a raw material for making cement. This article does not include the use of this dust for SO2 removal from coal-fired boilers, but potassium is very reactive and would be a good reagent. One question is its use in direct sorbent injection or DSI. There is widespread use of drinking water plant lime sludge as an FGD reagent. So other alternatives should also be explored. The use would be primarily where a small boiler is near a source or where multiple sources can be included so that enough reagent for a large application is available.
Revision Date: 12/13/2018
Tags: 221112 - Fossil Fuel 化石燃料, Reagent Preparation, Dust Collecting
The results of trona injection for SO2 and HCl reduction for a utility boiler with ESP, an industrial boiler with ESP and a cement kiln with FF baghouse.
Revision Date: 6/21/2012
Tags: 221112 - Fossil Fuel 化石燃料, Southern Air Solutions, Dry Sorbent Injection, Fabric Filter, Electrostatic Precipitator, Lime, Trona, SO2, Mercury, HCl, Reagent Preparation
Key properties of hydrated lime that impact sorbent performance.
Revision Date: 6/21/2012
Tags: 221112 - Fossil Fuel 化石燃料, Graymont, Sodium Bicarbonate, Lime, Fabric Filter, Electrostatic Precipitator, Dry Sorbent Injection, Trona, HCl, Mercury, SO3, Reagent Preparation
The effect of milling sodium sorbents on their performance in removing HCl and SO2.
Revision Date: 6/21/2012
Tags: 221112 - Fossil Fuel 化石燃料, Solvay Chemicals, Sodium Bicarbonate, Lime, Dry Sorbent Injection, Trona, SO3, SO2, Mercury, HCl, Reagent Preparation, Milling
The speakers addressed the use of dry sorbent injection to meet the new MATS and CSAPR as well as material handling issues and methods to improve the performance of and reduce the usage of sorbents.
Revision Date: 6/21/2012
Tags: 221112 - Fossil Fuel 化石燃料, Mississippi Lime, Solvay Chemicals, Southern Air Solutions, Babcock Power, Graymont, Fabric Filter, Dry Sorbent Injection, Lime, Trona, Sodium Bicarbonate, SCR, Electrostatic Precipitator, SO2, Ammonia, Mercury, HCl, SO3, Reagent Preparation, Mixing, Milling
Lew endorsed modeling of dry sorbent injection including not just CFD but also chemical reaction modeling.
Revision Date: 6/7/2012
Tags: 221112 - Fossil Fuel 化石燃料, Nalco Mobotec, CFD, Lime, Trona, Dry Sorbent Injection, HCl, SO3, Mercury, Reagent Preparation
Discussion on technology for dry sorbent material preparation and grinding.
Revision Date: 6/7/2012
Tags: 221112 - Fossil Fuel 化石燃料, Gebr. Pfeiffer, Lime, Dry Sorbent Injection, SO3, HCl, Mercury, Grinding, Reagent Preparation
Marcus provided efficiency comparisons for the patented “Sorbent Enhancement Additives” technology for mercury control compared to brominated activated carbon.
Revision Date: 6/7/2012
Tags: 221112 - Fossil Fuel 化石燃料, Midwest Energy Emissions Corp, Lime, Dry Sorbent Injection, Mercury, SO3, HCl, Reagent Preparation
Ten Years after Dry Sorbent Injection 2012 by David Escott, FLSmidth - Hot Topic Hour June 7, 2012
David pointed out that the experience with SO3 mitigation was the foundation for DSI injection for SO2 and HCl.
Revision Date: 6/7/2012
Tags: 221112 - Fossil Fuel 化石燃料, FLSmidth, Trona, Pneumatic Conveyor, Lime, Dry Sorbent Injection, SO3, HCl, Mercury, Reagent Preparation
Summary of the challenges facing small to medium size coal-fired power plants without SCRs and scrubbers in meeting MATS and CSAPR regulations.
Revision Date: 6/7/2012
Tags: 221112 - Fossil Fuel 化石燃料, Breen Energy Solutions, Lime, Dry Sorbent Injection, SO3, HCl, Mercury, Reagent Preparation
There is a great deal of activity in evaluation of dry sorbent injection to meet the new MATS and CSPR.
Revision Date: 6/7/2012
Tags: 221112 - Fossil Fuel 化石燃料, Midwest Energy Emissions Corp, Breen Energy Solutions, FLSmidth, Nalco Mobotec, Gebr. Pfeiffer, Trona, Pneumatic Conveyor, Dry Sorbent Injection, Lime, CFD, HCl, SO3, Mercury, Reagent Preparation, Grinding
FGD Services, presented by Greg Andersen, Mississippi Lime - Hot Topic Hour January 26, 2012.
Dry grinding with roller mills makes sense if you are going to grind at the plant site. It is especially attractive to consider not grinding at all but to pay for delivered ground limestone.
Revision Date: 1/26/2012
Tags: Mississippi Lime, Roller Mill, Lime, Size Reduction, Reagent Preparation
Limestone Size Reduction and Regional Grinding - Webinar - January 26, 2012.
The sizing of limestone figures into the equation for both emission reduction efficiency and operating cost. Regional grinding has been utilized by some facilities to reduce cost and with many more scrubbers coming online in the next few years may be a solution for others.
Revision Date: 1/26/2012
Tags: Mississippi Lime, Roller Mill, Lime, Reagent Preparation, Size Reduction
Xylem Flygt 4600 mixer used in lime slurry tanks and ore processing
The 4600 series mixers are ideal for lime slurries because of the two abrasion resistant options tungsten carbide or silicon carbide. With 8 different models, this makes it also a good option for ore processing. WCCR has superior sliding properties meaning considerably less wear between the two seal surfaces offering a longer life with less risk of leakage. It offers better mechanical strength and is far less brittle and sensitive to handling damage than SiC. WCCR has a binder where chromium, nickel and molybdenum have been added giving excellent corrosion resistance down to a pH of 3. SiC has the advantage when the pH is lower than 3 or when mixing small particles that are harder than WCCR.
Revision Date: 12/12/2011
Tags: 221112 - Fossil Fuel 化石燃料, 212000 - Mining & Quarrying , Xylem, Mixer, Air Quality, Reagent Preparation, FGD, Water Circulation, Water Clarification
Material Handling in Coal Plants - Hot Topic Hour February 10, 2011
Speakers addressed the various material handling systems and equipment available for all of the materials used in a coal-fired power plant, the advantages or disadvantages of each, their operating experience with the equipment, potential problems to avoid during design and operation and new technology available to improve performance while reducing energy consumed and maintenance requirements. Password: hth192
Revision Date: 2/10/2011
Tags: 221112 - Fossil Fuel 化石燃料, Pennsylvania Crusher, Semi-Bulk Systems, FLSmidth, Aumund Group, Pneumatic Conveyor, Conveyor, Reagent Preparation, Mechanical Conveyor, Flyash, Air Quality, Reagent Preparation, FGD, Coal Handling