Pulsed combustion process for black liquor gasification

Technical Report · Fri Feb 01 04:00:00 EST 1991

DOI:https://doi.org/10.2172/5852319· OSTI ID:5852319

Durai-Swamy, K; Mansour, M N; Warren, D W

The objective of this project is to test an energy efficient, innovative black liquor recovery system on an industrial scale. In the MTCI recovery process, black liquor is sprayed directly onto a bed of sodium carbonate solids which is fluidized by steam. Direct contact of the black liquor with hot bed solids promotes high rates of heating and pyrolysis. Residual carbon, which forms as a deposit on the particle surface, is then gasified by reaction with steam. Heat is supplied from pulse combustor resonance tubes which are immersed within the fluid bed. A portion of the gasifier product gas is returned to the pulse combustors to provide the energy requirements of the reactor. Oxidized sulfur species are partially reduced by reaction with the gasifier products, principally carbon monoxide and hydrogen. The reduced sulfur decomposed to solid sodium carbonate and gaseous hydrogen sulfide (H{sub 2}S). Sodium values are recovered by discharging a dry sodium carbonate product from the gasifier. MTCI's indirectly heated gasification technology for black liquor recovery also relies on the scrubbing of H{sub 2}S for product gases to regenerate green liquor for reuse in the mill circuit. Due to concerns relative to the efficiency of sulfur recovery in the MTCI integrated process, an experimental investigation was undertaken to establish performance and design data for this portion of the system.

• Research Organization: Manufacturing and Technology Conversion International, Inc., Columbia, MD (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FC05-90CE40893
• OSTI ID: 5852319
• Report Number(s): DOE/CE/40893-T1; ON: DE92003672
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320301 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Energy Sources
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
320305 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
ALKALI METAL COMPOUNDS
BLACK LIQUIDS
CARBON
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
DIAGRAMS
ELEMENTS
ENGINEERING DRAWINGS
EQUIPMENT
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
HOT GAS CLEANUP
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INDUSTRY
LIQUIDS
MANAGEMENT
MATERIAL BALANCE
MATERIALS RECOVERY
NONMETALS
OXIDATION
OXYGEN COMPOUNDS
PAPER INDUSTRY
POLLUTION CONTROL EQUIPMENT
PROCESSING
PULSE TECHNIQUES
PURIFICATION
RECOVERY
SCRUBBERS
SODIUM CARBONATES
SODIUM COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
WOOD PRODUCTS INDUSTRY