Coal pyrolysis is the thermal cracking process in inert gas condition, to produced gas, liquid and solid product. Quantity and quality product will effected by condition of operation.
Pyrulysis process to make use of Kalimantan (KPC) in the atmospheric reactor in inert of nitrogen gas as inert with flow rate gas is 350 ml/minute, with measurement of particle is 6/10, 4/6 and 2/4 mesh, to be done at temperature condition 400 – 700 oC and weight of feed 2 kilogram, respectively.
It can be concluded that condition of nitrogen inert and fed with step by step can the probabilities limited of internal secondary reaction and effective enough to resist external secondary reaction, it is showed in the increasing of tar production and decreas of gas product, specialy of particle 4/6 and 2/4 mesh with operation temperature higher 600 oC and effectiveness to resist of thermal secondary reaction for 6/10 mesh. The effect temperature to grow into gas product in the measure of particle 6/10 mesh.
The yield of char, tar and gases depends on temperature and particle size. The maximum yield tar was obtained at temperature 500o C with particle size 4/6 mesh and the maximum yield gas was obtained at temperature 700o C with particle size 6/10 mesh are 12,4 % and 20.74 % respectively. The concentartion of gases will increase with increasing temperature, but will decrease with increasing particle size. The Atmosphere of nitrogen inert of influence for the higher the particle size at temperature above 500o C, the less gas product, but more tar, were obtained
