Production of cooking briquettes from Maissade (Haiti) lignite. Feasibility study and preliminary plant design
A laboratory study was done to establish the technical feasibility of producing domestic cooking briquettes to be marketed in Haiti, from the Maissade lignite reserves of that country, which are high in both ash and sulfur and not yet mined. It was found that acceptable briquettes could be made from Maissade char, pyrolized and compacted with a molasses-lime binder and the addition of bagasse to improve strength and burning rate. Molasses, lime and bagasse are all produced in Haiti. Sodium nitrate was added to enhance ignition, and borax as a wetting and release agent. Standard, ''pillow-shaped'' briquettes were successfully produced on a standard, double roll briquetting machine. The recommended process sequence and equipment selection are virtually identical to that used to produce standard US barbecue briquettes from North Dakota lignite. The heating value of the Maissade briquettes is lower due to their high ash level, which may be acceptable if they can be produced at a cost per heating value comparable to wood charcoal, currently used in Haiti. The high sulfur content, mostly in organic form, presents no problem, since it is tied up after combustion as CaSO/sub 4/ by the unusually high calcium content of this lignite. Detailed analyses of Maissade lignite and its mineral components are included, as well as a preliminary plant design and capital cost estimate, for capacities of 10,000 and 50,000 metric tons per year, and for a smaller pilot plant.
- Research Organization:
- North Dakota Univ., Grand Forks (USA). Energy Research Center
- DOE Contract Number:
- FC21-83FE60181
- OSTI ID:
- 5932389
- Report Number(s):
- DOE/FE/60181-198; ON: DE86008701
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ASHES
X-RAY DIFFRACTION
X-RAY FLUORESCENCE ANALYSIS
BRIQUETTING
EQUIPMENT
FEASIBILITY STUDIES
FLOWSHEETS
MANUFACTURERS
LIGNITE
CHEMICAL COMPOSITION
ASH CONTENT
BAGASSE
BINDERS
CALCIUM HYDROXIDES
CALORIFIC VALUE
CHARS
COAL DEPOSITS
ECONOMICS
EXPERIMENTAL DATA
FOOD PROCESSING
FUELS
HAITI
MOLASSES
PYROLYSIS
SULFUR CONTENT
THERMAL GRAVIMETRIC ANALYSIS
AGRICULTURAL WASTES
ALKALINE EARTH METAL COMPOUNDS
BROWN COAL
CALCIUM COMPOUNDS
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COAL
COHERENT SCATTERING
COMBUSTION PROPERTIES
DATA
DECOMPOSITION
DIAGRAMS
DIFFRACTION
ENERGY SOURCES
FABRICATION
FOSSIL FUELS
GEOLOGIC DEPOSITS
GRAVIMETRIC ANALYSIS
GREATER ANTILLES
HISPANIOLA
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
ISLANDS
MATERIALS
MINERAL RESOURCES
MOLDING
NONDESTRUCTIVE ANALYSIS
NUMERICAL DATA
ORGANIC WASTES
OXYGEN COMPOUNDS
PROCESSING
PYROLYSIS PRODUCTS
QUANTITATIVE CHEMICAL ANALYSIS
RESIDUES
RESOURCES
SCATTERING
THERMAL ANALYSIS
THERMOCHEMICAL PROCESSES
WASTES
WEST INDIES
X-RAY EMISSION ANALYSIS
010401* - Coal & Coal Products- Carbonization- (-1987)