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摘要:一种碱法制浆造纸黑液脱除木素工艺,直接向碱性黑液中加入有机聚合电解质A聚丙烯酰胺、聚丙烯酸盐及其取代衍生物等,溶解后再加入酸性物质B,调节黑液的pH值≤5,木素立即聚集、析出,分离出的固形物用作工业原料,生产有机无机复合肥,回收液回用于制浆系统,本发明工艺简单,操作方便,运行可靠、费用低,一次性投资少,木素分离彻底,既治理了污染,又综合利用了资源,具有显著的环境,社会和经济效益。
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Abstract: A process for removing lignin from the black liquor in making paper by soda pulping includes adding organic polymer electrolyte to the alkaline black liquor, including polyacrylamide, polyacrylate and its substituted derivatives, dissolving, adding acidic substance, and regulating pH value until it is less than or equal to 5 to coagulate and separate out lignin immediately. The separated-out solid substance can be used to prepare organic-inorganic compound fertilizer. The recovered liquid can be returned back to pulping system. Its advantages are simple process, high reliability, low cost, full separation of lignin, and decreasing environmental pollution.
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申请人: 孙海明 张富强 唐启 王金本 冯玉军
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Applicant: SUN HAIMING[CN]
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地址: 462500河南省********(隐藏)
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发明(设计)人: 孙海明 张富强 唐启 王金本 冯玉军
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Inventor: SUN HAIMING[CN]; ZHANG FUQIANG[CN]; TANG QI[CN]
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主分类号: D21C11/04
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分类号: D21C11/04 C02F1/54
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