Thermal Degradation Kinetics of Distillers Grains and Solubles in Nitrogen and Air

Abstract

The pyrolysis and oxidation kinetics of distillers grains and solubles were determined using thermogravimetric analysis. The starting temperature of pyrolysis and oxidation of distillers grains and solubles increased with the increase of heating rate and initial moisture content. The pyrolysis and oxidation of distillers grains and solubles were completed at 650°C and 850°C, respectively, which were independent of the heating rate and the initial moisture content. The residual weights of distillers grains and solubles after pyrolysis and oxidation were 27.15% and 5.49% of the original dry mass of distillers grains and solubles. Thermogravimetrical analysis data was used to determine kinetic parameters of the thermal degradation of distillers grains and solubles. Predicted dynamic residual weights of distillers grains and solubles during thermal degradation agreed well with experimental data.

Pyrolysis mechanism and pyrolysis kinetics of yellow wine lees

“…As a result, phenomena such as the broadening of the DTG peak shape and the elevation of the pyrolysis temperature associated with the maximal weight loss peak were observed. Moreover, the weight loss rate at a given temperature point and the maximum rate of weight loss through pyrolysis increased in response to an increase in the heating rate; this finding is in agreement with the pyrolysis results of lees reported by Wang 56 et al , this is because the increased heat conduction between the sample and the reactor, which is induced by the accelerated heating rate, causes the interior of the lees to reach the maximum pyrolysis temperature more quickly when the pyrolysis process begins; volatile components precipitate rapidly, which in turn increases the rate at which weight is lost. 57,58…”

DDGS chars gasification with CO2: a kinetic study using TG analysis

“…Therefore, the potential of DDGS for gasification to produce gaseous fuel has been investigated by Kumar et al [1], Tavasoli et al [9], and Meng et al [10]. Liu et al [11] studied the pyrolysis and oxidation kinetics of distiller's grains and solubles (DGS) using thermogravimetric analysis (TGA). They reported that DGS residue had similar drying characteristics in both N 2 and air.…”

Optimization and economic evaluation of industrial gas production and combined heat and power generation from gasification of corn stover and distillers grains

“…The properties of corn stover and DDGS were described in Kumar et al (2008) and Wang et al (2009), respectively. The moisture contents of the corn stover and distillers grains were 6.2% and 12.16%, respectively, on a wet basis.…”