scholarly journals Low rank coal drying technology for decreasing electricity cost production: case study of Nagan Raya power plant

2020 ◽  
Vol 181 ◽  
pp. 03003
Author(s):  
Agus Setiawan ◽  
Zainal Arifin
Keyword(s):  
Power Plant ◽  
Technology Implementation ◽  
Power Plants ◽  
Electricity Consumption ◽  
Pilot Project ◽  
Low Rank ◽  
Low Rank Coal ◽  
Electricity Cost ◽  
Coal Drying ◽  
Drying Technology

Considering the depletion of black coal resources, utilization of low rank coal currently is emerging to meet the growing of electricity consumption globally. Some coal fired power plants urge to use the domestic low rank coal due to some financial reasons. They are several coal drying technologies have been proposed. This study analyzes the utilization low rank coal to decrease the electricity cost production at Nagan Raya coal fired power plant. The Coal Moisture Control Fluidized Bed (CMC-FB) technology is selected as a basis for both technical and financial calculation. Based on the pilot project in Fukuoka, this technology is technically feasible and well suited for Nagan Raya power plant. A financial modelling shows that coal drying technology implementation can potentially decrease the electricity cost production for the utility and also make benefits for the investor. Further research is recommended to investigate other proven technologies. Additionally the effect of coal drying implementation to the environment should be noticed.

Optimal Gas-Turbine Design for Hybrid Solar Power Plant Operation

2012 ◽  
Author(s):  
James Spelling ◽  
Björn Laumert ◽  
Torsten Fransson
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Power Plants ◽  
Solar Power ◽  
Pressure Ratio ◽  
Inlet Temperature ◽  
Electricity Cost ◽  
Conflicting Objectives ◽  
Dynamic Simulation Model ◽  
A Minor

A dynamic simulation model of a hybrid solar gas-turbine power plant has been developed, allowing determination of its thermodynamic and economic performance. In order to examine optimum gas-turbine designs for hybrid solar power plants, multi-objective thermoeconomic analysis has been performed, with two conflicting objectives: minimum levelized electricity costs and minimum specific CO2 emissions. Optimum cycle conditions: pressure-ratio, receiver temperature, turbine inlet temperature and flow rate, have been identified for a 15 MWe gas-turbine under different degrees of solarization. At moderate solar shares, the hybrid solar gas-turbine concept was shown to provide significant water and CO2 savings with only a minor increase in the levelized electricity cost.

Advanced energy saving in low rank coal drying based on self-heat recuperation technology

2012 ◽  
Vol 104 ◽  
pp. 16-22 ◽  
Author(s):  
Muhammad Aziz ◽  
Yasuki Kansha ◽  
Akira Kishimoto ◽  
Yui Kotani ◽  
Yuping Liu ◽  
...  
Keyword(s):  
Energy Saving ◽  
Low Rank ◽  
Low Rank Coal ◽  
Heat Recuperation ◽  
Coal Drying

Two-in-One Fuel Combining Sugar Cane with Low Rank Coal and Its CO2Reduction Effects in Pulverized-Coal Power Plants

2013 ◽  
pp. 130111083238004 ◽  
Author(s):  
Dong-Wook Lee ◽  
Jong-Soo Bae ◽  
Young-Joo Lee ◽  
Se-Joon Park ◽  
Jai-Chang Hong ◽  
...  
Keyword(s):  
Sugar Cane ◽  
Power Plants ◽  
Pulverized Coal ◽  
Low Rank ◽  
Low Rank Coal ◽  
Coal Power Plants ◽  
Coal Power

scholarly journals Characteristics of low-rank and medium-rank Indonesian coal using the TG-DSC method

2021 ◽  
Vol 882 (1) ◽  
pp. 012031
Author(s):  
Hariana ◽  
A Prismantoko ◽  
H P Putra ◽  
A P Nuryadi ◽  
Sugiarto ◽  
...  
Keyword(s):  
Moisture Content ◽  
Power Plants ◽  
Decisive Role ◽  
Volatile Matter ◽  
Low Rank ◽  
Low Rank Coal ◽  
Heating Value ◽  
Burning Coal ◽  
Indonesian Coal ◽  
Lower Temperature

