甘孜地热井结垢分析及防垢对策
收稿日期: 2015-03-23
修回日期: 2015-04-14
网络出版日期: 2015-06-30
基金资助
甘孜地区地热发电技术研究项目（10500000-14-ZC0607-0005）；
国家863计划项目（2012AA053003）
Received date: 2015-03-23
Revised date: 2015-04-14
Online published: 2015-06-30
王延欣 , 刘世良 , 边庆玉 , 鄢 斌 , 刘学峰 , 刘金侠 , 王海燕 , 卜宪标 . 甘孜地热井结垢分析及防垢对策[J]. 新能源进展, 2015 , 3(3) : 202 -206 . DOI: 10.3969/j.issn.2095-560X.2015.03.007
Scaling is one of the most important problems in the geothermal utilization, and it has an important effect on the plant optimization design and safety operation. A well in Ganzi is selected as the study subject, whose water sample is analyzed during choke. The trend of corrosion and scaling is judged with the methods of Ryzner index (RI) and Larson index (LI), and the component of scaling is analyzed by XRD. The scaling reason and countermeasures for anti-scale are pointed out. The result shows that RI and LI is respectively 5.58 and 0.19, indicating a medium scaling degree. The component of scaling is CaCO3, whose precipitate is caused by CO2 escaping from geothermal water due to the reduction of pressure. The chemical washing well and filling inhibitor are selected as the countermeasures for anti-scale.
Key words： Geothermal; scaling; anti-scale; inhibitor
[1] DiPippo R, Renner J L. Future Energy (Second Edition)[M]. Oxford: Elsevier, 2014. 471-492.
[2] Bertani R. Geothermal Power Generation in the World 2010-2014 Update Report[C]. Proceedings World Geothermal Congress 2015, Melbourne, Australia, 19-25, April, 2015.
[3] Kizito M O. Corrosive species and scaling in wells at Olkaria, Kenya and Reykjanes, Svartsengi and Nesjavellir, Iceland[D]. Iceland, United Nations University Geothermal Training Programme Reykjavík, 2007.
[4] Mundhenk N, Huttenloch P, Sanjuan B, et al. Corrosion and scaling as interrelated phenomena in an operating geothermal power plant[J]. Corrosion Science, 2013, 70: 17-28.
[5] Ozawa T, Fujii Y. A Phenomenon of Scaling in Production Wells and the Geothermal Power Plant in the Matsukawa Area[J]. Geothermics, 1970, 2: 1613-1618.
[6] 周大吉. 西藏羊八井地热发电站的运行、问题及对策[J]. 电力建设, 2003, 24(10): 1-3.
[7] Patzay G, Karman F H, Pota G Preliminary investigations of scaling and corrosion in high enthalpy geothermal wells in Hungary[J]. Geothermics, 2003, 32: 627-638.
[8] Satman A, Ugur Z, Onur M. The effect of calcite deposition on geothermal well inflow performance[J]. Geothermics, 1999, 28(3): 425-444.
[9] Reed M J. Thermodynamic calculations of calcium carbonate scaling in geothermal wells, dixie valley geothermal field, U.S.A[J]. Geothermics, 1989, 18: 269-277.
[10] 赵平, 金建, 张海政, 等. 西藏羊八井地热田热水的化学组成[J]. 地质科学, 1998, 33(1): 61-72.
[11] 朱家玲, 姚涛. 地热水腐蚀结垢趋势的判断和计算[J]. 工业用水与废水, 2004, 35(2): 23-25.
[12] 孟宪级, 白丽萍, 齐金生. 地热水结垢趋势的判断[J]. 工业水处理, 1997, 17(5): 6-7, 45.
[13] 韦梅华, 田廷山, 孙燕冬, 等. 四川省康定地区地热水结垢趋势分析[J]. 水文地质工程地质, 2012, 39(5): 132-138.
[14] 蔡义汉. 地热直接利用[M]. 天津: 天津大学出版社, 2004.
[15] 杨东方, 唐令龙. 西藏地热井除垢[J]. 四川电力技术, 1995, 18(4): 8-10.
[16] Siega F L, Herras E B, Buning B C. Calcite scale inhibition: The Case of Mahanagdong Wells in Leyte Geothermal Production Field, Philippines. Proceedings World Geothermal Congress 2005. Turkey, Antalya 2005.
[17] Daco-ag L M, Belas-Dacillo K A. Experiences with different calcite inhibitor in the Mahanagdong geothermal field[C]. Proceedings World Geothermal Congress 2010. Indonesia, Bali 2010.
[18] Benoit W R. Development of a carbonate scale inhibition program at Dixie Valley, Nevada[J]. Geothermal Resources Council Transactions, 1990, 14: 1567-1573.
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