Impact of retrofitting existing combined heat and power plant with polygeneration of biomethane: A comparative techno-economic analysis of integrating different gasifiers

Salman, Chaudhary Awais; Naqvi, Muhammad; Thorin, Eva; Yan, Jinyue

doi:10.1016/j.enconman.2017.09.022

Cited by 33 publications

(17 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Biogas is the product of AD from several feedstocks. Biomethane, in contrast, is produced by biogas upgrading, which is a renewable energy source (RES) suitable for electricity and heat production, injection into the gas grid, and for use as fuel for transportation [16]. The technical standards necessary for using biomethane (as an alternative to natural gas) are specific to the final destination [17].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Italian Cities: The Added Value of Biomethane from Organic Waste

2019

View full text Add to dashboard Cite

This work focuses on the profitability of biomethane plants and the environmental benefits obtained recovering the organic fraction of municipal solid waste in Italy. The economic model is based on the calculations of the net present value, considering multiple capacities of biomethane production (ranging from 50 to 500 m3/h) and alternative scenarios based on the variation in subsidies, the selling price of biomethane, and the net revenues from the treatment of organic waste. The environmental analysis quantifies the reduction in greenhouse gas emissions obtained by natural gas vehicles fueled by biomethane. The economic and environmental results encourage energy change that can be achieved by municipalities that support the transformation of natural resources into green fuels. Across 15 Italian municipalities, the potential biomethane production varies from 80.4 million m3/year to 102.8 million m3/year, with an overall net present value ranging from 135 to 187 million €. In addition, the reduction in greenhouse gas emissions varies from 127 to 162 thousand-ton CO2eq/year. Both the economic and environmental results demonstrate that biomethane is a renewable resource with added value for municipalities.

show abstract

Section: Introductionmentioning

confidence: 99%

Sustainable Italian Cities: The Added Value of Biomethane from Organic Waste

2019

View full text Add to dashboard Cite

show abstract

“…The existing CHP plant was previously modeled and simulated by authors [1]. Modelling and simulation of pyrolysis and gasification processes were also developed by authors previously [1], [2], [8], [9]. The bio-oil upgradation methodology has been adopted by Dutta et al [6].…”

Section: Process Modeling and Simulationmentioning

confidence: 99%

“…For membrane separation process to produce hydrogen, we assume that 90% of the hydrogen is passing the membrane with quality of > 99% H 2 , and we can also neglect permeation of other components. In Table 1 we see the gas components as kmol/h from the gasifier for both alternatives, i.e., (1). After the WGS reaction and (2).…”

Section: Technical Performancementioning

confidence: 99%

“…In Northern Europe, there are many biomass and waste-based combined heat and power (CHP) plants to fulfill the heat and electricity demand. Since the enormous expansion of wind and solar power especially in Germany, Denmark, and Sweden, we see strong competition between these and the thermal power of all kind [1], [2]. The wind and solar power cannot be controlled and thus have priority over these CHP plants to the electric grid.…”

Section: Introductionmentioning

confidence: 99%

“…Part load operation of CHP plant with too few operational hours not only make the economic performance worse but also decrease the overall process energy efficiency [3]. By integrating the CHP plants with thermochemical processes for the production of biofuels/chemicals the integrated processes can be operated more hours, give high energy return and may also increase the profitability [1], [2].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Future directions for CHP plants using biomass and waste – adding production of vehicle fuels

et al. 2019

Self Cite

View full text Add to dashboard Cite

In Northern Europe, the production of many biobased CHP plants is getting affected due to the enormous expansion of wind and solar power. In addition, heat demand varies throughout the year, and existing CHP plants show less technical performance and suffer economically. By integrating the existing CHP plants with other processes for the production of chemicals, they can be operated more hours, provide operational and production flexibility and thus increase efficiency and profitability. In this paper, we look at a possible solution by converting an existing CHP plant into integrated biorefinery by retrofitting pyrolysis and gasification process. Pyrolysis is retrofitted in an existed CHP plant. Bio-oil obtained from pyrolysis is upgraded to vehicle grade biofuels. Gasification process located upfront of CHP plant provides the hydrogen required for upgradation of biofuel. The results show that a pyrolysis plant with 18 ton/h feed handling capacity (90 MWth), when integrated with gasification for hydrogen requirement and CHP plant for heat can produce 5.2 ton/h of gasoline/diesel grade biofuels. The system integration gives positive economic benefits too but the annual operating hours can impact economic performance.

show abstract

Potential environmental benefits of integrating flue gas quench in biomass/waste‐fueled CHP plants

Wang

Naqvi

et al. 2020

Energy Science & Engineering

Self Cite

View full text Add to dashboard Cite

Due to stricter regulations, large biomass/waste incineration power plants are expected to reduce (i) pollutant emissions through water (such as organic compounds dissolved in the discharge water), (ii) the withdrawal of external freshwater, and (iii) the disturbance to the natural water by increasing the water recycle and internal reuse. To address such challenges, flue gas quench (FGQ) is playing a vital role that links flue gas (FG) cleaning and wastewater treatment. In this study, a detailed analysis based on the material and energy balance is performed regarding the pollutant distribution in the flue gas and the wastewater within a combined heat and power (CHP) plant. The real data from the reference CHP plant were used; and results show that the utilization of FGQ can result in less wastewater discharge (about 73 tonnes/d) together with less pollutant concentration to the municipal wastewater treatment plant, as compared to the system with only flue gas condenser but without FGQ. The integration of FGQ also results in less burden on the external freshwater use by increasing the amount of clean water for internal use (about 57 tonnes per day). In addition, the integration of FGQ can offer a potential annual energy saving of about 13.1 MWh in the municipal wastewater treatment plant due to the less wastewater coming from the CHP plant.

show abstract

Impact of retrofitting existing combined heat and power plant with polygeneration of biomethane: A comparative techno-economic analysis of integrating different gasifiers

Cited by 33 publications

References 35 publications

Sustainable Italian Cities: The Added Value of Biomethane from Organic Waste

Sustainable Italian Cities: The Added Value of Biomethane from Organic Waste

Future directions for CHP plants using biomass and waste – adding production of vehicle fuels

Potential environmental benefits of integrating flue gas quench in biomass/waste‐fueled CHP plants

Contact Info

Product

Resources

About