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Development of a PID based on-line tar measurement method: Proof of concept
KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Kemisk teknologi.
KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Kemisk apparatteknik.
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2013 (Engelska)Ingår i: Fuel, ISSN 0016-2361, E-ISSN 1873-7153, Vol. 113, s. 113-121Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

In this study, a proof of concept was conducted for an on-line tar analyzer based on photo ionization detection (PID). Tar model compounds (naphthalene, acenaphthene, acenaphthylene, fluorene, indane and indene) were used for the initial investigation of the analysis method. It was found that the analysis method has a high sensitivity and a linear behavior was observed between the PID response and the tar concentration over a wide concentration span. The on-line tar analysis method was successfully validated against the solid phase adsorption (SPA) method using a real producer gas.

Ort, förlag, år, upplaga, sidor
2013. Vol. 113, s. 113-121
Nyckelord [en]
Gasification, Photo ionization, PID, Tar On-line analysis
Nationell ämneskategori
Kemiteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-131186DOI: 10.1016/j.fuel.2013.05.075ISI: 000323937300014Scopus ID: 2-s2.0-84879242781OAI: oai:DiVA.org:kth-131186DiVA, id: diva2:654778
Anmärkning

QC 20131008

Tillgänglig från: 2013-10-08 Skapad: 2013-10-08 Senast uppdaterad: 2017-12-06Bibliografiskt granskad
Ingår i avhandling
1. Sampling and Analysis of Tars by Means of Photo Ionization Detection and Solid Phase Micro Extraction
Öppna denna publikation i ny flik eller fönster >>Sampling and Analysis of Tars by Means of Photo Ionization Detection and Solid Phase Micro Extraction
2013 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Gasification of biomass will likely play an important role in the production of energy and chemicals in a future sustainable society. However, during gasification impurities, such as tars, will be formed. Tars may cause fouling and blockages of equipment downstream the gasifier. It is therefore important to minimize the formation of tars, alternatively to remove the formed tars. These processes need to be monitored, which makes it necessary to develop tar analysis methods suitable for this task.

This work describes the development of two tar analysis methods, an on-line method based on a photoionization detector (PID) and an off-line method based on solid phase microextraction (SPME). Both methods were successfully validated against the established solid phase adsorption (SPA) method.

The method based on PID was shown to have a very fast response time. Furthermore, the PID method is selective towards tar, but only limited information will be obtained regarding the composition of the tar compounds. The PID method is suitable for applications where it is important to detect fast changes of the tar concentration, i.e. process monitoring.

The SPME method was shown to be a very sensitive method for qualitative and quantitative tar analysis. The sampling temperature was shown to be crucial for obtaining analysis results with the wanted detection limit. The SPME method is suitable for applications where extremely low detection and quantification limits are needed, i.e. for syngas production.

 

Ort, förlag, år, upplaga, sidor
Stockholm: KTH Royal Institute of Technology, 2013. s. viii, 77
Serie
Trita-CHE-Report, ISSN 1654-1081 ; 2013:39
Nationell ämneskategori
Teknik och teknologier
Identifikatorer
urn:nbn:se:kth:diva-131115 (URN)978-91-7501-861-4 (ISBN)
Disputation
2013-10-25, E3, Lindstedtsvägen 3, KTH, Stockholm, 10:00 (Engelska)
Opponent
Handledare
Anmärkning

QC 20131009

Tillgänglig från: 2013-10-09 Skapad: 2013-10-08 Senast uppdaterad: 2013-10-09Bibliografiskt granskad

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Engvall, Klaus

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