Simulation of Improved Design for Ammonia Plant Front End Waste Heat Boilers

International Journal of Chemical Engineering Research

© 2021 by SSRG - IJCER Journal

Volume 8 Issue 1

Year of Publication : 2021

Authors : Agu Kingsley Chidozie, Oduola Mujeeb Koyejo

10.14445/23945370/IJCER-V8I1P102

How to Cite?

Agu Kingsley Chidozie, Oduola Mujeeb Koyejo, "Simulation of Improved Design for Ammonia Plant Front End Waste Heat Boilers," SSRG International Journal of Chemical Engineering Research, vol. 8,  no. 1, pp. 5-14, 2021. Crossref, https://doi.org/10.14445/23945370/IJCER-V8I1P102

Abstract:

This paper is focused on the improved design of an ammonia plant front-end waste heat boilers. The study covered the initial design, the failure rate, and causes over a given period of time. The initial design is a set up of two bayonet tube exchangers and a straight fixed tube exchanger vertically inclined, which is prone to failure primarily because of the configuration, while the improved design is a single floating head exchanger horizontally inclined. The improved designs and their functionality have been analyzed as regards the ammonia plant understudy, and cost-effectiveness evaluated. The properties and conditions of the front end section at various rates were used to simulate the improved design via Aspen HYSYS. The improved design at 70%, 80%, 90% and 100% front end rate gave heat duties of 6.578e+08kJ/hr,8.095e+08kJ/hr, 8.188e+08kJ/hr and 9.787e+08kJ/hr respectively. When compared to the heat duties of the present design under similar conditions, the heat duties of the improved design were higher at the different front-end rates showing higher efficiency. Thus, the single improved exchanger with a quite low failure rate can comfortably replace the three front-end waste heat boilers and, in turn, increase throughput and drastically drop overhead running cost.

Keywords:

ammonia plant, aspen hysys, process design, logistic regression modeling, waste heat boilers.

References:

