The gasification processes of coal, coal-water slurry, and natural bitumen were studied. A new method involving application of hydrocarbon fuels was proposed. It allows one to create process schemes which can be adopted for changing feedstock's properties in a wide range by the variation of gasification parameters. The integrated gasification unit allows using the local resources and not being dependent on external fuel deliveries. However, for designing such projects, it is necessary to study the physicochemical processes involved in the thermochemical processing of various fuel types. For calculation of gas composition, three fuel types were selected: Kamsky long-flame coal, coal-water slurry based at Kama coal dust, and natural bitumen from Ashalchy oil field. During thermochemical processing of various feedstock types, by varying gasification parameters, syngas with the required application ratio of CO/H 2 was obtained. These fuels have various compositions, but they are located at one region. The syngas thus produced may be used in the chemical and energy industries.
In this paper oxidative torrefaction of sunflower husk pellets in the kaolin layer was firstly investigated. Besides, influence of kaolin without use of special additives on limitation of the oxygen flow from environment into the sunflower husk was analyzed. Torrefaction temperature, torrefaction time, and height of kaolin layer over the range of 240-280 °C, 30-60 min, and 3-5 cm, respectively were varied. Analysis showed that increase of temperature led to more significant influence of layer height on mass yield. Energy yield gradually decreased with increasing torrefaction temperature and torrefaction time, and height of kaolin layer had the opposite effect on the energy yield. With the increase of torrefaction intensity, drier fuel with higher hydrophobicity was formed. Torrefaction resulted to biomass destruction, although the fiber structure was retained.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.