网页1995年12月31日 The overall goal of this study is to assess the technical and economic feasibilities for producing marketable products including fertilizer-grade ammonium
Contact网页1995年12月31日 Millions of tone of FGD-gypsum by-product may be produced in this decade as a result of the 1990 Clean Air Act Amendments. In this research, bench-scale
Contact网页2022年7月18日 High yields (up to 83%) of ammonium sulfate with up to 99% purity were achieved under relatively mild conditions. The optimal conversion condition was
Contact网页1996年1月1日 Costs for constructing and operating a conceptual plant based on a proposed process that converts flue gas desulfurization (FGD)-gypsum to ammonium
Contact网页Costs for constructing and operating a conceptual plant based on a proposed process that converts flue gas desulfurization (FGD)-gypsum to ammonium sulfate fertilizer has been
Contact网页1995年5月31日 Goal is to assess technical and economic feasibility for producing fertilizer-grade ammonium sulfate from gypsum produced in limestone flue gas desulfurization (FGD). This is the 1st year of a 2-year
Contact网页2009年4月28日 commercial products, ammonium sulfate fertilizer and precipitated calcium carbonate (PCC), from FGD-gypsum. Ammonium sulfate is a valuable nutrient source for
Contact网页2009年3月24日 of FGD-gypsum to ammonium sulfate and PCC becomes an attractive process that could improve the economics of FGD systems in Illinois. The overall goal of
Contact网页2006年1月27日 If successful, the results of this project could provide a solution, from both the environmental and economic siandpoints, to the problem of disposing of large
Contact网页2021年11月1日 The production of ammonium sulfate fertilizer from FGD gypsum demonstrated that sulfur resources can be recovered through recycling (Chou et al., 2005). 3.3.4. Composite material. The preparation of composite materials by synergistic utilization of different substances and FGD gypsum is another focus of current research. Many
Contact网页2005年8月1日 Flue gas desulfurization (FGD) gypsum is the main product of the desulfurization system used to remove SO x from coal combustion products. One established utilization of waste gypsum has been the
Contact网页Costs for constructing and operating a conceptual plant based on a proposed process that converts flue gas desulfurization (FGD)-gypsum to ammonium sulfate fertilizer has been calculated and used to estimate a market price for the product. The average market price of granular ammonium sulfate ($138/ton) exceeds the rough estimated cost of ammonium
Contact网页2009年4月28日 using FGD are challenged by expensive landfill dis posal costs, successful production of fertilizer from FGD-gypsum would economically favor FGD technology. The economics of the conversion process will be improved by an additional revenue from sale of by-product, PCC. Phase I of this project focused on an economical process to produce
Contact网页2009年3月24日 of FGD-gypsum to ammonium sulfate and PCC becomes an attractive process that could improve the economics of FGD systems in Illinois. The overall goal of this project is to assess the technical feasibility for producing the dual commercial products, ammonium sulfate fertilizer and PCC, from FGD-gypsum. Specific objectives of this
Contact网页2014年3月1日 Since the 1990s, captured sulfur from flue gas has resulted in the production of high-quality gypsum, hydrated calcium sulfate: CaSO 4 -2H 2 O. That synthetic gypsum can then be beneficially used
Contact网页2018年5月8日 lbs/yd3) of FGD gypsum incorporated into the substrate mix, increasing by 3.26 kg/m3 (5.5 lbs/yd3) up to 19.58 kg/m3 (33 lbs/yd3). All treatments were compared to a control of no additional FGD gypsum. The FGD gypsum was incorporated into the soil mix and the plants were grown to a marketable size, or in the case of tomato, a harvestable and
Contact网页Recently, gypsum, which is hydrated calcium sulfate (CaSO 4 •2H 2 O) mineral from mined geologic deposits, a co-product of the phosphate fertilizer industries, or a byproduct of flue gas
Contact网页FGD gypsum have experienced a transformation process from abandonment to utilization. In the early years, the limestone gypsum FGD process installed in the United States mostly used natural oxidation method, and the by-product was calcium sulfate, which had unstable performance and little comprehensive utilization value.
Contact网页bilized FGD gypsum, a high concentration of sulfate may be found in the leachate. There is no leachate standard for sulfate at the present time. However, there is an EPA drinking water standard for S0 4 and it was recently reduced from 300 mg/L to 200 mg/L. Mechanical Properties Mechanical tests performed on stabilized FGD gypsum mix
Contact网页1999年1月1日 The authors have been developing a process which converts FGD-gypsum to ammonium sulfate fertilizer with precipitated calcium carbonate as a by-product during the conversion. Preliminary cost estimates suggest that the process is economically feasible when ammonium sulfate crystals are produced in a granular size (1.2 to 3.3 mm), instead
Contact网页2005年8月1日 Flue gas desulfurization (FGD) gypsum is the main product of the desulfurization system used to remove SO x from coal combustion products. One established utilization of waste gypsum has been the
Contact网页2009年4月28日 using FGD are challenged by expensive landfill dis posal costs, successful production of fertilizer from FGD-gypsum would economically favor FGD technology. The economics of the conversion process will be improved by an additional revenue from sale of by-product, PCC. Phase I of this project focused on an economical process to produce
Contact网页1994年12月1日 The overall goal of this project is to assess the technical and economic feasibility for producing feasibility-grade ammonium sulfate from gypsum produced as part of limestone flue gas desulfurization (FGD) processes. This is a cooperative effort among the ISGS, the UIUC, AlliedSignal, SE-ME, Henry Fertilizer, Illinois Power Co. (IP), and
Contact网页2009年3月24日 of FGD-gypsum to ammonium sulfate and PCC becomes an attractive process that could improve the economics of FGD systems in Illinois. The overall goal of this project is to assess the technical feasibility for producing the dual commercial products, ammonium sulfate fertilizer and PCC, from FGD-gypsum. Specific objectives of this
Contact网页Contribute to chengxinjia/sbm development by creating an account on GitHub.
Contact网页2010年11月1日 desulphurization (FGD) gypsum produced from the Meliti thermal power plant in the region of Florina in North West Greece, in order to investigate potential uses in the cement industry. Mineralogical and microprobe analyses were carried out on FGD gypsum samples collected from the Meliti 330 MW lignite-fired power plant.
Contact网页2020年1月28日 Approximately 30 percent of the FGD material produced in 2006 was beneficially used (ACAA 2007). Fixated or stabilized calcium sulfite FGD scrubber material has been used as an embankment and road base material. FGD products have also been used in place of gypsum, as feed material for the production of Portland cement.
Contact网页bilized FGD gypsum, a high concentration of sulfate may be found in the leachate. There is no leachate standard for sulfate at the present time. However, there is an EPA drinking water standard for S0 4 and it was recently reduced from 300 mg/L to 200 mg/L. Mechanical Properties Mechanical tests performed on stabilized FGD gypsum mix
Contact网页The authors have been developing a process which converts FGD-gypsum to ammonium sulfate fertilizer with precipitated calcium carbonate as a by-product during the conversion. Preliminary cost estimates suggest that the process is economically feasible when ammonium sulfate crystals are produced in a granular size (1.2 to 3.3 mm), instead of a
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