Pipestill heater and method for controlling combustion in pipestill heater

摘要

A pipestill heater capable of increasing heat efficiency without using a large-sized oxidizing agent heating unit. The pipestill heater includes a radiation section (101) and a convection section (102) for preheating process fluid by exhaust gas of an elevated temperature discharged through a gas discharge path (109). A combustion device (1) including a combination of a burner (15) and a heat exchanger is arranged on a furnace floor (103) constituting a part of a furnace wall. The heat exchanger includes a regenerator (8) heated by exhaust gas to heat an oxidizing agent and a duct structure (22) including an oxidizing agent passage (24) and an exhaust passage (23). The regenerator is rotated relative to both passages. Exhaust gas is guided through both a gas discharge path (109) and the exhaust passage.