Crude Distillation Unit

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  • Topic: Heat exchanger, Log mean temperature difference, Heat transfer
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  • Published : March 31, 2013
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A REPORT
ON

CDU: HEAT EXCHANGE & INTEGRATION

BY

Mudit

2010A1PS349P

Amanpreet Singh

2010B4A1356P

Rishu Gupta

2010A1PS401P

AT
IOCL REFINERY, GUWAHATI

A Practice School-I station of
BIRLA INSTITUTE OF TECHNOLOGY & SCIENCE, PILANI
July, 2012

PREFACE

We feel immense pleasure in presenting before you this final report on our PS-1 program IOCL Guwahati refinery. This report encompasses a comprehensive discussion of what we learnt on this program.

The report starts with a brief introduction about the organization i.e. IOCL Guwahati refinery. We have kept discussion in this section brief to focus more on our Project ‘Heat exchange and integration in CDU ’.

The main report is divided into 4 sections. To start with, the first Section is a basic introduction to Crude distillation unit, its process and products. Heat exchange is among the most important activity for crude distillation units. The 2nd part of the report focuses on this heat exchange process occurring in the crude distillation unit of Guwahati refinery. Necessary data regarding all the heat exchangers has been provided in a tabular manner to make understanding easier. The concept of critical heat exchanger is introduced subsequently in the 3rd section along with the case study of some important heat exchangers of the process. Heat duty &other calculations presented in this section for heat exchangers are clearly explained in step by step manner along with formulas used. Through these calculations we have tried to analyze whether these exchangers are working efficiently. In the Last part of the report we have given an introduction to ‘heat integration’ one of the most important tool for increasing energy efficiency of a process. Points discussed about heat integration in this section are: Meaning, Importance, its need in CDU, Tools. We have concluded this part with an example of heat integration done in 2010 in pre-heat train of CDU, showing how it helped saving energy & increasing efficiency.

A final conclusion and glossary are provided to sum up the report. We hope you have a good time reading this report and find it informative and useful. Mudit, Amanpreet & Rishu

Birla Institute of Technology & Science
Pilani 333031

2

ACKOWLEDGEMENT
A comprehensive report always requires the goodwill, encouragement, guidance and support of many people so we would like to start by thanking our college BITS pilani for initiating program like ps-1 thereby giving us the opportunities to visit real time industries and learn by working on hand in organizations as big as IOCL. Our sincere thanks to Mr. B K Das, CPNM and Mr. P S Sonowal for assigning us this important project on heat integration in refinery and getting us in contact with the required person in each unit. Without their help this whole program would not have been possible.

We are indebted by the constant support and mentoring provided by Mr. Vijay Kumar,
TS
for
the
preparation
of
this
report.
Also, we take this opportunity to thank all the chief engineers, and workers we have met in different units who have received us with open hearts and helped us in learning the vast array of knowledge that a refinery holds. Mr. E Edmund of CDU, Mr. A. Bairagi of OM&S are just the few of these names with whom we shared numerous informative talks which finally went into the preparation of this report. We also express our deep sense of gratitude to IOCL administration for providing us with

necessary
data
and
making
our
stay
a
pleasant
one.
Thanks to our families & friends for their constant support and encouragement throughout
the
period
of
preparation
of
this
report.
It goes without saying that we are sincerely grateful to our instructor, Mr. Prasantha G for coordinating this ps-1 program and giving us opportunity to present before him this
report.

Thank you all

Birla Institute of Technology & Science
Pilani 333031

3

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