Gasification

Higman, Christopher

doi:10.1016/b978-0-12-373611-6.00011-2

Cited by 185 publications

(42 citation statements)

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“…It should be noted this thesis is written under the assumption that the reader has a base knowledge of gasification. If background reading is required then there are several previous theses from within the BIGAS Consortium which would be helpful (Brown, 2006;Bull, 2008;Rutherford, 2006), or books that will give an appropriate overview (Ahrenfeldt & Knoef, 2005;Higman & Burgt, 2003).…”

Section: Explanation and Arrangement Of Thesismentioning

confidence: 99%

Feasibility study into the potential for gasification plant in the New Zealand wood processing industry

Penniall

Williamson

2009

Energy Policy

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The purpose of this research was to investigate the feasibility of installing gasification based combined heat and power plants in the New Zealand wood processing industry. This is in accordance with Objective Four of the BIGAS Consortium.This thesis builds on previous work on Objective Four (Rutherford, 2006) where integration into MDF (Medium Density Fibreboard) was investigated. The previous research identified the most suitable form of combined heat and power was a BIG-GE (Biomass Integrated Gasification Gas Engine) process, due to both lower capital investment and overall breakeven electricity production cost. This technology has therefore been adopted, and the investigation has been carried further in this research to incorporate integration into sawmills and LVL (Laminated Veneer Lumber) plants.It is recognised, however, especially when reviewing overseas successes and failures, that the base economics are only one factor in the feasibility of a plant. The research, therefore, has moved further to investigate New Zealand policy, the power market, lower capital alternatives and novel methods of integration.

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Section: Explanation and Arrangement Of Thesismentioning

confidence: 99%

Feasibility study into the potential for gasification plant in the New Zealand wood processing industry

Penniall

Williamson

2009

Energy Policy

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“…Gasification, also called partial oxidation, converts carbonaceous fuels into gaseous products with a useable heating value (Higman and Burgt 2008). This definition excludes combustion since there is no residual heating value in the flue gases from combustion.…”

Section: Introductionmentioning

confidence: 99%

“…More detailed description of the reactions involved can be found elsewhere (Higman and Burgt 2008;Carlsson et al 2010). The initial pyrolysis stage generates pyrolysis gases (e.g., H 2 , H 2 O, CO, CO 2 , CH 4 , C x H y O z ) and a carbon-rich char as the fuel thermally decomposes.…”

Section: Introductionmentioning

confidence: 99%

“…The high temperature generated under oxygen blown entrained flow gasification conditions results in thermal cracking of tars already in the gasification reactor (Higman and Burgt 2008). However, soot particle formation in the submicron range may become more of a problem at these high temperatures (1200-1400 C) (Qin et al 2012a,b;Septien et al 2012).…”

Section: Introductionmentioning

confidence: 99%

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Online Characterization of Syngas Particulates Using Aerosol Mass Spectrometry in Entrained-Flow Biomass Gasification

Weiland

Nilsson

Wiinikka

et al. 2014

Aerosol Science and Technology

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Entrained flow gasification is a promising technique where biomass is converted to a synthesis gas (syngas) under fuel-rich conditions. In contrast to combustion, where the fuel is converted to heat, CO 2 , and H 2 O, the syngas from gasification is rich in energetic gases such as CO and H 2 . These compounds (CO and H 2 ) represent the building blocks for further catalytic synthesis to chemicals or biofuels. Impurities in the syngas, such as particulates, need to be reduced to different levels depending on the syngas application. The objective of this work was to evaluate the amount of particulates; the particle size distribution and the particle composition from entrained flow gasification of pine stem wood at different operating conditions of the gasifier. For this purpose, online time resolved measurements were performed with a soot particle aerosol mass spectrometer (SP-AMS) and a scanning mobility particle sizer (SMPS). The main advantage of SP-AMS compared to other techniques is that the particle composition (soot, PAH, organics, and ash forming elements) can be obtained with high time resolution and thus studied as a direct effect of the gasifier-operating conditions. The results suggest that syngas particulates were essentially composed of soot at these tested process temperatures in the reactor (1200-1400 C). Furthermore, the AMS analysis showed a clear correlation between the amounts of polycyclic aromatic hydrocarbons (PAH) and soot in the raw syngas. Minimization of soot and PAH yields from entrained flow gasification of wood proved to be possible by further increasing the O 2 addition.

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“…One attractive characteristic of coal gasification technology is the possibility of coproduction of electricity, hydrogen, liquid fuels and high-value chemicals that contributes to the improvement of power generation efficiency compared with conventional pulverised coal fired plants as well as the reduction of emissions of greenhouse gases and particulates to the atmosphere (Minchener, 2005). Gasification has also the additional advantage of accommodating a wide range of feed stocks, including low-cost fuels like petroleum coke, biomass, and municipal wastes (Higman & Van der Burgt, 2003).…”

Section: Introductionmentioning

confidence: 99%