基于离子交换的乙二醇富液脱盐实验研究

为简化深水气田乙二醇回收系统,采用离子交换工艺替代常规乙二醇脱盐工艺,对乙二醇吸附脱盐进行实验研究.通过静态吸附脱盐实验,在含盐乙二醇富液体系中对4种离子交换树脂进行了筛选,并对筛选出的树脂进行了吸附热力学研究.根据吸附能力,筛选出D113阳离子交换树脂和D201阴离子交换树脂用于实验,阴阳树脂体积比例为2:1时上清液...     

乙二醇脱盐的离子交换树脂电再生实验研究

为简化深水气田乙二醇回收系统,使离子交换技术代替现有乙二醇脱盐工艺,提出了一种离子交换树脂电再生方法。通过布置在树脂床两侧的电极提供电场,在水流中发生电极反应与水解离,产生的H⁺和OH^-使饱和树脂再生。与现有的电再生方法相比,该方法再生条件较简单,对于空间、淡水十分有限的海上平台更具适用性。实验结果表明,在74 V内对混床电再生1 h后,可脱除5.46 BV模拟乙二醇富液中31.26%的NaCl,离子交换树脂得到有效再生。重复脱盐-再生实验15个周期后,树脂性能仍保持良好。     

乙二醇溶液脱盐工艺应用现状及进展

介绍了目前乙二醇溶液脱盐工艺应用现状和脱盐原理,总结了常规脱盐工艺和离子交换法脱盐工艺的优缺点及研究进展。与乙二醇溶液常规脱盐工艺相比,离子交换法脱盐工艺是乙二醇溶液脱盐工艺研究与应用的新方向。在今后的研究中,应对乙二醇吸附脱盐的热力学与动力学、研制适合乙二醇脱盐体系的离子交换树脂、解决凝析油对离子交换树脂带来的污染问题等方面进行研究。     

乙二醇溶液脱盐工艺应用现状及进展

介绍了目前乙二醇溶液脱盐工艺应用现状和脱盐原理,总结了常规脱盐工艺和离子交换法脱盐工艺的优缺点及研究进展。与乙二醇溶液常规脱盐工艺相比,离子交换法脱盐工艺是乙二醇溶液脱盐工艺研究与应用的新方向。在今后的研究中,应对乙二醇吸附脱盐的热力学与动力学、研制适合乙二醇脱盐体系的离子交换树脂、解决凝析油对离子交换树脂带来的污染问题等方面进行研究。     

离子交换树脂在有机溶剂中的脱盐行为研究

The desalting property of ion-exchange resins in organic solvent is reported by using potassium acetate as a model compound. The experimental results show that the solvability of the solvent, stirring speed, and temperature are the factors which influence the ion-exchange rate. The increase of solvability, stirring speed and temperature will speed up the ion-exchange process.     

离子交换脱盐系统的扩容降耗改造

湖北化肥厂顺流再生离子交换系统改造对流再生服动床离子交换系统后，技术经济效益显著，除盐水产量提高了约６０％，制水成本由原来的１．２１元／ｔ降至０．３８５元／ｔ。     

脱盐工艺离子交换树脂再生技术的探讨

探讨了在一定工艺条件下,再生剂用量、浓度、流出时间、温度对离了交换树脂再生状况的影响。     

含盐乙二醇溶液电渗析脱盐工艺研究

针对陆域油气体开采过程中产生的乙二醇盐溶液,设计了处理规模为100 L/h的3级串联电渗析连续化脱盐工艺,在不同操作电压条件下分析了系统脱盐率、能耗、乙二醇损失率以及各级电渗析脱盐率的变化特性。结果表明,操作电压为80 V时,脱盐率可达到90%,能耗仅为0.792 kW·h/m3,此时乙二醇损失率为0.51%。操作过程中当前2级电渗析以较大操作电压运行时,可通过适当降低第3级电渗析的操作电压以减少能耗。     

使用脱盐单元对富乙二醇脱水再生的创新方法开发及应用

天然气处理接收平台配置有1套乙二醇回收装置,用于对水下返回的富乙二醇进行回收处理。该装置由脱水、脱盐、闪蒸等4个单元组成,其中重沸器为脱水单元的关键设备。运行期间重沸器A、B相继发生内漏,使得脱水单元停用,无法生产合格的乙二醇,直接导致水下气田停产。在研究乙二醇再生系统各单元工作原理的基础上,提出了一系列的工艺流程创新改造方案,保证了重沸器故障期间连续生产出合格的乙二醇。     

An apparatus for desalination with ion exchange resins

This paper describes an apparatus in which desalination was achieved on ion-exchange resins by periodic change in temperature synchronized with an alternation in the course of liquid flow. Experiments showed that higher separation can be obtained with an increase in temperature difference, pressure, rate of liquid flow or resin-to-liquid ratio.     

