Regenerative process for desulfurization of high temperature combustion and fuel gases. Quarterly progress report No. 8, January 1-March 31, 1978

Technical Report · Sun Jan 01 04:00:00 EST 1978

DOI:https://doi.org/10.2172/6011589· OSTI ID:6011589

Yang, R T; Albanese, A S; Chen, J M; Farber, G; Kainz, F B; Pruzansky, J; Shen, M S; Steen, C L; Steinberg, M

A highly reactive ..beta..-dicalcium silicate powder sample has been acquired from Professor D. Roy of Pennsylvania State University. We will use it in conjunction with our ash-binder pelletizing technique to form a highly regenerable and reactive sorbent for fluidized bed combustion. Other techniques of forming reactive silicates are also being studied. Simplified mathematical models have been developed for kiln regeneration based on the data with a small quartz rotary kiln reactor. The model provides better undersanding for scaleup of the promising Brookhaven Kiln Regeneration Process. The Fe/sub 2/O/sub 3/ catalyzed sulfation and regeneration process has been further studied with a small quartz fluidized-bed sulfator and a small rotary kiln regenerator. Ten sulfation-regeneration cycles will be completed within the next reporting quarter. After completion of the cyclic experiments, we will make recommendations for field testing, i.e., testing in one of the DOE pilot fluidized bed combustors and regenerators. The reactivity of a reconstructed CaSO/sub 4/ is indeed higher than the original sample. We plan to further understand the morphological and structural changes taking place in the process. A detailed analysis and a review of the high temperature CaSO/sub 4/ regeneration mechanism were made. Understanding of the mechanism will be useful in improving all the regeneration processes being developed. Kinetics of the rapid reaction between CaO and SO/sub 3/ are being studied and the work will be completed shortly. This is part of our effort to understand the mechanism both in sulfation and regeneration. A good attempt has been made to use ZnO as a regenerable sorbent for hot fuel gas desulfurization. The evaporation rate of the sorbent in a reducing atmosphere is too high for this sorbent to be of practical use. 31 figures, 3 tables.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6011589
• Report Number(s): BNL-50866
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
010800 -- Coal
Lignite
& Peat-- Waste Management
ADSORBENTS
ALKALINE EARTH METAL COMPOUNDS
BINDERS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CALCIUM SILICATES
CALCIUM SULFATES
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COMBUSTION
DATA
DESULFURIZATION
ENERGY SOURCES
EXPERIMENTAL DATA
FLUE GAS
FLUIDIZED-BED COMBUSTION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASEOUS WASTES
GASES
INFORMATION
IRON COMPOUNDS
IRON OXIDES
KINETICS
LIMESTONE
MATERIALS
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
REGENERATION
REMOVAL
RESEARCH PROGRAMS
ROCKS
SEDIMENTARY ROCKS
SILICATES
SILICON COMPOUNDS
SULFATES
SULFIDATION
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SULFUR TRIOXIDE
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
WASTES
ZINC COMPOUNDS
ZINC OXIDES