Proximate and The Calorific Value Analysis of Brown Coal for High-Calorie Hybrid Briquette Application

5th International Conference on Theoretical and Applied Physics 2015

Hasan, Erzam Sahaluddin^1 ; Jahiding, Muhammad^1 ; Mashuni^2 ; Ilmawati, W.O.S.^1 ; Wati, Wa^1 ; Sudiana, I. Nyoman^1

Department of Physics, Faculty of Mathematics and Natural Sciences, Halu Oleo University, Indonesia^1

Department of Chemistry, Faculty of Mathematics and Natural Sciences, Halu Oleo University, Indonesia^2

关键词: Ash contents;    Cassava starch;    Castor oil plants;    Coal briquettes;    Coal sample;    Fixed carbons;    Starch adhesives;    Volatile matters;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/846/1/012022/pdf
DOI  :  10.1088/1742-6596/846/1/012022

来源: IOP

【 摘 要 】

A study has been conducted about the quality of young coal (brown coal ) briquettes from North Kolaka to determine the effect of varied adhesive on the proximate characteristics and calorific value. The young coal briquettes were made by using adhesives of starch, cassava starch and Castor oil plant starch at a concentration of 5 to 15% of the total mass. The grain size of young coal and the adhesive used were 60 mesh and 100 mesh, respectively. The samples were molded in a cylindrical mold with a diameter of 2.5 cm and a high of 6 cm, and with a pressure of 100 kg/cm2. After having been compacted, the young coal samples were then analyzed proximately i.e. moisture content, volatile matter, ash content and fixed carbon, as well as their calorific values calculation. The results showed that the increase of the adhesive could tend to increased the water content and volatile matter, but reduced the ash content, and the fixed carbon tend to constant except coal briquettes using starch adhesive it were increased. The calorific value of the young coal briquettes increased for all kinds of adhesives when the adhesive increased. The calorific value per one gram ranged from 3162.7 cal/g to 4678.7 cal/g. The highest calorific value, 4678.7 cal/g, was observed at the adhesive of 15 % of starch. The characteristics of young coal can be used as a raw material for making high-calorie hybrid briquettes.