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Manufacture of ammonium sulfate fertilizer from FGD

1995-12-31 · @article{osti_460120, title = {Manufacture of ammonium sulfate fertilizer from FGD-gypsum}, author = {Chou, M I.M. and Bruinius, J A and Li, Y C}, abstractNote = {The goal of this study is to assess the technical and economic feasibility of producing marketable products, namely fertilizer-grade ammonium sulfate and calcium carbonate, from gypsum produced as part of lime/limestone flue gas ...

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Manufacture of ammonium sulfate fertilizer from FGD

1995-5-31 · Goal is to assess technical and economic feasibility for producing fertilizer-grade ammonium sulfate from gypsum produced in limestone flue gas desulfurization

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Manufacture of ammonium sulfate fertilizer from FGD

1995-12-31 · Conversion of FGD- gypsum to ammonium sulfate was tested at 60-70{degree}C for 5-6 hr. Yield up to 82% and purity up to 95% were achieved for the ammonium sulfate production. During this quarter, more bench-scale experiments including a mass balance analysis were conducted; a yield up to 83% and up to 99% purity were achieved.

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MARKETABLE AMMONIUM SULFATE FERTILIZER AND

2009-3-24 · two marketable products, ammonium sulfate fe rtilizer and precipitated calcium carbonate (PCC), from wet limestone flue gas desulfurization (FGD) by-product gypsum. The wet FGD process, although effectively removing SO2 by using limestone, produces a large amount of solid gypsum. Power plants burning high-sulfur coal and using the FGD

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Utilization of the gypsum from a wet limestone flue gas ...

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 powder form.

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Limestone FGD – Ammonia FGD Technology Limestone

The gypsum discharge pump sends calcium sulfate slurry from the absorption tower to the gypsum dehydration system. 3.1 absorption tower The absorption tower is an air tight structure, in order to ensure the integrity of the shell structure, welding connections are used as much as possible, flanged and bolted connections are used only if necessary.

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Ammonium Sulfate WFGD Technology OVERVIEW FOR

2011-12-21 · Ammonium Sulfate WFGD Technology OVERVIEW FOR GENERAL INDUSTRY INFORMATION July 2007 ... The favorable economics of the MET AS-FGD technology resides in the ability to process low cost, ... Ammonium Sulfate Process Limestone/Gypsum Process / Fil ter .

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Process for converting FGD gypsum to ammonium sulfate

A continuous countercurrent flow process for converting FGD gypsum to ammonium sulfate and calcium carbonate including countercurrent flows with internal recycle of liquids to maximize the purity of reaction products while minimizing reaction times, and further include embodiments of the process that provide a yield of both ammonium sulfate and calcium carbonate to be 97 to 100%, and ...

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Wet FGD and Dry FGD emission of CO 2 compared |

This contribution is devoted to the testing of the reactivity of CaCO3 prepared from FGD gypsum (FGDG) by the reaction with ammonium sulphate. The reactivity of limestone was evaluated on the basi ...

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Wet FGD Chemistry and Performance Factors

2010-4-28 · Chemical Reaction Steps in FGD Process •SO 2 absorption in absorber •Neutralization of the absorber SO 2 to keep the SO 2 vapor pressure low so that more SO 2 can be absorbed •Dissolution of the limestone or lime reagent to provide alkalinity for neutralization and calcium ion for precipitation •Oxidation of absorbed SO 2 to form ...

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Manufacture of ammonium sulfate fertilizer from FGD

1995-5-31 · 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 program among Illinois State Geological

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MARKETABLE AMMONIUM SULFATE FERTILIZER AND

2009-3-24 · two marketable products, ammonium sulfate fe rtilizer and precipitated calcium carbonate (PCC), from wet limestone flue gas desulfurization (FGD) by-product gypsum. The wet FGD process, although effectively removing SO2 by using limestone, produces a large amount of solid gypsum. Power plants burning high-sulfur coal and using the FGD

Read More
Utilization of the gypsum from a wet limestone flue gas ...

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 powder form.

Read More
Limestone FGD – Ammonia FGD Technology Limestone

The gypsum discharge pump sends calcium sulfate slurry from the absorption tower to the gypsum dehydration system. 3.1 absorption tower The absorption tower is an air tight structure, in order to ensure the integrity of the shell structure, welding connections are used as much as possible, flanged and bolted connections are used only if necessary.

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Process for converting FGD gypsum to ammonium sulfate

A continuous countercurrent flow process for converting FGD gypsum to ammonium sulfate and calcium carbonate including countercurrent flows with internal recycle of liquids to maximize the purity of reaction products while minimizing reaction times, and further include embodiments of the process that provide a yield of both ammonium sulfate and calcium carbonate to be 97 to 100%, and ...

