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Capacity Upgrades and Energy Saving Retrofits of Ammonia Plants Retrofit Implementation at Yuntianhua, China

IP.com Disclosure Number: IPCOM000217646D
Publication Date: 2012-May-10

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KBR

KBR Ammonia Seminar 2004 Jakarta, Indonesia

KBR Ammonia Seminar 2004

Paper #/~

Capacity Upgrades and Energy Saving Retrofits of Ammonia Plants
Retrofit Implementation at Yuntianhua, China

Authors

Mahesh Gandhi

Gil Guillory

     KBR Houston, Texas, USA

Prepared for presentation at the

KBR Ammonia Seminar 2004 Jakarta, Indonesia
4-5 October 2004

Copyright KBR June 2004 Unpublished

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KBR

ABSTRACT

Properly executed Capacity Upgrade / Energy Savings Retrofit projects have shorter payback than new plants. KBR is a leader in the successful implementation of retrofit ammonia projects.

This paper discusses retrofit implementation procedure and explores the various options available to the ammonia plant owners. The problem for owners always remains


- Which option is the best for my plant?

The article suggests a viable retrofit strategy is a phased approach after the most appropriate options are selected by an engineering contractor of good repute. KBR offers a variety of technologies to achieve the ammonia plant owner's retrofit project objectives.

The capacity upgrade implemented at the Yuntianhua, Yunnan, China ammonia plant in 2004 is explored as an example of a successful KBR-engineered retrofit project.

INTRODUCTION

Retrofitting an existing ammonia plant has many advantages. The capital required for a capacity upgrade is typically much smaller than that for a new facility. The economic pay back is faster and the specific operating cost after retrofit is lower than the base operation.

Yuntianhua's upgrade to achieve a 50% increase over name plate capacity was executed in three phases. KBR provided a process study with a recommended retrofit scheme and a cost with +/- 25% (US Gulf coast basis) estimate. Basic engineering design followed the process study with implementation as the final phase.

RETROFIT IMPLEMENTATION PROCEDURE

Which retrofit option is the best for my plant? To answer this question KBR recommends a three-phase approach. Plant operators strive to make the most ammonia product with the least amount of energy. After waste and operating inefficiency are eliminated one has to consider process enhancements with retrofits. Early on in the initial project study phase the owner has to decide what his retrofit

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KBR Ammonia Seminar 2004 Jakarta, Indonesia

Capacity Upgrades and Energy Saving Retrofits of Ammonia Plants
Retrofit Implementation at Yuntianhua, China



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KBR Ammonia Seminar 2004 Jakarta, Indonesia

objectives are and what company is the best suited to evaluate the retrofit options to fulfill his objectives. Does this company have adequate experience of handling similar retrofits? Does this company have the proper tools and expertise in this field?

KBR, a world leader in Ammonia Technology, has the required tools, expertise and experience to select and implement viable, cost-effective retrofit schemes. KBR suggests following the following three phase approach:

PHASE I - PROCESS STUDY AND SE...