THE KINETICS OF THE PHOTOLYTIC PRODUCTION OF AEROSOLS FROM SO2 AND NH3 IN HUMID AIR

被引：15

作者：

CHRISTENSEN, PS ^{[1
]}

WEDEL, S ^{[1
]}

LIVBJERG, H ^{[1
]}

机构：

[1] TECH UNIV DENMARK,DEPT CHEM ENGN,DK-2800 LYNGBY,DENMARK

来源：

CHEMICAL ENGINEERING SCIENCE | 1994年 / 49卷 / 24A期

关键词：

D O I：

10.1016/S0009-2509(05)80044-2

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The reaction of SO2 and NH3 in humid air to produce an aerosol of ammonium sulfate is studied in a photolytic laboratory reactor. The reaction is shown to be controlled by ultraviolet irradiation in the wavelength range of 240-330 nm and is initiated by excitation of SO2. It is found that NH3 has a strong catalytic effect on the photolytic oxidation of SO2 and surprisingly high values of the quantum yield are observed with NH3 concentration in the range of 20-400 ppm. The reaction rate increases with decreasing temperature. An overall mechanism for the formation of aerosol particles is proposed. It is concluded that aerosol formation due to sunlight photolysis by this mechanism explains the high-opacity smoke formed in industrial stack plumes with small amounts of NH3 and SO2.

引用

页码：4605 / 4614

页数：10

共 18 条

[1] PARTICLE FORMATION BY NH3-SO2 REACTIONS AT TRACE WATER CONDITIONS [J].

BAI, HL ;

BISWAS, P ;

KEENER, TC .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1992, 31 (01) :88-94

[2] EVALUATED KINETIC AND PHOTOCHEMICAL DATA FOR ATMOSPHERIC CHEMISTRY [J].

BAULCH, DL ;

COX, RA ;

HAMPSON, RF ;

KERR, JA ;

TROE, J ;

WATSON, RT .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1980, 9 (02) :295-471

[3] MECHANISM OF HOMOGENEOUS OXIDATION OF SULFUR-DIOXIDE IN TROPOSPHERE [J].

CALVERT, JG ;

SU, F ;

BOTTENHEIM, JW ;

STRAUSZ, OP .

ATMOSPHERIC ENVIRONMENT, 1978, 12 (1-3) :197-226

[4]

CHRISTENSEN PS, 1992, J AEROSOL SCI, V23, pS261

[5]

CHRISTENSEN PS, 1994, THESIS U DENMARK

[6]

DEILLINGER B, 1980, ENVIRON SCI TECHNOL, V14, P1244

[7] PHOTOOXIDATION OF SO32- IN AQUEOUS-SOLUTION [J].

DEISTER, U ;

WARNECK, P .

JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (05) :2191-2198

[8] TEMPERATURE-DEPENDENCE OF THE EQUILIBRIUM CH2(OH)2 + HSO3- = CH2(OH)SO3- + H2O IN AQUEOUS-SOLUTION [J].

DEISTER, U ;

NEEB, R ;

HELAS, G ;

WARNECK, P .

JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (14) :3213-3217

[9] SULFUR-DIOXIDE REACTIONS WITH AMMONIA IN HUMID AIR [J].

HARTLEY, EM ;

MATTESON, MJ .

INDUSTRIAL & ENGINEERING CHEMISTRY FUNDAMENTALS, 1975, 14 (01) :67-72

[10]

JOHNSTONE HF, 1952, IND ENG CHEM, V27, P587

← 1 2 →