JPS5717847B2 -
| 专利类型 | 发明专利 | 法律事件 | |
| 专利有效性 | 失效专利 | 当前状态 | |
| 申请号 | JP1961478 | 申请日 | 1978-02-24 |
| 公开(公告)号 | JPS5717847B2 | 公开(公告)日 | 1982-04-13 |
| 申请人 | 申请人类型 | ||
| 发明人 | 第一发明人 | ||
| 权利人 | 权利人类型 | ||
| 当前权利人 | 当前权利人类型 | ||
| 省份 | 当前专利权人所在省份： | 城市 | 当前专利权人所在城市： |
| 具体地址 | 当前专利权人所在详细地址： | 邮编 | 当前专利权人邮编： |
| 主IPC国际分类 | B01D53/58 | 所有IPC国际分类 | B01D53/58 ; C01B25/08 ; C01B25/28 ; C01C1/00 ; C01C1/28 ; C02F1/20 ; C23F11/14 |
| 专利引用数量 | 0 | 专利被引用数量 | 1 |
| 专利权利要求数量 | 0 | 专利文献类型 | B2 |
| 专利代理机构 | 专利代理人 | ||
| 摘要 | PURPOSE:To separation recover NH3 as NH4 salt of a mineral acid and prevent corrosion of the apparatus due to hydrogen sulfide acidified with the mineral acid, by contacting a gas contg. H2S and NH3 to mother liquor of the mineral acid contg. a high b.p., nitrogen-contg. heterocyclic cpd. CONSTITUTION:Effluent from a process for hydrodesulfurizing a petroleum fraction contg. S and N is supplied to effluent stripper 3 through conduit 1 and heat exchanger 2. A mixed gas mainly consisting of H2S and NH3 stripped is fed to NH3 absorption tower 5, and a regenerated absorbing soln. from the bottom of stripper 3 is recycled through conduit 6. Tower 5 is filled with mother liquor of a mineral acid such as sulfuric acid, and the acid contains 0.1-2 wt% of a nitrogen-contg. heterocyclic cpd. of a b.p. above 115 deg.C, e.g. quinolines or isoquinolines. Sulfuric acid and the corrosion inhibitor are supplied from conduits 7 and 8, respectively, and gas from conduit 4 is introduced into the mother liquor as bubbles to recover NH3 as ammonium sulfate. Corrosion of the apparatus due to hydrogen sulfide acidified with sulfuric acid is prevented with the heterocyclic cpd. | ||
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