Experimental Research on Combustion of Petroleum Coke Mixed with Coal Powder

On the basis of combustion characteristic of soft coal and petroleum coke and mixed-grinding characteristic, the combustion characteristic of petroleum coke mixed with coal powder was experimented on the equipment in which the quantity of burning-coke powder is 200 kg/h. The results show that the pyrolysis characteristic of petroleum coke is similar to that of anthracite and its combustion characteristic to that of deficient coal. In the storage-style and steel ball-grinding system, when the mixed quantity of petroleum coke is controlled within 30~0_0, the material does not adhibit the abrader and in the process of transportation, coal powder and coke powder are rarely separated. Thus it takes on favorable grinding characteristic. In the experimental condition, when petroleum coke burns with coal powder, the ignition characteristic rarely changes, but with the increase of the mixed quantity of coke, the mechanical loss because of incomplete-burning (it is mainly carbon-content of ash) increases, which directly influences the combustion efficiency.