Task 4, Mild gasification technology development system integration studies, April 1989--September 1990

Technical Report · Sat Dec 01 04:00:00 EST 1990

OSTI ID:6094628

Knight, R A; Gissy, J; Onischak, M; Carty, R; Babu, S P; Wootten, J M; Duthie, R G

The IGT mild gasification process incorporates an integrated fluidized-bed/entrained-bed reactor with heat supplied by a combination of hot char and gas recycle. The use of mild operating conditions (1000 to 1500{degree}F), low pressures (<50 psig), and continuous operation in closed reactors, combined with the potential value-added benefits from the sale of co-products, offer an economical and environmentally sound approach to advanced coal utilization. The tests conducted as Task 4 operated with a full-stream product gas condensate system that was added to the process research unit (PRU). In these tests, the use of recycled char from previous tests mixed with the caking coal feed to the fluidized bed simulated the scale-up process design for the adiabatic process development unit (PDU) using recycled hot char. Also, one test was performed to evaluate the effect of carbon dioxide in the inlet fluidization gas, as would be present in the PDU design using heated recycled product gas for fluidization. Co-product yields and quality were compared with Task 2 data and related to sequential char recycle, fluidization gas, and coal type. Oils/tars yields with Illinois and West Virginia bituminous coals were consistently over 25% by weight of moisture- and ash-free coal, and were not adversely affected either by replacement of coke diluent with mild gasification char or by the use of 19% CO{sub 2} in the fluidization gas. Condensable co-products from the Task 4 PRU tests were evaluated by Reilly Industries for the production of chemicals and pitch binders, and recommendations for liquids upgrading for incorporation into the 24-ton/h PDU design were made. Larger batches of char were generated for preparation of form coke and smokeless fuel briquettes to be tested. 3 refs., 4 figs., 31 tabs.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• Sponsoring Organization: DOE; USDOE, Washington, DC (USA)
• DOE Contract Number: AC21-87MC24266
• OSTI ID: 6094628
• Report Number(s): DOE/MC/24266-2966; ON: DE91002052
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
&amp; Peat-- Purification &amp; Upgrading
010404* -- Coal
Lignite
&amp; Peat-- Gasification
ALKYLATED AROMATICS
AROMATICS
ASH CONTENT
BENZENE
BINDERS
BITUMINOUS COAL
BLACK COAL
BOILING POINTS
BRIQUETS
BY-PRODUCTS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHARS
CHEMICAL FEEDSTOCKS
CHEMICAL PROPERTIES
CHEMICAL REACTION YIELD
CHROMATOGRAPHY
COAL
COAL GAS
COAL GASIFICATION
COAL LIQUIDS
COAL TAR
COAL TAR OILS
COKE
CRESOLS
DESIGN
DISTILLATES
DISTILLATION
ENERGY
ENERGY SOURCES
ENTRAINMENT
FEDERAL REGION III
FEDERAL REGION V
FLUIDIZATION
FLUIDIZED BEDS
FLUIDS
FOSSIL FUELS
FUELS
GAS CHROMATOGRAPHY
GAS GENERATORS
GASES
GASIFICATION
HEAT
HYDROCARBONS
HYDROXY COMPOUNDS
ILLINOIS
LIQUIDS
MATERIAL BALANCE
MATERIALS
MATTER
MOISTURE
NORTH AMERICA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PERFORMANCE TESTING
PHENOL
PHENOLS
PHYSICAL PROPERTIES
PITCHES
PROCESS HEAT
PROCESSING
PYROLYSIS PRODUCTS
RECYCLING
REFINING
RESIDUES
SEPARATION PROCESSES
SIZE
SOLID FUELS
STRUCTURAL CHEMICAL ANALYSIS
SULFUR CONTENT
TAR
TECHNOLOGY ASSESSMENT
TESTING
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TOLUENE
TRANSITION TEMPERATURE
USA
VOLATILE MATTER
WEST VIRGINIA
XYLENES
YIELDS