Practical Process Integration Retrofit Part 4. Handling Large Projects

Developed by: AIChE
  • Type:
    Conference Presentation
  • Skill Level:
    Intermediate
  • PDHs:
    0.50

Share This Post:

You will be able to download and print a certificate for PDH credits once the content has been viewed. If you have already viewed this content, please click here to login.

Practical Process Integration Retrofit

Part 4.  Dealing with Large Projects

G.T.Polley

The  Cross-Pinch Method is suitable for use in identify retrofits when the number of streams is small (the example used in the demonstration of this method had seven streams, Polley [2011]). However, Pinch Technology is based on the assumptions that capital cost expenditure is controlled by the cost of heat exchangers and factors such as network operability can initially be ignored. With small projects operability considerations are easily undertaken by an experienced process engineer as the revamp is developed. With large projects this is difficult. The evaluation of the capital cost of a revamp can often be dominated by the cost of piping a modification to civils. With small sized projects an experienced process engineer can incorporate a consideration of these factors as a network structure is developed. With large projects this is not possible.

The solution to this problem is to decompose large networks into a number of smaller self contained networks.

References

Tjoe T.N. & Linnhoff B. Using pinch technology for process retrofit, Chem.Engng., 1986 April 28, pp47-60

Ahmad S. & Linnhoff B. Supertargeting: Different process structures for different economics, ASME J.En.Res.Tech., 1989, 111(3), 131-136

Tjoe T.N.  Ph.D. Thesis 1986, UMIST, UK

Presenter(s): 

Checkout

Checkout

Do you already own this?

Log In for instructions on accessing this content.

Pricing

AIChE Member Credits 0.5
AIChE Members $15.00
AIChE Fuels and Petrochemicals Division Members Free
AIChE Undergraduate Student Members Free
AIChE Graduate Student Members Free
Non-Members $25.00