CN115041150A - 一种改性活性白土复合纤维吸附管的制备方法 - Google Patents
一种改性活性白土复合纤维吸附管的制备方法 Download PDFInfo
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Abstract
本发明公开了一种改性活性白土复合纤维吸附管的制备方法:1)将活性白土筛滤之后置入酸性水溶液中搅拌均匀,加入聚丙烯酰胺、EDTA和三乙醇胺,加热到40‑80℃,持续搅拌2‑4h,水洗至中性,袋滤得改性活性白土浆液;2)将纤维穿过上浆槽,绕上收丝器,将浆液置入上浆槽中,再穿过加热炉,50‑80℃烘干,得上浆纤维;3)将上浆纤维集成束,纵向装填在金属管中,两端用滤网封端。本发明采用聚丙烯酰胺、EDTA和三乙醇胺在酸性环境中对活性白土进行改性,酸性环境下活性白土会游离部分铁离子和铝离子,可以形成络合物,从而增加活性白土的网状结构,附着在纤维上不易分散,制备成吸附管,油剂可充分与各处的活性白土接触,吸附效率高。
Description
技术领域
本发明涉及吸附剂技术领域,尤其涉及一种改性活性白土复合纤维吸附管的制备方法。
背景技术
天然粘土经酸处理后称为活性白土。活性白土的主要成分是硅藻土,由二氧化硅、氧化铁、氧化铝等主要物质组成。活性白土具有天然的活性成分,具有优良的吸附能力,可用于润滑油及动植物油脂的脱色精制,石油馏分的脱色或脱水及溶剂的精制。活性白土用于吸附油剂杂质时,通常是将活性白土填充在过滤器件中,油剂从过滤器件的一端向另一端流过,油剂中的杂质被活性白土吸附。采用这种方式过滤器件中的活性白土吸附程度不一致,先接触油剂的活性白土先吸附饱和,导致活性白土应用不充分,影响吸附效果。
发明内容
本发明针对现有填充式吸附器件中活性白土问题,提供一种改性活性白土复合纤维吸附管的制备方法,包括以下步骤:1)将活性白土筛滤之后置入酸性水溶液中搅拌均匀,加入聚丙烯酰胺、EDTA和三乙醇胺,加热到40-80℃,持续搅拌2-4h,反复水洗至中性,袋滤后得改性活性白土浆液;2)将纤维穿过上浆槽,绕上收丝器,将步骤1)所得改性活性白土浆液置入上浆槽中,再穿过加热炉,50-80℃烘干,得上浆纤维;3)将步骤2)所得上浆纤维集成束,纵向装填在金属管中,两端用滤网封端,制得改性活性白土复合纤维吸附管。
具体地,步骤1)中,所述酸性水溶液的pH为5-6;聚丙烯酰胺、EDTA和三乙醇胺的重量比为100:(5-10):(20-40);聚丙烯酰胺、EDTA和三乙醇胺的总重量为所述活性白土重量的1/5~1/3;步骤2)中,所述上浆纤维的上浆量为纤维重量的1/10~1/6。
本发明采用聚丙烯酰胺、EDTA和三乙醇胺在酸性环境中对活性白土进行改性,酸性环境下活性白土会游离部分铁离子和铝离子,可以形成络合物,从而增加活性白土的网状结构,附着在纤维上之后不易分散,制备成吸附管,油剂穿过时可充分与各处的活性白土接触,吸附效率高。
具体实施方式
以下结合实例对本发明进行描述,所举实例只用于解释本发明,并非用于限定本发明的范围。
实施例1
一种改性活性白土复合纤维吸附管的制备方法,包括以下步骤:1)将500重量份活性白土筛滤之后置入pH为6的盐酸溶液中搅拌均匀,加入100重量份聚丙烯酰胺、10重量份EDTA和40重量份三乙醇胺,加热到80℃,持续搅拌2h,反复水洗至中性,袋滤后得改性活性白土浆液;2)将PA6纤维穿过上浆槽,绕上收丝器,将步骤1)所得改性活性白土浆液置入上浆槽中,控制走丝速度,保证上浆量为PA6纤维重量的1/10,再穿过加热炉,50℃烘干,得上浆纤维;3)将步骤2)所得上浆纤维集成束,纵向装填在金属管中,两端用滤网封端,制得改性活性白土复合纤维吸附管。
实施例2
一种改性活性白土复合纤维吸附管的制备方法,包括以下步骤:1)将750重量份活性白土筛滤之后置入pH为5的硫酸溶液中搅拌均匀,加入100重量份聚丙烯酰胺、5重量份EDTA和20重量份三乙醇胺,加热到60℃,持续搅拌3h,反复水洗至中性,袋滤后得改性活性白土浆液;2)将PET纤维穿过上浆槽,绕上收丝器,将步骤1)所得改性活性白土浆液置入上浆槽中,控制走丝速度,保证上浆量为PET纤维重量的1/8,再穿过加热炉,80℃烘干,得上浆纤维;3)将步骤2)所得上浆纤维集成束,纵向装填在金属管中,两端用滤网封端,制得改性活性白土复合纤维吸附管。
实施例3
一种改性活性白土复合纤维吸附管的制备方法,包括以下步骤:1)将1000重量份活性白土筛滤之后置入pH为6的硫酸溶液中搅拌均匀,加入100重量份聚丙烯酰胺、8重量份EDTA和30重量份三乙醇胺,加热到40℃,持续搅拌3h,反复水洗至中性,袋滤后得改性活性白土浆液;2)将PA66纤维穿过上浆槽,绕上收丝器,将步骤1)所得改性活性白土浆液置入上浆槽中,控制走丝速度,保证上浆量为PA66纤维重量的1/6,再穿过加热炉,60℃烘干,得上浆纤维;3)将步骤2)所得上浆纤维集成束,纵向装填在金属管中,两端用滤网封端,制得改性活性白土复合纤维吸附管。
取五根内径为5cm、长度为20cm的金属管,分别将实施例1-3所得改性活性白土复合纤维垂直填充在其中三根中,剩余两根填充活性白土,作为对比例1和2,用纱网封端后分别过滤1立方米含有3.1%杂质的白油,低温烘干后称量,计算单位重量的活性白土的吸附性能(吸附杂质的重量与活性白土的用量比),结果如表1所示。