Studies on integration of ion exchange and nanofiltration for water desalination

This work addresses an integrated treatment to produce drinking water involving the ion exchange (IEX) and nanofiltration processes. In the first stage, the experimental procedure consisted of evaluating the IEX equilibrium and the dynamics of fixed-bed saturation/regenerations, for the system Cl^?/SO₄², using an anionic resin, Purolite A850, in the form sulphate. A mathematical model which considers axial dispersion for the liquid phase and linear driving force for intraparticle mass transfer predicted well the breakthrough curves of Cl^? and SO₄^2?. In the second stage, the selective separation of Cl^?, Na⁺ and SO₄^2? ions through a flat membrane nanofiltration TS80 was assessed.     

Pd催化剂上乙二醇加氢提高紫外透光率的研究

采用Pd催化剂开展乙二醇加氢精制提高产品紫外透光率的研究.考察精制过程中反应温度、反应压力、空速和氢醇物质的量比等因素对乙二醇紫外透光率的影响.研究结果表明,在反应温度(50～80)℃、反应压力(0.5～0.6)MPa、体积空速(3～8)h-1和氢醇物质的量比0.03～0.05条件下,可将原料乙二醇220 nm、275...     

热泵式海水淡化系统实验研究

本文将蒸发式冷凝器应用到热泵式海水淡化装置中，构建了新的系统，并测试该海水淡化装置的性能。在其他参数不变的情况下，研究海水入口温度、海水喷淋量、蒸发式冷凝器侧出口湿球温度对淡水产量的影响，从而为热泵式海水淡化装置的设计提供参考。     

The effect of monoethylene glycol on the stability of water-in-oil emulsions

It is important from both a strategic and economic standpoint to study the mechanism of formation of water/oil emulsions, to predict their increase of viscosity with respect to that of the crude oil, and to obtain information about the stability vs separation of these substances (since their presence can impair oil processing and distribution). The objective of this work was to ascertain the influence of monoethylene glycol (MEG) on these parameters and its action mechanism. The addition of MEG in different proportions in the oil emulsions significantly changed the flow curve of the emulsion, passing from a quasi-Newtonian one to a shear thinning behaviour. Besides this, when MEG was present at low concentrations, the demulsification process was slow and an increase in concentration made the emulsions more stable than samples containing the same aqueous phase proportion. Under the conditions studied, the addition of MEG did not reduce the quantity of the aqueous phase separated compared to the emulsions free of MEG, but significantly delayed the demulsification process. Rheology provided important information regarding the phase separation process of the aqueous phase in oil phase emulsions, and dynamic testing suggested that the most relevant effect of the addition of MEG is an increase of the emulsion elasticity that can be correlated with the increase in the emulsion stability observed by bottle test and Turbiscan.     

离子交换法去除1,3-丙二醇发酵液中盐的研究

通过动态脱盐实验,研究了不同离子交换树脂对1,3-丙二醇发酵液的脱盐性能。实验结果表明,采用D001和732阳离子树脂脱盐时发酵液的最佳流速分别为40,60 m L/min,D001阳离子树脂对发酵液的处理效果较好;D315阴离子树脂和D363阴离子树脂的最佳流速均为40 m L/min。树脂再生实验发现D363阴离子树脂消耗较少的氢氧化钠溶液。     

离子交换法去除1,3-丙二醇发酵液中盐的研究

通过动态脱盐实验,研究了不同离子交换树脂对1,3-丙二醇发酵液的脱盐性能。实验结果表明,采用D001和732阳离子树脂脱盐时发酵液的最佳流速分别为40,60 m L/min,D001阳离子树脂对发酵液的处理效果较好;D315阴离子树脂和D363阴离子树脂的最佳流速均为40 m L/min。树脂再生实验发现D363阴离子树脂消耗较少的氢氧化钠溶液。     

高温离子交换树脂筛选实验研究

主要研究并比较了经初选的D001等9种型号树脂在高温条件下的耐温静态吸附性能。实验参数为:树脂取湿式体积5mL,10mL,15mL,20mL;料液定体积500mL;料液成分视不同类型树脂及交换任务分别配入相应元素Na+,SiO2,Cl-;恒温控制(80±1)℃;磁力搅拌3h。还考察了D201树脂作错流离子交换剂时对SiO2的吸附率。实验结果为某厂节水节能技改项目树脂的筛选和工艺流程,提供了重要的技术参数和指导性结论。