Thursday, June 16, 2016

Engineering Economic Analysis - Case Studies

Engineering Economic Analysis - Case Studies

Engineering Economic Analysis - Case Studies

Authors

An Engineering-Economic Analysis
of Syngas Storage
The authors examined whether an IGCC facility that operates its gasifier continuously but stores the
syngas and produces electricity only when daily prices are high may be more profitable than an
IGCC facility with no syngas storage.
There are currently eight integrated coal gasification / combined cycle electrical turbine (IGCC)
facilities operating worldwide producing about 1.7 GW of electricity from coal or petcoke
feedstock, and in all of these facilities the syngas is used immediately after it is produced. There
are over one hundred coal gasification facilities producing chemical feedstocks, also without
storage. Without storage capabilities, the gasifier must be sized to fit the syngas end-use (such as
a gas turbine or chemicals process) and the operation of the two systems must be coupled.
Stored syngas may be used to produce electricity in gas turbines during periods of peak demand
when produced electricity is most valuable and prices are highest, while operating the gasifier at
the most efficient sustained production rate. Stored syngas may be a means to enhance the
reliability and availability of IGCC power plants, by increasing the availability of syngas during
planned and unplanned outages. Without storage, the coal gasification facility must be sized to
the gas turbine or other facility that uses the gas. Storage allows the two units to be sized and
run separately, thus gaining valuable flexibility. For IGCC designs where the air separation unit
is not fully integrated with the turbine (Farina 1999; Maurstad 2005), adding the capability to
store syngas can allow the gasifier and turbine to be sized and operated independently, thereby
providing valuable flexibility in the way the facility is configured and operated
The goal of this two year research project was to conduct a detailed study of syngas storage
options. The analysts performed an engineering-economic analysis of storage to inform the design of coal
gasification facilities as well as energy policy. The project collected the relevant syngas data
from gasification processes; explored the technical issues of storage such as hydrogen
embrittlement, leakage and energy loss from syngas storage; and performed an engineeringeconomic
analysis of storage options. In a parallel and complementary approach, they analyzed
the benefits and costs of syngas storage options under a variety of scenarios, sampling the
uncertainties in commodity prices, technical options, and regulatory policies.
 
 
 
 
 
 
 
Reference






2011

Additional parking spaces at both existing and new park and ride facilities across West Yorkshire.

Present Value of Benefits: £32.4 million;
Present Value of Costs: £9.9 million;
Net Present Value: £22.5 million; and
Benefit to Cost Ratio: 3.3:1

http://www.wymetro.com/NR/rdonlyres/CCFC6051-E6D0-4CC1-B807-81AB6C8E4B11/0/Appendix1ValueforMoneyReport.pdf

2015
Engineering Economic Analysis Guide: Liquid Fuels Technologies
http://www.eia.gov/forecasts/documentation/workshops/pdf/EEAGuide_12082015.pdf

ECONOMIC AND SUSTAINABILITY ASPECTS OF CHEMICAL PROCESS
INDUSTRIES BY THERMODYNAMICS ANALYSIS

Sustainability and Economic Analysis of Propylene Carbonate and Polypropylene Carbonate Production Processes Using CO2 and Propylene Oxide

2016
Energy and Economic Analysis of Heat Recovery from Boiler Exhaust Flue Gas
http://waset.org/Publication/energy-and-economic-analysis-of-heat-recovery-from-boiler-exhaust-flue-gas/10004340



Updated 19 June 2016,  17 Sep 2012




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1 comment:

  1. UnknownJune 12, 2016 at 4:55 PM

    THE GAS SHOULD BE SWEET,I.E FREE FROM SULPHUR.
    2 IT SHOULD BE DRY TO AVOID CORROSION-ASHOK

    ReplyDelete

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