表1.活性白土的吸附性能检测
活性白土填充量/g | 吸附管增重/g | 吸附性能(g/g) | 过滤用时/min | |
实施例1 | 79.6 | 19.35 | 0.243 | 176 |
实施例2 | 107.2 | 22.46 | 0.210 | 183 |
实施例3 | 146.5 | 24.61 | 0.168 | 214 |
对比例1 | 1099 | 20.33 | 0.0184 | 548 |
对比例2 | 1085 | 22.67 | 0.0209 | 659 |
从表1数据可以看出,本发明实施例1-3活性白土经过改性附着在纤维上之后吸附性能可提升10倍左右,并且吸附用时大幅缩短。
以上所述仅为本发明的较佳实施例,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (5)
1.一种改性活性白土复合纤维吸附管的制备方法,其特征在于,包括以下步骤:
1)将活性白土筛滤之后置入酸性水溶液中搅拌均匀,加入聚丙烯酰胺、EDTA和三乙醇胺,加热到40-80℃,持续搅拌2-4h,反复水洗至中性,袋滤后得改性活性白土浆液;
2)将纤维穿过上浆槽,绕上收丝器,将步骤1)所得改性活性白土浆液置入上浆槽中,再穿过加热炉,50-80℃烘干,得上浆纤维;
3)将步骤2)所得上浆纤维集成束,纵向装填在金属管中,两端用滤网封端,制得改性活性白土复合纤维吸附管。
2.根据权利要求1所述的方法,其特征在于,步骤1)中,所述酸性水溶液的pH为5-6。
3.根据权利要求1所述的方法,其特征在于,步骤1)中,聚丙烯酰胺、EDTA和三乙醇胺的重量比为100:(5-10):(20-40)。
4.根据权利要求1所述的方法,其特征在于,步骤1)中,聚丙烯酰胺、EDTA和三乙醇胺的总重量为所述活性白土重量的1/5~1/3。
5.根据权利要求1所述的方法,其特征在于,步骤2)中,所述上浆纤维的上浆量为纤维重量的1/10~1/6。
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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GB1466473A (en) * | 1973-11-08 | 1977-03-09 | Ciba Geigy Ag | Process for purifying industrial effluents |
US20030168401A1 (en) * | 2002-01-31 | 2003-09-11 | Koslow Evan E. | Microporous filter media, filtration systems containing same, and methods of making and using |
CN101204645A (zh) * | 2006-12-22 | 2008-06-25 | 中国石油化工股份有限公司 | 一种改性白土,其制备方法及应用 |
CN102205230A (zh) * | 2011-05-14 | 2011-10-05 | 山西大学 | 一种用于油脂脱色的活性白土的加工方法 |
CN102947082A (zh) * | 2010-04-06 | 2013-02-27 | 金沃特公司 | 生物材料的稳定化的化学脱水 |
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Publication number | Priority date | Publication date | Assignee | Title |
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GB1466473A (en) * | 1973-11-08 | 1977-03-09 | Ciba Geigy Ag | Process for purifying industrial effluents |
US20030168401A1 (en) * | 2002-01-31 | 2003-09-11 | Koslow Evan E. | Microporous filter media, filtration systems containing same, and methods of making and using |
CN101204645A (zh) * | 2006-12-22 | 2008-06-25 | 中国石油化工股份有限公司 | 一种改性白土,其制备方法及应用 |
CN102947082A (zh) * | 2010-04-06 | 2013-02-27 | 金沃特公司 | 生物材料的稳定化的化学脱水 |
CN102205230A (zh) * | 2011-05-14 | 2011-10-05 | 山西大学 | 一种用于油脂脱色的活性白土的加工方法 |
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