materials issues in black liquor gasification systems
CHEMREC Pressurized BLG (Black Liquor Gasification
No natural purging mechanism exists in the black liquor gasifier. Alternative methods for control of accumulation of non-process elements will be studied in this project. WP8. Material investigation in Hot Green liquor (Swedish Corrosion Institute) In pressurized black liquor gasification the green liquor temperature can be as high as 220ºC which
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CiteSeerX — Corrosion Issues in Black Liquor Gasifiers
CiteSeerXDocument Details (Isaac Councill Lee Giles Pradeep Teregowda) The kraft papermaking process which is by far the predominant method used in North America depends on recovery of the chemicals used in the digesting or pulping operation. Currently the black liquor recovery boiler is the heart of this recovery process but replacement of this boiler with a gasification system is
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Corrosion in the Pulp and Paper Industry
Kraft Liquor Corrosion Abstract This presentation will discuss corrosion of carbon steel austenitic and duplex stainless steel in white green and black liquor environments. Generally carbon steel has poor resistance in alkaline liquors. Where carbon steel remains
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Material Characterization and Analysis for Selection of
James R. Keiser James G. Hemrick Roberta A. Peascoe-Meisner Camden R. Hubbard and J. Peter Gorog "Studies and Selection of Containment Materials for High-Temperature Black Liquor Gasification
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CORROSION ISSUES IN BLACK LIQUOR GASIFIERS
materials requirements and issues that are described in this paper. In addition results from recent studies of the compatibility of gasifier components with the respective environments are presented. Keywords corrosion materials degradation gasification black liquor alkali salts hydrogen sulfide fluidized bed slagging gasifier
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THERMODYNAMIC ANALYSIS OF BLACK LIQUOR STEAM
dynamic data on black liquor gasification. However black liquor steam gasification the focus of the work presented here was not studied in their work. Another alternative to the conventional recovery furnace in the kraft pulping process is the black liquor steam gasification system with addition of TiO2 for direct causticization.
Chat OnlineTitle Refractory for Black Liquor Gasifiers
to black liquor under the harsh working conditions of Black liquor gasifiers. Consequently development of cost-effective materials with improved performance in gasifier environments to answer the material challenges presented by black liquor gasification (HTHP HTLP) is the objective of this project.
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Black Liquor Gasification netl.doe.gov
The Kraft process chemicals in black liquor and the high temperatures of gasification (around 950°C) exert tremendous strain on the gasifier itself especially the heat resistant refractories that line the reactor (a problem discussed elsewhere). Refractories can see
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Black liquor gasification RISE
The work package 3 was about integration with pulp mills ie the effect of black liquor gasification on the pulp mill and how the process can be integrated into the pulp mill. The sub-projects were about the consequences for the energy system for different types of pulp consumption energy combinations issues related to causticisation and
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Title Refractory for Black Liquor Gasifiers
to black liquor under the harsh working conditions of Black liquor gasifiers. Consequently development of cost-effective materials with improved performance in gasifier environments to answer the material challenges presented by black liquor gasification (HTHP HTLP) is the objective of this project.
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Thermodynamic analysis of black liquor steam gasification
By comparing with non-black liquor steam gasification in the literature (Schuster et al. 2001 Gao et al. 2008 Umeki et al. 2010) the trends of the gas (H 2 CO CO 2) equilibrium composition as a function of SBR at SBR > 0.3 are similar to those of non-black liquor steam gasification.
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System analysis of dry black liquor gasification based
Dec 01 2013 · Highlights Circulating fluidized bed system for black liquor gasification with direct causticization. Effects of gasifying medium i.e. oxygen or air on gasification are studied. Direct causticization eliminates energy intensive limekiln reducing biomass use. Results show 10 higher SNG production from O 2 blown system than air blown system. SNG production is higher in O 2 blown system
Chat OnlineSystem analysis of dry black liquor gasification based
Dec 01 2013 · Highlights Circulating fluidized bed system for black liquor gasification with direct causticization. Effects of gasifying medium i.e. oxygen or air on gasification are studied. Direct causticization eliminates energy intensive limekiln reducing biomass use. Results show 10 higher SNG production from O 2 blown system than air blown system. SNG production is higher in O 2 blown system
Chat OnlinePERFORMANCE OF MATERIALS IN BLACK LIQUOR
Low-Temperature Black Liquor Gasification The low-temperature black liquor steam reformer/gasifier presents a range of conditions for which materials have to be selected. The highest temperature region is the pulse-combustion chamber where temperatures are expected to reach °C. The carbon
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Black Liquor Gasification Combined Cycles Mill
Black Liquor Gasification Combined Cycles Mill Integration Issues Performance and Emissions Estimates Stefano Consonni § Eric D. Larson§ Ryan E. Katofsky‡ Politecnico di Milano § Princeton University ‡ Navigant Consulting Colloquium on Black Liquor Combustion and Gasification Salt Lake City May 13-16 2003
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Corrosion Issues In Black Liquor Gasifiers
Black liquor gasification offers some clear advantages compared to recovery boilers Black liquor gasification has some significant materials problems For gasification to be economically justifiable materials problems need to be resolved A laboratory test system has been developed that can reproduce the refractory degradation observed
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Black liquorWikipedia
In industrial chemistry black liquor is the by-product from the kraft process when digesting pulpwood into paper pulp removing lignin hemicelluloses and other extractives from the wood to free the cellulose fibers.. The equivalent material in the sulfite process is usually called brown liquor but the terms red liquor thick liquor and sulfite liquor are also used.
