Discussion on the tube configuration of the reforming four-in-one furnace

U-shaped structure: The inlet and outlet collectors are both supported by spring hangers on the top of the furnace, and the collectors are connected to each other using straight pipes plus large U-shaped elbows. The weight of the entire piping system is supported at the bottom of the convection section; therefore, the steel structure is subject to considerable stress, and large-section steel members or truss beam structures should be used. The radiation tube system is capable of absorbing the vertical expansion of the pipelines outside the furnace. The burner features dual-sided combustion and generally burns only gas. During hydrotesting and pipeline purging, residues remaining inside the pipes are difficult to remove. Inverted U-shaped structure: The inlet and outlet collection pipes are mounted on rolling supports at the bottom of the furnace; these pipes are connected to each other using straight pipes along with large inverted U-shaped elbows. If the height-to-diameter ratio of the furnace tubes is too high, spring mechanisms can be used to ensure the stability of the tube array. The weight of the entire piping system is independent of the furnace’s steel frame; it is supported by supports placed on the ground, making the treatment of the steel structure relatively simple. The radiation piping system is unable to absorb the vertical expansion of the pipelines outside the furnace. The burner is located at the bottom of the furnace and can burn either oil or gas.

Very good, the reply is correct; thumbs up. I can’t give a score.

According to the standards, the positive U cannot be made very wide. Inverted U-shaped radiant furnace tubes cannot be made very long.