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METHOD OF TREATING AQUEOUS SOLUTIONS CONTAINING HYDROGEN SULFIDE, HYDROGEN CYANIDE, AND AMMONIA

机译：处理包含硫化氢，氰化氢和氨的水溶液的方法

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FIELD: waste water purification. SUBSTANCE: polluted aqueous solution is acidified with sulfuric or nitric acid to pH about 3 and treated with inert gas in distilling column. Then pH of solution is raised to at least about 10 with sodium hydroxide and treated once again with inert gas in the second distilling column. In the method of invention, solution is treated with air or steam produced by solution under treatment and treatment in the both columns is carried out at 60-150 C, advantageously 80-120 C, and pressure 0.02-0.5 MPa, better 0.05-0.12 MPa. The first column contains 1-30, better 6-12 theoretical plates, the second one 5-50 and 6-20, respectively. Top product from the first and/or second column is condensed and returned into top part of corresponding column. Distilled hydrogen sulfide, hydrogen cyanide, and ammonia are catalytically burned. EFFECT: enhanced efficiency of process. 9 cl, 2 dwg

机译：领域：废水净化。物质：被污染的水溶液用硫酸或硝酸酸化至pH约为3，并在蒸馏塔中用惰性气体处理。然后用氢氧化钠将溶液的pH值升至至少约10，并在第二蒸馏塔中再次用惰性气体处理。在本发明的方法中，用在处理中的溶液产生的空气或蒸汽处理溶液，并且在两个塔中的处理在60-150℃，有利地80-120℃，压力0.02-0.5MPa，更好的0.05-0.12下进行。 MPa。第一列包含1-30个更好的6-12个理论塔板，第二列分别包含5-50和6-20。来自第一和/或第二塔的顶部产物被冷凝并返回到相应塔的顶部。蒸馏出的硫化氢，氰化氢和氨被催化燃烧。效果：提高了流程效率。 9厘升，2公升

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公开/公告号RU2078054C1

专利类型
公开/公告日1997-04-27

原文格式PDF
申请/专利权人 KHEKHST AG (DE);
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申请/专利号SU19915010509
发明设计人 TOMAS MJULLERDE;ROLF-DITER FISHERDE;ULRIKH GERKHARDUSDE;NORBERT LEDERDE;KLAUS POLOSTSIKDE;PETER SHNELLERDE;VOLFGANG BRUNKEDE;
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申请日1991-12-16
分类号C02F1/72;
国家 RU
入库时间 2022-08-22 03:16:00

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