EXPERIMENTAL STUDY ON VACUUM PRESSURE SWING ADSORPTION OF LOW CONCENTRATION COAL-BED METHANE IN TWIN TOWERS
-
摘要: 我国低浓度煤层气资源丰富,但利用率低,且大部分直接排放到环境中,不仅造成了资源浪费,也加重了大气温室效应,因此,对低浓度煤层气进行变压吸附富集分离研究具有节能和环保的双重意义。采用双塔真空变压吸附装置进行低浓度煤层气变压吸附富集分离的研究,实验采用活性炭和碳分子筛混合吸附剂,考察了吸附压力、半周期、吸附塔高径比和混合吸附剂配比等参数对CH4分离效果的影响,并确定了最优工艺条件分别为180 kPa、90 s、7和2。该研究结果可为低浓度煤层气资源化利用提供参考。Abstract: Low concentration coal-bed gas resources are rich in China, but the utilization rate is low, and most of it is directly emitted into the environment, not only caused the waste of resources, also increased atmospheric greenhouse effect. Therefore, the study on enrichment and separation of low-concentration coal-bed gas by pressure-swing adsorption (PSA) technology has the dual function of energy saving and environmental protection. In this paper, the dual-tower vacuum PSA device was used, and the adsorbent in the experiment was activated carbon and carbon molecular sieve mixing adsorbent. The influence of adsorption pressure, half-period, adsorption tower height diameter ratio and mixed adsorbent ratio on the separation effect of CH4 were investigated, and the optimal process conditions were determined as follows:180 kPa, 90 s, 7 and 2, namely. The results could provide technical support for the resource utilization of low concentration coal-bed gas.
-
Key words:
- low concentration /
- coal-bed methane /
- activated carbon /
- optimization /
- process condition
-
YANG M. Climate change and energy policies, coal and coalmine methane in China[J]. Energy Policy, 2009, 37(8): 2858-2869. 杨礼荣,竹涛,高庆先. 我国典型非二氧化碳类温室气体减排技术及对策[M]. 北京:中国环境出版社, 2014. 杜双杰. 煤矿乏风瓦斯高效吸附剂的实验研究[D]. 北京:中国矿业大学(北京), 2015. LI X S, CAI J, CHEN Z Y, et al. Hydrate-based methane separation from the drainage coal-bed methane with tetrahydrofuran solution in the presence of sodium dodecyl sulfate[J]. Energy and Fuels, 2012, 26(2): 1144-1151. 竹涛,夏妮,和娴娴,等. 煤矿乏风瓦斯富集分离技术研究进展与应用[J]. 洁净煤技术, 2015, 12(6): 95-100. HUANG Y, PAUL D R. Effect of film thickness on the gas-permeation characteristics of glassy polymer membranes[J]. Industrial and Engineering Chemistry Research, 2007, 46(8): 2342-2347. 竹涛,刘恩彤,景伟东. 改性活性炭表面特性及其对甲烷吸附性能的影响[J]. 矿业安全与环保, 2017, 44(2): 7-11. KHUNPOLGRANG J, YOSANTEA S, KONGNOO A, et al. Alternative PSA process cycle with combined vacuum regeneration and nitrogen purging for CH4/CO2 separation[J]. Fuel, 2015, 140: 171-177. 刘应书,张二林,杨雄,等. 含氧煤层气在碳分子筛上的吸附动力学[J]. 煤炭学报, 2016, 41(4):864-870. 夏妮. 变压吸附技术富集分离煤矿乏风瓦斯的仿真实验研究[D]. 北京:中国矿业大学(北京), 2016. 竹涛,陈锐,和娴娴,等. 变压吸附法分离富集乏风瓦斯的实验研究[J]. 煤矿安全, 2015, 46(9): 1-4. 期刊类型引用(10)
1. 黎媛萍,邹斌,贾舜尧,陈鹏宇,朱晨阳,刘政伟,周天运,赵一,朱梨. 污泥基生物炭的制备及其在环境污染治理中的应用. 湖南城市学院学报(自然科学版). 2024(01): 68-73 . 百度学术
2. 杨阿明,雷程,朱学峰. 氧化法对污泥厌氧消化处理影响的研究进展. 净水技术. 2024(11): 19-28+77 . 百度学术
3. 由明超,宋雪英,张旭,张慧钰,魏建兵,赵晓旭. 市政污泥好氧堆肥过程中多环芳烃的去除研究进展. 生态科学. 2024(06): 200-207 . 百度学术
4. 廖杰,谢威,刘超翔,范洪勇. 初始碱度和温度对养猪废水厌氧发酵过程的影响特征. 环境工程. 2023(02): 53-59+65 . 本站查看
5. 陈林峰,朱凌君,李芳芹,朱群志. 污泥掺烧方式对燃煤锅炉燃烧影响的模拟研究. 热能动力工程. 2023(10): 122-129 . 百度学术
6. 张进,韩佳琳,夏宏蕾,刘万鹏,王敏艳. 市政污泥热解炭化处理及产物利用研究进展. 给水排水. 2023(S2): 460-466+471 . 百度学术
7. 张路,刘再杰,蒋佳承. PET微纤维对污泥厌氧消化和胞内抗性基因的影响. 广东化工. 2022(08): 115-117 . 百度学术
8. 张超,余浩峰,唐丹丹,马睿,陈颖,周阳,王坤. 城市污泥堆肥过程中四环素类抗生素消减研究进展. 山东化工. 2022(13): 54-58 . 百度学术
9. 刘亚利,张宏伟,康晓荣. 微塑料对污泥厌氧消化的影响和机理. 化工进展. 2022(09): 5037-5046 . 百度学术
10. 谢细竹,宋书巧,陈冠海. 市政污泥好氧堆肥研究进展. 大众科技. 2022(10): 40-44 . 百度学术
其他类型引用(8)
-

计量
- 文章访问数: 171
- HTML全文浏览量: 13
- PDF下载量: 3
- 被引次数: 18