Technoeconomic Analysis of the Thermocatalytic Decomposition of Natural Gas

Technoeconomic analysis of a waste tire to liquefied synthetic natural gas (SNG) energy system

Energy ◽

10.1016/j.energy.2020.117830 ◽

2020 ◽

Vol 205 ◽

pp. 117830 ◽

Cited By ~ 1

Author(s):

Avinash S.R. Subramanian ◽

Truls Gundersen ◽

Thomas A. Adams

Keyword(s):

Natural Gas ◽

Energy System ◽

Synthetic Natural Gas ◽

Technoeconomic Analysis ◽

Waste Tire

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Technoeconomic Analysis of Microalgae Cofiring Process for Fossil Fuel-Fired Power Plants

Journal of Energy Resources Technology ◽

10.1115/1.4003729 ◽

2011 ◽

Vol 133 (1) ◽

Cited By ~ 7

Author(s):

Jian Ma ◽

Oliver Hemmers

Keyword(s):

Natural Gas ◽

Flue Gas ◽

Algal Biomass ◽

Power Plants ◽

Fossil Fuel ◽

Construction Materials ◽

Ghg Emissions ◽

Pure Oxygen ◽

Microalgal Biomass ◽

Technoeconomic Analysis

The concept of cofiring (algal biomass burned together with coal or natural gas in existing utility power boilers) includes the utilization of CO2 from power plant for algal biomass culture and oxycombustion of using oxygen generated by biomass to enhance the combustion efficiency. As it reduces CO2 emission by recycling it and uses less fossil fuel, there are concomitant benefits of reduced greenhouse gas (GHG) emissions. The by-products (oxygen) of microalgal biomass can be mixed with air or recycled flue gas prior to combustion, which will have the benefits of lower nitrogen oxide concentration in flue gas, higher efficiency of combustion, and not too high temperature (avoided by available construction materials) resulting from coal combustion in pure oxygen. A technoeconomic analysis of microalgae cofiring process for fossil fuel-fired power plants is studied. A process with closed photobioreactor and artificial illumination is evaluated for microalgae cultivation, due to its simplicity with less influence from climate variations. The results from this process would contribute to further estimation of process performance and investment. Two case studies show that there are average savings about $0.264 million/MW/yr and $0.203 million/MW/yr for coal-fired and natural gas-fired power plants, respectively. These cost savings are economically attractive and demonstrate the promise of microalgae technology for reducing GHG emission from fossil fuel-fired power plants.

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TECHNOECONOMIC ANALYSIS OF REFINING NIGERIAN LIQUEFIED NATURAL GAS CONDENSATE

JOURNAL OF THE NIGERIAN SOCIETY OF CHEMICAL ENGINEERS ◽

10.51975/21360206.som ◽

2021 ◽

Vol 36 (2) ◽

pp. 43-54

Author(s):

I.O Oseni ◽

E.O Agbonghae ◽

C.N Nwaozuzu

Keyword(s):

Natural Gas ◽

Value Chain ◽

Net Present Value ◽

Liquefied Natural Gas ◽

Oil Price ◽

Catalytic Reforming ◽

Price Forecast ◽

Technoeconomic Analysis ◽

Light Oil ◽

Pessimistic Scenario

Condensate refining is among the strategies proposed to solve the light oil glut around the globe. The Nigerian Liquefied Natural Gas (NLNG), which is the Nigerian government’s best performing investment in the natural gas value chain, produces plant condensate as a by-product. In this paper, the economics of a refinery designed to use NLNG plant condensate is evaluated under an optimistic oil price forecast and a pessimistic oil price trend. A gasoline producing refinery configuration was chosen for this study, and it comprises of a naphtha splitter, a Penex isomerisation unit and a Continuous Catalytic Reforming (CCR) unit. The product yields and plant costs were determined by established correlations and industry estimates. The proposed refinery will convert 40,000 bpd plant condensate into 96% gasoline, 3% LPG and 1% hydrogen, and economic indicators such as Net Present Value (NPV), Internal Rate of Return (IRR) and Profitability Index (PI) were used to assess the economic viability of the refinery. The optimistic scenario of oil price forecast resulted in an NPV of $ 531.90 million, an IRR of 20.09% and a PI of 3.16, while the pessimistic scenario gave an NPV of $16.26 million, an IRR of 11.16% and a PI of 1.07. These results prove that a condensate refinery with the proposed configuration is economically feasible and interested investors in Nigeria’s refining space should explore this possibility.

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