发明名称 |
Wet scrubbing method and apparatus for removing sulfur oxides from combustion effluents |
摘要 |
Sulfur oxides (SOx) are scrubbed from combustion effluents with aqueous limestone slurries with greater efficiency and with economies in capital and operating costs. In the preferred embodiment of a single-loop, open-tower countercurrent limestone wet scrubber, effluent flow rates are greatly increased while L/G values and reaction tank residence times are decreased. Improved entrainment eliminator design, novel nozzle placement and spacing, and the use of a hydrocyclone to separate and recycle smaller particles of limestone from the byproduct gypsum, facilitate these advantages. The limestone is reduced to very fine particles, e.g. about 8 mu or less with more than 99% of the particle by weight less than 44 mu , and introduced into a scrubbing slurry which is contacted with SOx-laden effluent.
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申请公布号 |
US5635149(A) |
申请公布日期 |
1997.06.03 |
申请号 |
US19940257698 |
申请日期 |
1994.06.09 |
申请人 |
ABB ENVIRONMENTAL SYSTEMS DIVISION OF ABB FLAKT, INC. |
发明人 |
KLINGSPOR, JONAS S.;BAKKE, EVEN;BRESOWAR, GERALD E. |
分类号 |
B01D53/50;B01D53/73;C01F11/18;F23J15/00;F23J15/04;(IPC1-7):C01B17/22 |
主分类号 |
B01D53/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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