New evaluation indexes for steaming coal.

概要

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Although the consumption of coal as a fuel for general industry has been rapidly increased recently in Japan, most, more than a hundred, of coal are imported from foreign countries. A coal firing boiler is usually designed for various coal, but it is important for users to evaluate coal properly to combust it efficiently without any trouble. Conventional evaluation methods were developed for eastern coal in USA and not suitable for Japanese actual situation. Therefore, we, Idemitsu, have developed new evaluation indexes for combustion, handling and so on. We can evaluate the combustibility more precisely than current fuel ratio analysing the combustion procedure of maceral in a experimental furnace and also estimate the NOx emission performance in a commercial boiler with "NOx Index" which was newly developed by Idemitsu. Furthermore, we introduce new indexes for handling property, ash slagging potential, electrostatic precipitability and grindability. The development of clean and high efficient coal combustion technology is also introduced to solve the environmental problem over the world.
一般社団法人日本エネルギー学会の論文