Krishnan & Associates Inc., recently organized and promoted a seminar for Coal Fired Boiler Technology at the ITC Chola Hotel in Chennai, India on “Advancements in Circulating Fluidized Bed (CFB) Technology Providing the Best Solutions for India's Energy Future”
Dry FGD Seminar Invitation from Sumitomo SHI FW
Why Dry FGD is Ideal for SO2 Emission Compliance for Indian Power Plants
Sulfur dioxide (SO2) emission control has become a priority for Indian power plants to ensure compliance with Ministry of Environment & Forest (MOEF) regulations. By 2022, an estimated 150 GW of Indian coal-fired power plants will have to comply with stringent SO2 emissions limits of 200 mg/Nm3 for existing units >500 MW, and 100 mg/Nm3 for all newly commissioned coal units. Until now, wet flue gas desulfurization (wFGD) has been the preferred FGD technology for Indian power plants to meet emission limits largely due to its track record on large scale units, and the production of gypsum as a by-product for possible sale. However, wFGD technology comes with several expensive drawbacks such as high initial capital costs, large real estate requirements, high water utilization, and power consumption. In addition, gypsum sales have been difficult to realize in India because of inadequate market demand.
In contrast, circulating fluidized bed (CFB) scrubbers or dry FGD technology are being viewed worldwide as an ideal FGD solution for both large and small plants. The Dry FGD systems use advanced CFB scrubber technology, to efficiently and economically capture a wide array of pollutants, including SO2, PM, acid gases, and organic compounds. It is cost-effective, uses the least amount of power and water, and can handle fuels with a wide range of sulfur content. Additionally, its recent success with large scale installations in many parts of the world make it the ideal choice for Indian power plants, particularly those less than 700 MW.
How Does Dry FGD Work?
During operation, boiler flue gas enters at the bottom of the CFB scrubber’s up-flow absorber vessel. The gas mixes with hydrated lime and water injected into the absorber, as well as recirculated solids from a downstream fabric filter. The wall surface of the absorber causes high turbulent mixing of the flue gas, solids and water to achieve a high-capture efficiency of the vapor phase acid gases and metals contained within the flue gas.
CFB Scrubbing (Dry FGD) Seminar
Sumitomo SHI FW (SFW), the world leader in CFBC boiler technology is proud to extend a personal invitation to you for our free CFB Boiler Technology & Dry FGD Seminar on December 6, 2018 from 9:30 am to 5:30 pm at the ITC Grand Chola Hotel, The Rajendra Hall 2, in Chennai, Tamil Nadu. The Dry FGD segment of the seminar will focus on the technical, economic and environmental benefits of Dry CFB scrubbing technology as it applies to the Indian market.