CHE 1100 Lecture Notes - Lecture 6: Compressibility Factor, Ideal Gas Law, Reduced Properties
Document Summary
Chemicals, pulp and paper and oil and gas. Basic control, adv control, and multivariable process control. An alarm is an annunciated process condition to which the operator can and must take corrective action in order to. Low level in tank to refinery or not in service. Alarm flood- 100 alarms in a certain time period. Each alarm is stand alone and doesn"t have knowledge of current plant status. Three mile island (1979)- one of the problems was that the operators were loaded with numerous alarms, and that several key alarms were misleading. Texaco, milford haven (1994)- in the last 11 minutes before explosion there was 275 alarms. The position is a 2 phase envelope. If we know pc and tc, we can generalize. If z=1 we can use ideal gas law pv=rt. If we are anywhere close to a liquid or solid, never use ig approx. Air at 300k and 1 atm, tc= 132 k, pc= 37 atm: = 6. 9.
