喷射鼓泡塔海水脱硫特性

doi:10.11949/j.issn.0438-1157.20151330

摘要/Abstract

摘要：

为探究以海水作为脱硫剂在喷射鼓泡塔上的脱硫特性,通过改变废气流量、海水温度、浸液深度、SO₂进口浓度和O₂浓度等操作参数,在自主设计和搭建的喷射鼓泡塔实验平台上进行了船舶模拟废气的脱硫实验。实验结果表明:在喷射鼓泡塔上,海水对SO₂的吸收容量为3.682 mmol·L^-1,约是去离子水的3.92倍;脱硫效率随废气流量、海水温度和SO₂进口浓度的升高而降低,随浸液深度和O₂浓度的升高而升高,与脱硫时间呈线性下降关系。液相总传质系数随废气流量和海水温度的增加而增加,其中废气流量的影响幅度较小,仅为3.16%。增加O₂浓度可显著提高海水对SO₂的吸收容量,O₂浓度从0%增至12%时,海水的吸收容量从3.682 mmol·L^-1增至7.463 mmol·L^-1。

关键词: 海水, 喷射鼓泡塔, 传质, 反应动力学, 气泡, 脱硫效率

Abstract:

In order to study the desulphurization properties of seawater with jet bubbling reactor, experimental researches on SO₂ removal from simulated marine waste gas were investigated in a self-designed jet bubbling reactor. The parameters influencing desulphurization efficiency, such as waste gas flow, seawater temperature, immersion depth, inlet concentration of SO₂ and O₂, were examined. Results showed that the absorption capacity of seawater scrubbing SO₂was up to 3.682 mmol·L^-1about 3.92 times that of deionized water. The desulphurization efficiency decreased with the increase in waste gas flow, seawater temperature and inlet SO₂ concentration while it increased with increasing immersion depth and inlet O₂ concentration. Desulphurization efficiency reduced linearly over desulphurization time. Increasing waste gas flow can increase total liquid phase mass transfer coefficient by 3.16%, which was less than that of seawater temperature. The absorption capacity increased significantly with increasing inlet O₂concentration. It increased from 3.682 mmol·L^-1 to 7.463 mmol·L^-1 as the inlet O₂ concentration increased from 0% to 12%.

Key words: seawater, jet bubbling reactor, mass transfer, reaction kinetics, bubble, desulphurization efficiency

中图分类号:

X701.3

张清凤, 陈晓平. 喷射鼓泡塔海水脱硫特性[J]. 化工学报, 2016, 67(4): 1572-1579.

ZHANG Qingfeng, CHEN Xiaoping. Desulphurization properties of seawater with jet bubbling reactor[J]. CIESC Journal, 2016, 67(4): 1572-1579.

