Removal technology of PCDDs/PCDFs in flue gas from MSW incinerators by fabric bag filter and SCR system

Fujii, Tatsuhiro; Murakawa, T; Maeda, Norio; Kondo, M.; Nagai, Kenichi; Hama, Takao; Ota, Kei

doi:10.1016/0045-6535(94)90374-3

Cited by 19 publications

(23 citation statements)

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“…PCDD/F catalysts tend to be effective also for NO x removal [154]. The emission of PCDD/F from operating incinerators is controlled by carbon addition [155,156]. The reaction between the PCDD/F and the OH radical at ambient temperature (297 K) was studied by Kwok et al [157], and kinetics for this temperature were established for atmospheric modeling.…”

Section: Destruction Reactions On the Solid Phasementioning

confidence: 99%

The formation of dioxins in combustion systems

Stanmore

2004

Combustion and Flame

432

215

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Section: Destruction Reactions On the Solid Phasementioning

confidence: 99%

The formation of dioxins in combustion systems

Stanmore

2004

Combustion and Flame

432

215

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“…It was assumed that the effects of thermal decomposition were small. The heat retention temperature was set as 170 C, because the temperature of the gas passing through the bag filter at the incineration treatment facility was 170 C. 20…”

Section: Examination Of Analysis Conditionsmentioning

confidence: 99%

Unexpected Aldehyde Generation in the Exhaust Gas at Waste Incineration Facilities

et al. 2019

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Acid gases generated during the thermal treatment of waste are neutralized using devices, such as bag filters coated with slaked lime. However, residual trace organic substances can react with the highly reactive slaked lime. This study investigates the dynamics of organic substances generated in the bag filter when slaked lime is used in the exhaust gas treatment process. The mechanism of aldehyde generation was clarified using head space gas chromatography mass spectrometer (HS-GC/MS). Results indicated that methanol was converted to formaldehyde at a conversion ratio of 0.097% and ethanol was converted to acetaldehyde at a conversion ratio of 0.260%. In addition, when amines used as emulsifiers during slaked lime production persisted in the matrix, acetaldehyde formed at a maximum concentration of 121 mg/m 3 . The simulation method developed in this study can be used for the initial evaluation of aldehydes unexpectedly produced in an incineration treatment facility.

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“…The high temperature and long residence time limits the production of dioxins/ furans (Karstensen, 2008). The type of APC system at the MSW facility consisting of PAC addition and catalytic destruction of organics has a removal efficiency of dioxins/furans that can be greater than 90% effective (Chang et al, 2007;Fujii et al, 1994). Thus, the cement kiln and control MSW incinerator emissions should decrease the significance of daily process variability.…”

Section: Introductionmentioning

confidence: 97%

Comparison of variability in dioxin and furan data acquired using single train and simultaneous multiple train stack sampling methods

Davis

Pollard

Chandler

2014

Journal of the Air & Waste Management Association

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The variance of polychlorinated dibenzo-p-dioxin (PCDD; dioxin) and polychlorinated dibenzofuran (PCDF; furan) data obtained from single-and simultaneous multiple train methods was compared. Single train triplicate data were used from 4 stack tests obtained from a long dry kiln cement plant and 18 stack tests from a municipal solid waste (MSW) incinerator. Data from the American Society of Mechanical Engineers (ASME) report Reference Method Accuracy and Precision (ReMAP) (Lanier and Hendrix, 2001) were used for the simultaneous multiple samples, which accounted for 27 data points. Nineteen data points were acquired from an ASME research facility, 5 from a MSW incinerator unrelated to the single train MSW incinerator, and 3 from a lightweight aggregate kiln (LWAK). The ReMAP procedure was used to determine the relationship between the standard deviation and the concentration of the single train and simultaneous multiple train data. Results indicated that there was benefit from the use of simultaneous multiple train sampling for concentrations above 129 pg toxic equivalency (TEQ)/m 3 . There was no indication of benefit from the use of simultaneous multiple train sampling at concentrations below 129 pg TEQ/m 3 . Implications: Precision of stack sampling data can be the difference between meeting and failing compliance limits. Generally, three dioxin/furan samples are acquired when stack sampling to meet compliance regulations. A reliable estimation of the data's true concentration is not possible with this small amount of data. Increasing the precision decreases the chance that the acquired concentration deviates greatly from the true concentration. Facilities that use the appropriate stack sampling method will benefit by either improved data precision or minimal stack sampling expenses. The observations made suggest that facilities that are expected to have dioxin/furan concentrations above 129 pg TEQ/m 3 would increase the precision of samples by using simultaneous multiple train sampling.

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Removal technology of PCDDs/PCDFs in flue gas from MSW incinerators by fabric bag filter and SCR system

Cited by 19 publications

References 0 publications

The formation of dioxins in combustion systems

The formation of dioxins in combustion systems

Unexpected Aldehyde Generation in the Exhaust Gas at Waste Incineration Facilities

Comparison of variability in dioxin and furan data acquired using single train and simultaneous multiple train stack sampling methods

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