高分子树脂吸附—脱附油气性能的研究

发布时间：2018-07-13 14:38

【摘要】：油品从原油开采到成品油销售的输送、加工、储存等过程中,由于油品的挥发性以及开采、冶炼工艺和设备的不完善,造成了油品的蒸发损耗,对环境、人类的健康都有巨大危害。目前广泛采用吸附技术去除油气废气,活性炭是主要的吸附材料,但在实际工业吸附油气时存在疏水性能差、孔道易堵塞、脱附困难、易燃等缺点,而高分子树脂以其大比表面积、大孔容、疏水性好、脱附性能佳等优点,可以有效弥补活性炭在吸附上的不足。本文首先选用三种商用高分子树脂DA-1、DA-2、D8系列树脂,系统考察了树脂对油气及其主要成分的吸附-脱附性能,同时研究了树脂种类、吸附温度、吸附质浓度、水汽对高分子树脂吸附油气性能的影响。实验结果表明,高比表面积、大孔容的DA-1及DA-2树脂对油气及其主要成分有较好的吸附性能,在油气浓度为3141 mg/m3时饱和吸附量分别为0.1383 g/g、0.0733 g/g。由于物理吸附是放热反应,随着吸附温度的提高,树脂的吸附量随之减少;三种高分子树脂的吸附量均随吸附质的浓度的升高而升高;同时与D8树脂相比,孔径较小的DA-1、DA-2树脂的疏水性能较好,水汽对其吸附性能影响不大。论文进一步研究了三种高分子树脂对油气及主要成分正己烷的脱附性能,考察不同的脱附方法、脱附温度对脱附效率的影响,以及高分子树脂的重复吸-脱附实验,来探究树脂的回收再利用情况。实验结果表明,真空脱附法明显优于热脱附法,同时孔径较大的DA-2树脂脱附率明显优于DA-1树脂。随着脱附温度的升高,两种树脂均可以完全脱附,其中真空脱附效率可以在90℃时迅速达到100%。两种树脂在进行四次重复吸脱附实验后,仍能表现出较好的吸附性能,因此可以较好地进行回收再利用。
[Abstract]:In the course of oil production from crude oil production to the transportation, processing and storage of refined oil products, due to the volatility of oil products and the imperfection of smelting technology and equipment, the evaporation loss of oil products is caused to the environment. Human health is a great hazard. At present, adsorption technology is widely used to remove oil and gas waste gas. Activated carbon is the main adsorption material, but it has some disadvantages such as poor hydrophobic performance, easy blockage, difficult desorption, flammability and so on. Because of its large specific surface area, large pore volume, good hydrophobicity and good desorption performance, polymer resin can effectively compensate for the lack of activated carbon in adsorption. In this paper, the adsorption-desorption properties of three kinds of commercial macromolecular resins DA-1C DA-2D8 are investigated systematically, and the kinds of resins, adsorption temperature and adsorbate concentration are also studied. Effect of Water Vapor on adsorption of Oil and Gas by Polymer Resin. The experimental results show that DA-1 and DA-2 resins with high specific surface area and large pore volume have good adsorption properties for oil and gas and their main components. The saturated adsorption capacity of DA-1 and DA-2 resins is 0.1383 g / g, 0.0733 g / g when the concentration of oil and gas is 3141 mg/m3, respectively. As the physical adsorption is an exothermic reaction, the adsorption capacity of the resin decreases with the increase of adsorption temperature, and the adsorption capacity of the three macromolecule resins increases with the increase of the concentration of adsorbate. At the same time, compared with the D8 resin, the adsorption capacity of the resin decreases with the increase of the adsorption temperature. The hydrophobic properties of DA-1 / DA-2 resin with small pore size are better, and the adsorption properties of DA-1 / DA-2 resin are not affected by water vapor. The desorption properties of three kinds of polymer resins on oil and gas and n-hexane were further studied. The different desorption methods, the influence of desorption temperature on desorption efficiency, and the experiment of repeated sorption-desorption of polymer resin were investigated. To explore the recovery and reuse of resin. The experimental results show that the vacuum desorption method is obviously superior to the thermal desorption method, and the desorption rate of DA-2 resin with larger pore size is obviously better than that of DA-1 resin. With the increase of desorption temperature, both resins can be desorbed completely, and the vacuum desorption efficiency can reach 100% at 90 鈩，

本文编号：2119725