Clean Coke Process. Process development studies report for first quarter 1978
Approximately 1500 pounds of sized feed for the carbonization PDU was prepared from 1.5 tons of the Robena sample. This coal contains 1.6% sulfur and has a Free-Swelling Index of 8/sup 1///sub 2/, which is representative of Pittsburgh Seam coal. Two runs with this coal were attempted in the PDU during this period, but both were aborted by operating problems in the system. Corrective measures have been implemented and will be tested in future tests. Bench tests show promise for a milder preoxidation treatment to render Pittsburgh coal nonagglomerating in two-stage carbonization. Samples of neat tar (wash-oil-free) from first-stage carbonization of both West Kentucky and Pittsburgh Seam coals in the 3-inch bench unit were characterized by distillation and by analysis of the chemical-oil fractions; results are presented. An evaluation was conducted on coals and chars from both Illinois and Kentucky to determine why they behaved differently in the CLEAN COKE process. The samples were analyzed by petrographic, chemical, and physical test methods, and a number of minor differences were noted. However, the results are inconclusive with the present data. Airblowing and heat treating of hydrogenation heavy oil continues to show promise for improving its properties as a binder in form-coke. Tests were also conducted to determine the optimum concentration of treated binder in the green mix for producing strong form-coke. Binder concentrations in the range 25 to 30% produced coke test specimens having crushing strengths greater than 11,000 psi. Lower binder concentrations are desirable and are suited for briquetting operations, which may be the forming technique chosen for scale-up of the process. The vertical-shaft coking kiln was operated to complete final carbonization of pellets produced and cured previously. Both batches of test pellets gave weak coke products of low crushing strength.
- Research Organization:
- USS Engineers and Consultants, Inc., Pittsburgh, PA (USA)
- DOE Contract Number:
- EX-76-C-01-1220
- OSTI ID:
- 6650230
- Report Number(s):
- FE-1220-36
- Country of Publication:
- United States
- Language:
- English
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Clean coke process: process development studies. Monthly report, January 1978
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CLEAN COKE PROCESS
PROCESS DEVELOPMENT UNITS
COAL
AGGLOMERATION
CARBONIZATION
OXIDATION
PETROLOGY
COAL TAR
DISTILLATION
SOLVENT EXTRACTION
COAL TAR ACIDS
GAS CHROMATOGRAPHY
COAL TAR BASES
COAL TAR OILS
FORMED COKE PROCESSES
BINDERS
BRIQUETTING
CHEMICAL ANALYSIS
COKE
MECHANICAL PROPERTIES
BASES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHROMATOGRAPHY
DECOMPOSITION
ENERGY SOURCES
EXTRACTION
FABRICATION
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
GEOLOGY
MOLDING
OILS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
SEPARATION PROCESSES
TAR
010401* - Coal & Coal Products- Carbonization- (-1987)
010600 - Coal
Lignite
& Peat- Properties & Composition
400105 - Separation Procedures