Furnace Tube Arrangement for Steam Generator
AssigneeDoosan Babcock Limited
InventorChao Hui Chen
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Abstract
A furnace tube arrangement for a steam generator is described. A plurality of furnace tubes disposed longitudinally form a generally planar wall structure into which burner throats are let at least two longitudinally spaced levels in familiar manner. Burner throats at the respective levels are so disposed that a vertical mid-line of each throat at a first level is laterally offset from a vertical mid line of a corresponding throat at a second level.
Claims20
A furnace tube arrangement for a vertical tube steam generator comprising:
- a plurality of furnace tubes adapted for passage of an evaporatable flow medium disposed generally vertically to form a generally planar structure;
- at least one burner throat let into the planar structure at at least two vertically spaced levels, each burner throat defined by a throat wall into and around which tubes in the vicinity of the burner throat pass in order to leave the burner throat open;
- characterised in that the burner throats at the respective levels are so disposed that a vertical mid-line of a throat at a first level is laterally offset from a vertical mid line of a corresponding throat at a second level.
A steam generator comprising a combustion chamber having a polygonal cross-section defined by a plurality of connected combustion chamber walls at least one of which has a furnace tube arrangement in accordance with claim.
Dependencies are inferred from the claim text.