Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 12 of 12 for “"steam gasification"”.
-
Steam gasification of manureby S. Ganesan
Call number: LD2668 .T4 1979 G36
-
Mathematical Modeling of Ultra-Superheated Steam Gasification
Pure steam gasification has been of interest in hydrogen production, but with the challenge of supplying heat for endothermic reactions. Traditional solutions included either combusting feedstocks at the price of decreasing carbon conversion ratio, or using costly heating apparatus. Therefore, a …
-
Fundamental Kinetic Studies of CO2 and Steam Gasification
Gasification is the thermochemical conversion of a carbon-based fuel into a combustible product gas (syngas) using a gasifying agent, such as steam, carbon dioxide (CO2) or a combination of both. The application of this technology is limited, due to its slow reaction rate, making kinetics …
-
Sorption-Enhanced Hydrogen Production from Catalytic Steam Gasification of Coal
… respectively. Experiments were performed on the steam gasification of two different types of coal with these pellets in a fixed-bed reactor. Boundary Dam lignite coal (low-rank coal) demonstrated a higher reactivity than the Genesee subbituminous coal (medium rank). A maximum hydrogen fraction of …
-
Investigation of high-temperature and high-pressure steam gasification kinetics of a coal-derived char surrogate
Gasification is technology that has seen increasing international interest through its ability to convert solid, carbonaceous feedstocks (i.e., coal or biomass) into energy, fuels, and chemicals. Additionally, gasification is considered a ``clean'' technology as harmful emissions and greenhouse …
-
Modeling of solid oxide fuel cell performance with coal gasification
… stationary power systems that integrate coal gasification with solid oxide fuel cells (SOFCs) have been championed by the Department of Energy for the past couple of decades. However, many fundamental questions about this system still need to be addressed by modeling the complex coupling …
-
Chemistry models for major gas species estimation and tar prediction in fluidized bed biomass gasification
… deals with the process of fluidized bed biomass gasification (FBBG), which is the thermochemical conversion of solid biomass into combustible synthetic gas using a fluidized bed. Fluidized bed gasifiers encounter high tar concentrations at the gasifier outlet necessitating expensive downstream …
-
Mu-synthesis controller design for temperature control of a solar steam gasifier with uncertainty modeling and robust analysis
… a unique hybrid allothermal/autothermal solar steam gasification process was utilized to produce synthesis gas by inputting lignite, water, and solar irradiation. Oxygen is also fed into the reactor to burn off a portion of the lignite if the solar irradiation is not sufficient to fuel the …
-
Biomass gasification in small scale plants: experimental and modelling analysis
… fuel cells. The products originating from the gasification process mainly comprise a mixture of the permanent gases CO, CO2, H2 and CH4, steam, char, tars and ash. The raw synthesis gas needs to be cleaned from tars before it may be upgraded to other commodities. In most cases if tars deposit …
-
Hydrothermal gasification of human feces as an alternative means of waste mitigation and hydrogen production
Non-catalytic and catalytic gasification have been recently studied as a means of converting waste biomass into value-added gaseous products while concomitantly minimizing the emission of harmful pollutants. With the incorporation of a homogeneous or heterogeneous catalyst, gas products with a …
-
Utilization of Char from Biomass Gasification in Catalytic Applications
… One way to recover energy from biomass is via gasification, which enables the production of electricity, heat, chemicals, or fuels such as synthetic natural gas or gasoline. The desired product from gasification is synthesis gas, which is a mixture of CO and H2; however by-products such as tar …