Abstract
Coal slurry technology has been developed in order to dissolve the demerit of bulk handling and promote the utilization of coal since the Oil Crisis. Recently, this technology has been watched with much interests as an alternate fuel. Especially, CWM (highly Loaded Coal Water Mixture) is considered as one of the promising coal slurry technologies in future, because it is economical and easy to utilize.
Electric Power Development Company (EPDC) has started the development of CWM technology since 1980. After the fundamental test, 1.5t/h CWM preparation pilot plant test was started in 1983.
The following techniques have been developed by EPDC.
1. Save the pulverizing energy by two stage preparation system.
2. Estimation of coal slurriability.
3. Effect of dispersant to slurry.
4. Stabilization method of CWM and estimation of CWM stability.
In U.S.A. and Sweden, the development has been started earlier than us. Now the big projects are going on in Canada, USSR and Italy.
These projects are explained briefly.