Abstract Low-rank and medium-rank coal are dominant coal resources in Indonesia. Considering the decisive role of coal in coal-fired power plants, it is crucial to examine the combustion characteristics before burning coal in the boiler. This paper presents the effect of moisture content, heating value, and volatile matter on ignition temperature and burn out of five samples of low-rank coal and five samples of medium-rank coal using TG-DSC analysis which was carried out using LINSEIS High-Pressure STA at atmospheric pressure with an air rate of 25 ml/min and heating rate of 10 °C/min. The investigation results show that low-rank coal with the higher volatile matter has tremendous reactivity and is more flammable, and favours of burning through itself than medium-rank coal. Medium-rank coal has better combustion with short residence time because it has a lower burnout temperature (Tbo) value than low-rank coal. However, medium-rank coal burns more instantly because it has a lower temperature interval than low-rank coal. Medium-rank coal, which has fixed carbon and higher heating value, but lower moisture content, has a higher Rmax value than low-rank coal. In conjunction with these properties, it is crucial to examine the implementation in boilers.

scholarly journals Relationship between Particle Size Distribution of Low-Rank Pulverized Coal and Power Plant Performance

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Rajive Ganguli ◽  
Sukumar Bandopadhyay
Keyword(s):  
Particle Size ◽  
Power Plant ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Power Plants ◽  
Pulverized Coal ◽  
Plant Performance ◽  
Low Rank ◽  
Volatile Content ◽  
The Impact

The impact of particle size distribution (PSD) of pulverized, low rank high volatile content Alaska coal on combustion related power plant performance was studied in a series of field scale tests. Performance was gauged through efficiency (ratio of megawatt generated to energy consumed as coal), emissions (SO2,NOx, CO), and carbon content of ash (fly ash and bottom ash). The study revealed that the tested coal could be burned at a grind as coarse as 50% passing 76 microns, with no deleterious impact on power generation and emissions. The PSD’s tested in this study were in the range of 41 to 81 percent passing 76 microns. There was negligible correlation between PSD and the followings factors: efficiency, SO2,NOx, and CO. Additionally, two tests where stack mercury (Hg) data was collected, did not demonstrate any real difference in Hg emissions with PSD. The results from the field tests positively impacts pulverized coal power plants that burn low rank high volatile content coals (such as Powder River Basin coal). These plants can potentially reduce in-plant load by grinding the coal less (without impacting plant performance on emissions and efficiency) and thereby, increasing their marketability.

scholarly journals Article Review: The Policy Implementation of Waste to Energy Power Plant – Pilot Project in Surabaya, Indonesia

2020 ◽  
Vol 190 ◽  
pp. 00009
Author(s):  
Fierda Nurany ◽  
Ismail Ismail ◽  
Mohamad Ferdaus Noor Aulady ◽  
Nur Laila Hamidah ◽  
Rugi Vicente Del Castillo Rubi
Keyword(s):  
Power Plant ◽  
Policy Implementation ◽  
Communication System ◽  
Power Plants ◽  
Pilot Project ◽  
Qualitative Approach ◽  
Waste To Energy ◽  
Pilot Projects ◽  
Management Procedure ◽  
Good Policy

Indonesia government has nominated Surabaya city as one of the Indonesia pilot projects of waste to energy power plants (WEPP). The WEPP in Surabaya will start to operate in November 2019. However, to ensure this facility operates according to the regulation, the WEPP should be supported by good policy from the stakeholder. This research aims to review the policy implementation of WEPP in Surabaya pilot project based on Van Meter and Van Horn theory. The theory has several indicators that indicate good policy implementation. This research used a descriptive qualitative approach by interviewing fifteen respondents who involved in WEPP pilot project. The results suggest that the policy implementation of WEPP needs further regulation from local government about the management procedure of waste material, which converts to the tipping fee. The solution suggested from this issue is the contract refinement and the fundamental improvement of the communication system to the better WEPP.

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