Lee, Ji Hyun
(Creative Future Research Laboratory, KEPCO Research Institute, Korea Electric Power Corporation)
,
Lee, Dong Woog
(Creative Future Research Laboratory, KEPCO Research Institute, Korea Electric Power Corporation)
,
Kwak, No-Sang
(Creative Future Research Laboratory, KEPCO Research Institute, Korea Electric Power Corporation)
,
Lee, Jung Hyun
(Creative Future Research Laboratory, KEPCO Research Institute, Korea Electric Power Corporation)
,
Shim, Jae-Goo
(Creative Future Research Laboratory, KEPCO Research Institute, Korea Electric Power Corporation)
Techno-economic evaluation of Non-Capture $CO_2$ Utilization (NCCU) technology for the production of high-value-added products using greenhouse gas ($CO_2$) was performed. The general scheme of NCCU process is composed of $CO_2$ carbonation and brine electrolysis pro...
Techno-economic evaluation of Non-Capture $CO_2$ Utilization (NCCU) technology for the production of high-value-added products using greenhouse gas ($CO_2$) was performed. The general scheme of NCCU process is composed of $CO_2$ carbonation and brine electrolysis process. Through a carbonation reaction with sodium hydroxide that is generated from brine electrolysis and $CO_2$ of the flue gas, it is possible to get high-value-added products such as sodium bicarbonate, sodium hydroxide, hydrogen & chloride and also to reduce the $CO_2$ emission simultaneously. For the techno-economic study on NCCU technology, continuous operation of bench-scale facility which could treat $2kgCO_2/day$ was performed. and based on the key performance data evaluated, the economic evaluation analysis targeted on the commercial chemical plant, which could treat 6 tons $CO_2$ per day, was performed using the net present value (NPV) metrics. The results showed that the net profit obtained during the whole plant operation was about 7,890 mKRW (million Korean Won) on NPV metrics and annual $CO_2$ reduction was estimated as about $2,000tCO_2$. Also it was found that the energy consumption of brine electrolysis is one of the key factors which affect the plant operation cost (ex. electricity consumption) and the net profit of the plant. Based on these results, it could be deduced that NCCU technology of this study could be one of the cost-effective $CO_2$ utilization technology options.
Techno-economic evaluation of Non-Capture $CO_2$ Utilization (NCCU) technology for the production of high-value-added products using greenhouse gas ($CO_2$) was performed. The general scheme of NCCU process is composed of $CO_2$ carbonation and brine electrolysis process. Through a carbonation reaction with sodium hydroxide that is generated from brine electrolysis and $CO_2$ of the flue gas, it is possible to get high-value-added products such as sodium bicarbonate, sodium hydroxide, hydrogen & chloride and also to reduce the $CO_2$ emission simultaneously. For the techno-economic study on NCCU technology, continuous operation of bench-scale facility which could treat $2kgCO_2/day$ was performed. and based on the key performance data evaluated, the economic evaluation analysis targeted on the commercial chemical plant, which could treat 6 tons $CO_2$ per day, was performed using the net present value (NPV) metrics. The results showed that the net profit obtained during the whole plant operation was about 7,890 mKRW (million Korean Won) on NPV metrics and annual $CO_2$ reduction was estimated as about $2,000tCO_2$. Also it was found that the energy consumption of brine electrolysis is one of the key factors which affect the plant operation cost (ex. electricity consumption) and the net profit of the plant. Based on these results, it could be deduced that NCCU technology of this study could be one of the cost-effective $CO_2$ utilization technology options.
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문제 정의
In this study, techno-economic evaluation of NCCU process which could capture and convert CO2 was performed. For this purpose, bench-scale NCCU process was designed which could treat 2 kgCO2/d.
제안 방법
For an economic assessment of the cost of operation for plant operation, this study referred to the main guidelines proposed by the International Energy Agency [4]. After establishing cases for various contingencies along with the basic process, yield and profit were analyzed by implementing a sensitivity analysis using net present value (NPV) and internal rate of return (IRR) metrics. NPV is one of the capital budgeting methods which subtract the invested amount from the current value of the net cash flow calculated based on the investment, the net present value is simply the summation of cash flows (C) for each period (n) in the holding period (N), discounted at the investor’s required rate of return (r):
And based on this material balance data, the CAPEX & OPEX was calculated using literature values to calculate the cash flow of benefits and costs in accordance with annual plant operation.
And based on this material balance data, the CAPEX & OPEX was calculated using literature values to calculate the cash flow of benefits and costs in accordance with annual plant operation. For the unit sales price of chemicals considered for the economic assessment in this study, the most recent price analysis and professional market trend materials were used.
성능/효과
electricity consumption) and the net profit. Based on these results, it could be deduced that NCCU technology of this study could be a cost-effective CO2 utilization technology. And it was shown that the suggested methodolgy of this study could be effectively applied to the related fields.
4 MW scale). The analysis showed that if a plant is fully operated for 20 years, the NPV value would be increased from 2,011 mKRW (0.1 MW scale) to 12,034 mKRW (0.4 MW scale). And in case of plant scale below 0.
6). The analysis showed that the net profit over 20 years was increased from 3,898 mKRW (plant operation rate: 70%, baseline) to 5,062 mKRW (plant operation rate: 90%).
To this end, a sensitivity analysis was conducted for when the electric power consumption for unit chlorine gas production in the electrolysis process is reduced by 20% from the current 2,500 kWh/tCl2 (2,000 kWh/tCl2) and when it is reduced by 30% (1,750 kWh/tCl2). The analysis showed that the total net profit over a period of 20 years increased by from 3,898 mKRW (basic condition) to 4,074 mKRW (1,750 kWh/tCl2).
Techno-economic evaluation analysis targeted on the chemical plant which could handle 6 tons CO2 per day was performed using the net present value metrics. The results showed that the profit obtained during the plant operation periods was about 7,890 mKRW on NPV metrics and annual CO2 reduction was about 2,000 tCO2. Also it was found that the energy consumption of brine electrolysis is one of the key factors which affect the plant operation cost (ex.
The results showed that various experimental data including reactor temperature, pH & CO2 removal rate (or CO2 conversion rate) remained stable during the continuous operation and the CO2 conversion rate was kept almost 100%.
후속연구
The investment cost was calculated based on various literature sources and actual records for similar plants. The investment and operation costs used in this study will be verified and supplemented based on the detailed design data through enhanced studies in the future. For the analysis of the effects of plant scale on the net profit, total plant cost of 0.
참고문헌 (10)
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Jerzy Chilstunoff, (2004) Advanced Chlor-Alkali Technology, DOE Award 03EE-2F/ED190403, Los Alamos National laboratory.
Korea Development Institute, (2008) A study on standard guideline for pre-feasibility study, 5th edition, 181-213.
IEA Greenhouse Gas R&D Programme, (2009) Criteria for Technical and Economic Assessment of Plants with Low $CO_2$ Emissions, International Energy Agency ed., Gloucestershire, U.K.
ChemLocus, (2013) Special Report, 2013.07.29.
POSCO ICT, report (2015).
Hongin chemical, (2013) market report.
The Korea Price Research Center, (2014) price list.
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