Catalytic filter elements for combined particle separation and nitrogen oxides removal from gas streams

Heidenreich, Steffen; Nacken, Manfred; Hackel, Marius; Schaub, Georg

doi:10.1016/j.powtec.2007.02.033

Cited by 56 publications

(18 citation statements)

References 7 publications

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“…1B). This design of catalytic filter had already been tested for combined particle separation and NO x removal from laboratory [18] to pilot scale [19]. The advantages of the catalytic layer filters is that higher face velocities can be used compared to the fixed bed catalytic filters and therefore the size and weight of the catalytic filter could be reduced.…”

Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

Tar abatement for clean syngas production during biomass gasification in a dual fluidized bed

Diego

Garcı́a-Labiano

Gayán

et al. 2016

Fuel Processing Technology

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Syngas obtained from biomass gasification needs to fulfil strong purity requirements before being used as raw material in power energy generation or chemicals manufacturing. The use of hot catalytic filter candles inside the freeboard of fluidized bed gasifiers allows obtaining clean syngas without dust and low tar content. The tar removal efficiency of four different catalytic filter designs was evaluated with real biomass tar produced in situ in a dual fluidized bed gasifier (DFBG). The tar conversion reached at the outlet of the fluidized bed gasifier was larger for the candles with catalytically active layer design. If a monolith is also incorporated, the tar conversion increases up to 95% which is one of the highest values obtained up to date. In this case, the tar content at the outlet of the catalytic filter was as low as 0.2 g/Nm 3 (N 2 free, d.b.).

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Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

Tar abatement for clean syngas production during biomass gasification in a dual fluidized bed

Diego

Garcı́a-Labiano

Gayán

et al. 2016

Fuel Processing Technology

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“…Apart from that, a similar catalyst is available from a French company named "Zéro CO Technology", which is composed of noble metals doped with cerium on a ceramic (cordierite) or metallic (FeCr alloy) support. The light-off temperature also lies between 530 and 570 K. Finally, there is also a catalytic system for nitrogen oxide reduction combined with particle filtration, which is described by Heidenreich et al [9]. The equipment from Pall Filtersystems GmbH includes silicon carbide candles with V 2 O 5 -WO 3 -TiO 2 catalysts and a mullite membrane layer with a thickness of 150 to 200 µm.…”

Section: Introductionmentioning

confidence: 99%

Application of Heterogeneous Catalysis in Small-Scale Biomass Combustion Systems

et al. 2012

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Combustion of solid biomass fuels for heat generation is an important renewable energy resource. The major part among biomass combustion applications is being played by small-scale systems like wood log stoves and small wood pellet burners, which account for 75% of the overall biomass heat production. Despite an environmentally friendly use of renewable energies, incomplete combustion in small-scale systems can lead to the emission of environmental pollutants as well as substances which are hazardous to health. Besides particles of ash and soot, a wide variety of gaseous substances can also be emitted. Among those, polycyclic aromatic hydrocarbons (PAH) and several organic volatile and semi-volatile compounds (VOC) are present. Heterogeneous catalysis is applied for the reduction of various gaseous compounds as well as soot. Some research has been done to examine the application of catalytic converters in small-scale biomass combustion systems. In addition to catalyst selection with respect to complete oxidation of different organic compounds, parameters such as long-term stability and durability under flue gas conditions are considered for use in biomass combustion furnaces. Possible catalytic procedures have been identified for investigation by literature and market research. Experimental studies with two selected oxidation catalysts based on noble metals have been carried out on a wood log stove with a retrofit system. The measurements have been performed under defined conditions based on practical mode of operation. The measurements have shown that the catalytic flue gas treatment is a promising method to reduce carbon monoxide and volatile organic compounds. Even a reduction of particulate matter was observed, although no filtering effect could be detected. Therefore, the oxidation of soot or soot precursors can OPEN ACCESSCatalysts 2012, 2 224 be assumed. The selected catalysts differed in their activity, depending on the compound to be oxidized. Examinations showed that the knitted wire catalyst showed better activity for the reduction of carbon monoxide, whereas the honeycomb induced a higher reduction of aromatic compounds. The properties of the two catalysts can be combined by integrating both together. The one drawback of the catalyst so far is the deactivation for the conversion of methane.

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“…Prior to SCS procedure, the strips of fiberglass fabric (1.5 cm × 8 cm) were washed out in acetone, dried at 120 • C and calcined at 600 • C (1 h). Catalytic layer was deposited via SCS method using water solutions of precursor salts (Cu(NO 3 ) 2 , Co(NO 3 ) 2 , Mn(NO 3 ) 3 and Ce(CH 3 COO) 3 ) and lemon acid as a fuel additive. The "precursor salt/fuel additive" ratio was equal to 1/4 by weight.…”

Section: Methodsmentioning

confidence: 99%

“…Besides dust and particulate matter, industrial emissions normally comprise carbon monoxide (CO) that causes a particular interest of researchers in the field of search and development of new catalytic technologies for its effective neutralization. Use of the gas-permeable system with supported catalytic layer to be the basic element of the complex equipment could serve as an example of novel approach allowing one to achieve high purification efficiency [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

CO oxidation over fiberglasses with doped Cu-Ce-O catalytic layer prepared by surface combustion synthesis

Desyatykh

Vedyagin

Mishakov

et al. 2015

Applied Surface Science

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Catalytic filter elements for combined particle separation and nitrogen oxides removal from gas streams

Cited by 56 publications

References 7 publications

Tar abatement for clean syngas production during biomass gasification in a dual fluidized bed

Tar abatement for clean syngas production during biomass gasification in a dual fluidized bed

Application of Heterogeneous Catalysis in Small-Scale Biomass Combustion Systems

CO oxidation over fiberglasses with doped Cu-Ce-O catalytic layer prepared by surface combustion synthesis

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