Showing results for: wet flue gas desulfurization Articles
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Wet Flue Gas Desulfurization System
Installing the optimum wet flue gas desulfurization technology, B&V Energy is bringing superior multi-pollutant removal technology to the North American utility marketplace. To help make a positive impact on the global environment and to comply with the Clean Air Interstate and Clean Air Mercury Rules, Dayton Power & Light needed to remain in compliance as more stringent air quality ...
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Removal of sulfate from wet FGD wastewater by co-precipitation with calcium hydroxide and sodium aluminate
Chemical precipitation method was adopted to remove sulfate from wet flue gas desulfurization (FGD) wastewater and mixtures of Ca(OH)2 (CH) and NaAlO2 (SA) were used as precipitants. The mechanisms of sulfate removal were explored according to the experimental and simulated results. These showed that three kinds of precipitations, which were gypsum, ettringite and co-precipitation onto ...
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Numerical simulation and field test study of desulfurization wastewater evaporation treatment through flue gas
Aimed at cost saving and pollution reduction, a novel desulfurization wastewater evaporation treatment system (DWETS) for handling wet flue gas desulfurization (WFGD) wastewater of a coal-fired power plant was studied. The system's advantages include simple process, and less investment and space. The feasibility of this system has been proven and the appropriate position and number of ...
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Mercury speciation and distribution in a 660-megawatt utility boiler in Taiwan firing bituminous coals
Mercury speciation and distribution in a 660-MW tangential-fired utility boiler in Taiwan burning Australian and Chinese bituminous coal blends was investigated. Flue gases were simultaneously sampled at the selective catalytic reduction (SCR) inlet, the SCR outlet, the electrostatic precipitator (ESP) outlet, and the stack. Samplings of coal, lime, bottom ash/slag, fly ash, and gypsum slurry ...
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Overview of mercury control in coal-fired power plants
During combustion, the mercury (Hg) in coal is volatilized and converted to elemental mercury (Hg0) vapor in the high temperature regions of coal-fired boilers. As the flue gas is cooled, a series of complex reactions begin to convert Hg0 to ionic mercury (Hg2+) compounds and/or Hg compounds (Hgp) that are in a solid-phase at flue gas cleaning temperatures or Hg that is adsorbed onto the surface ...
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Control of Mercury Emissions from Coal-fired Electric Utility Boilers
During combustion, the mercury (Hg) in coal is volatilized and converted to elemental mercury (Hg°) vapor in the high temperature regions of coal-fired boilers. As the flue gas is cooled, a series of complex reactions begin to convert Hg° to ionic mercury (Hg2T) compounds and/or Hg compounds (Hgp) that are in a solid-phase at flue gas cleaning temperatures or Hg that is adsorbed onto the ...
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Factory Flue Gas Treatment Methods
Flue gas treatment is a process that removes pollutants from exhaust gases produced by industrial processes, power plants, and other sources before they are emitted into the atmosphere. Specific flue gas treatment processes can vary based on the type of contaminants and regulatory requirements. The following is an overview of typical flue gas treatment processes: Flue Gas Collection: The first ...
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Advances in control of PM2.5 and PM2.5 precursors generated by the combustion of pulverised coal
Particulate matter smaller than 2.5 mm in aerodynamic diametre (PM2.5) from coal-fired boilers is composed of directly emitted (primary) particles and particles formed from precursors (secondary particles). Technologies to reduce emissions of precursors to secondary PM2.5 emitted by coal-fired utility plants include wet and dry flue gas desulphurisation (FGD). Limestone forced oxidation (LSFO) ...
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Carbon Capture & Storage: CO2 Capture
F7.1 | DOE and NETL’s Carbon Capture R&D Program Timothy Fout | Project Manager, US DOE/ NETL With pending legislation or EPA action on greenhouse gas emissions, there is a concerted effort underway to find ways to meet possible future limits in a cost effective manner. The DOE, through its Existing Plants Program, is targeting existing pulverized coal (PC) power plants since ...
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Economic evaluation for air pollution control technologies selection in power plants processes
Air quality legislation is entering a transformation phase, shifting the concept of atmospheric emission control towards pollution prevention and emission minimization through a more integrated approach. This transformation, along with public pressure and increased foreign trade, is providing industries with incentives to consider their effect on the environment and to take action where required. ...
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WESPS continue to deliver
Compliance with the increasingly stringent air pollution regulations of recent years is not the only reason forwardthinking industry leaders are adopting more sophisticated gas cleaning and air pollution control strategies. The desire to achieve higher performance efficiencies, control costs in a competitive marketplace, and stay ahead of the regulatory compliance curve is another driver of ...
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Wet electrostatic precipitators: A preferred technology for emission control
The basic science behind electrostatic precipitators is as familiar and as simple as static cling. But today, this elemental force has been harnessed to a technology that is helping to remove millions of tons of toxic chemicals from our atmosphere; saving billions of dollars annually in pollution-related physical damage; and averting costly impacts on health and mortality rates for millions of ...
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New laser-based dust emission monitoring system
Abstract A new generation of continuous particulate matter concentration monitoring instruments is presented, covering a measuring range of 0 to 1000 mg/m3. The laser-based scattered light instrument gives an improved stability as well as excellent resolution in the low range. This enables high concentration measurement as well as especially low emission monitoring down to 0.01 mg/m3 with a ...
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