发明名称 |
METHOD OF PREVENTING DECOMPOSITION OF CHELATING AGENT USED FOR REMOVING HYDROGEN SULFIDE AND REDOX CATALYST MIXED PRODUCT USED FOR SAID METHOD |
摘要 |
<p>In a cyclic hydrogen sulfide oxidation-catalyst regeneration process using an aqueous chelated polyvalent metal catalyst solution, excessive degradation of the aminopolycarboxylic acid chelating agent is prevented by incorporating in the solution an effective amount of a stabilizing agent capable of retarding or preventing rupture of nitrogen-carbon bonds in the chelating agent during oxidative regeneration of the catalyst solution. Alkaline thiosulfates are the preferred stabilizing agents. Particularly good results are obtained using an alkaline thiosulfate stabilizer in a catalyst solution comprising the dimer form of the NTA-iron complex.</p> |
申请公布号 |
JPS6377520(A) |
申请公布日期 |
1988.04.07 |
申请号 |
JP19860215598 |
申请日期 |
1986.09.11 |
申请人 |
A R I TECHNOL INC |
发明人 |
DEREKU MAKUMANASU;FUREDERITSUKU AARU KIN |
分类号 |
B01J31/22;B01D53/14;B01D53/34;B01D53/52;B01D53/77;B01J31/28;B01J38/12;B01J38/48;C01B17/04;C01B17/05;C10K1/10 |
主分类号 |
B01J31/22 |
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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