Mass Transfer and Liquid-Film Formation in a Spray Tower for SO2 Removal in Sodium Hydroxide Solution

被引：13

作者：

Codolo, Milene Costa ^{[1
]}

Bizzo, Waldir Antonio ^{[2
]}

机构：

[1] Univ Fed Sao Paulo, Dept Chem Engn, 275 Prof Artur Riedel St, BR-09972270 Diadema, SP, Brazil

[2] Univ Estadual Campinas, Fac Mech Engn, Campinas, SP, Brazil

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2016年 / 39卷 / 10期

基金：

巴西圣保罗研究基金会;

关键词：

Absorption; Liquid films; Mass transfer coefficients; SO2; removal; Spray towers; SULFUR-DIOXIDE; DESULFURIZATION; ABSORPTION; MODEL; FLOW; EFFICIENCY;

D O I：

10.1002/ceat.201500389

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Spray towers allow for controlling air pollution in which a liquid is sprayed in small droplets to produce a large interfacial area for mass transfer between a gas and a liquid phase. An experimental study of a spray tower for removing SO2 is described. The experiments were carried out under different operating conditions by varying the gas velocity, liquid flow rate, and SO2 concentration. SO2 removal efficiency, volumetric mass transfer coefficient, and liquid-film formation as a result of the collision of droplets against the tower wall are investigated. Removal efficiency and volumetric mass transfer coefficient are analyzed as a function of gas velocity, liquid flow rate, and SO2 concentration, while liquid-film formation is evaluated as a function of tower height. The results indicate high removal efficiency. Correlations to predict the volumetric mass transfer coefficient are also proposed.

引用

页码：1939 / 1945

页数：7

共 32 条

[1] Critical flow atomizer in SO2 spray scrubbing [J].

Bandyopadhyay, Amitava ;

Biswasa, Manindra Nath .

CHEMICAL ENGINEERING JOURNAL, 2008, 139 (01) :29-41

[2] Modeling the absorption of SO2 in a spray scrubber using the penetration theory [J].

Brogren, C ;

Karlsson, HT .

CHEMICAL ENGINEERING SCIENCE, 1997, 52 (18) :3085-3099

[3] A model for prediction of limestone dissolution in wet flue gas desulfurization applications [J].

Brogren, C ;

Karlsson, HT .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1997, 36 (09) :3889-3897

[4] SO2 ABSORPTION INTO AQUEOUS-SOLUTIONS [J].

CHANG, CS ;

ROCHELLE, GT .

AICHE JOURNAL, 1981, 27 (02) :292-298

[5] Experimental study of the SO2 removal efficiency and volumetric mass transfer coefficients in a pilot-scale multi-nozzle spray tower [J].

Codolo, Milene C. ;

Bizzo, Waldir A. .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2013, 66 :80-89

[6]

Danckwerts F.R.S., 1970, GAS LIQUID REACTIONS, P274

[7]

Eden D, 1998, CHEM ENG TECHNOL, V21, P56, DOI 10.1002/(SICI)1521-4125(199801)21:1<56::AID-CEAT56>3.0.CO

[8]

2-9

[9] A simple realistic modeling of full-scale wet limestone FGD units [J].

Gutierrez Ortiz, F. J. .

CHEMICAL ENGINEERING JOURNAL, 2010, 165 (02) :426-439

[10] Absorption of gases in spray towers [J].

Hixson, AW ;

Scott, CE .

INDUSTRIAL AND ENGINEERING CHEMISTRY, 1935, 27 :307-314

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