Table 6 List of step disturbances to the incoming acid gas.

From: Design, optimization and controllability analysis of an improved sulfur recovery unit based on SuperClaus process

Disturbance

Definition

D1

+ 20% step change in the feed temperature

D2

-20% step change in the feed temperature

D3

+ 5% step change in the feed H2S concentration

D4

-5% step change in the feed H2S concentration

D5

+ 10% step change in the feed pressure

D6

-10% step change in the feed pressure

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