Flow Gasifier Research Articles

Study of solid hydrocarbon gasification in spherical bedding under high-temperature gas flow

The paper presents a mathematical model and calculation results for the process of gasification of solid hydro-carbons (SHC) placed in form of spherical bedding inside channels with variable cross section and washed with high-temperature gas. Parametric study was performed for analysis of generator performance (mass flow rate and gasifica-tion products) as function of different parameters: temperature and composition of gas phase, thermophysical proper-ties of SHC, sphere diameter in the bedding, and channels configuration. The method for estimating the SHC gasifica-tion process in a flow duct of low temperature gas generator (LTGG) without loss of spheres shape (due to melting) was developed. The method offers recommendations for obtaining the required level of mass flow rate and gas temper-ature at the generator exit. These data can be used for analysis of experimental results on SHC sublimation at the stage of preliminary designing of the LTGG.

噴流床炉を用いたバイオマスガス化- 液体燃料(BTL) 合成に関する研究-日本の現状と将来展望-

噴流床炉を用いたバイオマスガス化- 液体燃料(BTL) 合成に関する研究-日本の現状と将来展望-

Corrigendum to “Low temperature entrained flow pyrolysis and gasification of a Victorian brown coal” [Fuel 154 (2015) 107–113

Corrigendum to “Low temperature entrained flow pyrolysis and gasification of a Victorian brown coal” [Fuel 154 (2015) 107–113

High Temperature Gasification Behavior of Sludge in the Entrained Down Flow Gasifier

High Temperature Gasification Behavior of Sludge in the Entrained Down Flow Gasifier

Complex technical and economic studies of combined-cycle units with flow gasifiers

The method for determining the technical and economical indices of combined-cycle power plants (CCPPs) operating on coal with a low-charged steam generator and with a flow gasifier in combined production of electricity and heat, synthesis gas and hydrogen is considered. The results of analysis are presented and it is shown that such CCPPs have a higher technical and economical efficiency as compared to cogeneration plants (CPs) operating on pulverized coal and reconstructed with a gas-turbine topping. The material of this article is prepared in the framework of the Federal Targeted Program “Scientific and Scientific-Pedagogical Specialists of Innovative Russia for 2009–2013,” application 1.2.2, the program “Research Works on Production of Fuels and Power from Organic Raw Materials.”

Flow gasifier having cooling shield and bellows expansion joint

Flow gasifier having cooling shield and bellows expansion joint

Flow gasifier having cooling shield and sliding seal

Flow gasifier having cooling shield and sliding seal

Characteristics of Gasification Residue in a High Temperature Gasification Process of Woody Biomass

High temperature gasification experiment of woody biomass was carried out in an entrained down flow gasifier. In this experiment, characteristics of gasification residue in a high temperature gasification process were clarified. The highest temperature of gasifier was over 1273 K. Gasification experiment was conducted at different feed stock feeding rates, and gasification residue was collected during the gasification experiment at various dust collection points. Collection point of gasification residue was the gasifier exit, gasifier bottom, cyclone and bag filter of the gasification unit. Characterization of residue was conducted by chemical composition, particle diameter and particle shape. Temperature distribution in the gasifier and produced gas composition was monitored during the gasification experiment. Chemical composition of collected gasification residue was different at different dust collection points. Ash content was the highest in the gasifier bottom residue, and fixed carbon content was the highest in the bag filter residue. Particle diameter and observed particle shape was also different at different dust collection points. Gasification temperature increased with increasing the feeding ratio, chemical composition and particle diameter of residue was changed drastically. Ash ratio increased in the gasifier bottom, and fixed carbon ratio increased in the bag filter. But the differences in particle shapes collected at the same dust collection point were not significant. Calculated carbon conversion values didn't show the big difference in different experimental conditions, but gasification behavior in the gasifier was different, and soot generation increased with increasing the gasification temperature.