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Introduction of Ammonia based FGD - Mission Energy

2019-9-16 · 0.5 ton Ammonia 1 ton SO 2 ~1.9 ton Ammonium Sulfate 1.6 ton Limestone 1 ton SO 2 2.7 ton Gypsum Ammonia process Limestone process Comparison of Ammonia and Limestone Processes Ammonium sulfate system Ammonia ... World Largest Ammonia FGD Project: Shenhua Ningxia Coal Industry Group 10 x 200 MW Generation Sets

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Manufacture of ammonium sulfate fertilizer from FGD

CIPS will provide technical assistance and samples of FGD-gypsum for the project. In this quarter, a literature study that should give detailed insight into the chemistry, process schemes, and costs of producing ammonium sulfate from gypsum is in progress at the ISGS. Acquisition of a high quality FGD-gypsum sample was completed.

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Operational Experience of Commercial, Full Scale

2019-3-8 · 2 Removal for Ammonia versus Limestone Process Description After particulate removal, hot flue gas flows to the AS WFGD absorber, where it is counter-currently contacted with saturated ammonium sulfate slurry. The ammonium sulfate is formed by reaction of the absorbed SO 2, ammonia, oxygen and water. Ammonia

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What is FGD Gypsum - US EPA

2017-8-3 · FGD PROCESS SELECTION Individual utilities are selecting FGD processes based on a number of criteria including: •SO2 removal efficiencies—generally 92-95% plus •Availability of resources/reagents—i.e. water, limestone, lime •Byproduct handling requirements—storage/disposal availability •Marketability of byproduct •Cost •Cost •Cost!

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(PDF) Study on synthetic gypsum obtained from wet flue

Synthetic gypsum CaSO4·2H2O (also called flue gas desulpurization-FGD gypsum) is a co-product resulted from the wet process of flue gas desulphurisation in thermal power plants.

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Manufacture of ammonium sulfate fertilizer from FGD

1995-5-31 · 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 program among Illinois State Geological

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Manufacture of ammonium sulfate fertilizer from FGD

The high quality FGD-gypsum sample produced from the Abbott power plant in Champaign, IL was 98.36% gypsum, CaSO{sub 4}{center_dot}2H{sub 2}O, and less than 0.01% calcium`` sulfite, CaSO{sub 3}. The low quality sample from CIPS`s Newton Power Plant at Jasper, Illinois, was only 7.36% of gypsum. It was 87.54% calcium sulfite.

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Advanced Ammonium Sulfate Wet FGD

2012-7-27 · Advanced Ammonium Sulfate Wet FGD Amy P Evans July 26, 2012 ... conventional limestone FGD (where ~0.7 ton CO 2 is released per ton SO 2 absorbed.) ... Ammonia scrubber produces high value byproduct versus low value gypsum or sulfite waste sludge . Title: Presentation Title

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Manufacture of ammonium sulfate fertilizer from FGD

CIPS will provide technical assistance and samples of FGD-gypsum for the project. In this quarter, a literature study that should give detailed insight into the chemistry, process schemes, and costs of producing ammonium sulfate from gypsum is in progress at the ISGS. Acquisition of a high quality FGD-gypsum sample was completed.

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Ammonia FGD – Ammonia FGD Technology Limestone

The Qualification of Mingsheng Ammonia flue gas desulfurization (FGD) Ammonia is used as desulphurizer in ammonia desulfurization process with low electricity consumption and low water consumption. The desulphurizer comes from a wide range of sources and has no waste water, waste gas and three wastes. Ammonium sulfate by-product can be used as ...

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Technologies for the Control of Sulphur Dioxide

2019-7-1 · Ammonia Process Process Description:- The ammonia/ammonium sulphate or ammonium scrubbing process works in a similar way to the limestone gypsum process except that aqueous ammonia is used as the scrubbing agent. SO 2 is removed from the flue gas by reaction with ammonia, and the final product is ammonium sulfate[8].

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Coal Combustion Products - USGS

2002-5-1 · popular in Europe uses ammonia (NH 3) as the sorbent; the FGD product is ammonium sulfate ((NH 4) 2 SO 4). Sulfate is the preferred form of sulfur readily assimilated by crops, and ammonium sulfate is the ideal sulfate compound for soil supplements because it also provides nitrogen from the ammonium. The use of ammonium sulfate in large-scale ...

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Kinetics of the conversion reaction of gypsum with ...

2018-5-7 · The conversion of gypsum might be economically viable today due to growing expenses related to the deposition of FGD gypsum and the removal of CO 2 captured as CaCO 3 in this process. Moreover, as aforementioned, ammonium sulfate is more desired product today than in the past, which positively influences its price.

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(PDF) Study on synthetic gypsum obtained from wet flue

Synthetic gypsum CaSO4·2H2O (also called flue gas desulpurization-FGD gypsum) is a co-product resulted from the wet process of flue gas desulphurisation in thermal power plants.

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Influence of flue gas desulfurization (FGD) installations ...

2017-11-1 · Droplets with gypsum (the FGD product, CaSO 4.2H 2 O) and unreacted limestone (CaCO 3) are most likely entrained in flue gas and carried downstream toward the demister where the cleaned gas passes through. The liquid droplets were stopped so

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