| 摘要 |
A powdered coal pressurization method and system for coal gasification. With a sufficient weight of material, powdered material such as coal can be removed from the bottom of a column (1) under a higher gas pressure than the solids (2) which are being fed at the top of the column. To this end, and to avoid a long column height, magnetic particles such as iron spheres (3) are mixed into the coal particles to increase the mixture density. The metal is separated (4a) at the bottom and recycled (5) using liquid e.g. water. The coal is then passed to the reactor using pressurised gas. <IMAGE>
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