Converting waste gases from pulp mills into value‐added chemicals

Burgess, Tom L.; Gibson, Andrew; Furstein, Saul J.; Wachs, Israel E.

doi:10.1002/ep.670210311

Cited by 17 publications

(21 citation statements)

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“…Figure 11 presents the formation of by-products over the 1.5V/SiTi(30) catalyst to study the performance of the catalyst in more detail. The main products were sulfur dioxide, carbon monoxide, and dimethyl disulphide, as expected based on the literature [19,49]. (1)…”

Section: Results Of Catalytic Oxidation Testssupporting

confidence: 81%

Catalytic Activity Studies of Vanadia/Silica–Titania Catalysts in SVOC Partial Oxidation to Formaldehyde: Focus on the Catalyst Composition

et al. 2018

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Abstract:In this work, silica-titania supported catalysts were prepared by a sol-gel method with various compositions. Vanadia was impregnated on SiO 2 -TiO 2 with different loadings, and materials were investigated in the partial oxidation of methanol and methyl mercaptan to formaldehyde. The materials were characterized by using N 2 physisorption, X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), X-ray photoelectron spectroscopy (XPS), Scanning transmission electron microscope (STEM), NH 3 -TPD, and Raman techniques. The activity results show the high importance of an optimized SiO 2 -TiO 2 ratio to reach a high reactant conversion and formaldehyde yield. The characteristics of mixed oxides ensure a better dispersion of the active phase on the support and in this way increase the activity of the catalysts. The addition of vanadium pentoxide on the support lowered the optimal temperature of the reaction significantly. Increasing the vanadia loading from 1.5% to 2.5% did not result in higher formaldehyde concentration. Over the 1.5%V 2 O 5 /SiO 2 + 30%TiO 2 catalyst, the optimal selectivity was reached at 415 • C when the maximum formaldehyde concentration was~1000 ppm.

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Section: Results Of Catalytic Oxidation Testssupporting

confidence: 81%

Catalytic Activity Studies of Vanadia/Silica–Titania Catalysts in SVOC Partial Oxidation to Formaldehyde: Focus on the Catalyst Composition

et al. 2018

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“…The pulp mill chip bin emissions contain in addition to methanol and sulfur-containing volatile organic compounds also hydrogen sulfide, terpenic compounds, amines, higher alcohols, amines, water vapor and solid particulates [290,291,330,331]. Sulfur is a well-known catalyst poison, as discussed above, which is studied very widely in different applications [332][333][334].…”

Section: Considerations On Catalyst Durability In Utilization Of Orgamentioning

confidence: 99%

Utilization of Volatile Organic Compounds as an Alternative for Destructive Abatement

et al. 2015

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Abstract:The treatment of volatile organic compounds (VOC) emissions is a necessity of today. The catalytic treatment has already proven to be environmentally and economically sound technology for the total oxidation of the VOCs. However, in certain cases, it may also become economical to utilize these emissions in some profitable way. Currently, the most common way to utilize the VOC emissions is their use in energy production. However, interesting possibilities are arising from the usage of VOCs in hydrogen and syngas production. Production of chemicals from VOC emissions is still mainly at the research stage. However, few commercial examples exist. This review will summarize the commercially existing VOC utilization possibilities, present the utilization applications that are in the research stage and introduce some novel ideas related to the catalytic utilization possibilities of the VOC emissions. In general, there exist a vast number of possibilities for VOC OPEN ACCESSCatalysts 2015, 5 1093 utilization via different catalytic processes, which creates also a good research potential for the future.

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“…The laboratory studies indicated that combined use of ozone and catalysts were essential for the complete oxidation of methanol and TRS compounds such as DMS to CO 2 and SO 2 (>99%) [10][11][12][13][14]. Laboratory scale reactors were valuable in estimating kinetic parameters, determining effects of process variables and for catalyst development.…”

Section: Comparing Laboratory Studies With Pilot-scale Testsmentioning

confidence: 99%

“…Researchers have attempted to develop technologies to reduce emissions from the pulp and paper industry [10][11][12][13][14][15]. Burgess et al [10] used a V 2 O 5 /TiO 2 catalysts and oxygen at temperatures >3508C to convert the methanol in aqueous waste streams to formaldehyde [10], a product that could subsequently be used in resins.…”

Section: Introductionmentioning

confidence: 99%

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Pilot‐scale study on ozone‐enhanced catalytic oxidation of waste gas emissions from the pulp and paper industry

Sahle‐Demessie

Almquist

Devulapelli

2011

Env Prog and Sustain Energy

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Field studies were conducted at Domtar's Kraft pulp and paper mill (Hawesville, KY) for 2 weeks to investigate the treatment of high volume, low concentration (HVLC) waste gas streams using ozoneenhanced catalytic oxidation technology. The contaminants in the HVLC waste gas from the pulping area of the mill contained mainly methanol (360 6 80 ppm) and total reduced sulfur compounds [dimethyl sulfide (DMS) (4400 6 670 ppm) and dimethyl disulfide (150 6 25 ppm). The catalysts used in the field studies included ViO 2 /TiO 2 and CuO/ MoO 3 /ã-Al 2 O 3 . The results of the field study showed ozone-to-sulfur ratios >2, space velocities <1000 h 21 , and reaction temperatures !2508C are required to achieve >90% destruction of DMS in the HVLC waste gas stream. Ozone-enhanced catalytic oxidation has key environmental advantages over incineration, including mild operating temperatures and thus, lower energy costs and lower NO x formation. Although the technology appeared to be feasible at the laboratory scale, the field study data revealed that several obstacles must be overcome prior to this technology being implemented at large scale. 2010 American Institute of Chemical Engineers Environ Prog, 30: 268-277, 2011*

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Converting waste gases from pulp mills into value‐added chemicals

Cited by 17 publications

References 0 publications

Catalytic Activity Studies of Vanadia/Silica–Titania Catalysts in SVOC Partial Oxidation to Formaldehyde: Focus on the Catalyst Composition

Catalytic Activity Studies of Vanadia/Silica–Titania Catalysts in SVOC Partial Oxidation to Formaldehyde: Focus on the Catalyst Composition

Utilization of Volatile Organic Compounds as an Alternative for Destructive Abatement

Pilot‐scale study on ozone‐enhanced catalytic oxidation of waste gas emissions from the pulp and paper industry

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