Modular tube unit for fluidized bed boilers

Patent · Tue Jun 10 04:00:00 EDT 1986

OSTI ID:5530966

Erlich, S

An in-bed tube system is described for a fluidized bed boiler, comprising, in combination, at least one fluidized-bed boiler forming a combustion chamber containing the fluidized bed and having a front wall forming an opening to the fluidized bed, a source of boiler feed fluid, a feed fluid line proximate to the front wall and connected to the source of feed fluid, a steam line proximate to the front wall, tube means mounted to the front wall at the opening, positioned in the fluidized bed, and connected to the feed fluid line and to the steam line, the tube means being for passing the feed fluid from the feed fluid pipes into the fluidized bed for conversion to steam, and for passing the steam from the fluidized bed to the steam line, mounting means for quickly attaching and detaching the tube means to and from the front wall of the boiler, first connecting means positioned between the the tube means and the feed fluid line for quickly attaching and detaching the tube means to and from the feed fluid line, connecting means positioned between the tube means and the steam line for quickly attaching and detaching the tube means to and from the steam line; the tube means including an inlet feed fluid manifold connected to the feed fluid line, an outlet steam manifold connected to the steam line, a cover member capable of being removably attached to the front wall around the periphery of the opening, and in-bed tubes having inlet and outlet portions positioned in the fluidized bed, the in-bed tubes being connected at the inlet portions to the inlet feed fluid manifold and at the outlet portions to the outlet steam manifold and extending through and sealably mounted to the cover member at the inlet and outlet portions.

• Assignee: NOV; EDB-86-137599; NOV-85-015038
• Patent Number(s): US 4593652
• OSTI ID: 5530966
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
BOILERS
COMBUSTION CHAMBERS
COVERINGS
DESIGN
FLUIDIZED BED BOILERS
MODULAR STRUCTURES
POSITIONING
STEAM LINES
WALLS