首页> 外文会议>International Chemical Recovery Conference v.1; 20040606-20040610; Charleston,SC; US >Caustic Soda Production from Green Liquor Using the Green Liquor Splitting (GLS) System
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Caustic Soda Production from Green Liquor Using the Green Liquor Splitting (GLS) System

机译:使用绿液裂解(GLS)系统从绿液生产苛性钠

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A fixed-resin bed system employing an amphoteric ion-exchange resin was used to separate green liquor from a kraft mill into sodium hydrosulphide-rich and sodium carbonate/hydroxide-rich components. Depending on the conditions used, the separation efficiencies ranged from 80 to 96% for sodium hydrosulphide, 90 to 95% for sodium carbonate and 74 to 92% for sodium hydroxide. Three possible applications for green liquor splitting are discussed. These are: the removal of excess sodium from green liquor (i.e., when alkaline extraction filtrate is recycled to the recovery system in a kraft mill), chemical cross recovery between a semichemical and a kraft mill, and recovery of excess sodium from waste chlorine dioxide generator saltcake.
机译:使用采用两性离子交换树脂的固定树脂床系统,将牛皮纸制浆厂的绿液分离为富氢硫化钠和富碳酸钠/氢氧化钠的组分。根据所用条件的不同,氢硫化钠的分离效率为80%至96%,碳酸钠的分离效率为90%至95%,氢氧化钠的分离效率为74%至92%。讨论了绿液裂解的三种可能的应用。它们是:从绿液中除去过量的钠(即,将碱性提取滤液再循环到牛皮纸制浆厂的回收系统中),半化学制品和牛皮纸制浆厂之间的化学交叉回收以及从废二氧化氯中回收过量的钠。发电机盐饼。

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