Sulfation of Al[sub 2]O[sub 3] in flue gas desulfurization by CuO/[gamma]-Al[sub 2]O[sub 3] sorbent
- Korea Advanced Inst. of Science and Technology, Taejon (Korea, Republic of). Dept. of Chemical Engineering
Deep sulfation of alumina support in flue gas desulfurization by CuO/[gamma]-Al[sub 2]O[sub 3] sorbent causes a detrimental effect on stability and regeneration of the sorbent since regeneration of sulfated sorbent requires higher temperatures. To define the sulfation characteristics of alumina support in CuO/[gamma]-Al[sub 2]O[sub 3], the effects of temperature, CuO loading, and addition of NaCl on sulfation of alumina support have been determined in a thermobalance reactor. The sulfation degree of alumina support in terms of the amount of sulfate ions present on the support can be classified into three types (surface, slightly deep, and bulk solutions) as a function of reaction temperature and CuO loading. Surface sulfation (sulfate ions < 2.0 [times] 10[sup 18] ions/m[sup 2]) occurs at CuO loading between 2 and 11 wt% at reaction temperature 250--350 C, slightly deep sulfation (2.0 [times] 10[sup 18] ions/m[sup 2] < sulfate ions < 3.4 [times] 10[sup 18] ions/m[sup 2]) occurs with the loading below 4 wt % at 350--600 C, and bulk sulfation (3.4 [times] 10[sup 18] ions/m[sup 2]
- OSTI ID:
- 6927342
- Journal Information:
- Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 33:7; ISSN IECRED; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ADSORBENTS
AIR POLLUTION CONTROL
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ALUMINIUM SULFATES
CATALYST SUPPORTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CONTROL
COPPER COMPOUNDS
COPPER OXIDES
DESULFURIZATION
FLUE GAS
GASEOUS WASTES
HALIDES
HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
SODIUM CHLORIDES
SODIUM COMPOUNDS
SULFATES
SULFIDATION
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SULFUR TRIOXIDE
TRANSITION ELEMENT COMPOUNDS
WASTES