SO 2 is an acid gas and the typical sorbents used to remove the SO 2 from the flue gases are alkaline. Lime slurry is sprayed directly into the stack gas and absorbs SO 2. When wet scrubbing with a Ca(OH) 2 (lime) slurry, the reaction produces CaSO 3 (calcium sulfite). Ca(OH) 2 (solid) + SO 2 (gas) → CaSO 3 (solid) + H 2 O (liquid)
Introduction. In flue gas desulfurization systems that use magnesium hydroxide (Mg(OH) 2) slurry, the consumption of the desulfurization agent (Mg(OH) 2) is controlled by using online pH analyzers. A great concern in the pH measurement is heavy staining of the pH electrodes by the Mg(OH) 2 slurry.
Abstract: It's a gasliquidsolid threephase reaction system in the reactor for flue gas desulfurization using pyrolusite pulp. Based on the twofilm mass transfer theory and shrine core model, the macrokinetics of flue gas desulfurization using pyrolusite pulp .
The wet flue gas desulfurization (FGD) process, a commonly applied technology for the removal of SO 2 from flue gas, can also remove some heavy metals 5; thus, the generation of large amounts of FGD wastewater can also contain various heavy metals, (, arsenic, lead, mercury and selenium) 5,6.
including providing flue gas desulfurization systems to the power generation industry for more than 40 years. The Single Loop Wet Flue Gas Desulfurization (WFGD) system uses bidirectional nozzles on multiple levels with wall rings for wet scrubber applications to achieve gypsum production. Through optimized design, power consumption is ...
Flue gas desulphurisation(FGD) solution for steam generators Alkaline wet flue gas desulfurization dust removal technology, using in coalfired boiler, furnace, smelting, casting and other governance, flue gas desulfurization technology is mature, reliable and it has convenient installation, maintenance, operationand management, with low operating cost, and high desulfurization efficiency.
Flue Gas Desulfurization Flue gas desulfurization is commonly known as FGD and is the technology used for removing sulfur dioxide (SO2) from the exhaust flue gases in power plants that burn coal or oil to produce steam for the steam turbines that drive their electricity generators.
Nov 29, 2017· Yokogawa offers field devices, analyzers, and control systems, as well as softwarebased solutions that can help to optimize the operation of flue gas desulfurization systems and other types of plant facilities. Yokogawa has an installed base of over 100 control devices at flue gas desulfurization facilities around the world.
Plant Engineering. In wet flue gas desulphurisation, open spray tower absorbers have prevailed which are divided into two principal zones. These are the absorption zone exposed to the flue gas and the absorber sump, in which the limestone slurry is trapped and collected. To prevent deposits in the absorber sump,...
Unit 1 at naka Power Station, which is the newest 1,000MW coal fired power station of Tokyo Electric Power Co., Inc., entered into the commercial operation in December 2003. IHI (IshikawajimaHarima Heavy Industries Co., Ltd.) constructed the flue gas treatment system with the stateoftheart technology and low emission values.
Dec 27, 2011· This paper presents a comprehensive review of the state of the art in flue gas desulfurization (FGD) technologies for coalfired boilers. Data on worldwide FGD applications reveal that wet FGD technologies, and specifically wet limestone FGD, have been predominantly selected over other FGD technologies.
Alkaline wet flue gas desulphurization and dust removal technology is applied to coalfired boilers, furnaces, smelting, casting, and other flue gas desulphurization and treatment, the technology is mature and reliable. It has the advantages of convenient installation and maintenance, operation, management, low operating costs, high efficiency.