张琳^1,2,孙莹²,杨林军^1,2

• 1:江苏省煤基CO₂捕集与地质封存重点实验室，江苏 徐州 221008
• 2:东南大学 能源热转换及其过程测控教育部重点实验室，江苏 南京 210096

摘要(Abstract)：

利用搭建的原子力显微镜（AFM）黏附力测试平台，选取典型湿法脱硫净烟气中的细颗粒制备颗粒探针，研究分析了膜吸收CO₂过程中，飞灰颗粒和脱硫石膏颗粒对聚丙烯（PP）膜的污染机理；在相对湿度为0~85%的气氛下，测量了单个SiO₂颗粒和石膏颗粒与PP膜及颗粒间的黏附力，考察了表面粗糙度、相对湿度（RH）、颗粒物性等对黏附力的影响。结果表明：干燥条件下，膜表面粗糙度对颗粒在其上的黏附力影响不大；然而潮湿环境下黏附力受环境湿度影响较大，随着RH不断增加，SiO₂和石膏颗粒对膜的临界黏附力随RH的升高逐渐增加；潮湿条件下颗粒间的黏附力远大于颗粒与膜表面的黏附力，表明颗粒-颗粒的黏附作用可加速颗粒在膜表面的粘附沉积，导致严重的膜污染。

关键词(KeyWords)： 燃煤烟气;颗粒物;CO₂膜吸收;黏附力;原子力显微镜;膜污染

Abstract:

Keywords:

基金项目(Foundation): 江苏省煤基CO₂捕集与地质储存重点实验室开放基金（2016A05）。

作者(Author): 张琳^1,2,孙莹²,杨林军^1,2

DOI: 10.3969/j.issn.1003-9015.2019.01.011

参考文献(References)：

• [1] ZHANG L, QU R, SHA Y, et al. Membrane gas absorption for CO₂ capture from flue gas containing fine particles and gaseous contaminants[J]. International Journal of Greenhouse Gas Control, 2015, 33(33):10-17.
  [2] ZHANG L, LI J, ZHOU L, et al. Fouling of impurities in desulfurized flue gas on hollow fiber membrane absorption for CO₂ capture[J]. Industrial & Engineering Chemistry Research, 2015, 55(29):8002-8010.
  [3] BUFFLE J, LEPPARD G G. Characterization of aquatic colloids and macromolecules. 1. Structure and behavior of colloidal material[J]. Environmental Science & Technology, 1995, 29(9):2169-75.
  [4] ELIMELECH M. Particle deposition and aggregation, measurement, modelling and simulation[J]. Chemical Engineering Journal & the Biochemical Engineering Journal, 1998, 64(3):363-363.
  [5] DUCKER W A, SENDEN T J, PASHLEY R M. Direct measurement of colloidal forces using an atomic force microscope[J]. Nature, 1991, 353(353):239-241.
  [6] BOWEN W R, HILAL N, LOVITT R W, et al. Characterization of membrane surfaces:direct measurement of biological adhesion using an atomic force microscope[J]. Journal of Membrane Science, 1999, 154(2):205-212.
  [7] RICHARD B W, DONEVA T A. Atomic force microscopy studies of membranes:effect of surface roughness on double-layer interactions and particle adhesion[J]. Journal of Colloid & Interface Science, 2000, 229(2):544-549.
  [8] LAMARCHE C Q, LEADLEY S, LIU P, et al. Method of quantifying surface roughness for accurate adhesive force predictions[J]. Chemical Engineering Science, 2016, 158:140-153.
  [9] RABINOVICH Y I, SINGH A, HAHN M, et al. Kinetics of liquid annulus formation and capillary forces[J]. Langmuir the ACS Journal of Surfaces & Colloids, 2011, 27(22):13514-13523.
  [10] RABINOVICH Y I, ADLER J J, ATA A. Adhesion between nanoscale rough surfaces:I. Role of asperity geometry[J]. Journal of Colloid & Interface Science, 2000, 232(1):10-16.
  [11] RABINOVICH Y I, ADLER J J, ATA A, et al. Adhesion between nanoscale rough surfaces[J]. Journal of Colloid & Interface Science, 2000, 232(1):17-24.
  [12] 柳冠青,李水清,姚强. 微生物颗粒与固体表面相互作用的AFM测量[J]. 工程热物理学报, 2009, 30(5):803-806. LIU G Q, LI S Q, YAO Q. AFM measurement of the interaction between a microsized fly ash particle and a substrate[J]. Journal of Engineering Thermophysics. 2009, 30(5):803-806.
  [13] DUCKER W A, SENDEN T J, PASHLEY R M. Measurement of forces in liquids using a force microscope[J]. Langmuir, 1992, 8(7):1831-1836.
  [14] CHEN H, ZHAO C, SHEN P. Effect of steam in flue gas on CO₂ capture for calcium based sorbent[J]. CIESC Journal, 2013, 64(4):1364-1372.
  [15] ATCHARIYAWUT S, FENG C, WANG R, et al. Effect of membrane structure on mass-transfer in the membrane gas-liquid contacting process using microporous PVDF hollow fibers[J]. Journal of Membrane Science, 2006, 285(1-2):272-281.
  [16] FISHER L R, GAMBLE R A, MIDDLEHURST J. The Kelvin equation and the capillary condensation of water[J]. Nature, 1981, 290(5807):575-576.
  [17] 孔明. 颗粒粒径和形态计算机视觉测量方法研究[D]. 南京:东南大学, 2005. KONG M. Investigation on the granularity and sharp of particle by computer vision[D]. Nanjing:Southeast University, 2005
  [18] SEVILLE J P K. Inter-particle forces in fluidization:a review[J]. Powder Technology, 2000, 113(3):261-268.