Up-to-date Off-Gas Cleaning Systems with Selective Catalytic Reduction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU128751" target="_blank" >RIV/00216305:26210/18:PU128751 - isvavai.cz</a>

Výsledek na webu

<a href="https://secure.confis.cz/chisa2018/UserPages/cd/Files/0819.pdf" target="_blank" >https://secure.confis.cz/chisa2018/UserPages/cd/Files/0819.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Up-to-date Off-Gas Cleaning Systems with Selective Catalytic Reduction

Popis výsledku v původním jazyce

Flue gas (and/or off-gas in case of thermal processing of waste) cleaning system plays an important role from the environmental point of view because of more and more sweeping environmental legislation. Investment for such a system can achieve up to fifty percent of the overall unit. Reduction of nitrogen oxides (NOX) belongs to most important parts of systems like this. During combustion (incineration in case of waste treatment) process harmful emissions are released. Since the limits are stricter and stricter selective non-catalytic reduction (SNCR) becomes a not sufficient process at present. From this and other reasons selective catalytic reduction (SCR) becomes a more used off-gas cleaning system because of higher efficiency, functionality and flexibility enabling meeting the environmental requirements. A survey of using SCR in modern off-gas cleaning systems of WtE units with emphasis on applicability is shown. A comprehensive analysis is aimed at operational conditions of SCR especially the affection by inlet concentration of SO2 in off-gas and temperature of the reaction. Both of these parameters may in combination represent operating restrictions due to the formation of ammonium bisulfate and are thereby causing catalyst deactivation. The fact that a convenient integration of the SCR system into a complex off-gas cleaning system influences energy demand of the whole unit by minimizing repeating heating (re-heating), number of apparatuses (key pieces of equipment) and a consequent operational and investment costs are taken into account, analysed and designed to provide an optimum off-gas cleaning system.

Název v anglickém jazyce

Up-to-date Off-Gas Cleaning Systems with Selective Catalytic Reduction

Popis výsledku anglicky

Flue gas (and/or off-gas in case of thermal processing of waste) cleaning system plays an important role from the environmental point of view because of more and more sweeping environmental legislation. Investment for such a system can achieve up to fifty percent of the overall unit. Reduction of nitrogen oxides (NOX) belongs to most important parts of systems like this. During combustion (incineration in case of waste treatment) process harmful emissions are released. Since the limits are stricter and stricter selective non-catalytic reduction (SNCR) becomes a not sufficient process at present. From this and other reasons selective catalytic reduction (SCR) becomes a more used off-gas cleaning system because of higher efficiency, functionality and flexibility enabling meeting the environmental requirements. A survey of using SCR in modern off-gas cleaning systems of WtE units with emphasis on applicability is shown. A comprehensive analysis is aimed at operational conditions of SCR especially the affection by inlet concentration of SO2 in off-gas and temperature of the reaction. Both of these parameters may in combination represent operating restrictions due to the formation of ammonium bisulfate and are thereby causing catalyst deactivation. The fact that a convenient integration of the SCR system into a complex off-gas cleaning system influences energy demand of the whole unit by minimizing repeating heating (re-heating), number of apparatuses (key pieces of equipment) and a consequent operational and investment costs are taken into account, analysed and designed to provide an optimum off-gas cleaning system.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/TE02000236" target="_blank" >TE02000236: Centrum kompetence pro energetické využití odpadů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Conference Proceeding 23rd International Congress of Chemical and Process Engineering, CHISA 2018 and 21st Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2018

ISBN

9781510881198

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

290-295

Název nakladatele

Czech Society of Chemical Engineering

Místo vydání

Prauge, Czech republic

Místo konání akce

Prague

Datum konání akce

25. 8. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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