| 摘要 |
<p>PURPOSE:To keep a uniform heating function and reduce the coefficient of excess air to improve the thermal efficiency by installing a number of catalytic burner on the side surface of combustion furners on the side surface of combustion furnace and providing a radiation heating plate on the front surface of each catalytic burner. CONSTITUTION:A fuel (d) and air (e) are mixed in a diffuser 26 and burn at a combustion catalyst 21 through an igniter 19. A gas emitted from the combustion catalyst layer 21 heats a radiation heating plate 22 to a high temperature to increase a furnction to conduct rediation heat. Further, the combustion high-temperature gas is uniformly flowed into the furnace. In this manner, the provision of the radiation heating plate 22 causes the burner outlet gas to have a high temperature and shortens the flame length. Hence, it becomes possible to largely shorten the interval between the heating pipe 2 and the furnace wall and to make the construction of the furnace compact. This interval can be determined by the number of the catalytic burners 13. The gas flowing into the furnace heats the convection heating pipe 2 and a heat recovery heating pipe 4, and thereafter is exhausted as a combustion exhaust gas (a).</p> |
