Process for refining high temperature reducing gas |
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| 申请号 | JP13289 | 申请日 | 1989-01-05 | 公开(公告)号 | JPH02180614A | 公开(公告)日 | 1990-07-13 |
| 申请人 | Mitsubishi Heavy Ind Ltd; | 发明人 | SUEHIRO MITSUGI; SETO TORU; MITSUOKA SHIGEAKI; INOUE KENJI; | ||||
| 摘要 | PURPOSE: To raise sulfur recovery rate, to prevent degradation of absorbents due to side reaction and to decrease utility consumption of whole system by directly converting SO 2 gas purged from a regeneration system into single substance sulfur using reducing gases in the presence of catalysts under pressure. CONSTITUTION: Gases containing SO 2 after the reduction treatment of a reactor 23 join gases after the pre-regeneration treatment of a reactor 21 and are mixed with reducing gases having been dedusted and gasified from a line 2 and temperature-controlled at a heat exchanger 72 and then introduced into a SO 2 converter 74 under pressure in which catalysts 75 are filled in two stages. The gaseous sulfur having reacted in a first stage of catalyst layer of the converter 74 is passed through a heat exchanger 77 and a sulfur condenser 79 and recovered as liquid sulfur to be sent to a line 98. Outlet gases from the condenser 79 are led to the second stage of catalyst layer, where the conversion reaction of residual SO 2 is effected, and then they are passed through a heat exchanger 83 and a sulfur condenser 85 and recovered as liquid sulfur to be sent to a line 99. A part of gases from which sulfur has been separated is returned to a line 1, while the remainders are introduced into a regenerating process of a reactor 24. COPYRIGHT: (C)1990,JPO&Japio |
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