碘硫循环中Bunsen反应液-液相分离影响因素的实验研究

于明锐; 韩伟实; 王戈

doi:10.7538/yzk.2012.46.suppl.0097

碘硫循环中Bunsen反应液-液相分离影响因素的实验研究

哈尔滨工程大学核科学与技术学院,黑龙江哈尔滨150001

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Experimental Study on Influence Factors of Liquid-Liquid Phase Separation in Bunsen Reaction of I-S Cycle

College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, China

摘要

摘要: Bunsen反应液-液相分离是整个碘硫循环的枢纽，H₂SO₄相与HI_x相分离效果直接影响整个循环系统的热效率。为提高两相分离效果和循环效率，对Bunsen反应平衡时液液相分离特性进行研究。配制H₂SO₄、HI、I₂、H₂O混合溶液，研究实验条件对溶液分离效果的影响。研究结果表明，当n(H₂O)/n(H₂SO₄)小于18时，分层所需碘量随温度变化不大，之后随着溶液温度升高和水量增大，分层所需碘量明显增加；在提升温度和增加碘量的同时减小水量可有效提高溶液分离效果；增大水量可减小副反应进行程度，随着温度升高，抑制作用越明显。通过实验研究最终得到较好的分离条件。

关键词:
核能制氢 ,

Bunsen反应 ,

分离特性
Abstract: The Bunsen reaction liquid-liquid phase separation is an important part for the iodine-sulfur cycle, and the separation effect of sulfuric acid and hydroiodic acid directly affects the thermal efficiency of the whole cyclic system. To improve the separation effect and thermal efficiency, the characteristics of liquid-liquid phase separation when the Bunsen reaction is equilibrium were investigated. The mixture solution including sulfuric acid, hydroiodic acid, iodine and water was prepared, and the influence of different-experimental conditions on the liquid-liquid phase separation effect was investigated. The experimental results show that the excess iodine content for the liquid-liquid phase separation changes little when the mole ratio of water to sulfuric acid is less than 18, and then the excess iodine increases obviously with temperature and excess water in the feed. Reducing the excess water, at the same time increasing the temperature and the excess iodine in the feed can effectively improve separation effect of the solution. Increasing the excess water can also inhibit the side reaction, as the temperature increasing, inhibitory effect is more and more obvious. Through the experimental study, ideal separation conditions were got.

Keywords:
nuclear hydrogen production ,

Bunsen reaction ,

separation characteristic

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参考文献(8)

[1] 顾忠茂. 氢能利用与核能制氢开发综述[J]. 原子能科学技术，2006，40（1）：30-35.GU Zhongmao. Summary of research and development of hydrogen energy utilization and hydrogen production by nuclear energy[J]. Atomic Energy Science and Technology, 2006, 40(1): 30-35(in Chinese).

[2] ELDER R, ALLEN R. Nuclear heat for hydrogen production: Coupling a very high/high temperature reactor to a hydrogen production plant[J]. Progress in Nuclear Energy, 2009, 51(3): 500-525.

[3] YAMAWAKI M, NISHIHARA T, INAGAKI Y, et al. Application of nuclear energy for environmentally friendly hydrogen generation[J]. International Journal of Hydrogen Energy, 2007, 32(14): 2719-2725.

[4] LEE B J, NO H C, YOON H J, et al. An optimal operating window for the Bunsen process in the I-S thermochemical cycle[J]. International Journal of Hydrogen Energy, 2008, 33(9): 2200-2210.

[5] HADJ KALI M K, GERBAUD V, LOVERA P, et al. Bunsen section thermodynamic model for hydrogen production by the sulfur-iodine cycle[J]. International Journal of Hydrogen Energy, 2009, 34(16): 6625-6635.

[6] 白莹，张平，曲永水. 热化学碘硫循环中Bunsen反应[J]. 应用化学，2009，26（3）：292-296.BAI Ying, ZHANG Ping, QU Yongshui. Bunsen reaction in thermochemical iodine-sulfur cycle[J]. Chinese Journal of Applied Chemistry, 2009, 26(3): 292-296(in Chinese).

[7] SAKURAI M, NAKAJIMA H, ONUKI, et al. Investigation of two liquid phase separation characteristics on the iodine-sulfur thermo chemical hydrogen production process[J]. International Journal of Hydrogen Energy, 2000, 25(7): 605-611.

[8] GIACONIA A, CAPUTO G, CEROLI A, et al. Experimental study of two phase separation in the Bunsen section of the sulfur-iodine thermo chemical cycle[J]. International Journal of Hydrogen Energy, 2007, 32(5): 531-536.

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文章访问数: 558

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PDF下载量: 1033

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刊出日期: 2012-09-19

目录

摘要
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[1]	顾忠茂. 氢能利用与核能制氢开发综述[J]. 原子能科学技术，2006，40（1）：30-35.GU Zhongmao. Summary of research and development of hydrogen energy utilization and hydrogen production by nuclear energy[J]. Atomic Energy Science and Technology, 2006, 40(1): 30-35(in Chinese).
[2]	ELDER R, ALLEN R. Nuclear heat for hydrogen production: Coupling a very high/high temperature reactor to a hydrogen production plant[J]. Progress in Nuclear Energy, 2009, 51(3): 500-525.
[3]	YAMAWAKI M, NISHIHARA T, INAGAKI Y, et al. Application of nuclear energy for environmentally friendly hydrogen generation[J]. International Journal of Hydrogen Energy, 2007, 32(14): 2719-2725.
[4]	LEE B J, NO H C, YOON H J, et al. An optimal operating window for the Bunsen process in the I-S thermochemical cycle[J]. International Journal of Hydrogen Energy, 2008, 33(9): 2200-2210.
[5]	HADJ KALI M K, GERBAUD V, LOVERA P, et al. Bunsen section thermodynamic model for hydrogen production by the sulfur-iodine cycle[J]. International Journal of Hydrogen Energy, 2009, 34(16): 6625-6635.
[6]	白莹，张平，曲永水. 热化学碘硫循环中Bunsen反应[J]. 应用化学，2009，26（3）：292-296.BAI Ying, ZHANG Ping, QU Yongshui. Bunsen reaction in thermochemical iodine-sulfur cycle[J]. Chinese Journal of Applied Chemistry, 2009, 26(3): 292-296(in Chinese).
[7]	SAKURAI M, NAKAJIMA H, ONUKI, et al. Investigation of two liquid phase separation characteristics on the iodine-sulfur thermo chemical hydrogen production process[J]. International Journal of Hydrogen Energy, 2000, 25(7): 605-611.
[8]	GIACONIA A, CAPUTO G, CEROLI A, et al. Experimental study of two phase separation in the Bunsen section of the sulfur-iodine thermo chemical cycle[J]. International Journal of Hydrogen Energy, 2007, 32(5): 531-536.