Techno-Economic Assessment of Syngas Generation from Municipal Solid Waste in Pakistan: A Simulated Study
Abstract
The key objective of this work is to analyze the techno-economic feasibility of municipal solid waste (MSW) gasification plant in a small village named Nano Dogar near Lahore, Pakistan. Sampling of MSW was performed in the village indicating feed rate as 83.4kg/hr equivalent to 2 tons/day. The technical assessment was achieved by using process simulator; ASPEN PLUS version 8.1, in terms of material and energy balance. The results attained were associated with equations finding process efficiency, power generation potential, capital and operating costs. For economic appraisal, various cost parameters were taken into account like interest rate, plant life, operating hours, costs of labor, maintenance, supervision and purchase equipment costs (PEC) to estimate the project feasibility indicators like return on investment (ROI), discounted payback period (DPBP), net present value (NPV), internal rate of return (IRR), and profitability index (PI). This hypothetic gasification plant has power generation potential of 0.175 MW/ton when operated at 800°C and 1 atm, with flowrates of MSW, air and steam as 80 kg/hr, 115 kg/hr and 52 kg/hr at 1 atm, respectively. However, the temperature for MSW and air was 25°C and for steam, it was 200°C. ROI and DPBP were found to be 4.6% and 3 years, respectively. NPV was positive followed by 17% IRR and PI was greater than one. This assessment can be useful to study the technical and economic aspects of gasification plant irrespective of feedstock type such as coal, oil and biomass, and plant capacity.References
S. Nanda and F. Berruti, “A technical review of bioenergy and resource recovery from municipal solid wasteâ€, J. Hazard. Mater., vol. 403,
p. 123970, 2020.
“Solid Waste Managementâ€, The World Bank, September 2019. [Online].Available:http://www.worldbank.org/en/topic/urbandevelopment/brief/solid-waste-management.
M. Asif, M.S. Malik and Z. Husnain, “Pakistan Economic Survey 2017-18â€, Islamabad, 2017. [Online]. Available: http://www.finance.gov.pk/survey_1718.html.
R.T. Hassan, “The cost of inefficient solid waste management", The Express Tribune, May 21, 2012. [Online]. Available: https://tribune.com.pk/story/381697/the-cost-of-inefficient-solid-waste-management.
S.M. Hina, “Municipal solid waste collection route optimization using geospatial techniques: A case study of two metropolitan cities of Pakistanâ€, NDSU Repository, February 2016. [Online]. Available: https://library.ndsu.edu/ir/handle/10365/25816.
T. Iqbal, C. Dong, Q. Lu, Z. Ali, I. Khan, Z. Hussain and A. Abbas, “Sketching pakistan’s energy dynamics: Prospects of biomass energyâ€, J. Renew. Sustain. Energy, vol. 10, no. 2, p. 023101, 2018.
S. Javied, F. Hanan, S. Munawar and M. Qasim, “Management of municipal solid waste generated in eight cities of Pakistanâ€, Int. J. Sci. Eng. Res., vol. 5, no. 12, pp. 1186-1192, 2014.
“Gas notified prices", Oil & Gas Regulatory Authority. [Online]. Available: https://www.ogra.org.pk/gas-notified-prices.
“Notified petroleum prices", Oil & Gas Regulatory Authority. [Online]. Available: https://www.ogra.org.pk/notified-petroleum-prices.
M.M. Rafique and S. Rehman, “National energy scenario of Pakistan – Current status, future alternatives, and institutional infrastructure: An overviewâ€, Renew. Sust. Energ. Rev., vol. 69, pp. 156–167, 2017.
N.H. Mirjat, M.A. Uqaili, K. Harijan, G.D. Walasai, M.A.H. Mondal and H. Sahin, “Long-term electricity demand forecast and supply side scenarios for Pakistan (2015–2050): A LEAP model application for policy analysisâ€, Energy, vol. 165, pp. 512–526, 2018.
G.D. Valasai, M.A. Uqaili, H.R. Memon, S.R. Samoo, N.H. Mirjat and K. Harijan, “Overcoming electricity crisis in Pakistan: A review of sustainable electricity optionsâ€, Renew. Sust. Energ. Rev., vol. 72, pp. 734–745, 2017.
M. Wakeel, B. Chen and S. Jahangir, “Overview of energy portfolio in Pakistanâ€, Energy Procedia, vol. 88, pp. 71–75, 2016.
