Experimental test on a novel dual fluidised bed biomass gasifier for synthetic fuel production

Göransson, Kristina; Söderlind, Ulf; Zhang, Wennan

doi:10.1016/j.fuel.2010.12.035

Cited by 62 publications

(28 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The main advantages are that the gasifier can easily process various solid fuels, including high moisture biomass, and that the biomass pre-treatment is fairly simple (Zhang 2010). The details can be found in the literature (Göransson et al 2011;He et al 2012). A detailed study on syngas cleaning was made by Göransson et al (2011).…”

Section: Bigcc and Its Implementation In A Tmp Millmentioning

confidence: 99%

See 1 more Smart Citation

Techno-economic evaluation of a mechanical pulp mill with gasification

Engstrand

Björkqvist

et al. 2013

Nordic Pulp &Amp; Paper Research Journal

View full text Add to dashboard Cite

SUMMARY: Mechanical pulping processes, including thermomechanical pulp (TMP), groundwood (SGW and PGW), and chemithermomechanical pulp (CTMP) processes, each have a very high wood-to-pulp yield. Producing pulp by means of these processes is a prerequisite for paper (such as printing paper and paperboard) grades requiring high printability and stiffness. However, mechanical pulping processes consume a great amount of electricity, which may account for up to 40% of the total pulp production cost. In mechanical pulping mills, wood (biomass) residues are commonly utilized for electricity production through an associated combined heat and power (CHP) plant. This techno-economic evaluation deals with the possibility of utilizing a biomass integrated gasification combined cycle (BIGCC) plant in place of the CHP plant. Implementing BIGCC in a mechanical pulp production line might greatly improve the overall energy efficiency and cost-effectiveness, especially when more biomass from forest (such as branches and tree tops) is available. When the fibre material that negatively affects pulp properties is utilized as a bioenergy resource, the overall efficiency will be further improved. A TMP+BIGCC mathematical model is developed with ASPEN Plus. By means of modeling, three cases are studied: 1) adding more forest biomass logging residues in the gasifier, 2) adding the reject fibres in the gasifier, and 3) decreasing the TMP-specific electricity consumption (SEC) by up to 50%. For a TMP+BIGCC mill, the energy supply and consumption are analyzed in comparison with a TMP+CHP mill. The production profits are evaluated. ADDRESSES OF THE AUTHORS

show abstract

Section: Bigcc and Its Implementation In A Tmp Millmentioning

confidence: 99%

“…The details can be found in the literature (Göransson et al 2011;He et al 2012). A detailed study on syngas cleaning was made by Göransson et al (2011). Eriksson and Kjellström (2010) suggested that the investment for a separate gasifier and gas cleaning unit amounts to about 25% of the CHP investment.…”

Section: Bigcc and Its Implementation In A Tmp Millmentioning

confidence: 99%

Techno-economic evaluation of a mechanical pulp mill with gasification

Engstrand

Björkqvist

et al. 2013

Nordic Pulp &Amp; Paper Research Journal

View full text Add to dashboard Cite

show abstract

“…So far, the most attractive design is supposed to have biomass gasification in the BFB and char combus-tion in the CFB from the viewpoints of particle circulation, fuel conversion, tar cracking, etc. Table 1 presents some well-known DFBGs [1,[8][9][10][11][12][13][14][15][16][17][18][19][20][21] and their measurement data. Similar summaries can be found [8,9].…”

Section: Dfbgs and The Miun Gasifiermentioning

confidence: 99%

“…The S/B ratios are 0.3, 0.6, and 0.9, respectively. The details on experiments have been reported elsewhere [8].…”

Section: Dfbgs and The Miun Gasifiermentioning

confidence: 99%

See 1 more Smart Citation

Simulation of biomass gasification in a dual fluidized bed gasifier

Göransson

Söderlind

et al. 2012

Biomass Conv. Bioref.

View full text Add to dashboard Cite

Biomass gasification with steam in a DFBG (dual fluidized bed gasifier) was simulated with ASPEN Plus. From the model, the yield and composition of the syngas, and the contents of tar and char can be calculated. The model has been evaluated against the experimental results measured on a 150 KWth MIUN (Mid Sweden University) DFBG. The model predicts that the content of char transferred from the gasifier to the combustor decreases from 22.5 wt. % of the dry and ash-free biomass at gasification temperature 750• C to 11.5 wt. % at 950• C, but is insensitive to S/B (Steam to Biomass Mass Ratio). The H 2 concentration is higher than that of CO under the normal DFBG operation conditions, but they will change positions when the gasification temperature is too high above about 950• C, or the S/B ratio is too low under about 0.15. The biomass moisture content is a key parameter for a DFBG to be operated and maintained at a high gasification temperature. The model suggests that the gasification temperature is difficult to be kept above 850• C when the biomass moisture content is higher than 15.0 wt. %. Thus, a certain amount of biomass needs to be added in the combustor to provide sufficient heat for biomass devolatilization and steam reforming. Tar content in the syngas can also be predicted from the model, which shows a decreasing trend of the tar with the gasification temperature and the S/B ratio. The tar content in the syngas decreases significantly with gasification residence time which is a key parameter.

show abstract