二氧化硫脲

二氧化硫脲在OCC浆料轻度漂白中的应用研究

Research on Application of Thiourea Dioxide in Slight Bleaching of OCC Pulp

本文探讨了二氧化硫脲对PAM和HPAM凝胶化的影响，并提出用二氧化硫脲代替硫代硫酸钠作为铬凝胶体系堵水剂配方中的还原剂。

Effect of thiourea dioxide on gelatination of PAM and HPAM was investigated and it was suggested that thiourea dioxide be used as a reductant in the composition of chromium gelling system for water shut off instead of sodium thiosulfate .

二氧化硫脲还原[Ag（S2O3）2]~（3-）以沉析银的研究

Precipitation of Silver from [ Ag ( S_2O_3 ) _2 ] ~ ( 3 - ) by Thiourea Dioxide

介绍了用直接制备成的二氧化硫脲（TD）水溶液漂白废纸脱墨浆的实验情况。

The paper introduces the experiment of bleaching wastepaper deinking pulp with directly prepared thiourea dioxide water solution .

二氧化硫脲用于OCC废纸浆轻度漂白的研究及应用

The Research and Application of Thiourea Dioxide in slight bleaching OCC Pulp

二氧化硫脲在马尾松SGW漂白中的工业化应用研究

Study on Thiourea Dioxide in Commercial Bleaching of Masson 's Pine SGW

新鲜二氧化硫脲废水中主要含有二氧化硫脲、H2O2和三氧化硫脲等污染物质：废水中的二氧化硫脲与H2O2可以转化成三氧化硫脲；

The fresh wastewater from thiourea dioxide production contains mainly thiourea dioxide , H2O2 , thiourea trioxide etc as pollutants . The thiourea dioxide and H2O2 in the wastewater can be turned to thiourea trioxide .

就二氧化硫脲（TD）漂白中的三个主要过程参数（时间、温度和TD用量）对回收旧报纸浆漂白的影响进行了研究。

The effects of the three main process variables ( time , temperature and thiourea dioxide charge ) on thiourea dioxide ( TD ) bleaching of pulp from recycled old newspaper were studied .

废水中H2O2与另外加入的适量硫脲反应得到二氧化硫脲粗品，有很高的收率，所得粗品在预置水中溶解而被全部利用；

Thiourea , when added in adequate amount in the wastewater , can be oxidized by H2O2 into crude thiourea dioxide in high yield . The crude product dissolves in the pre-put water and can be totally utilized .

以H2O2为氧化剂，在水介质中把二氧化硫脲氧化成三氧化硫脲，收率为93%，纯度为98.5%，并对优化合成条件及三氧化硫脲的性质进行了讨论。

By using H 2O 2 as the oxidizing agent , thiourea S dioxide is oxidized in water medium into thiourea S trioxide in 93 % yield and 98.5 % purity . The reactional conditions and some properties of thiourea S trioxide are studied .

二氧化硫脲还原沉析银的电势法研究

The potential studies on the reduction of silver by thiourea dioxide

提高二氧化硫脲产品收率研究

Study on the Improvement of the Product Recovery Rate of Thiourea Dioxide

回收旧报纸浆的二氧化硫脲漂白工艺研究

Study on Thiourea Dioxide Bleaching Technology of Pulp from Recycled Old Newspaper

二氧化硫脲对有机化合物的还原作用研究

Study on Reduction of Organic Compounds with Thiourea Dioxide

二氧化硫脲水溶液漂白废纸脱墨浆

Bleaching wastepaper deinking pulp with thiourea dioxide water solution

二氧化硫脲在彩色混合废纸脱墨中的应用

Bleaching of Mixed Colored Wastepaper by Thiourea Dioxide

二氧化硫脲废水的特性和利用

The properties and use of thiourea dioxide wastewater

二氧化硫脲用于油井堵水剂的新配方研究

Studies on a New Formula : Thiourea Dioxide Used for Water Plugging in Oilfield

二氧化硫脲的制备研究

Preparation of Thiourea Dioxide

二氧化硫脲的制备

Preparation of Sulfourea Dioxide

通过用二氧化硫脲、保险粉和亚硫酸氧钠，对劳瓦森染料和一系列国产染料的溶液和染色的毛皮进行拔色实验，研究了这几种材料的拔色性能。

The paper studied on the stripping property of thiourea dioxide , sodium hydrosulphite , sodium bisulfite and Lowenstein dye .

提高二氧化硫脲在Ni~（2+）-NH3反应体系中利用率研究

Study the utilization of thiourea dioxide on the reaction of Ni ~ ( 2 + ) - NH_3 with thiourea dioxide

氧气法生产胍衍生物的化学反应过程中，铜离子的催化作用发生在硫脲衍生物与氧气进行反应生成二氧化硫脲衍生物的反应阶段。

Preparing guanidine derivants from thiourea derivants , catalysis of cupric ion occured in the reaction of oxygen and thiourea derivants .

当二氧化硫脲量小，加金灰化时，灰化中心分布在颗粒表面和次表面；

When emulsions were fogged by ( 1 ) a small amount of thiourea dioxide and gold salt , fog centers distributed on the grain surface and sub-surface ;

生产实践表明，二氧化硫脲是一种有效且极具竞争力的脱墨（漂白）剂，尤其对含有部分大面积染色废纸的彩色混合废纸具有较好的增白和脱色效果。

The trial results indi-cate that TD is an effective and highly competitive bleaching agent , particular for bleaching and decolorizing of mixed colored wastepaper with a portion of mass-dyed wastepaper .

在pH11.3的磁性介质中，二氧化硫脲可将芳香族硝基化合物还原为芳香族伯胺，经重氮化后与萘乙二胺反应生成红色的偶氮染料。

In the alkaline medium of pH 11 . 3 , thiourea dioxide can reduce aromatic nitro compounds to primary aromatic amines and the latters form red azo dyes with N - ( 1-naphthyl ) ethylenediamine dihydrochloride after diazotization with a maximum absorption at 525 nm .

针对目前国内使用的油井堵水剂聚丙烯酰胺铬凝胶存在可泵入时间短、堵剂用量小及有效期短等缺点，提出用二氧化硫脲代替铬凝胶配方中的硫代硫酸钠作为还原引发剂。

Seeing that water shutoff agents of polyacrylamide-chromium gel type used at home have many shortcomings , such as short pumpable time and usable life , it has been suggested to substitute thiourea dioxide for sodium thiosulfate in the formula of chromium gel system as a reducing and initiating agent .