PL
 |
EN
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 13

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
Content available Effect of the synthetic zeolite modification on its physicochemical and catalytic properties in the preparation of the catalysts effectively removing sulphur dioxide from exhaust gases
Marcewicz-Kuba A.
Polish Journal of Chemical Technology
|
2016
|
Vol. 18, nr 2
40--45
EN
This work presents the research results of the influence of modification deSONOx type catalyst of the sulfur dioxide emissions in the process of the hard coal combustion. The addition of zeolite catalysts modified by transition metal ions: V, Mg, activated by zinc sorbent with or without graphite addition caused the deeper burning of coal grains. The addition of the deSOx catalysts to the coal resulted in lowered sulphur dioxide emission. The addition of unmodified zeolite to coal during combustion reduced sulphur dioxide emission at about 5%. The modification of the support by both V and Mg reduced the amount of sulphur dioxide significantly. The obtained results of SO2 removal from exhaust gases were from 34.5% for Sip/Mg to 68.3% for Sip/V.
2
Badania pracy instalacji energetycznego wykorzystania metanu z powietrza wentylacyjnego kopalń w Jastrzębiu-Zdroju
Stasińska B., Marcewicz-Kuba A., Kucharczyk B.
Bezpieczeństwo Pracy i Ochrona Środowiska w Górnictwie
|
2015
|
nr 3
22--28
PL
Praca przedstawia wyniki badań, których przedmiotem było uruchomienie i praca pilotażowej instalacji energetycznego wykorzystania metanu z powietrza wentylacyjnego kopalń. Badania prowadzono w ramach projektu „Proekologiczna technologia utylizacji metanu” w 2012 r. (maj–lipiec) w kopalni „Jas-Mos”, na gazach z szybu Jas VI, we współpracy z JSW S.A. Wykazano możliwość pracy instalacji bez konieczności zewnętrznego podgrzewania powietrza wentylacyjnego i odzysku energii wydzielanej podczas reakcji katalitycznego utleniania metanu.
EN
Study about work of installation in terms of energy of methane air ventilation from mine in Jastrzębie-Zdrój This work presents application of catalytic oxidation of methane installation (IUMK-100) from ventilation air with the possibility for energy use in coal mine Jas-Mos in Jastrzębie-Zdrój. It presents the researches carried out 3 month on a quarter-technical scale, in terms of the project “Pro-ecological technology of mine methane utilization” POIG.01.03.01-24-072/08. It shows the work conditions of the catalytic flow reactor cooperating with heat exchanger, allowing for autothermal run of the process and production of thermal energy. Moreover, the obtained data show that the appropriate concentration of methane in the reaction gases enables not only the autothermal reactor operation, but also receiving the additional large thermal power, which allows industrial and economically efficient exploitation of mine ventilation air methane. It presents development of new technologies to enable the oxidation of methane from ventilation air.
3
Content available Reactor of catalytic methane oxidation from ventilation air - from laboratory to quarter-technical scale prototype
Stasińska B., Nazimek D., Kuśmierz M., Marcewicz-Kuba A.
AGH Journal of Mining and Geoengineering
|
2012
|
Vol. 36, no. 3
331-337
EN
This paper presents an application of laboratory research results of kinetics methane oxidation generated in the gradientless reactor for formulating the parameters of a quarter-technical scale reactor. The experimental data obtained in the laboratory scale were found to correlate well with theoretical calculations. Hence, the results led to propose the parameters for the quarter-technical scale prototype reactor.
PL
W pracy przedstawiono zastosowanie wyników badań laboratoryjnych kinetyki utleniania metanu uzyskanych w reaktorze bezgradientowym do opracowania parametrów reaktora w skali ćwierć-technicznej. Zaobserwowano wysoką zgodność danych obliczonych teoretycznie z danymi doświadczalnymi uzyskanymi w skali wielkolaboratoryjnej. Uzyskany rezultat pozwolił na zaproponowanie parametrów prototypu reaktora w skali ćwierć-technicznej.
4
The Activity of SO2 Removal from Combustion Gases by the DESONOX Type Catalyst Supported on by the DESONOX Type Catalyst Supported on Montmorillonite and Zeolite
Marcewicz-Kuba A., Olszewska D.
