胶体化泥浆化学固液的分离

发布时间：2018-04-25 08:00

本文选题：泥浆 + 固液分离　；参考：《天津工业大学学报》2017年03期

【摘要】：为解决废弃钻井泥浆固-液两相难分离的问题,利用具有高黏度的高分子凝聚剂对泥浆体系进行胶体化处理,使泥浆由流体转化为冻状胶态,通过化学胶体的破胶与聚沉作用、酸化破胶及无机助凝的过程,实现废弃泥浆的固液分离.通过场发射扫描电子显微镜对泥饼的表面形貌进行了分析.结果表明:泥浆分离效果由凝聚剂、酸化剂以及助凝剂的类型与投加量决定,当有机成胶剂为A-PA、破胶剂为H20、无机助凝剂为Ca(OH)2,且投加量分别为0.375 g、0.5 g和15.0 g时,钻井泥浆固液分离效果最好,泥饼的固相质量分数(固含量)由44.5%提高到80.5%.
[Abstract]:In order to solve the problem that solid-liquid two phases are difficult to separate from waste drilling mud, the slurry system is treated with high viscosity polymer coagulant. The slurry is transformed from fluid to frozen colloid state, and the gel breaking and coalescence of chemical colloid are adopted. Acidification of gel breaking and inorganic coagulation process to achieve solid-liquid separation of waste mud. The surface morphology of mud cake was analyzed by field emission scanning electron microscope. The results showed that the slurry separation effect was determined by the type and dosage of coagulant, acidifier and coagulant. When the organic gelling agent was A-PAA, the gel breaker was H20 and the inorganic coagulant was CaOH _ (2), the dosage was 0.375 g / g and 15.0 g, respectively. The solid liquid separation effect of drilling mud is the best, and the solid content of mud cake is increased from 44.5% to 80.5%.
【作者单位】：天津工业大学环境与化学工程学院;天津市纺织纤维界面处理技术工程中心;天津工大纺织助剂有限公司;
【基金】：中国石油科研项目(DGYT20167S374)
【分类号】：TQ028;X741

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