发明名称 |
METHOD OF REMOVING SULFUR DIOXIDE AND OTHER POLLUTANT FROM WASTE HEAT GAS CURRENT AND RECOVERING AMMONIUM SULFATE AS ITS BYYPRODUCT |
摘要 |
<p>A process for the removal of sulfur dioxide and other contaminants and the recovery of ammonium sulfate as a by-product from a hot waste gas stream comprising cooling the waste gas stream to a temperature below 120 DEG F., passing said waste gas stream in sequence through at least two separate absorption zones utilizing as an absorbent a recirculated aqueous salt solution of ammonium sulfite-bisulfite, withdrawing and oxidizing a portion of said aqueous ammonium sulfite-bisulfite salt solution under pressures and temperatures sufficient to substantially convert the salts to sulfate salts, and recycling the ammonia and sulfur dioxide vapors liberated during oxidation to the first absorption zone.</p> |
申请公布号 |
JPS55147135(A) |
申请公布日期 |
1980.11.15 |
申请号 |
JP19800026776 |
申请日期 |
1980.03.05 |
申请人 |
ITT |
发明人 |
KURUTO FURIIDORITSUHI KAUPISHI;DAGURASU UIRIAMU BENETSUTO;RAFUAERU KATSUEN |
分类号 |
B01D53/50;B01D53/77;C01C1/22;C01C1/24;C01C1/242 |
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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