V. Marcantonio, A. Monforti Ferrario, A. Di Carlo, L. Del Zotto, D. Monarca and E. Bocci, “Biomass steam gasification: A comparison of syngas composition between a 1-D Matlab Kinetic Model and a 0-D Aspen Plus Quasi-Equilibrium Modelâ€, Comput., vol. 8, no. 4, p. 86, 2020.
“Biomass explained: Waste-to-Energy (Municipal Solid Waste)â€, Energy Informmation Administration, 2018. [Online]. Available:https://www.eia.gov/energyexplained/?page=biomass_waste_to_energy.
C. Lin, J. Zhang, P. Zhao, Z. Wang, M. Yang, X. Cui, H. Tian and Q. Guo, “Gasification of real MSW-derived hydrochar under various atmosphere and temperatureâ€, Thermochim. Acta, vol. 683, p. 178470, 2020.
M. El-Fadel, A.N. Findikakis and J.O. Leckie, “Environmental impacts of solid waste landfillingâ€, J. Environ. Manage., vol. 50, no. 1, pp. 1–25, 1997.
D.M.Y. Maya, A.L.E. Sarmiento, C.A.V.B. Oliveira, E.E.S. Lora and R. Andrade, “Gasification of municipal solid waste for power generation in Brazil: A review of available technologies and their environmental benefitsâ€, J. Chem. Chem. Eng., vol. 10, pp. 249–255, 2016.
A.M. Shakorfow, “Biomass incineration, pyrolysis, combustion and gasificationâ€, Int. J. Sci. Res., vol. 5, no. 7, pp. 2319–7064, 2016.
A. AlNouss, P. Parthasarathy, M. Shahbaz, T. Al-Ansari, H. Mackey and G. McKay, “Techno-economic and sensitivity analysis of coconut coir pith-biomass gasification using Aspen Plusâ€, Appl. Energy, vol. 261, p. 114350, 2020.
P. Xu, Y. Jin and Y. Cheng, “Thermodynamic analysis of the gasification of municipal solid wasteâ€, Eng., vol. 3, no. 3, pp. 416–422, 2017.
A. AlNouss, G. McKay and T. Al-Ansari, “A comparison of steam and oxygen fed biomass gasification through a techno-economic-environmental studyâ€, Energy Convers. Manag., vol. 208, p. 112612, 2020.
Y.A. Situmorang, Z. Zhao, A. Yoshida, A. Abudula and G. Guan, “Small-scale biomass gasification systems for power generation (<200 kW class): A reviewâ€, Renew. Sust. Energ. Rev., vol. 117, p. 109486, 2020.
U. Arena, “Process and technological aspects of municipal solid waste gasification: A reviewâ€, Waste Manag., vol. 32, no. 4, pp. 625–639, 2012.
V. Soni and V. Naik, “Gasification: A process for energy recovery and disposal of municipal solid wasteâ€, Am. J. Mod. Energy, vol. 2, no. 6, pp. 38-42, 2016.
S. Begum, M.G. Rasul and D. Akbar, “A numerical investigation of municipal solid waste gasification using Aspen Plusâ€, Procedia Eng., vol. 90, pp. 710–717, 2014.
N. Ramzan, A. Ashraf, S. Naveed and A. Malik, “Simulation of hybrid biomass gasification using Aspen plus: A comparative performance analysis for food, municipal solid and poultry wasteâ€, Biomass Bioenergy, vol. 35, no. 9, pp. 3962–3969, 2011.
R. Fatoni, S. Gajjar, S. Gupta, S. Handa and A. Elkamel, “Modeling biomass gasification in a fluidized bed reactorâ€, Proceedings of the 2014 International Conference on Industrial Engineering and Operations Management, Bali, Indonesia, January 7-9, 2014, pp. 1047–1056.
C.Z. Wu, H. Huang, S.P. Zheng and X.L. Yin, “An economic analysis of biomass gasification and power generation in Chinaâ€, Bioresour. Technol., vol. 83, pp. 65–70, 2002.
M.N. Islam and F.N. Ani, “Techno-economics of rice husk pyrolysis, conversion with catalytic treatment to produce liquid fuelâ€, Bioresour. Technol., vol. 73, no. 1, pp. 67–75, 2000.
P. Hunpinyo, P. Narataruksa, S. Tungkamani, K. Pana-Suppamassadu and N. Chollacoop, “Evaluation of techno-economic feasibility biomass-to-energy by using Aspen Plus: A case study of Thailandâ€, Energy Procedia, vol. 42, pp. 640–649, 2013.