Polish Journal of Chemistry
|
2008
|
Vol. 82, nr 1-2
43-47
EN
In this paper the authors compared the modified montmorillonite and synthetic zeolite used as supports of the DESONOX type catalyst with the standard catalyst based on MgO. The addition of DESONOX catalyst doped with vanadium ions to combusted hard coal (mass ratio coal to catalyst was 500:1) results in SO2 removal from exhaust gases within the range from 57% to 67% for catalysts based on modified montmorillonite. The DESONOX catalyst based on zeolite is better than those based on montmorillonite. A study of supports and catalysts texture shows that the active material with vanadium ions accumulates on the pores exit and decreased pores radius and size, as well as specific surface areas of obtainedmaterials. Prepared catalysts are better than the standardDESONOX catalyst.
5
A Role of Sulphur Dioxide Adsorption on Zeolite DESONOX Catalysts as the Factor Influencing Sulphur Dioxide Removal from Exhaust Gases
Olszewska D., Marcewicz-Kuba A.
Polish Journal of Chemistry
|
2008
|
Vol. 82, nr 1-2
199-204
EN
This paper reports the study of the relation between sulphur dioxide adsorption and sulphur dioxide removal degree from exhaust gases on DESONOX type catalysts based on the synthetic zeolite Sipernat impregnated with vanadium ions by the double impregnation method, with the use of the EDTA solution (first impregnation step) and NaOH with V2O5 solution (second impregnation step) for different periods of time: 4, 16 and 32 minutes. The studied materials are designated as: support – Sipernat, catalysts: Sipernat VX, where X is the impregnation time in minutes. The sulphur dioxide adsorption for all catalysts was smaller than that for the Sipernat support. The active material (vanadium ions) decreased the amount of sulphur dioxide adsorption centers. The samples, which adsorb smaller amount of sulphur dioxide, are better DESONOX catalysts. The sample Sipernat V16 is the best of the studied catalysts.
6
Content available The influence of a hard coal type on the degree of sulphur dioxide removal
Marcewicz-Kuba A., Olszewska D.
Polish Journal of Chemical Technology
|
2007
|
Vol. 9, nr 3
127-129
EN
In this paper the authors have studied the properties of zeolite and montmorillonite doped with the nickel and cobalt cations in the removal of SO2 from the combustion gases process based on the DESONOX method. Burning coal from the hard coal from the Silesian Coal Basin mine "Julian" and the Lubelskie Coal Basin mine ,,Bogdanka" with supports only - did not show any reduction of the SO2 emission in the combustion gases.
7
Content available Application of recycled natural aluminasilicate doped with vanadium for the decontamination of the air
Marcewicz-Kuba A., Olszewska D.
Polish Journal of Chemical Technology
|
2007
|
Vol. 9, nr 2
65-67
EN
This paper reports studies on the influence of vanadium concentration on the catalytic activity of DESONOX catalysts (in DESOX reaction) based on modified montmorillonite from Jelsovy Potok. The investigation of the influence on the physicochemical properties of the catalysts on their behaviour has also been studied.
8
Content available remote Wpływ rodzaju węgla kamiennego na wielkość emisji zanieczyszczeń gazowych
Olszewska D., Marcewicz-Kuba A.
Gospodarka Surowcami Mineralnymi
|
2007
|
T. 23, z. 3s
199-205
PL
Węgiel kamienny jako surowiec naturalny jest bardzo zróżnicowany pod względem właściwości fizykochemicznych i opałowych, co skutkuje różnicami emisji szkodliwych zanieczyszczeń gazowych do atmosfery w trakcie procesu spalania. Autorzy porównują dwa typy węgla kamiennego 'Julian' z Górnośląskiego Zagłębia Węglowego i 'Bogdanka' z Lubelskiego Zagłębia Węglowego oraz emisje SO2 powstającego w trakcie spalania tych węgli, a także przedstawiają metodę zmniejszenia tych emisji przy zastosowaniu katalizatorów spalania.
EN
The paper present the influence of hard coal type on an emission of sulphur dioxide produced in the combustion of coal from different coal from the main 'Julian' and 'Bogdanka'. The use of active material of DESONOX catalyst may drastically decrease SO2 emission in the range 44-90%.
9
Content available remote Niskoemisyjne spalanie węgla kamiennego z zastosowaniem katalizatorów DESONOX
Marcewicz-Kuba A., Olszewska D.
Gospodarka Surowcami Mineralnymi
|
2007
|
T. 23, z. 3s
183-188
PL
W pracy przedstawiono wyniki badań nad wpływem modyfikacji katalizatorów typu DESONOX na wielkość emisji ditlenku siarki, powstającego w trakcie procesu spalania węgla kamiennego. Przedstawiono właściwości katalitycznych katalizatorów typu DESONOX na bazie zeolitu promowanych jonami metali przejściowych, niklu aktywnego kobaltu. Impregnacje materiału aktywnego wykonano różnymi metodami w celu określenia wpływu metody nanoszenia materiału aktywnego na nośnik na aktywność katalityczną katalizatora DESONOX.
