Page 83 - Tata_Chemicals_yearly-reports-2019-20

Integrated report Statutory reportS FInancIal StatementS
Board's Report

u replacement conventional lamps /tubes with 1,800 efficient led

u Building Management system installed to control the power consumption by Heating, Ventilation and air conditioning
u Motion sensors installed on lighting
u When steam consumption not more than 50% boiler will be kept under warm-up mode
u Steam and process condensate water recycled to boiler feed water
u Saving of 10 Horsepower power by Modifying the System and eliminating one of the Sugar charging pump. In that energy
saving of 1860 KW per month
u ten numbers of Solar pole light installed in new Multiple effective evaporation area (saving of 3.2 KW/day)
u Steam Savings by changing double Mechanical Seal to Single dry Seal in15 Kl Fermentor. In that Savings of 31 kg/hr of steam

(ii) The steps taken by the Company for utilising alternate sources of energy:
• at Mithapur, the Company installed solar lighting (1 roof top 5.5. KW Solar system installed at new power plant substation
roof)
• at Mambattu, rice husk or Bio Briquette are used in place of Fossil fuel & 15% power consumed from Solar energy
• at Sriperumbudur, the Company installed 10 Solar pole light in new Multiple effective evaporation area
(iii) Capital Investment on Energy Conservation Equipments:
` in crore
Sr. No. Project description Capex cost
1. MuW-1 Body 1 evaporator replacement 7.44
2. Converted double effect evaporation to triple effect evaporation in MuW-4 plant 110.66
3. ammonia still no. 4 Stack cooler replacement 1.36
4. rotary drum Filter no.1 replacement 0.92
5. ammonia still preheater 3 & 5 replacement 2.67
6. Carbonation tower Internet of things (‘IIot’) based decision Support System 2.19
7. Building Management System 1.10
8. Motion sensor lighting/smart lighting 0.20
9. process and steam condensate recycle to Boiler Feed Water/Water treatment plant 1.01
10. Mechanical installation of pipe rack and additional cable work 0.70
11. Cost of Solar pole lights system for Multiple effect evaporator area 0.02
Total 128.27

B. Technology Absorption
(i) The efforts made towards Technology Absorption
• nano sea water technology for brine purification in soda ash plant - project under executions
• Solar salt washery project is under execution
• Implementation of Iot-based decision support system for Soda ash Carbonating tower 4, 5 & 6 efficiency improvements
• upgradation of Chloro Caustic group plant electrolyser technology under commissioning
• Sequential Simulated Moving Bed (‘SSMB’) and Multi stage spray dryer at Mambattu

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