Radiant coolers and methods for assembling same

A tube structure for use in a syngas cooler, said tube structure comprising:

• a tube cage comprising a plurality of cooling tubes defining a plurality of chevron-shaped projections, said plurality of chevron-shaped projections coupled together continuously to each said circumferentially-adjacent projection and extending circumferentially about a center axis, each chevron-shaped projection including a first side and a second side coupled together at a tip, circumferentially-adjacent pairs of projections coupled together such that a valley is defined between each said pair of circumferentially-spaced projections, each of said projection tips is positioned radially outward from each of said valleys;
• at least one heat transfer panel positioned within said tube cage and formed from a plurality of cooling tubes, said at least one heat transfer panel extends radially inwardly from a tip of one of said chevron-shaped projections towards said center axis;
• and
• a plurality of downcomers spaced radially outward of the circumferentially-spaced projections.

A radiant cooler comprising:

• a vessel shell circumferentially-positioned about a center axis at a shell radius;
• and
• a tube cage comprising a plurality of cooling tubes defining a plurality of chevron-shaped projections, said plurality of chevron-shaped projections coupled together continuously to each said circumferentially-adjacent projection and extending circumferentially about a center axis of said tube cage, each chevron-shaped projection including a first and second side coupled together at a tip, circumferentially-adjacent pairs of projections coupled together such that a valley is defined between each said pair of circumferentially-spaced projections;
• at least one heat transfer panel positioned within said tube cage and formed from a plurality of cooling tubes, wherein said at least one heat transfer panel extends radially inwardly from a tip of one of said chevron-shaped projections towards said center axis;
• and
• a plurality of downcomers spaced radially outward of the circumferentially-spaced projections.