It is pointed out that through absorbing the quintessence of both chlorination refining and sulfur acid hydrometallurgical refining processes , present traditional refining technology should be transformed so as to reliably transit to completely - hydrometallurgical refining of high grade nickel matte 指出，现行高冰镍精炼工艺的改造应吸取氯化精炼和硫酸湿法精炼两种工艺的长处，稳妥地向高冰镍全湿法精炼过渡。
Abstract : cetirizine hydrochloride was synthesized from chlorobenzene and benzoyl chloride by the friedel - crafts reaction ， reduction , and chlorination followed by condensation with piperizine , 2 - chloroethanol and sodium chloroacetate in turn in 28 . 2 % overall yield based on chlorobenzene 文摘:以氯苯和苯甲酰氯为起始原料，经付克反应、还原、氯化，再分别与哌嗪、氯乙醇、氯乙酸钠缩合，成盐制得盐酸西替利嗪，总收率为28 . 2 %
Methods 3 , 3 - bis ( dibenzyloxyphosphoiyl ) propionic acid ( 5 ) and ( 6 ) were synthesized from tetraethyl methylene bisphosphonate via hydrolysis , chlorination of the acid , esterification , condensation , then 3 , 3 - bis ( dibenzyloxyphosphoryl ) propanol ( 6 ) was obtained via selective reduction of ( 5 ) 方法以亚甲基偕二膦酸四乙酯( 1 ) ?原料经水解、氯膦酰化、酯化、缩合得3 , 3二（二苄氧膦酰基）丙酸( 5 ) ，随后选择性硼氢化还原得3 , 3二（二苄氧膦酰基）丙醇( 6 ) 。
In this paper , six methods of ammonia - nitrogen wastewater physic - chemical denitrication treatment were infroduced , such as blow - removal , steam - abstraction , crystallization , chemical precipitation , chlorination and ion exchange . their mechanisms and engineering application were analyzed and studied respectively . several problems to be cared for in development and implemention of the wastewater treatment techniques were pointed out 介绍了吹脱法、气提法、结晶法、化学沉淀法、氯化法、离子交换法6种常用的氨氮废水物化法脱氮处理技术和工程应用情况,并指出了在开发和实施氨氮废水脱氮处理技术(工程)时需要注意的问题。
The applications of iron - containing compounds ( pd / fe bimetallic system , fes2 , fe2o3 , fes , fe4 ( superscript ) fe2 ( superscript ) ( oh ) 12so4yh2o , etc ) in degradation of chlorination compounds , such as hexachloroethane , carbon tetrachloride , pentachloroethane , tetrachloroethane , trichloroethane , trichloroethylene , tetrachloroethylene and so on , are reviewed in this paper , as well as their reaction mechanisms 摘要综述了钯铁、二硫化铁、硫化铁、三氧化二铁、绿锈等含铁化合物在降解六氯乙烷、四氯化碳、五氯乙烷、四氯乙烷、三氯乙烷、三氯乙烯、四氯乙烯等有机氯化物中的应用以及降解机理。
Gas chromatography - mass spectrometry ( gc - ms ) analyses showed that both potassium permanganate and chlorine could oxidate the organic matters with unsaturated functional groups into those with carboxyl , hydroxyl and aldehyde . and it was further revealed that after preoxidation by potassium permanganate , the sorts of organic matters were reduced remarkably , however , chlorination leaded to increase of the sorts of orgnic matters and brought some chloro - organics such as chlorobenzene , chlorophenol , and trichloro - ethane 通过色谱-质谱联用( gc - ms )评价分析了高锰酸钾和氯对有机物结构的改变，高锰酸钾和氯均将原水中的一些不饱和性有机物氧化分解为一些含氧基团的有机物，如羧酸类、醇类和醛等有机物，但预氯化会在水中出现一些卤代物，卤代产物不仅出现在苯环上，而且出现在链烃上。
Abstract : the effects of sodium hydroxide concentration and chlorination temperature on effective chlorine content of calcium hypochlorite were tested . the effects of mesh number of standard sieve on effective chlorine content of calcium hypochlorite were tested . the retrieval technology of effective chlorine in mother liquor of calcium hypochlorite was researched , and the effects of cycle number on effective chlorine content of calcium hypochlorite were tested . the results indicate that when sodium hydroxide concentration is 333 . 3 g / l , and chlorination temperature is 20 , the effective chlorine content of calcium hypochlorite is highest , that when mesh number of standard sieve is 180 mesh , the effective chlorine content of calcium hypochlorite is higher , but the passing sieve rate is not too low , that the cycle number has no remarkable effect on the effective chlorine content of calcium hypochlorite , and the effective chlorine content of calcium hypochlorite is basically above 80 % 文摘:测试了烧碱质量分数和氯化温度对漂粉精有效氯含量的影响，测试了分盐用标准筛目数对漂粉精有效氯含量和过筛率的影响.研究了漂粉精母液中有效氯的回用工艺流程，并测试了循环次数对漂粉精有效氯含量的影响.结果表明，烧碱质量分数为25 、氯化温度为20时，漂粉精的有效氯含量最高；标准筛目数为180目时，漂粉精的有效氯含量较高而过筛率不太低；循环次数对漂粉精有效氯含量没有显著影响，并且漂粉精有效氯含量基本上可以达到80以上
