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THERMAL RUNAWAY PREVENTION IN CATALYTIC PACKED BED REACTOR BY SOLID TEMPERATURE MEASUREMENT AND CONTROL
Korean Journal of Chemical Engineering, October 1993, 10(4), 195-202(8), 10.1007/BF02705267
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Abstract
Magnetic crystallite thermometry has been used to measure the average nickel crystallite temperature in packed bed reactors during ethane hydrogenolysis, an exothermic reaction. The technique is based on the temperature dependence of the magnetic moment of dispersed nickel catalysts. Measurement of the average catalyst temperature is very useful for reactor control because of its shorter time constant compared with exit fluid temperature. Bed temperature control based on the exit fluid temperature, which has often been used as a control variable, is too slow to protect thermal runaway of the bed. The advantage of short time constant by measuring the average catalyst temperature has been incorporated with enhanced feedback control system to control the bed temperature and prevent the thermal runaway of the catalyst bed. An enhanced feedback control structure with supervisory action performed better than the classical proportional-integral control in runaway prevention when the two control schemes were compared with each other on the basis of the trip-point(incipient thermal runaway).
References
Giger GK, Mutharasan R, Coughanowr DR, Ind. Eng. Chem. Fundam., 19, 389 (1980)
Froment CF, Bischoff KB, "Chemical Reactor Analysis and Design," John Wiley and Sons, NY (1979)
Satterfield CN, "Heterogeneous Catalysis in Practice," McGraw-Hill, NY (1980)
Morbidelli M, Varma A, AIChE J., 32(2), 297 (1986)
Cho CK, Ph.D. Dissertation, Arizona State University, Tempe, AZ (1990)
Barkelew CH, Chem. Eng. Prog., 55(25), 37 (1959)
McGreavy C, Adderley CI, Chem. Eng. Sci., 28, 577 (1973)
Kardos PW, Stevens WF, AIChE J., 17(5), 1090 (1971)
Silva JM, Wallman PH, Foss AS, Ind. Eng. Chem. Fundam., 18(4), 383 (1979)
Cale TS, J. Catal., 90(1), 40 (1984)
Ludlow DK, Ph.D. Thesis, Arizona State University, Tempe, AZ (1986)
Emig G, Hofmann H, Fiand U, Chem. Eng. Sci., 35, 249 (1980)
Gigax R, Chem. Eng. Sci., 43(8), 1759 (1988)
Bilous O, Amundson NR, AIChE J., 2, 117 (1956)
Cho CK, Merson JA, Cale TS, Rev. Sci. Instrum., 61(8), 2232 (1990)
Seborg DE, Edgar TF, Mellichamp DA, "Process Dynamics and Control," John Wiley and Sons, NY (1989)
Park JH, Cale TS, In Preparation (1992)
Froment CF, Bischoff KB, "Chemical Reactor Analysis and Design," John Wiley and Sons, NY (1979)
Satterfield CN, "Heterogeneous Catalysis in Practice," McGraw-Hill, NY (1980)
Morbidelli M, Varma A, AIChE J., 32(2), 297 (1986)
Cho CK, Ph.D. Dissertation, Arizona State University, Tempe, AZ (1990)
Barkelew CH, Chem. Eng. Prog., 55(25), 37 (1959)
McGreavy C, Adderley CI, Chem. Eng. Sci., 28, 577 (1973)
Kardos PW, Stevens WF, AIChE J., 17(5), 1090 (1971)
Silva JM, Wallman PH, Foss AS, Ind. Eng. Chem. Fundam., 18(4), 383 (1979)
Cale TS, J. Catal., 90(1), 40 (1984)
Ludlow DK, Ph.D. Thesis, Arizona State University, Tempe, AZ (1986)
Emig G, Hofmann H, Fiand U, Chem. Eng. Sci., 35, 249 (1980)
Gigax R, Chem. Eng. Sci., 43(8), 1759 (1988)
Bilous O, Amundson NR, AIChE J., 2, 117 (1956)
Cho CK, Merson JA, Cale TS, Rev. Sci. Instrum., 61(8), 2232 (1990)
Seborg DE, Edgar TF, Mellichamp DA, "Process Dynamics and Control," John Wiley and Sons, NY (1989)
Park JH, Cale TS, In Preparation (1992)
