| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an efficient, highly safe, and low cost degreasing method which prevents the explosion of a combustible gas generated from the degreased substance containing organic materials in the insides of a degreasing furnace, a sintering furnace, and an exhaust system, and reduces the heat loss by the exhaust gas discharged to the exhaust system. <P>SOLUTION: In this degreasing method, the explosion of combustible gas G2 in the degreasing furnace 10 or the exhaust system (exhaust damper 12b, exhaust duct 11b) is prevented by controlling the oxygen concentration (oxygen concentration in furnace) in the temperature range of generating the combustible gas G2 by thermal decomposition of organic materials, in the degreasing furnace 10 not higher than the specified concentration, and the heat loss by exhaust gas G3 discharged to the exhaust system (exhaust damper 12b, exhaust duct 11b) is reduced by controlling the concentration of the combustible gas G2 (combustible gas concentration in the furnace) in the degreasing furnace 10 in a specified concentration range. <P>COPYRIGHT: (C)2007,JPO&INPIT |
