毕业设计（论文）说明

Sintering process is one of the main sources of nitrogen oxide emissions from the steel

industry, which accounts for over 50% of NOx emissions from iron and steel industry, the
total emissions of nitrogen oxides. Reducing nitrogen oxide emissions of sintering process for
the protection of the environment, sustainable development of society is important.

By changing the distribution of fuel in the pellet coating granulation process tostudy the

effects of the distribution of fuel on nitrogen oxide emissions .Experimental results show that
the distribution of fuel pellets have a great impact on nitrogen oxide emissions. The NOx’s
amount of pellets that 60% of fuel in the inner layer which were produced in the heating
process compared with the full mix pellets, reduced 50.38%. The NOx’s amount of the full
mix pellets which were produced in the heating process compared with pellets that100% of
fuel in the inner layer, reduced 50.38%. Also the affect of pellets’ alkalinity on nitrogen oxide
emissions were studied.

Under the same experimental conditions, alkalinity of 1.8 pellets in the heating process

discharge NOx at least, followed by basicity of 1.5 pellets, alkalinity of 2.4 discharge NOx at
most.

the distribution of fuel; alkalinity; nitrogen oxide emission