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    • 30. 发明申请
    • IMPROVED BIOCONTROL THROUGH THE USE OF CHLORINE-STABILIZER BLENDS
    • 通过使用氯化钠稳定剂改善生物活性成分
    • WO2013059074A1
    • 2013-04-25
    • PCT/US2012/059846
    • 2012-10-12
    • NALCO COMPANYRICE, Laura E.COOPER, Andrew J.LUTH, Elisa M.TU, Wen Li
    • RICE, Laura E.COOPER, Andrew J.LUTH, Elisa M.TU, Wen Li
    • A61L2/16A61L2/07A61L2/06D21H27/00D21H21/00
    • D21H21/36D21H17/03D21H17/11D21H21/00
    • A composition and methods of its use, the composition comprising: a halogen source, urea, and an additional halogen stabilizer excluding urea, optionally an alkali in a concentration sufficient to provide said composition with a pH of greater than 10; and optionally excluding a stabilized bromine compound from said composition is disclosed. Additionally, a method for reducing biological activity in a process stream is disclosed. The method comprises: providing a composition to a process stream, wherein said composition contains: a halogen, urea, and an additional halogen stabilizer excluding urea, optionally an alkali in a concentration sufficient to provide said composition with a pH of greater than 10; and optionally excluding a stabilized bromine compound from said composition. The invention is also directed to compositions and methods of their use as effective biocidal agents for water streams. The composition comprises a halogen source, halogen stabilizers containing a sulfur bearing species and ammonium salts/urea, and an alkali. The sulfur bearing species includes sulfamic acid or its salt equivalent. The ratio between nitrogen mixture of sulfur bearing species and ammonium salts or urea can be optimized at any rate. By having optimized mixing ratio of halogen to stabilizer and that of ammonium salts to sulfamic acid or sulfamate, a synergistic effect occurs which both increases the efficacy of the composition as a biocide and it avoids adverse impacts on other chemicals that are present in the water stream (such as paper additives in pulp and papermaking water streams). Best of all the composition is easy to form and easy to introduce into a water stream of concern. Its introduction can be as simple as mixing two containers of reagent prior to introduction to the water process stream.
    • 一种组合物及其使用方法,所述组合物包含:卤素源,尿素和除尿素外的另外的卤素稳定剂,任选地具有足以提供所述组合物的pH大于10的碱; 并公开了从所述组合物中排除稳定的溴化合物。 另外,公开了一种用于降低工艺流中生物活性的方法。 该方法包括:向工艺流提供组合物,其中所述组合物包含:除尿素外的卤素,尿素和另外的卤素稳定剂,任选地具有足以提供所述组合物的pH大于10的碱; 并且任选地从所述组合物中排除稳定的溴化合物。 本发明还涉及它们用作水流的有效杀生物剂的组合物和方法。 该组合物包含卤素源,含有硫的物质和铵盐/尿素的卤素稳定剂和碱。 含硫物种包括氨基磺酸或其盐当量。 含硫物种的氮混合物与铵盐或尿素的比例可以任何速率进行优化。 通过将卤素与稳定剂的混合比优化为铵盐与氨基磺酸或氨基磺酸盐的混合比例,会产生协同效应,这两者都可以提高组合物作为杀生物剂的功效,并避免对水流中存在的其他化学物质产生不利影响 (如纸浆和造纸水流中的纸添加剂)。 最好的组合容易形成,容易引入关注的水流。 其引入可以简单地在引入水处理流之前混合两个试剂容器。