Biomass pyrolysis with an entrained flow reactor

Bohn, M.; Benham, Charles

doi:10.1021/i200025a030

Cited by 19 publications

(11 citation statements)

References 3 publications

(3 reference statements)

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“…. 13 methoxyl peak at 58 ppm in the NMR spectra of the catalytic products (seeTable 2)' These results were 0°11? "de C'…”

mentioning

confidence: 85%

“…Conventional rapid pyrolysis (RP) of biomass is a thermal treatment process in the absence of air, which produces char, liquid, and gaseous products [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. In these processes, the pyrolysis temperatures range from 450°C.-600O C. and vapor residence times are less than one second to five seconds.…”

Section: Background Of the Inventionmentioning

confidence: 99%

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Production of Stable Biomass Pyrolysis Oils Using Fractional Catalytic Pyrolysis

et al. 2010

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(51) Int. Cl' Methods for fractional catalytic pyrolysis which allow for C013 3/36 (200601) conversion ofbiomass into a slate ofdesired products without C013 60" (200601) the need for post-pyrolysis separation are described. The C101 1/207 (200601) methods involve use of a fluid catalytic bed which is main-C1013/00 (200601) tained at a suitable pyrolysis temperature. Biomass is added (52) us C1' to the catalytic bed, preferably while entrained in a non-USPC """""""" 48/197 R; 48/2013 48/2093 48/2103 reactive gas such as nitrogen, causing the biomass to become _ _ _ 423/644 pyrolyzed and forming the desired products in vapor and gas (58) Fleld 0f Class1ficatlon Search forms, allowing the desired products to be easily separated.

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“…. 13 methoxyl peak at 58 ppm in the NMR spectra of the catalytic products (seeTable 2)' These results were 0°11? "de C'…”

mentioning

confidence: 85%

Section: Background Of the Inventionmentioning

confidence: 99%

Production of Stable Biomass Pyrolysis Oils Using Fractional Catalytic Pyrolysis

et al. 2010

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“…Conventional rapid pyrolysis (RP) of biomass is a thermal treatment process in the absence of air, which produces char, liquid, and gaseous products. – In these processes, the pyrolysis temperatures range from 450 to 600 °C and vapor residence times are less than 1−5 s. In the RP process, liquid production is maximized at the expense of gaseous and solid products. The liquid product (bio-oil or biocrude) is generally unstable, acidic, corrosive, viscous, and has high moisture content. – The poor stability of biocrude oils is attributed to the char and alkali metals in the oil, which catalyze secondary reactions during storage .…”

Section: Introductionmentioning

confidence: 99%

Fractional Catalytic Pyrolysis of Hybrid Poplar Wood

Agblevor

Beis

Mante

et al. 2010

Ind. Eng. Chem. Res.

133

115

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Fractional catalytic pyrolysis is a selective in situ conversion of biopolymers into desired products. Fractional catalytic pyrolysis was used to convert the lignin fraction of hybrid poplar wood into high yields of cresols and phenols while the carbohydrate fraction was selectively converted into gaseous products. Ground air-dried biomass was fractionally pyrolyzed at 450−500 °C in a 2-in fluidized bed reactor. The total liquid, gas, and char/coke yields were 33%, 53%, and 12.5%, respectively. The low viscosity liquid products consisted of almost pure phenolics with minor carbohydrate decomposition products. The major liquid components were phenol, cresols, methyl substituted phenols, and small fractions of indene and substituted naphthalenes. The carbon and oxygen contents and high heating value (HHV) of the oil were 71%, 21%, and 30.5 MJ/kg, respectively. About 90 wt % of the gaseous products was carbon monoxide and carbon dioxide, and the rest was a mixture of hydrocarbons.

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“…These products are used to recover energy and certain chemicals [7]. The other two types of pyrolysis lead to a greater quantities of gases, especially when temperature and residence time are very high [13][14][15]. The…”

Section: Introductionmentioning

confidence: 99%

“…In consequence, as a first approximation, it is necessary to carry out kinetic studies of the pyrolysis of biomass waste, in laboratory reactors under control of the chemical reaction. These data, together with an additional experimentation at pilot scale, can be used for the design of industrial reactors [14]. Three products are generated during the pyrolysis processes: liquid, char and gas.…”

Section: Introductionmentioning

confidence: 99%