CPI has set up flare minimization as a goal in their daily operations. Root-cause-analysis (RCA) has been used in chemical plants to identify causes of major flaring; but RCA does not offer a method for flare minimization. Up to now, flare minimization in chemical plant depends almost exclusively on experienced operators, engineers, administrators, and a well planning, scheduling, and training in the plant. But this is not enough for CPI today because of increasingly strict environmental regulations and economic competitions.
This presentation describes a general methodology we have developed for flare minimization through plant-wide dynamic simulation. The methodology starts with establishment and fine-tuning of plant-wide steady-state and dynamic simulation models. The fine-tuned dynamic simulation model is then used to virtually run and examine the startup operating procedures for the plant. If an unstable or a dangerous situation is identified, the plant operational procedures will be modified and then checked again with the dynamic simulation model. This modification-and-check can be repeated until optimal operating procedures with realistic constrains are concluded. The dynamic simulation provided an insight into the process dynamic behaviors, which is crucial for a plant to minimize the flaring; meanwhile, maintain the operating safety.
The effectiveness of the developed methodology has been demonstrated by field tests in ethylene plants. Two types of startup procedures, with and without total recycles, were tested. Results of unstable conditions were identified and dynamic responses of new startup procedures were examined. Three field test cases will be presented.
Would you like to access this content?
No problem. You just have to complete the following steps.
You have completed 0 of 2 steps.
You must be logged in to view this content. Log in now.
Purchase Technical Presentation
You must purchase this technical presentation using one of the options below.
If you already purchased this content recently, please click here to refresh the system's record of ownerships.
|Credits||0.5 Use credits|
|List Price||$25.00 Buy now|
|AIChE Members||$15.00 Buy now|
|AIChE Undergraduate Student Members||Free Free access|
|AIChE Graduate Student Members||$15.00 Buy now|