Athabasca petroleum coke utilization: Coagglomeration with sulfur sorbents for control of sulfur dioxide emissions during combustion

Journal Article · · Energy and Fuels; (USA)

DOI:https://doi.org/10.1021/ef00025a003· OSTI ID:5856434

Otaigbe, J U; Egiebor, N O ^[1]

---

1. Univ. of Alberta, Edmonton (Canada)

The high sulfur content (6-9 wt%) of Athabasca petroleum coke, produced as a byproduct in the fluid and delayed coking of Athabasca oil sands bitumen, precludes their possible utilization as a fuel. The effect of coagglomerating the coke with small amounts of conventional sulfur sorbents (Ca(OH){sub 2} and NaHCO{sub 3}), using bitumen as binder, on the sulfur dioxide emission of the coke samples during combustion was investigated. Up to 90% sulfur capture was observed for Syncrude coke and 80% for Suncor coke coagglomerated with Ca(OH){sub 2} at a Ca/S mole ratio of about 2.0 and burnt at 800{degree}C. At equivalent metal/sulfur (M/S) mole ratio, the coke samples coagglomerated with NaHCO{sub 3} were observed to have lower sulfur dioxide emission (i.e., higher percentage of sulfur capture) than the coke/Ca(OH){sub 2} agglomerates during combustion at 800{degree}C. For both sorbent types, the sulfur capture efficiency increased with a decrease in the combustion temperature. The ash content and calorific values of the agglomerates were determined with a view to obtaining the optimum M/S ratio of the agglomerates.

• OSTI ID: 5856434
• Journal Information: Energy and Fuels; (USA), Journal Name: Energy and Fuels; (USA) Vol. 5:1; ISSN 0887-0624; ISSN ENFUE
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040600 -- Oil Shales & Tar Sands-- Products & By-Products
040900 -- Oil Shales & Tar Sands-- Waste management
044000* -- Oil Shales & Tar Sands-- Combustion-- (1990-)
ADSORBENTS
AGGLOMERATION
AIR POLLUTION ABATEMENT
ALBERTA
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ASH CONTENT
ATHABASCA DEPOSIT
BINDERS
BITUMENS
BITUMINOUS MATERIALS
BY-PRODUCTS
CALCIUM COMPOUNDS
CALCIUM HYDROXIDES
CALORIFIC VALUE
CANADA
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CARBONATES
CARBONIZATION
CHALCOGENIDES
CHEMICAL REACTIONS
COCOMBUSTION
COKE
COKING
COMBUSTION
COMBUSTION PROPERTIES
DECOMPOSITION
DESULFURIZATION
EFFICIENCY
ENERGY SOURCES
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
HYDROGEN COMPOUNDS
HYDROXIDES
INDUSTRIAL PLANTS
MATERIALS
NORTH AMERICA
OIL SAND DEPOSITS
OIL SAND PROCESSING PLANTS
OIL SANDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
PRODUCTION
SODIUM CARBONATES
SODIUM COMPOUNDS
SULFUR COMPOUNDS
SULFUR CONTENT
SULFUR DIOXIDE
SULFUR OXIDES
SYNTHETIC FUELS
SYNTHETIC PETROLEUM
TAR
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES