Pitch residues from upgrading of bitumen and heavy oils as additives in cokemaking: influence of pitch properties

Conference · Mon Jan 01 00:00:00 EST 1979 · Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States)

OSTI ID:5204662

Belinko, K; Ciavaglia, L A; Nandi, B N; Denis, J M

Impending shortages of good coking coals throughout the world have prompted a series of investigations at CANMET (Canada Centre for Mineral and Energy Technology) into the utilization of western Canadian marginal coking coals in the production of metallurgical grade coke. One possible way to do this is to add residual pitch from thermal hydrocracking of bitumen and heavy oils to such coals. This pitch has been found to be an excellent additive for up-grading low fluid, low volatile, inert-maceral rich coals. The pitch acts as a fluidity-enhancing agent, and by interacting with the vitrinite of the coal, augments the supply of reactive carbon necessary for bonding together of inert macerals. The purpose of this work is to add further insight into the role of pitch in carbonization of coal/pitch blends. Pitches derived from thermal hydrocracking of bitumen at different degrees of severities were utilized to provide a means of assessing the properties of the pitches in the carbonization process without changing the basic chemical nature of the parent material. Pitch concentration in the coal/pitch blend dictates both the amount of binding material made available to the coal and the fluidity of the blend. Both of these parameters depend on the physico-chemical properties of the pitch and on the extent of interaction between the pitch and the coal. In order to produce good quality coke from a coal/pitch blend, the blend must possess sufficient fluidity to ensure a uniform and continuous distribution of binding material throughout the coal. Optimum coke strength is achieved when pitch is added in sufficient amount to generate a controlled fluidity with enough binding material to agglomerate the coke.

• Research Organization: Dept. of Energy, Mines and Resources, Ottawa, Ontario
• OSTI ID: 5204662
• Report Number(s): CONF-800303-P3
• Journal Information: Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States), Vol. 25:2; Conference: 179. national meeting of the American Chemical Society, Houston, TX, USA, 23 Mar 1980
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
BITUMENS
HYDROCRACKING
COAL
BINDERS
COKING
COKE
MECHANICAL PROPERTIES
PETROLEUM
ADDITIVES
EXPERIMENTAL DATA
GRAPHS
PITCHES
RESIDUES
TABLES
VISCOSITY
CARBONACEOUS MATERIALS
CARBONIZATION
CHEMICAL REACTIONS
CRACKING
DATA
DATA FORMS
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PYROLYSIS
TAR
THERMOCHEMICAL PROCESSES
010401* - Coal & Coal Products- Carbonization- (-1987)