Division BAT 3
United Kingdom
In order to improve overall environmental performance, BAT is to ensure stable process operation by using a process control system together with a combination of the techniques given below.
| Technique | |
|---|---|
| a | Inspect and select input materials according to the process and the abatement techniques applied |
| b | Good mixing of the feed materials to achieve optimum conversion efficiency and reduce emissions and rejects |
| c | Feed weighing and metering systems |
| d | Processors to control material feed rate, critical process parameters and conditions including the alarm, combustion conditions and gas additions |
| e | On-line monitoring of the furnace temperature, furnace pressure and gas flow |
| f | Monitor the critical process parameters of the air emission abatement plant such as gas temperature, reagent metering, pressure drop, ESP current and voltage, scrubbing liquid flow and pH and gaseous components (e.g. O2, CO, VOC) |
| g | Control dust and mercury in the exhaust gas before transfer to the sulphuric acid plant for plants including sulphuric acid or liquid SO2 production |
| h | On-line monitoring of vibrations to detect blockages and possible equipment failure |
| i | On-line monitoring of the current, voltage and electrical contact temperatures in electrolytic processes |
| j | Temperature monitoring and control at melting and smelting furnaces to prevent the generation of metal and metal oxide fumes through overheating |
| k | Processor to control the reagents feeding and the performance of the waste water treatment plant, through on-line monitoring of temperature, turbidity, pH, conductivity and flow |