Analysis of trace components in synthesis gas generated by black liquor gasification

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Öhrman, OlovRISE,SP Energy Technology Center (author)

Analysis of trace components in synthesis gas generated by black liquor gasification

Article/chapterEnglish2012

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Elsevier BV,2012
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LIBRIS-ID:oai:DiVA.org:ri-6958
https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-6958URI
https://doi.org/10.1016/j.fuel.2012.05.052DOI
https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-6236URI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype

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Validerad; 2012; 20120625 (ysko)
The only pressurized black liquor gasifier currently in operation is located in Sweden. The composition of the main components in the gas has been reported previously. The main components are H 2, CO, CO 2, N 2, CH 4, and H 2S. In the present work, trace components in the gas have been characterized and the results are hereby reported for the first time. Samples were taken at two occasions during a one year period. The benzene concentration in the gas varied only slightly and the average concentration was 158 ppm. Benzene is formed by thermal cracking of the biomass. The COS concentration varied substantially and the average concentration was 47 ppm. The variations may be related to how the quench is operated. A few ppm of C 2-hydrocarbons were also observed in the gas and the variation was probably a result of varying oxygen to black liquor ratio. No tars were observed in the gas. However, tar compounds, such as phenanthrene, pyrene, fluoranthene and fluorene were detected in deposits found on the pipe walls after the gas cooler. The concentration of particles in the synthesis gas was very low; <0.1 mg/N m 3, which is comparable to the particulate matter in ambient air. Submicron particles were comprised of elements such as C, O, Na, Si, S, Cl, K, and Ca, and these particles probably originated from the black liquor. Larger particles were comprised mainly of Fe, S and Ni and these particles probably resulted from corrosion of steel in the plant pipe-work. In summary, the concentrations of trace components and particles in the gas are quite low.

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Maskinteknik Energiteknik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Energy Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Kemiteknik Kemiska processer hsv//swe
ENGINEERING AND TECHNOLOGY Chemical Engineering Chemical Process Engineering hsv//eng
Black liquor gasification
Impurity
Particles
Synthesis gas
Trace component
Energiteknik
Chemical Technology
Energy Engineering

Added entries (persons, corporate bodies, meetings, titles ...)

Häggström, CarolineLuleå tekniska universitet,Industriell miljö- och processteknik(Swepub:ltu)sticar (author)
Wiinikka, HenrikLuleå tekniska universitet,RISE,SP Energy Technology Center,Energivetenskap(Swepub:ltu)hewi (author)
Hedlund, JonasLuleå tekniska universitet,Industriell miljö- och processteknik(Swepub:ltu)johe (author)
Gebart, RikardLuleå tekniska universitet,RISE,SP Energy Technology Center,Energivetenskap(Swepub:ltu)rikard (author)
RISESP Energy Technology Center (creator_code:org_t)

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In:Fuel: Elsevier BV102, s. 173-1790016-23611873-7153

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By the author/editor: Öhrman, Olov; Häggström, Carol ...; Wiinikka, Henrik; Hedlund, Jonas; Gebart, Rikard

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