Reduction of spalling in mixed metal oxide desulfurization sorbents by addition of a large promoter metal oxide
Patent
·
OSTI ID:871259
- Star City, WV
Mixed metal oxide pellets for removing hydrogen sulfide from fuel gas mixes derived from coal are stabilized for operation over repeated cycles of desulfurization and regeneration reactions by addition of a large promoter metal oxide such as lanthanum trioxide. The pellets, which may be principally made up of a mixed metal oxide such as zinc titanate, exhibit physical stability and lack of spalling or decrepitation over repeated cycles without loss of reactivity. The lanthanum oxide is mixed with pellet-forming components in an amount of 1 to 10 weight percent.
- Research Organization:
- National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
- Assignee:
- United States of America as represented by Department of Energy (Washington, DC)
- Patent Number(s):
- US 5693588
- OSTI ID:
- 871259
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/502/423/
10
addition
amount
coal
components
cycles
decrepitation
derived
desulfurization
desulfurization sorbents
exhibit
fuel
fuel gas
gas
gas mixes
generation reaction
hydrogen
hydrogen sulfide
lack
lanthanum
lanthanum oxide
loss
metal
metal oxide
mixed
mixed metal
mixes
operation
oxide
pellet-forming
pellets
percent
physical
principally
promoter
promoter metal
reactions
reactivity
reduction
regeneration
regeneration reaction
removing
removing hydrogen
repeated
repeated cycles
sorbents
spalling
stability
stabilized
sulfide
titanate
trioxide
weight
weight percent
zinc
zinc titanate
10
addition
amount
coal
components
cycles
decrepitation
derived
desulfurization
desulfurization sorbents
exhibit
fuel
fuel gas
gas
gas mixes
generation reaction
hydrogen
hydrogen sulfide
lack
lanthanum
lanthanum oxide
loss
metal
metal oxide
mixed
mixed metal
mixes
operation
oxide
pellet-forming
pellets
percent
physical
principally
promoter
promoter metal
reactions
reactivity
reduction
regeneration
regeneration reaction
removing
removing hydrogen
repeated
repeated cycles
sorbents
spalling
stability
stabilized
sulfide
titanate
trioxide
weight
weight percent
zinc
zinc titanate