| 微通道反应器内硫酸钡沉积行为 |
| |
| 引用本文： | 张宝丹,杨贝,杨索和,苏明月,何广湘,郭晓燕,靳海波. 微通道反应器内硫酸钡沉积行为[J]. 化工学报, 2018, 69(4): 1461-1468. DOI: 10.11949/j.issn.0438-1157.20171257 |
| |
| 作者姓名： | 张宝丹 杨贝 杨索和 苏明月 何广湘 郭晓燕 靳海波 |
| |
| 作者单位： | 1. 北京石油化工学院化学工程学院, 燃料清洁化及高效催化减排技术北京市重点实验室, 北京 102617;2. 中冶京诚工程技术有限公司, 北京 100176;3. 西北大学化学工程学院, 陕西 西安 710069 |
| |
| 基金项目： | 国家自然科学基金项目（91634101）；北京市属高校高水平教师队伍建设支持计划-高水平创新团队建设计划项目（IDHT20180508）。 |
| |
| 摘 要： | 硫酸钡是石油生产过程中经常遇到的难以清除的垢。在微通道反应器内对硫酸钡沉积行为进行较详细的研究。采用火焰原子吸收法和压差法分别测量钡浓度变化和微通道管段间的压力变化，考察微通道管长、流量、浓度及温度等因素对模拟油田水在微通道反应器内硫酸钡沉积行为的影响。实验结果表明，随着管路增长、流量增大、浓度增加，微通道中硫酸钡的沉积速率加快，沉积量增多，且呈非线性增加趋势，而温度升高使得微通道管路中离子扩散加快，硫酸钡沉积速率增大，但由于温度的小幅度升高并没有使硫酸钡溶度积发生明显变化，因此硫酸钡沉积量增加较少。采用扫描电镜观察管道内进出口处硫酸钡的结垢形态，验证了不同因素对管路沉积情况和结晶形态的变化。研究得出受结晶成核的影响，管道内硫酸钡的沉积结垢并非均匀简单的沉积过程，其晶粒形成可分为两个阶段，即成核阶段和晶体生长阶段。
|
| 关 键 词： | 微通道 硫酸钡 结晶 成核 沉积 |
| 收稿时间： | 2017-09-14 |
| 修稿时间： | 2017-12-19 |
Deposition behavior of barium sulfate in microchannel reactors |
| |
| ZHANG Baodan,YANG Bei,YANG Suohe,SU Mingyue,HE Guangxiang,GUO Xiaoyan,JIN Haibo. Deposition behavior of barium sulfate in microchannel reactors[J]. Journal of Chemical Industry and Engineering(China), 2018, 69(4): 1461-1468. DOI: 10.11949/j.issn.0438-1157.20171257 |
| |
| Authors: | ZHANG Baodan YANG Bei YANG Suohe SU Mingyue HE Guangxiang GUO Xiaoyan JIN Haibo |
| |
| Affiliation: | 1. Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China;2. China Metallurgical Engineering Technology Co. LTD., Beijing 100176, China;3. College of Chemical Engineering, Northwest University, Xi'an 710069, Shaanxi, China |
| |
| Abstract: | Fouling of barium sulfate is often observed and difficult to clean up in the process of petroleum production. Barium sulfate deposition of simulated oilfield water in the microchannel reactor was studied by varying tube length, flow rate, concentration and temperature. Barium concentration and pressure drop in each microchannel section were obtained by flame atomic absorption and differential pressure method, respectively. The results show that the rate and amount of barium sulfate deposition in the microchannel increased with increase of tube length, flow rate, and concentration, which deposition rate was increased nonlinearly. With temperature increase, ion diffusion in the microchannel accelerated and deposition rate of barium sulfate increased. However, a slight rise of temperature did not change concentration of barium sulfate significantly and hence deposition amount of barium sulfate was increased very little. SEM morphology of barium sulfate in both inlet and outlet verified impacts of different factors on deposition and crystallization in the microchannel. Deposition of barium sulfate in pipeline is not just a simple homogeneous sedimentary process, as a result of influence of crystal nucleation. The barium sulfate crystal formation has two regular stages of nucleation and crystal growth. |
| |
| Keywords: | microchannel barium sulfate crystallization nucleation deposition |
|
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载免费的PDF全文 |
|
