نتایج جستجو برای: downdraft gasifier

تعداد نتایج: 1088  

2013
Aboma Emiru Aga Torsten Fransson Peter Hagström

Sudden change on earth’s climate, which is a result of an increase in CO2 in the atmosphere, is mainly caused by burning of fossil fuels for various energy services. However, for the energy services to be favourable to the environment, there should be a balance with the environmental protection, and we can call that “Sustainable Innovative Development”. “EXPLORE Polygeneration” initiative will ...

Journal: :Bioresource technology 2009
Ningbo Gao Aimin Li Cui Quan

In this work, an experimental study of biomass gasification in different operation conditions has been carried out in an updraft gasifier combined with a porous ceramic reformer. The effects of gasifier temperature, steam to biomass ratio (S/B), and reforming temperature on the gas characteristic parameters were investigated with and without porous ceramic filled in reformer. The results indica...

Journal: :Applied sciences 2022

Downdraft gasification is a promising process of energy conversion wood biomass. There are such fuel conditions that differ favorably from conventional conditions. In conditions, there no pyrolysis zone in the bed, which precedes oxidation zone. Fuel supplied into oxidizing without charring, where it reacts with intensive cold air flow tuyeres. The study aims to replicate particles gasifier clo...

2009
Anjani Kumar DIDWANIA Robert J. CATTOLICA

The University of California in collaboration with West Biofuels, LCC, has developed an advanced thermochemical gasification system (5 ton/day) for the conversion of waste stream biomass for the production of bio-fuels and bio-energy. The “Pyrox” gasifier design is based on a dual-fluidized bed system operating at atmospheric pressure with air. Simulation of this gasifier was conducted with a n...

2013
Ping Wang Mehrdad Massoudi

In the entrained-flow gasifiers used in integrated gasification combined cycle (IGCC) plants, the majority of mineral matter transforms to liquid slag on the wall of the gasifier and flows out the bottom. However, a small fraction of the mineral matter is entrained (as fly ash) with the raw syngas out of the gasifier to downstream processing. This molten/sticky fly ash could cause fouling of th...

1999
P. Kollias B. A. Albrecht

A cloud mass flux representation of the vertical turbulent fluxes provides a physical framework for understanding the effects of shallow convection in maintaining the vertical structure of the boundary layer. This approach is based on the assumption that coherent updrafts and downdraft structures are responsible for most of the turbulent transport. Previous evaluations of mass flux parameteriza...

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