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New 3-step process for conversion of kraft lignin from
Jun 01 2016 · This makes black liquor the fifth most important fuel in the world next to coal oil natural gas and gasoline. Since black liquor is derived from wood it is the most important renewable bio-fuel particularly in Sweden and Finland. One pathway that has been explored to produce biochemicals and fuels from black liquor is gasification.
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THERMODYNAMIC ANALYSIS OF BLACK LIQUOR STEAM
dynamic data on black liquor gasification. However black liquor steam gasification the focus of the work presented here was not studied in their work. Another alternative to the conventional recovery furnace in the kraft pulping process is the black liquor steam gasification system with addition of TiO2 for direct causticization.
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Energy-efficient recovery of black liquor through
Jun 01 2018 · Compared to pyrolysis gasification is considered a well-established technology that can give better results in terms of the increases in material decomposition and chemical energy . Among the available types of biomass including wastes black liquor (BL) from the pulp mill industry is considered to have very high potential as an energy source.
Chat Online1PERFORMANCE OF MATERIALS IN BLACK LIQUOR GASIFICATION
Black liquor gasification systems have the potential to replace black liquor recovery boilers because of their increased energy efficiency reduced emission of pollutants and inherently safer designs. However there are significant problems that must be addressed not the least of which is the selection of suitable materials for containment of
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CHEMREC Pressurized BLG (Black Liquor Gasification
No natural purging mechanism exists in the black liquor gasifier. Alternative methods for control of accumulation of non-process elements will be studied in this project. WP8. Material investigation in Hot Green liquor (Swedish Corrosion Institute) In pressurized black liquor gasification the green liquor temperature can be as high as 220ºC which
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Material Characterization and Analysis for Selection of
James R. Keiser James G. Hemrick Roberta A. Peascoe-Meisner Camden R. Hubbard and J. Peter Gorog "Studies and Selection of Containment Materials for High-Temperature Black Liquor Gasification
Chat OnlineSystem analysis of dry black liquor gasification based
Dec 01 2013 · Highlights Circulating fluidized bed system for black liquor gasification with direct causticization. Effects of gasifying medium i.e. oxygen or air on gasification are studied. Direct causticization eliminates energy intensive limekiln reducing biomass use. Results show 10 higher SNG production from O 2 blown system than air blown system. SNG production is higher in O 2 blown system
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Black liquorWikipedia
In industrial chemistry black liquor is the by-product from the kraft process when digesting pulpwood into paper pulp removing lignin hemicelluloses and other extractives from the wood to free the cellulose fibers.. The equivalent material in the sulfite process is usually called brown liquor but the terms red liquor thick liquor and sulfite liquor are also used.
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Pyrolysis and steam gasification processes of black liquor
May 01 2002 · The black liquor is burned in a RB which is used to produce steam by combusting the organic material and to recover the organic salts. The heating value of black liquor (65–70 solids) is 14–16 MJ/kg compared to coal at 32 MJ/kg ().The combustion model divides the combustion into four stages drying devolatilization char burning and smelt oxidization.
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Black Liquor Gasificationan overview ScienceDirect Topics
Black liquor gasification (BLG) involves pyrolyzing concentrated black liquor into an inorganic phase and a gas phase through reactions with oxygen or air at high temperatures. BLG technology can be an alternative to using a recovery boiler to produce electricity chemicals or fuels such as dimethyl ether synthetic gas (syngas) methanol
Chat OnlineTitle Refractory for Black Liquor Gasifiers Reporting
(HPHT) black liquor gasifiers. This study will define the chemical thermal and physical conditions in current and proposed gasifier designs and then modify existing materials and develop new materials to successfully meet the formidable material challenges. Resolving the material challenges of black liquor gasification combined cycle technology
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(PDF) Corrosion Issues in Black Liquor Gasifiers
MATERIALS ISSUES IN HIGH TEMPERATURE BLACK LIQUOR GASIFIERS Examples of the narrow transgranular branched cracking found on the gasifier shell. Cracks revealed in
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article osti_788623 title = Comparison of Refractory Performance in Black Liquor Gasifiers and a Smelt Test System author = Peascoe RA abstractNote = Prior laboratory corrosion studies along with experience at the black liquor gasifier in New Bern North Carolina clearly demonstrate that serious material problems exist with the gasifier s refractory lining.
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