Improving Design of a Cryogenic Process by Exergy and Process Economic Analyses
A. N. Anozie, M. N. Braimah, O. J. Odejobi, O. P. Ayoola
Current Journal of Applied Science and Technology · pp. 2489–2500 · Published 28 Apr 2014
10.9734/BJAST/2014/8646Abstract
Aim: This work compared four different designs of a cryogenic process (Linde methane liquefaction) using exergy and process economic analyses. Study Design: Simulation, energy, exergy and process economic analyses were used. Place and Duration of Study: Department of Chemical Engineering, Obafemi Awolowo University Ile-Ife and the duration of study was between March and May 2011. Methodology: Hyprotech System Simulator (HYSYS) software was used in simulating the process plants and Microsoft Excel was used for exergy, energy and process economic analyses. Annual venture profit was used as economic index in the selection of best design among the available alternatives. Result: Linde Methane Liquefaction for cryogenic process was investigated for improvement using exergy and process economic analyses. Four design cases were considered. The exergy efficiency for the base case (case 1) was 5.19%, 5.30% for case 2 when a recycle was added to the base case, 28.7% for case 3 when a recycle and a turbine were added to the base case and 39.5% for case 4 when a recycle was added and the valve was replaced with a turbine in the base case. Case 3 has the highest equipment and installation cost of $594649.14. The capital investment, operating and maintenance expenses were $88574.00/yr, $89687.30/yr, $94280.17/yr and $90672.23/yr for case 1, case 2, case 3 and case 4, respectively. Process economic analysis based on 1 kg/h throughput revealed case 2 with the highest annual venture profit of $4564265.09/yr as the best design. Conclusion: Since it is known that throughput has effect on venture profit, it was concluded that case 4 with the highest exergetic efficiency could be the best design at higher throughput. This will be investigated in a follow up study.
References (15)
- 1 Advanced Engineering Thermodynamics [DOI]
- 2 Energy, environment and sustainable development [DOI]
- 3 Exergy–cost–energy–mass analysis of thermal systems and processes [DOI]
- 4 Exergy analysis of cryogenic air separation [DOI]
- 5 Chemical and process thermodynamics
- 6 Thermoeconomic analysis of power plants: an application to a coal fired electrical generating station [DOI]
- 7 Exergoeconomic analysis of the power generation system using blast furnace and coke oven gas in a Brazilian steel mill [DOI]
- 8 The search for optimum condenser cooling water flow rate in a thermal power plant [DOI]
- 9 Exergy analysis on the simulation of a small-scale hydrogen liquefaction test rig with a multi-component refrigerant refrigeration system [DOI]
- 10 Cryogenic turbine efficiencies [DOI]
- 11 Effect of reference state on exergy efficiencies of one- and two-stage crude oil distillation plants [DOI]
- 12 Exergy analysis of binary plate distillation column operations [DOI]
- 13 Exergy analysis and optimisation of binary plate distillation column operations [DOI]
- 14 Introduction to chemical engineering thermodynamics [DOI]
- 15 Exergy Analysis of Waste Emissions [DOI]
Cited by 4
M. N. Braimah, A. N. Anozie, R. O. Braimah · Journal of Environmental Science and Engineering Technology · 2017
Chukwuemeka J. Okereke, Idehai O. Ohijeagbon, Olumuyiwa A. Lasode · International Journal of Air-Conditioning and Refrigeration · 2019
Showing 2 of 4 known citations — external sources report more than can currently be individually listed.
Related research
- Effects of Fluidization Velocity and Equivalence Ratio on the Energy and Exergy of the Syngas Produced from Wheat Straw in A Dual-distributor Type Fluidized Bed Gasifier — shares topic coverage
- Analysis of Steam Power Plant at Kaduna Refining and Petrochemical Company from Exergetic Perspective — shares topic coverage
- An Approach of Exergy Analysis of Human Physiological Response in the Outdoor Conditions during Blocklaying in Ogun State, Nigeria — shares topic coverage
- Application of Artificial Neural Network (ANN) in the Optimization of Crude Oil Refinery Process: New Port-Harcourt Refinery — shares topic coverage
- Energy, Exergy and Environmental Compatibility Analyses of LPG and Household Kerosene Utilisations as Domestic Fuels in Nigeria: 1980 – 2019 — shares topic coverage
Article metrics
Real usage data collected on this platform.
23
Page views
0
PDF downloads
3
Outbound clicks
4
Citations
Views over time
Views by country
Approximate, from request IP at view time — not citizenship or institution. Countries with fewer than 5 views are grouped as "Other".
Traffic sources
Referring site, by host.
Views and downloads exclude known bots/crawlers. Citations combines this platform's own DOI-resolved index with each external source's own reported total — see Cited by above for individually listed citing works. Last refreshed 0 seconds ago.