[1] Reay, D.A. and Span, F.N., Heat Recovery Systems, London Publisher, (1979) 173-188.
[2] Umesh Jain. Improved Design for Waste Heat Boilers in Ammonia Plant, in Proc. AFA Process Waste Heat Boilers workshop Dec. 1-3, Doha, QATAR, paper 1(1)(2014) 1-9.
[3] Malone, J., Read, T. and Boyd, B., Operating instructions manual for 1000 Metric tonnes per stream day Ammonia Plant, National Fertilizer Company of Nigeria (NAFCON) publishing, Rivers State, 1(1986) 20-70.
[4] Kabir, R., Steam boilers: Classifications of Steam Boilers, Integrated Publishing Inc, (2016), 24-32.
[5] North American Process Technology Alliance (NAPTA), “Boilers,” (2017), 291-306, retrieved from https://www.pearsonhighered.com/assets/samplechapter/0/1/3/4/0134891260.pdf.
[6] Sangeeth, G.S. and Marathur, P., Efficiency improvement of boilers, International Research Journal of Engineering and Technology (IRJET), ISO 9001:2008 Certified Journal, 2(2015) 265-268.
[7] Sathish, Y., Boiler and its types”, E- Publisher, (2017),1-47., retrieved from www.slideshare.net/featured/category/engineering.
[8] Parvez, M., Steam Boilers, Department of Mechanical Engineering Al-Falah University, Research Gate Publisher, Faridabad, (2017), Chapter 2.
[9] Dodeja, A.K., and Dabas, J.K., Boiler mountings and accessories, Diary Engineering Publisher, Available on http://ecoursesonline.iasri.res.in/mod/resource/view.php?id=3822., (2018).
[10] Rahman, S., Classification of the boiler, E-Publisher, Bangladesh, (2018) 1-15.
[11] Arzbaecher, C., Fouche, E. and Parmenter, K., Industrial Waste-Heat Recovery: Benefits and Recent Advancements in Technology and Alications, Summer Study on Energy Efficiency in Industry, ACEEE Publisher, (2007) 1-11.
[12] Thekdi, A.C. and Nimbalkar, S.U., Industrial Waste Heat Recovery: Potential Alications, Available Technologies, and Crosscutting R&D Opportunities, E3M Inc, (2014) 1-74.
[13] McKenna, R., Thermal heat recovery, Encyclopaedia Britannica Inc., retrieved from https://www.britannica.com/science/thermal-heat-recovery.,(2019).
[14] Zakaria Z. and Hashim N.I. Corrosion-erosion on waste heat recovery boiler system via blowdown optimization J. Petroleum Gas Eng., 3(3)(2012) 41-50,
[15] Naiem, H., Ammonia Synthesis loop waste heat boiler failure in Ammonia Plant III”, Arab Fertilizer Association (AFA) Workshop on Process Waste Heat Boilers Integrity and Reliability, Qatar, (2014) 80-90.
[16] Singh, A., Sharma, V., Mittal, S., Pandey, G., Mudgal, D. and Gupta, P., An overview of problems and solutions for components subjected to the fireside of boilers, International Journal of Industrial Chemistry, 9(1)(2018) 1–15.
[17] Martens, D. and Porter, M., Why do waste heat boilers fail, Porter McGuffie, Inc. and L. Stern of Stern Treating & Sulphur Recovery Consulting, Inc, Available on http://pm-engr.com/wp-content/uploads/2015/10/2014_Suphur_Mag_article_S-354-WasteHeatBoilers_PMI.pdf.,(2014) 1-4.
[18] Al-Mulhim A., Primary waste heat boiler failure analysis, repair methodology and replacement, Arab Fertilizer Association (AFA) Workshop on Process Waste Heat Boilers Integrity and Reliability, Qatar, (2014) 103-110.
[19] Mazouz, H. and El Bou, A.B., Waste heat recovery in fertilizer industry: OCP case study, Arab Fertilizer Association (AFA) Workshop on Process Waste Heat Boilers Integrity and Reliability, Qatar, (2014).. 118-127.
[20] Suez water technologies and solutions., Handbook of industrial water treatment: Boiler system failures, (2019). Available on: https://www.suezwatertechnologies.com/handbook/chapter-14-boiler-system-failures.
[21] Aditya, B., Case study of a condemned boiler and methods to re-establish it, A Major (or Minor) Project Report, Department of Mechanical Engineering, Budge Budge Institute of Technology Kolkata, (2016) 4-15.
[22] Babu, J.S., Latha, R., Praveen, B., Kumar, V.A., Kumar, R.R. and Peerulla, S., A Study Analysis and Performance of High-Pressure Boilers with its accessories, International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 02 (1), IRJET.NET, (2015) 353.
[23] Deekae, G.. Personal Communication, Ammonia Plant, Notore Chemical Industries PLC, Rivers State, Nigeria, (2019).
[24] Bamrotwar, S.R. and Deshpande, D.V., Root cause analysis and economic implication of boiler tube failures in 210 MW thermal power plant, IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN: 2278-1684, p-ISSN: 2320-334X, (2014) 6-10. Availableon:https://pdfs.semanticscholar.org/a3a5/7f36b5f70df438c6575dd55f3c96a735091e.pdf.
[25] Bose, D., Waste Heat Recovery: Fundamentals, University of Petroleum and Energy Studies Journal 1(2)(2016) Available on https://www.slideshare.net/DebajyotiBose/waste-heat-recovery-67234854?qid=1b8d238ecda94c24.8036fcfe8683a412&v=&b=&from_search=2.
[26] Bureau of Energy Efficiency Available on https://beeindia.gov.in/sites/default/files/2Ch8.pdf.,173(2004).
[27] Gupta, R.D., Ghai S. and Jain A., Energy Efficiency Improvement Strategies for Industrial Boilers: A Case Study, Journal of Engineering Technology, 1(1)(2011) 52-56. Available on: http://www.onlinejet.net/text.asp?2011/1/1/52/74541
[28] Lv, T., Yu, L. and Song, J., A Research of Simplified Method in Boiler Efficiency Test, International Conference on Future Electrical Power and Energy Systems, Elsevier, Energy Procedia 17(2012) 1007-1013
[29] Mannan, S., Lees’ Loss Prevention in the Process Industries: Waste heat boilers, 4th Edition, Elsevier Inc, (2012), 545.
[30] McGuffie, S.M., Porter, M.A., Martens, D.H. and Demskie, M.J., Combining Computational Fluid Dynamics (CFD) derived information and thermodynamic analysis to investigate waste heat boiler characteristics, American Society of Mechanical Engineers (ASME) Pressure Vessels and Piping Conference Maryland, Paper number: PVP 2011-57625, (2011), 3, 33-42.
[31] R.W.Tapre, Dr.J.P.Kaware., Experimental Study of the Effect of the Reynolds Number on Overall Heat Transfer Coefficient in Spiral Heat Exchanger for Acetic Acid – Water System., SSRG International Journal of Chemical Engineering Research 5.2 (2018) 1-5.