rclipBush End plate and circlip are supplied by us B4CV-13-C Bevel-helical gear Reduction Box B4

Flender/Flender Gear Units/Bevel-helical gear Reduction Box B4

the results, documentationlfinal report The following were to be investigated in detail - Metering and injection of the ammonia into the exhaust gas stream,mixing with the exhaust ammonia metering device gas 1 Ammonia loss as function of the added NH3, the injection conditions and the essential operating data, such as the oxygen content and temperature of the exhaust gas, the use of fuel and the melting performance. Formationhate of formation of ammonium sulphate and/or ammonium hydrogensulphate as result of surplus ammonia. Deposits and contamination of the components and units downstream of the furnace caused by the above-mentioned sulphates. Attack ordcorrosion of the^ aforesaid components and units, in particular the refractory materials, by NH3 and/or the above-mentioned sulphates. Minimum NH3/NO, ratio with maximum NO, re,duction (with view to the permissible emission limit), inter alia with theaim of minimising NH3 consumption and avoiding NH3 loss. The following were freely selectable within the framework of the trials: the manner of heating the water glass furnace (heavy oil furnace with optional steam or natural gas atomisation), the type of atomiser lance (selected from 4 alternatives), and the injection site in the exhaust gas system (downstream of re enerative chamber 1 or . Using predetermined combination of theaforesaid parameters,$eairsurplus ofthe furnacecould essentially bevaried by changing the amount of combustion air; as result, the O2 content and the raw gas NO, content could also be varied, as well as the quantity of ammonia injected and, thus, the NHJNO, ratio. By chan ing the furnace firing times, the mean exhaust gas temperature at the injection point coulc?also be changed to certain extent. This did not, however, constitute steady-state oper- ating condition. 3. Results The results of the investigations can be summarised as follows: 1. 2. In principle, the high-temperature reduction (SNCR) of NO,, ba