To remove the SO₂, the flue exhaust from a coal-fired power plant is commonly bubbled through a mixture of lime or limestone and water. The resultant reaction typically captures 95 % or more of the SO₂. Approximately 80-85 % of worldwide FGD units installed in power plants use wet limestone scrubbing vs. other technologies.

2021年12月1日 · In this study, a promising approach of employing low-grade limestone with different particle sizes as absorbent in wet flue gas desulfurization technique was investigated, which showed great alternative potential in treating the shortage of high-grade limestone.

Flue-gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO 2) from exhaust flue gases of fossil-fuel power plants, and from the emissions of other sulfur oxide emitting processes such as waste incineration, petroleum refineries, cement and lime kilns.

2011年1月14日 · The results show that the PCF device has low pressure drop, large specific capacity for flue gas treatment, high absorption rate and good dewatering performance. Under moderate conditions, the concentration of SO 2 in outlet flue …

2022年8月15日 · Using a small dual-loop falling-film WFGD experimental system, the effect of CO 2 concentration on limestone dissolution, SO 2 absorption, S IV oxidation, and CaSO 4 crystallization during limestone-based dual-loop WFGD was investigated in detail and compared with single-loop WFGD.

A flue gas desulfurization process capable of producing a high purity gypsum and also making equipment employed as minimum as possible is provided, which process comprises the steps of cooling and dedusting flue gas containing SO /SUB x/ ; contacting the cooled gas with a slurry containing limestone to remove SO /SUB x/ by absorption and also ...

Limestone-gypsum desulfurization process is one of the most widely used desulfurization technologies in the world. About 90% thermal power plants in Japan, Germany, and the United States adopted this technology for the flue gas desulfurization .

Wet scrubbers are used in utilities, paper mills, and chemical plants to remove sulfur dioxide (SO 2) and other pollutants from gas streams. Undesirable pollutants are removed by contacting the gases with an aqueous solution or slurry containing a sorbent. The most common sorbents are lime (Ca[OH] 2) and limestone (CaCO 3).

2006年7月18日 · Pilot-Plant Technical Assessment of Wet Flue Gas Desulfurization Using Limestone. F. J. Gutiérrez Ortiz, F. Vidal, P. Ollero, L. Salvador, V. Cortés, A. Giménez, and ; P. Otero

More than ninety percent of U.S. flue gas desulfurization (FGD) system capacity uses lime or limestone. This trend will likely continue into the next phase of federally mandated SO 2 reduction from coal burning power plants.