Cooled grate block
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United States of America Patent
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Apr 8, 1997
Grant Date -
N/A
app pub date -
Nov 17, 1995
filing date -
Nov 17, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
To cool a grate block which forms a part of a grate for plants for the thermal treatment of waste material, a closed cooling space in the grate block below an upper wall supporting the waste material is filled with cooling water. Water feed lines and water drainage lines pass through the cooling space, end in the cooling space, and respectively have a plurality of outlet and inlet openings, so that, in addition to an effective cooling which greatly reduces the temperatures, an optimum distribution of cold water and hot water also takes place in the cooling space. Since thermal expansions in the material are dispensed with, only a few screwed-together grate blocks can form a grate-block row. The assembly and exchange of grate blocks are simpler and an undesired amount dropping through the grate between the grate blocks is eliminated to a great extent. Moreover, the grate blocks can be produced from a less high-alloy material.
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