61 We optimized energy utilization and reduced our environmental impact through the implementation of waste heat recovery systems. Preheaters installed in our coal-fired boiler and Multiple Effect Evaporator (MEE) efficiently capture and repurpose waste heat for preheating feedwater, significantly enhancing energy efficiency. This approach has led to a reduction of 1.1 MTD of coal consumption by recovering condensate and mixing it with boiler feedwater. Additionally, the steam condensate recovery system has reduced our greenhouse gas emissions by 733 tCO2e per annum. We adopted an innovative approach to completely recover flash steam and condensate at our Zero Liquid Discharge (ZLD) ETP. By installing a Pressure Powered Pump (PPPU), we have eliminated condensate loss, increased feedwater temperature, and improved boiler efficiency, resulting in significant condensate savings. To further reduce carbon emissions, we are actively exploring the substitution of coal and diesel oil with natural gas for steam and power generation. This substitution approach is expected to lower GHG emissions by approximately 50% from boilers and diesel generators, contributing to an overall 15% reduction in company-wide emissions. In our thermic fluid heater, we have switched from using furnace oil to high-speed diesel as fuel. This switch has been made to achieve higher energy efficiency and reduce carbon emission intensity. Our cross- functional team is diligently working with OEMs and gas suppliers to bring this project to fruition. Non-CO2 greenhouse gases such as methane, nitrous oxide, process emissions and VOCs trap more heat within the atmosphere than CO2. These gases are emitted from a broad range of sectors and sources namely industrial processes, combustion of fossil fuels, agricultural sources, wastewater and waste sector. Mitigation and containment of these emission need to be addressed on priority to reduce the environmental impact on the health and safety of the workers and the environment ( Source: United Nations Convention on Climate Change). Practices followed at production sites - • Production blocks, dispensing area, acid storage tanks are equipped with multistage scrubbers which curbs the acidic/alkaline emissions from reaching the atmosphere. • Critical manufacturing operations are carried out through closed systems and the reactors, vacuum systems are equipped with primary and secondary condensers with RT water and +5°C chilled water utility to prevent emission of VOCs • Our coal storage shed is equipped with water mists dust suppression system, bag filter & cyclone separator is provided for boiler coal handling plant & stacks, to mitigate emissions of dust and particulate matter. • Warehouse and clean rooms are provided with dust collectors. • Solvents are handled with the help of transfer pumps and closed piping networks to minimize handling losses. • Installed state of the art containment systems to contain the pollutant concentrations (ambient air concentration) up to a level of ~0.1 µg/m3 • Installed advanced containment systems protect the employee as well as the environment by limiting the concentration of pollutants in ambient air around 1 to 10 µg/ m3 - Powder Transfer System (PTS), Iso-charge, Glove boxes, Drum containment system (DCS) and Dispensing isolator • Fume hoods installed at ETP- HTDS effluent collection tanks to prevent VOCs emissions • Dedicated controlled temperature storage area are there for chemicals that may cause odour nuisance if stored openly, dedicated addition r eceiver are provided in production blocks to charge odour causing chemicals, High TDS effluent collection tanks in ETP are equipped with canopy fume hoods to reduce odour. • Installed vent condenser for storage tank, which stores low boiling solvent to minimize vaporization loses during storage. Low boiling solvents (Example: Methylene Di Chloride) tanks are equipped with condensers with brine circulation to avoid fugitive emissions. • All bulk storage tanks are equipped with the Nitrogen padding system and back pressure relief valves on the vent lines to minimize VOC emissions. • 90% of purifications are performed through the Biot age, Combi-falsh, preparative, SFC chromatographic purifications methods, it will help minimum usage of solvents and min exposure of the LEL vapors. • All analytical equipment drains are rooted through vap-lock system to minimize LEL vapors in the laboratory. • All the laboratory reactions and work up should be performed under fume hoods which are validated for containment systems to concentrations (ambient air concentration) up to a level of ~0.1 µg/m3 contain the pollutant Waste heat recovery system Emission Control Mechanisms
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