Presentation is loading. Please wait.

Presentation is loading. Please wait.

Example The following figure shows a reaction system in which the temperature increases with the feed rate of flow-controlled stream D. Heat is removed.

Similar presentations


Presentation on theme: "Example The following figure shows a reaction system in which the temperature increases with the feed rate of flow-controlled stream D. Heat is removed."— Presentation transcript:

1 Example The following figure shows a reaction system in which the temperature increases with the feed rate of flow-controlled stream D. Heat is removed by water circulation through an exchanger. Normal reactor temperature is 200 F, but a catastrophic runaway will start if the reactor temperature reaches 300 F.

2

3 Example In view of this situation, 1.The reactor temperature is monitored; 2.Rising temperature is alarmed at 225 F 9see horn); 3.An interlock shuts off stream D at 250 F, stopping the reaction (see solenoid and valve A); 4.The operator can initiate the interlock by pushing the panic button.

4 Assumptions Secondary failures are neglected. The alarm signal always reaches the operator whenever the horn sounds

5

6


Download ppt "Example The following figure shows a reaction system in which the temperature increases with the feed rate of flow-controlled stream D. Heat is removed."

Similar presentations


Ads by Google