THE EFFECT OF ADDING CANDLENUT SHELL INTO THE LOW-RANK COAL ON COMBUSTION PERFORMANCE
Journal Title: Journal of Mechanical Engineering Research & Developments (JMERD) - Year 2019, Vol 42, Issue 1
Abstract
The potential of coal in Indonesia approximately 151 billion tons, there are 61% of Low-rank coal (LRC), which has a Higher Heating Value (HHV) of 5,100-6,100 kcal/kg and Moisture content of 30-40%. Combustion of the LRC contributes to global warming due to its CO2 emission. The LRC has also a low igl (CNS). The combustion performance of LRC mixed with CNS was investigated by determining its combustion efficiency and the impact on combustion gas emission including Carbon Dioxide (CO2), Carbon Monoxide (CO), Nitrogen Oxide (NOx), and Sulfur Dioxide (SOx). This study was conducted by adding CNS into LRC of 10%, 30%, 50%, 70%, and 90%, respectively. The characteristic of the specimen is obtained from proximate and ultimate analysis based on ASTM standard. The combustion performance of mixing LRC and CNS was investigated in the electric furnace combustors with the burn-out temperature of 500, 625, 750, and 875 oC respectively. The combustion oxidant used oxygen which was supplied constantly. The combustion gas emissions were measured by using Thermoline MRU Air Fair VARIO plus test apparatus. The result shows that the addition of CNS into the LRC improves combustion performance significantly. The results show that the addition of 10% of CNS into the LRC yield the combustion efficiency varies in the range of 0.92 – 14.42%. The addition of CNS into the LRC has a significant impact on reducing CO2, CO, NOx and SOx emissions. For example, adding 10% CNS into the LRC can reduce SOx emission of 16.80%, and adding 90% CNS of 80.67% with combustion temperature of 500 oC. Improving the combustion performance by increasing combustion efficiency and reducing gas emissions will reduce global warming and also decrease slagging and fouling of combustion apparatus due to decrease of Sulfur content in the CNS and LRC mixtures.
Authors and Affiliations
Daud Patabang, Effendy Arif, Jalaluddin . , Nasruddin Aziz
Keywords
Related Articles
- EP ID EP473913
- DOI 10.26480/jmerd.01.2019.116.121
- Views 54
- Downloads 0
THE FAULT LOCATING SYSTEM OF THE HIGH-SPEED MAGLEV TRAIN
Analyzing and researching the levitation and guidance sensor fault location system of high-speed maglev train, we developed an offline testing method of sensor fault location system, which can carry on the fast positioni...
CALCULATION OF CYLINDRICAL PRODUCTS MADE OF COMPOSITE MATERIALS USING WRAP TECHNOLOGY
The paper has developed the calculation method of composite structure design according to wrap technology, the main results have been achieved: (i) – Constructing a mathematical model of composting tank under pressure of...
ANALYSIS AND INNOVATION ON RDF DRYER MACHINE
The function of vibration is to smooth the flow of hot air into the Refuse Derived Fuel (RDF) which is put on the drying trays, so during drying process the door of drying chamber are not necessarily to be opened. The vi...
PROPOSAL OF SOME ADVANCED TECHNOLOGY METHODS IN THE ASSEMBLY OF THE SHAFT SYSTEM – MAIN ENGINE ON THE SMALL CARGO SHIPS
In recent years, along with the strong development of science and technology, many new construction methods have been applied in the shipbuilding industry for high technical efficiency, shortening construction time and r...
TESTING AND ANALYSING THE GRINDING UNIFORMITY OF POLYMER PRODUCTS
This work aims to improve the uniformity of the grinding polymer materials (recycling of thermoplastic polymers) and reduce the power consumption of the grinding process for the polymer recycling process. The uniformity...