Temat: FGD - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Preparation of α-calcium sulfate hemihydrate from industrial by-product gypsum: a review
Autorzy:: Guan, Qingjun
Sui, Ying
Zhang, Fang
Yu, Weijian
Bo, Yongjie
Wang, Ping
Peng, Wenqing
Jin, Jiao
Powiązania:: https://bibliotekanauki.pl/articles/1448527.pdf
Data publikacji:: 2021
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: α-calcium sulfate hemihydrate
industrial by-product gypsum
FGD gypsum
phosphogypsum
preparation method
Opis:: In recent years, the massive accumulation of industrial by-product gypsum, especially flue gas desulfurization (FGD) gypsum and phosphogypsum (PG), not only encroaches on lands but also causes serious environmental pollution. The preparation of α-calcium sulfate hemihydrate (α-HH) from industrial by-product gypsum is an important way to solve the massive accumulation. α-HH possessing larger, dense and well-grown crystals with fewer cracks and pores has high added value and a wide range of application. Hitherto the preparation methods of α-HH from industrial by-product gypsum mainly include the autoclave process, salt/acid solution process, or alcohol-water solution process. Thereinto, the autoclave process is the only method to realize industrialization. In order to solve the high energy consumption and unfavorable continuous operation of the autoclave process, researchers suggested alternative approaches, such as salt/acid solution process and alcohol-water solution process. However, these methods are basically in the laboratory stage or pilot scale test at present. Compared with FGD gypsum, the utilization rate of PG with a larger emission is very low owing to the high impurity content. And combining the preparation of α-HH with the recovery of valuable impurities from PG seems a promising way to solve the bulk deposition of PG.
Źródło:: Physicochemical Problems of Mineral Processing; 2021, 57, 1; 168-181
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Optimalization of sorbent feeding in the dry method of flue gas desulfarization
Autorzy:: Kwiatkowski, P.
Zadrąg, R.
Powiązania:: https://bibliotekanauki.pl/articles/2073590.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: sulfur oxides
exhaust gas toxicity
exhaust gas desulfurization
dry method
FGD
tlenki siarki
toksyczność spalin
odsiarczanie spalin
suche metody odsiarczania spalin
Opis:: The swiftly developing sea transport contributes to a considerable increase of fuel usage in the international shipping, which results in the escalation of toxic compounds emitted into the atmosphere. It is followed by the constantly heightened requirements limiting those emissions. In the case of sulfur oxide emission, inside of SECA (Sulfur Emission Control Area), the maximum content of sulfur in the shipping fuels used on the territorial seas was reduced to 0.1% per mass unit, but at the same time the legislator allows the ability to use a desulfurization installation working in a closed configuration. One of the desulfurization methods fulfilling those requirements is the dry method of desulfurization. In this paper are presented the results of research conducted on this very topic in the Department of Marine and Land Power Plants. The focus is the presentation of formulated characteristics of adsorbent feeding by an injection system dedicated to the dry method.
Źródło:: Journal of Polish CIMEEAC; 2017, 12, 1; 51--58
1231-3998
Pojawia się w:: Journal of Polish CIMEEAC
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Prognosis of environmental impact of trace elements from brown coal-fired power plant Bełchatów
Autorzy:: Konieczyński, J.
Komosiński, B.
Jabłońska, M.
Cieślik, E.
Powiązania:: https://bibliotekanauki.pl/articles/204574.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: environment protection
brown coal
trace elements
combustion products
fl ue gas desulphurization (FGD) gypsum
forecast of trace elements emission
forecast of trace elements transfer
Opis:: A forecast of the negative impact exerted on the environment by selected trace elements in "Bełchatów" Power Plant has been prepared on the basis of the results of investigations into these elements’ distribution carried out as part of earlier research on coal from “Bełchatów” Field and the data on updated analyses of the content of these elements in 55 brown coal samples from test boreholes. Work in "Bełchatów" Power Plant, which is supplied with coal from "Szczerców" Field, will be accompanied by trace elements transfer. On the basis of the conducted investigations it has been found that the biosphere is most threatened by mercury emissions. As shown by the presented results of analyses and calculations, the emissions of mercury in "Bełchatów" Power Plant are low. Mercury is accumulated chiefly in gypsum produced in the FGD plant. The content of mercury in slag and ash is low.
Źródło:: Archives of Environmental Protection; 2012, 38, 3; 59-72
2083-4772
2083-4810
Pojawia się w:: Archives of Environmental Protection
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Evaluation of synthetic gypsum recovered via wet flue-gas desulfurization from electric power plants for use in foundries
Autorzy:: Biernacki, R.
Haratym, R.
Kwapisz, J.
Powiązania:: https://bibliotekanauki.pl/articles/380264.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innowacyjne materiały odlewnicze
odsiarczanie spalin
gips syntetyczny
forma gipsowa
forma ceramiczna
innovative foundry materials
flue gas desulfurization (FGD)
waste gypsum (synthetic)
gypsum mould
ceramic mould
Opis:: This article investigates possible use of waste gypsum (synthetic), recovered via flue-gas desulfurization from coal-fired electric power plants, in foundries. Energy sector, which in Eastern Europe is mostly composed from coal-fired electric power plants, is one of the largest producers of sulfur dioxide (SO2). In order to protect the environment and reduce the amount of pollution flue-gas desulfurization (FGD) is used to remove SO2 from exhaust flue gases of fossil-fuel power plants. As a result of this process gypsum waste is produced that can be used in practical applications. Strength and permeability tests have been made and also in-depth analysis of energy consumption of production process to investigate ways of preparing the synthetic gypsum for casting moulds application. This paper also assesses the chemical composition, strength and permeability of moulds made with synthetic gypsum, in comparison with moulds made with traditional GoldStar XL gypsum and with ceramic moulds. Moreover examination of structure of synthetic gypsum, the investigations on derivatograph and calculations of energy consumption during production process of synthetic gypsum in wet flue-gas desulfurization were made. After analysis of gathered data it's possible to conclude that synthetic gypsum can be used as a material for casting mould. There is no significant decrease in key properties, and on the other hand there is many additional benefits including low energy consumption, decreased cost, and decreased environmental impact.
Źródło:: Archives of Foundry Engineering; 2012, 12, 3; 5-8
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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