参考文献 25

[1]	张玉阁. 船舶柴油机废气排放及控制技术[J]. 天津航海, 2009, (2): 22-24. ZHANG Y G. Exhaust emission and control technology of marine diesel engine[J]. Navigation of Tianjin, 2009, (2): 22-24.
[2]	GEORGE P P, EIRINI V S, HARILAOS N P. The possible designation of the Mediterranean sea as a SECA: a case study[J]. Transportation Research Part D, 2014, 28: 74-90.
[3]	杨志忠. 海水烟气脱硫技术及其在电站上的工程应用[J]. 动力工程, 2008, 28 (4): 612-615. YANG Z Z. Seawater flue gas desulphurization technology and its engineering application in power plant[J]. Journal of Power Engineering, 2008, 28 (4): 612-615.
[4]	李红海, 王伟文, 李建隆. 规整填料在海水脱硫中的流体分布与吸收性质性能研究[J]. 现代化工, 2008, 28 (suppl.): 50-54. LI H H, WANG W W, LI J L. Study on fluid distribution and absorption and mass transfer performance of structured packing in seawater desulphurization[J]. Modern Chemical Industry, 2008, 28 (suppl.): 50-54.
[5]	GHAZI A, HISHAM E, HISHAM E D, et al. Solubility of sulfur dioxide in seawater[J]. Industrial and Engineering Chemistry Research, 2001, 40: 1434-1441
[6]	JUAN R S, MANUEL A, MARIA C D, et al. Absorption equilibria of dilute SO2 in seawater[J]. J. Chem. Eng., 2004, 49: 1710-1716.
[7]	GIUSEPPE C, GIUSEPPE L, FRANCESCO M, et al. An experimental investigation on seawater SO2 scrubbing for marine application[J]. Environmental Progress &Sustainable Energy, 2013, 32 (4): 1179-1186.
[8]	ANDERS A, STEFAN M. Use of seawater scrubbing for SO2 removal from marine engine exhaust gas[J]. Energy&Fuels, 2007, 21: 3274-3279.
[9]	马义平, 许乐平, 宿鹏浩, 等. 船舶烟气海水脱硫的模拟和设计[J]. 上海海事大学学报, 2013, 34 (2): 41-45. MA Y P, XU L P, SU P H, et al. Simulation and design of ship flue gas desulphurization using seawater[J]. Journal of Shanghai Maritime University, 2013, 34 (2): 41-45.
[10]	SHIVA D, AMIR R, MOHAMMAD S H, et al. SO2 removal by seawater in a packed-bed tower: experimental study and mathematical modeling[J]. Separation Science and Technology, 2014, 49: 988-998.
[11]	VIDAL B F, OLLERO P, ORTIZ F J G, et al. Catalytic seawater flue gas desulfurization process: an experimental pilot plant study[J]. Environmental Science&Technology, 2007, 41: 7114-7119.
[12]	DOUABUL A, RILEY J. Solubility of sulfur dioxide in distilled water and decarbonated seawater[J]. J. Chem. Eng. Data, 1979, 24: 274-276.
[13]	王慧. 海水烟气脱硫及其动力学研究[D]. 青岛: 中国海洋大学, 2008. WANG H. Flue gas desulfurization and its kinetics using seawater[D]. Qingdao: Ocean University of China, 2008.
[14]	ZHANG J W, BIAN J J, LI C H, et al. Seawater gas desulfurization packing type, salinity and temperature analysis[C]//Engineering Our Future: Are We Up to the Challenge? Australia, 2009: 2388-2393.
[15]	ZHENG Y J, SOREN K, JAN E J. Experimental investigation of a pilot-scale jet bubbling reactor for wet flue gas desulphurisation[J]. Chemical Engineering Science, 2003, 58: 4695-4703.
[16]	罗娅, 林彬. 鼓泡塔与喷淋塔在大型火力发电机组上运行的对比分析[J]. 广东电力, 2007, 20 (4): 68-70. LUO Y, LIN B. Comparative analysis of bubbling tower and spray tower operation for large-capacity thermal power generating units[J]. Guangdong Electric Power, 2007, 20 (4): 68-70.
[17]	何苏浩, 项光明, 姚强, 等. 石灰石/石灰-石膏湿法脱硫几种反应塔的比较[J]. 电力环境保护, 2001, 17 (3): 5-8. HE S J, XIANG G M, YAO Q, et al. Comparison of a few different CaCO3/CaO-CaSO4 wet FGD towers[J]. Electric Power Environmental Protection, 2001, 17 (3): 5-8.
[18]	李锦时, 朱卫兵, 周金哲, 等. 喷雾干燥半干法烟气脱硫效率主要影响因素的实验研究[J]. 化工学报, 2014, 65 (2): 724-730. DOI: 10.3969/j.issn.0438-1157.2014.02.050. LI J S, ZHU W B, ZHOU J Z, et al. Experimental study on factors affecting efficiency of flue gas desulfurization by spray drying wet(semi-dry) process[J]. CIESC Journal, 2014, 65 (2): 724-730. DOI: 10.3969/j.issn.0438-1157.2014.02.050.
[19]	DOU B L, PAN W G, JIN Q. Prediction of SO2 removal efficiency for wet flue gas desulfurization[J]. Energy Conversion and Management, 2009, 50: 2547-2553.
[20]	AKITA K, YOSHIDA F. Gas holdup and volumetric mass transfer coefficient in bubble columns[J]. Ind. Eng. Chem. Process Des. Dev, 1973, 12: 76-80.
[21]	AKITA K, YOSHIDA F. Bubble size, interfacial area and liquid phase mass transfer coefficient in bubble column[J]. Ind. Eng. Chem. Process Des. Dev., 1974, 13: 84-90.
[22]	MONDAL M K. Experimental determination of dissociation constant, Henry's constant, heat of reactions, SO2 absorbed and gas bubble-liquid interfacial area for dilute sulphur dioxide absorption into water[J]. Fluid Phase Equilibria, 2007, 253: 98-107.
[23]	GIUSEPPE C, ANTONIO D N, GIUSEPPE L, et al. Seawater scrubbing desulfurization: a model for SO2 absorption in fall-down droplets[J]. Environmental Progress&Sustainable Energy, 2012, 31: 277-287.
[24]	潘栋. 大型喷射鼓泡塔脱硫装置的运行特性研究[J]. 热力发电, 2010, 40 (6): 100-102. PAN D. Study on operation behavior of FGD system with jet bubbling tower[J]. Thermal Power Generation, 2010, 40 (6): 100-102.
[25]	TIAN L, ZHANG X W, YU Q N, et al. Study on the relationship between absorbed S(IV) and pH in the seawater flue gas desulfurization process[J]. Industrial & Engineering Chemistry Research, 2012, 51: 4478-4484.