木屑制备高孔隙成型活性炭及Doehlert设计法优化

doi:10.3969/j.issn.1673-5854.2017.06.004

生物质化学工程 ›› 2017, Vol. 51 ›› Issue (6): 19-25.doi: 10.3969/j.issn.1673-5854.2017.06.004

木屑制备高孔隙成型活性炭及Doehlert设计法优化

殷蒙蒙¹, 唐瑞源², 吕炳勇³, 乔英云², 田原宇^1,2

1. 山东科技大学低碳能源研究中心, 山东青岛 266590;
2. 中国石油大学(华东)重质油国家重点实验室, 山东青岛 266580;
3. 胜利油田滨南采油厂管理七区注采一站, 山东滨州 256600

收稿日期:2016-11-09 出版日期:2017-11-30 发布日期:2017-12-08
通讯作者: 田原宇,教授,博士生导师,主要研究方向为低碳能源化工工艺与设备一体化;E-mail:tianyy1008@126.com。 E-mail:tianyy1008@126.com
作者简介:殷蒙蒙(1991-),女,山东济南人,硕士生,从事低碳能源化工方面的研究;E-mail:yinmengmeng91@126.com
基金资助:
国家自然科学基金资助项目（21576294）

Preparation of High Porosities Active Carbon Monoliths from Sawdust and Doehlert Matrix Method Optimization

YIN Mengmeng¹, TANG Ruiyuan², LÜ Bingyong³, QIAO Yingyun², TIAN Yuanyu^1,2

1. Key Laboratory of Low Carbon Energy and Chemical Engineering, Shandong University of Science and Technology, Qingdao 266590, China;
2. State Key Laboratory of Heavy Oil Processing, China University of Petroleum(EastChina), Qingdao 266580, China;
3. Binnan Oil Production Factory of Shengli Oilfield Management Zone Seven Injection Station, Binzhou 256600, China

Received:2016-11-09 Online:2017-11-30 Published:2017-12-08

摘要/Abstract

摘要： 以木屑为原料，不添加任何黏结剂，使用H₃PO₄作为活化剂，制备高孔隙的成型活性炭。利用N₂吸附-脱附、XRD及万能试验机，考察了不同活化时间（1~3 h）、活化温度（500~700 ℃）对成型活性炭性能的影响。结果表明：制备的成型活性炭具有较高的比表面积、孔隙率、得率、表观密度、耐压强度和总孔容积。在活化温度为600 ℃，活化时间为1 h的条件下，其比表面积达1 022.6 m²/g，得率为32.2 %，表观密度为0.62 g/cm³，耐压强度为5.23 MPa，总孔容积为0.49 cm³/g，微孔比例达到91.8 %。通过Doehlert设计法对反应条件进行优化，结果表明优化的制备条件为活化温度590 ℃，活化时间2.1 h，此时成型活性炭得率、耐压强度和表观密度分别为31.8 %、5.54 MPa、0.87 g/cm³。理论值和实验值存在很好的一致性，表明该理论模型是可靠的。

关键词: 成型活性炭, 高孔隙, H₃PO₄, Doehlert设计法, 活化时间

Abstract: Sawdust was used as precursor to prepare binderless high porosities active carbon monoliths(ACMs) with H₃PO₄ as activator and without binder. The influences of temperature(500-700 ℃) and activation time(1-3 h) on the properties of ACMs were analyzed by N₂ adsorption-desorption, X-ray diffraction(XRD) and compression test. The results showed that the ACMs had high specific surface area, porosity, yield, apparent density, compressive strength and total pore volume and they could reach 1 022.6 m²/g, 32.2 %, 0.62 g/cm³, 5.23 MPa, 0.49 cm³/g and 91.8 % when the activation temperature was 600 ℃ and the activation time was 1 h. The Doehlert matrix method was used to optimize the reaction conditions and the optimal temperature and time were 590 ℃ and 2.1 h. Under these conditions the yield, compressive strength and density of ACMs were 31.8%, 5.54 MPa and 0.87 g/cm³. It was found that the theoretical value was consistent with experimental value and the theoretical model was reliable.

Key words: active carbon monoliths, high porosities, phosphoric acid, Doehlert matrix method, activation time

中图分类号:

TQ35

殷蒙蒙, 唐瑞源, 吕炳勇, 乔英云, 田原宇. 木屑制备高孔隙成型活性炭及Doehlert设计法优化[J]. 生物质化学工程, 2017, 51(6): 19-25.

YIN Mengmeng, TANG Ruiyuan, LÜ Bingyong, QIAO Yingyun, TIAN Yuanyu. Preparation of High Porosities Active Carbon Monoliths from Sawdust and Doehlert Matrix Method Optimization[J]. bce, 2017, 51(6): 19-25.

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木屑制备高孔隙成型活性炭及Doehlert设计法优化

Preparation of High Porosities Active Carbon Monoliths from Sawdust and Doehlert Matrix Method Optimization

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