COS-forming reaction between CO and sulfur: A high-temperature intrinsic kinetics study
Journal Article
·
· Industrial and Engineering Chemistry Research
- Univ. of Calgary, Alberta (Canada). Dept. of Chemical and Petroleum Engineering
Carbonyl sulfide is formed in the front end (i.e., the reaction furnace and the waste heat boiler) of Claus plants which are commonly used to recover sulfur from acid gases. Moreover, COS along with CS{sub 2}, are recognized as the problematic sulfur compounds that contribute significantly to plant sulfur emissions. Further, there is limited kinetic information on the important reaction for the formation of these two compounds. Now, it is well-known that one of the important COS-forming reactions is that between CO and sulfur. In this laboratory, the authors conducted an experimental study to measure the intrinsic kinetics of this homogeneous gas-phase reaction in the temperature range of 600--1150 C and over a residence time of 0.5--2.0 s. The overall reaction was found to be second order with a reaction rate constant k{sub f} = (3.18 {+-} 0.36) {times} 10{sup 5} exp[{minus}(6700 {+-} 108 K)/T] m{sup 3}/(kmol{center_dot}s). In addition, a kinetic model was developed to account for both the COS formation and the COS decomposition reactions. And, finally, for the reverse reaction, the COS decomposition reaction rate constant (k{sub r}) was regressed to match the equilibrium data of experiments at high temperatures giving a second-order reaction rate constant as k{sub r} = (2.18 {+-} 1.12) {times} 10{sup 9} exp[{minus}(21630 {+-} 160 K)/T] m{sup 3}/(kmol{center_dot}s).
- OSTI ID:
- 321075
- Journal Information:
- Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 12 Vol. 37; ISSN IECRED; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
Similar Records
On reaction kinetics for the thermal decomposition of hydrogen sulfide
Kinetics of CO and H atom production from the decomposition of HNCO in shock waves
Direct studies of the thermal decomposition of N sub 2 O and CO sub 2 and of the reaction of CO with O sub 2
Journal Article
·
Sun Jan 31 23:00:00 EST 1999
· AIChE Journal
·
OSTI ID:329249
Kinetics of CO and H atom production from the decomposition of HNCO in shock waves
Journal Article
·
Thu Apr 19 00:00:00 EDT 1990
· Journal of Physical Chemistry; (USA)
·
OSTI ID:6902651
Direct studies of the thermal decomposition of N sub 2 O and CO sub 2 and of the reaction of CO with O sub 2
Conference
·
Tue Dec 31 23:00:00 EST 1991
·
OSTI ID:5421188