会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Process for producing sulfuric acid with low levels of niter
    • 生产硫酸水平低的方法
    • US09499405B2
    • 2016-11-22
    • US14642840
    • 2015-03-10
    • E I DU PONT DE NEMOURS AND COMPANY
    • Hasan Dindi
    • C01B17/90C01B17/94
    • C01B17/90
    • This disclosure relates to a process for producing sulfuric acid with reduced levels of niter. The process involves (a) providing an absorption tower wherein sulfur trioxide is absorbed in a sulfuric acid feed having a first sulfuric acid solution to produce a sulfuric acid effluent having (i) a second sulfuric acid solution which has a higher concentration than the first sulfuric acid solution, (ii) a niter concentration greater than about 5 ppm (as NO3), and (iii) a temperature greater than 100° C.; and (b) contacting a first purifying agent comprising sulfamic acid and a second purifying agent comprising hydrogen peroxide with the sulfuric acid effluent to form a treated sulfuric acid effluent, the treated sulfuric acid effluent being maintained at a temperature of greater than 100° C. for a maintenance period of at least about 1 minute.
    • 本公开涉及一种生产硫酸水平降低的方法。 该方法包括(a)提供吸收塔,其中三氧化硫被吸收在具有第一硫酸溶液的硫酸进料中以产生硫酸流出物,其具有(i)比第一硫酸更高的浓度的第二硫酸溶液 酸溶液,(ii)大于约5ppm的硝酸盐浓度(作为NO 3),和(iii)大于100℃的温度; 和(b)使包含氨基磺酸的第一纯化剂和包含过氧化氢的第二纯化剂与硫酸流出物接触以形成经处理的硫酸流出物,处理的硫酸流出物保持在大于100℃的温度。 维持期至少约1分钟。