Investigating the potential for a self-sustaining slow pyrolysis system under varying operating conditions. 2014

Kyle Crombie, and Ondřej Mašek
UK Biochar Research Centre, School of GeoSciences, University of Edinburgh, Crew Building, King's Buildings, Edinburgh EH9 3JN, UK. Electronic address: kncrombie@gmail.com.

This work aimed to investigate the impact of highest treatment temperature (HTT), heating rate, carrier gas flow rate and feedstock on the composition and energy content of pyrolysis gas to assess whether a self-sustained system could be achieved through the combustion of the gas fraction alone, leaving other co-products available for alternative high-value uses. Calculations based on gas composition showed that the pyrolysis process could be sustained by the energy contained within the pyrolysis gases alone. The lower energy limit (6% biomass higher heating value (HHV)) was surpassed by pyrolysis at ⩾450°C while only a HTT of 650°C consistently met the upper energy limit (15% biomass HHV). These findings fill an important gap in literature related to the energy balance of the pyrolysis systems for biochar production, and show that, at least from an energy balance perspective; self-sustained slow pyrolysis for co-production of biochar and liquid products is feasible.

UI MeSH Term Description Entries
D005740 Gases The vapor state of matter; nonelastic fluids in which the molecules are in free movement and their mean positions far apart. Gases tend to expand indefinitely, to diffuse and mix readily with other gases, to have definite relations of volume, temperature, and pressure, and to condense or liquefy at low temperatures or under sufficient pressure. (Grant & Hackh's Chemical Dictionary, 5th ed)
D006358 Hot Temperature Presence of warmth or heat or a temperature notably higher than an accustomed norm. Heat,Hot Temperatures,Temperature, Hot,Temperatures, Hot
D001709 Biotechnology Body of knowledge related to the use of organisms, cells or cell-derived constituents for the purpose of developing products which are technically, scientifically and clinically useful. Alteration of biologic function at the molecular level (i.e., GENETIC ENGINEERING) is a central focus; laboratory methods used include TRANSFECTION and CLONING technologies, sequence and structure analysis algorithms, computer databases, and gene and protein structure function analysis and prediction. Biotechnologies
D014866 Waste Products Debris resulting from a process that is of no further use to the system producing it. The concept includes materials discharged from or stored in a system in inert form as a by-product of vital activities. (From Webster's New Collegiate Dictionary, 1981) Product, Waste,Products, Waste,Waste Product
D014908 Triticum A plant genus of the family POACEAE that is the source of EDIBLE GRAIN. A hybrid with rye (SECALE CEREALE) is called TRITICALE. The seed is ground into FLOUR and used to make BREAD, and is the source of WHEAT GERM AGGLUTININS. Wheat,Durum Wheat,Triticum aestivum,Triticum durum,Triticum spelta,Triticum turgidum,Triticum turgidum subsp. durum,Triticum vulgare,Durum Wheats,Wheat, Durum
D061249 Batch Cell Culture Techniques Methods for cultivation of cells, usually on a large-scale, in a closed system for the purpose of producing cells or cellular products to harvest. Batch Culture Techniques,Batch Culture,Continuous Batch Culture,Fed Batch Culture Techniques,Fed-Batch Culture,Fed-Batch Culture Techniques,Shake-Flask Culture,Batch Culture Technique,Batch Culture, Continuous,Batch Cultures,Batch Cultures, Continuous,Continuous Batch Cultures,Culture Technique, Batch,Culture Technique, Fed-Batch,Culture Techniques, Batch,Culture Techniques, Fed-Batch,Culture, Batch,Culture, Continuous Batch,Culture, Fed-Batch,Culture, Shake-Flask,Cultures, Batch,Cultures, Continuous Batch,Cultures, Fed-Batch,Cultures, Shake-Flask,Fed Batch Culture,Fed-Batch Culture Technique,Fed-Batch Cultures,Shake Flask Culture,Shake-Flask Cultures,Technique, Batch Culture,Technique, Fed-Batch Culture,Techniques, Batch Culture,Techniques, Fed-Batch Culture
D028222 Picea A plant genus in the family PINACEAE, order Pinales, class Pinopsida, division Coniferophyta. They are evergreen, pyramidal trees with whorled branches and thin, scaly bark. Each of the linear, spirally arranged leaves are joined near the stem on a separate woody base. Spruce Tree,Piceas,Spruce Trees,Tree, Spruce,Trees, Spruce
D028223 Pinus A plant genus in the family PINACEAE, order Pinales, class Pinopsida, division Coniferophyta. They are evergreen trees mainly in temperate climates. Pine Tree,Maritime Pine,Pinus abies,Pinus maritima,Pinus pinaster,Pinus radiata,Pinus tremula,Maritime Pines,Pine Trees,Pine, Maritime,Pines, Maritime,Tree, Pine,Trees, Pine
D029741 Brassica rapa A subspecies of Brassica that includes rape mustard. It is cultivated for the seed and used as animal feed. Field Mustard,Wild Rutabaga,Wild Turnip,Field Mustards,Mustard, Field,Mustards, Field,Rutabaga, Wild,Rutabagas, Wild,Turnip, Wild,Turnips, Wild,Wild Rutabagas,Wild Turnips

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