Large Volume Inorganic Chemicals - Ammonia ... - ammk-rks.net

Chapter 99.5 BAT for AN/CANBAT is to apply the common BAT given in Section 1.5.BAT for storage is to apply BAT given in [5, European Commission, 2005].BAT is to optimise the neutralisation/evaporation stage by a combination of the followingtechniques:• using the heat of reaction to preheat the HNO 3 and/or to vapourise NH 3 (see Section 9.4.1)• operating the neutralisation at an elevated pressure and exporting steam (see Sections 9.4.1)• using the generated steam for evaporation of water from ANS (see Section 9.4.3)• recovering residual heat for chilling process water (see Section 9.4.2)• using the generated steam for the treatment of process condensates• using the heat of the reaction for additional water evaporation.BAT is to effectively and reliably control pH, flow and temperature.BAT is to improve environmental performance of the finishing section by one or a combinationof the following techniques:• apply plate bank product cooling (see Section 7.4.5)• recycling of warm air (see Sections 7.4.6 and 9.4.5)• select proper size of screens and mills, e.g. roller or chain mills (see Section 7.4.7)• apply surge hoppers for granulation recycle control (see Section 7.4.7)• apply product size distribution measurement and control (see Section 7.4.7).BAT is to reduce dust emissions from dolomite grinding to levels