发明名称 |
DESULFURIZATION AND DECARBONATION PROCESS |
摘要 |
This invention provides a process for effecting desulfurization and decarbonation in two stages wherein an amine-containing absorbing solution is regenerated in a thermally advantageous way and the salts (such as calcium carbonate and calcium sulfate) formed during regeneration are effectively utilized. More specifically, this invention provides a desulfurization and decarbonation process wherein a gas containing sulfur oxides and carbon dioxide is first treated in a desulfurization step so as to cause sulfur oxides to be absorbed in the form of calcium-sulfur oxide compounds; the gas is then treated in a decarbonation step so as to cause carbon dioxide and any sulfur oxides escaping from the desulfurization step to be absorbed in the form of amine salts; the absorbing solution containing the amine salts is treated in a regeneration step to liberate carbon dioxide therefrom; a part of the absorbing solution having liberated carbon dioxide is recycled to the decarbonation step for use as the absorbing solution; the remainder of the absorbing solution having liberated carbon dioxide is fed to a secondary regeneration step where it is treated with a basic calcium substance to regenerate the absorbing solution containing a basic amine compound and to form a solid containing calcium-sulfur oxide compounds and calcium carbonate.
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申请公布号 |
CA2206223(C) |
申请公布日期 |
2000.07.11 |
申请号 |
CA19972206223 |
申请日期 |
1997.05.27 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
TANAKA, HIROSHI;MITSUOKA, SHIGEAKI;IIJIMA, MASAKI |
分类号 |
B01D53/34;B01D53/50;B01D53/62;B01D53/75;B01D53/77;(IPC1-7):B01D53/50 |
主分类号 |
B01D53/34 |
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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