Low-grade coal slurry production method, low-grade coal slurry production device, and low-grade coal gasification system
A technology of low-grade coal and a manufacturing method, which is applied in the manufacture of combustible gas, gasification process, and granular/powder fuel gasification, etc., can solve problems such as decreased energy efficiency
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[0059] [Example]
[0060] (The first step)
[0061] A hammer crusher was used to coarsely pulverize the lignite (Lignite from Australia (Loy Yang lignite)) with the properties shown in Table 1 so that the particles with a particle size of 3 mm or less were 90% by weight or more (the ones that passed through a sieve with a mesh size of 3 mm The particles are more than 90% by weight of the whole lignite). The coarsely pulverized lignite was put into an indirect heating type dryer (a small steam tube dryer manufactured by Kawasaki Heavy Industries) and dried under the conditions of 0.1 MPa and 180°C for one hour to obtain dry lignite with a total moisture of 10% by weight. The steam discharged from the indirect heating dryer is cooled by a water-cooled condenser and recovered as condensed water.
[0062] [Table 1]
[0063] .
[0064] (Second step)
[0065] After adding condensed water and polystyrene-based dispersant to 3 kg of dry lignite, it was put into a wet ball mill (φ300mm×L300mm...
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