Study of fluidized-bed desulfurization with zinc ferrite
Previous work established the technical feasibility of desulfurizing the hot product gases of coal gasification with fixed beds of a regenerable zinc ferrite sorbent. This process, intended for integration with coal gasifiers and gas turbines, has been tested and studied in considerable detail in a process development unit. Though possessing the advantages of high-sulfur absorption at low-sulfur breakthrough and the lack of sorbent attrition characteristic of a stationary bed, fixed beds also have inherent disadvantages: susceptibility to plugging by particles and a large diluent requirement during regeneration to control the reaction zone temperature. Therefore, METC conducted a scoping laboratory test program to determine the desulfurizing capability of fluid beds of zinc ferrite. Results from this program are presented. The results generally demonstrated that fluid beds of zinc ferrite have the potential to lower the H{sub 2}S level in hot gas from 10,000 to 10 ppmv. To achieve this at a high-sorbent sulfur loading would require two fluid-bed stages. Sorbent attrition appears to be acceptably low. Planned future activities include tests at high pressure with both simulated gas and in a gasifier sidestream.
- Research Organization:
- USDOE Morgantown Energy Technology Center (METC), WV (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- OSTI ID:
- 5877687
- Report Number(s):
- DOE/METC-91/4107; ON: DE91002088
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FERRITES
SORPTIVE PROPERTIES
FUEL GAS
DESULFURIZATION
HYDROGEN SULFIDES
ABSORPTION
COAL GASIFICATION
FLUIDIZED BEDS
HOT GAS CLEANUP
MORGANTOWN ENERGY TECHNOLOGY CENTER
REGENERATION
ZINC COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
FERRIMAGNETIC MATERIALS
FLUIDS
FUELS
GAS FUELS
GASES
GASIFICATION
HYDROGEN COMPOUNDS
IRON COMPOUNDS
MAGNETIC MATERIALS
MATERIALS
NATIONAL ORGANIZATIONS
OXYGEN COMPOUNDS
PURIFICATION
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
US DOE
US ORGANIZATIONS
010404* - Coal
Lignite
& Peat- Gasification
010402 - Coal
Lignite
& Peat- Purification & Upgrading