Valorization of selected biomass and wastes by co-pyrolysis with coal
- Inst. of Carboquimica (CSIC), Zaragoza (Spain)
Implementation of a more sensible energy-environmental policy should include a 'green alliance of biomass and coal to pursue eco-friendly technologies for co-utilizing biomass and other opportunity fuels with coal or natural gas'. This article discusses two parallel cases of copyolysis of coal with biomass or wastes. In the first case, smokeless fuel briquettes are prepared with a low-rank coal and biomass byproducts such as olive stones and sawdust. Additives to improve the mechanical properties and the sulfur retention in ash are used. The briquettes showed good mechanical properties and slow, uniform, smokeless combustion. In the second case, petroleum residua and waste lubrication oils are used to produce chemicals and energy by co-pyrolysis with coal. It has been shown that co-pyrolysis in the presence of coal char selectively promotes transfer of hydrogen from the parent material to the gas and liquid products, concentrating carbon in the remaining char. Split-off hydrogen from carbon is enhanced when the primary co-pyrolysis products are submitted to thermocatalytic decomposition in a subsequent catalytic step. This process represents an attractive route for the production of carbon dioxide free hydrogen from hydrocarbons, whatever their origin. 34 refs., 5 figs., 4 tabs.
- OSTI ID:
- 20490073
- Journal Information:
- International Journal of Power and Energy Systems, Vol. 24, Issue 3; Conference: International conference on co-utilization of domestic fuels, Gainesville, FL (United States), 5-6 Feb 2003; Other Information: rmoliner@carbon.icb.csic.es; ISSN 1078-3466
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of Microwave and Thermal Co-pyrolysis of Low-Rank Coal and Pine Wood on Product Distributions and Char Structure
Valorizing the carbon byproduct of methane pyrolysis in batteries
Related Subjects
09 BIOMASS FUELS
02 PETROLEUM
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
COPROCESSING
COAL
PYROLYSIS
BIOMASS
CHARS
RESIDUES
LUBRICATING OILS
WASTE OILS
CATALYSIS
HYDROGEN TRANSFER
PYROLYSIS PRODUCTS
SEMICOKE
HYDROGEN
MASS BALANCE
YIELDS
DECOMPOSITION
WASTE PRODUCT UTILIZATION
PARAMETRIC ANALYSIS
OLIVES
AGRICULTURAL WASTES
WOOD WASTES