W. Gao, S. Wang, D. Li, J. Liu, M.R. Farahini, Y. Huo, M. Imran and M. Doranehgard, “Techno-economic evaluation of biomass-to- synthesis gas ( BtS ) based on gasificationâ€, Energy Sources Part B Econ. Plann. Policy, vol. 13, no. 2, pp. 83–90, 2018.
R.E. Moshi, Y.A.C. Jande, T.T. Kivevele and W.S. Kim, “Simulation and performance analysis of municipal solid waste gasification in a novel hybrid fixed bed gasifier using Aspen Plusâ€, Energy Sources Part A Recover. Util. Environ. Eff., pp. 1-13, 2020.
B. Burr and L. Lyddon, “A comparison of physical solvents for acid gas removalâ€, Gas Processors's Association Convention, Grapevine, TX, 2008.
R. Bucklin and R. Schendel, “Comparison of fluor solvent and selexol processesâ€, Energy Prog., vol. 4, no. 3, pp. 137–142, 1984.
“Aspen Plus: Leading Process Simulation Software", AspenTech. [Online].Available: https://www.aspentech.com/en/products/engineering/aspen-plus.
O.C. Mutlu and T. Zeng, “Challenges and opportunities of modeling biomass gasification in Aspen Plus: A reviewâ€, Chem. Eng. Technol., vol. 43, no. 9, pp. 1674–1689, 2020.
M.A. Chawdhury and K. Mahkamov, “Development of a small downdraft biomass gasifier for developing countriesâ€, J. Sci. Res., vol. 3, no. 1, pp. 51–64, 2010.
Y. Deng, P.B. Parajuli and H. Kim, “Cost analysis model for catalytic conversion of syngas in to light hydrocarbon gasesâ€, Inf. Process. Agric., vol. 2, no. 1, pp. 37–50, 2015.
T. Ramachar, G.C. Rao, M. Umamahesh and D. Nagamouli, “Calculation of energy recovery potential and power generation potential from municipal solid waste of Kurnool city, Andhra Pradesh, Indiaâ€, Int. J. Chem. Sci., vol. 12, no. 4, pp. 1345-1354, 2014.
J. Kahn, “State of municipal solid waste management in Pakistan: A case study of Haripur Districtâ€, PhD diss., Kingston University, 2016.
M.S. Korai, R.B. Mahar and M.A. Uqaili, “Assessment of power generation potential from municipal solid wastes: A case study of Hyderabad city, Sindh, Pakistanâ€, Pak. J. Anal. Environ. Chem., vol. 15, no. 1, p. 10, 2014.
I.S. Antonopoulos, A. Karagiannidis and E. Kalogirou, “Estimation of municipal solid waste heating value in Greece in the frame of formulating appropriate scenarios on waste treatmentâ€, Proceedings of the 3rd International Symposium on Energy from Biomass and Waste, Venice, Italy, November 8-11, 2010.
R.M. Sari and K. Kolmetz, General Process Plant Cost Estimating, Kolmetz Handbook of Process Equipment Design (Engineering Design Guideline), Malaysia: KLM Technology Group, June 2014.
G. Towler and R. Sinnott, Chemical Engineering Design: Principles, Practice and Economics of Plant and Process Design, 2nd Ed., California: Elsevier, 2013.
M.S. Peters and K.D. Timmerhaus, Plant Design and Economics for Chemical Engineers, 4th Ed., New York: McGraw-Hill, 1991.
W.J. Stevenson, Operations Management, 12th Ed., New York: McGraw-Hill, 2015.
S.A. Batool and M.N. Ch, “Municipal solid waste management in Lahore city district, Pakistanâ€, Waste Manag., vol. 29, no. 6, pp. 1971–1981, 2009.
“Fair work wages in Pakistanâ€, 2018. [Online]. Available: https://paycheck.pk/labour-laws/wages-work.
“Pakistan household electricity consumption per capita| Statisticâ€, The Statistics Portal, 2015. [Online]. Available: https://www.statista.com/statistics/598318/household-consumption-of-electricity-per-capita-in-pakistan/.
A. Shehzad, M.J.K. Bashir and S. Sethupathi, “System analysis for synthesis gas (syngas) production in Pakistan from municipal solid waste gasification using a circulating fluidized bed gasifierâ€, Renew. Sust. Energ. Rev., vol. 60, pp. 1302–1311, 2016.