EN
The zeolite is exemplifying promising material as the DESONOX type of catalysts. Main goal of this work is preparation of catalyst. Support was impregnated with cobalt or nickel ions by different methods: wet impregnation, double impregnation, adsorption from water and water-saccharose solution of cobalt and nickel ions. The catalysts were physical-chemical characterized (texture, structure). The catalytic properties were studied by reaction of burn with coal in the flow reactor. Hard coal from mine 'Julian' and 'Bogdanka' from Poland with or without the catalysts addition were burnt in an atmosphere of air at 1123 K during 4 hours and using an electric furnace. The mass ratio of the DESONOX catalyst added to the investigated samples of the hard coal was 1:500.
10
Content available remote Co-precipitated and impregnated DESONOX type catalysts - comparison of the sewage generated during the synthesis process
Marcewicz-Kuba A., Nazimek D.
Polish Journal of Chemical Technology
|
2005
|
Vol. 7, nr 4
21-23
EN
Combustion of hard coal causes emission of gaseous chemicals (SO2, NOx), airborne particles and fly ashes into the atmosphere. The catalytic process of SO2 removal from combustion gases takes place on the grain plane of hard coal. The method proposed for the removal of SO2 from combustion gases is quite different from the classical wet desulphurization methods. This solution eliminates the technically complicated wet desulphurization of exhausts: sulphur within the hard coal reacts with catalyst compounds, which enriches the ashes with sulphates. Technical research has shown that the DESONOX type catalyst causes the lowering of both sulphur dioxide and nitrogen oxide emission from the exhaust coming from combusting the solid fuels. This document presents only the DESOX reactions using the DESONOX type catalysts. This paper reports on the studies concerning the methods of the DESONOX catalysts preparation and their influence on the amount of the generated sewage and on the catalytic activity of a number of DESONOX catalysts (during the course of the DESOX reaction). The results of the research on the influence of the catalysts physicochemical properties on their activity are also reported.
11
Content available remote Wpływ faz aktywnych modyfikatorów katalizatorów DESONOX na ich aktywność w procesie odsiarczania gazów pochodzących ze spalania węgla kamiennego
Marcewicz-Kuba A., Nazimek D., Kubica K.
Przemysł Chemiczny
|
2003
|
T. 82, nr 8-9
736-740
12
Influence of the catalyst desonox preparation on their physico-chemical properties.
Marcewicz-Kuba A., Nazimek D.
Prace Naukowe Instytutu Chemii i Technologii Nafty i Węgla Politechniki Wrocławskiej. Konferencje
|
2002
|
Vol. 10, nr 57
469-474
EN
A method for removing SO2 from flue gases is described, which is quite different from classical wet desulphurization methods. The effect of the preparation technique on the physico-chemical properties of desonox catalysts is described. The influence of the total surface area and other physico-chemical properties of the catalyst on its behavior is discussed.
13
Influence of added vanadium on the activity of desonox catalysts in the desox reaction.
Marcewicz-Kuba A., Nazimek D.
Prace Naukowe Instytutu Chemii i Technologii Nafty i Węgla Politechniki Wrocławskiej. Konferencje
|
1999
|
Vol. 9, nr 56
159-165
EN
The catalytic process of the removal of SO2 from combustion gases takes place on the grain plane of hard coal. This process is competitive with regard to classical desulphurization processes. The method proposed for the removal of SO2 from combustion gases, described in this paper, is quite different from wet classical desulphurization methods. This paper reports the studies on the influence of vanadium and zinc concentration on the catalytic activity of number DESONOX catalysts (in the course of DESOX reaction). It also investigates the influence of the vanadium concentrate in the catalyst, total surface area and other physico-chemical properties of the catalyst on the behaviour.
PL
W pracy przedstawiono wpływ stężenia wanadu, oraz innych właściwości fizykochemicznych katalizatorów DESONOX, na ich aktywność w reakcji usuwania SO2 z gazów spalinowych pochodzących ze spalin węgli kamiennych. Stwierdzono wyraźny wpływ zawartości V w badanych katalizatorach na ich aktywność oraz wpływ dodatku dolomitu, jako substancji alkalizującej odpady paleniskowe. Zauważono, że dodatek dolomitu nie zmienia mechanizmu reakcji DESONOX, lecz jedynie podnosi aktywność właściwą badanych katalizatorów DESONOX.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.