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Typical sorbent material is limestone, or lime. Li mestone is very inexpensive but control efficiencies for limestone systems are limited to appr oximately 90%. Lime is easier to manage on-site and has control efficiencies up to 95% but is significantly more cost ly (Cooper 2002). Proprietary sorbents Consequently, many studies in Poland and abroad address the impact of various parameters on the pH value of the sorbent suspension, such as the average diameter of sorbent particles (related to the limestone pulverization degree), sorbent quality (in terms of pure calcium carbonate [CaCO3] content of the sorbent material), stoichiometric Dec 01, 2014 Overall, 70% of the WFGD systems use calcium-based material, mostly limestone, as SO 2 sorbent . In these systems, limestone is finely ground (95% passing 45 μm), and mixed with water to obtain a sorbent slurry. The overall reaction of post-combustion SO 2 control by this slurry is,: (1) CaCO 3 s + SO 2 g + ½ O 2 g + 2 H 2 O s → CaSO 4 2 remove these pollutants from the flue gas is by injection of sorbents downstream of a boiler and up-stream of a particulate control device. Activated carbon (AC) is a suitable sorbent to capture vapor-phase mercury and calcium-based sorbents such as quicklime (CaO) and hydrated lime (Ca(OH)2) are suitable sorbents to capture SOx and HCl. This value of the sorbent (i.e., ground limestone suspended in water). Consequently, many studies in Poland and abroad address the impact of various parameters on the pH value of the sorbent suspension, such as the average diameter of sorbent particles (related to the limestone pulverization degree), sorbent quality (in terms of pure calcium carbon Wet limestone systems are well established in some sectors such as the Power Generation industry. This process is based on the large degree of contact between the circulating slurry and the flue gases. This slurry circulates in the absorber tower (or scrubber) to neutralize the condensed flue gas pollutant, mostly SO2. The pH of the slurry is a key parameter to be monitored as Mar 25, 2013 This creative pattern of different limestone tile colours and sizes was installed on floors at the Oaks Hill Mall in California by Premier Tile & Marble Company. Photos courtesy Oaks Hill Mall . Quality control plan Part of the quality assurance is to specify a quality control plan be established and implemented by someone other than the installer. Combining spray dry scrubbing with other FGD systems such as furnace or duct sorbent injection and particulate control technology such as a pulse-jet baghouse allows the use of limestone as the sorbent instead of the more costly lime (Soud, 2010). Sulfur dioxide removal efficiencies can exceed 99% with such a combination. Study on Influence Factors of Reactivity of Limestone in Limestone/Gypsum Wet FGD System[J]. Power System Engineering, 2005,12(21):1-4. Impact of the lime and the lime stone quality on the
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