07 Feb Goal 7: AFFORDABLE AND CLEAN ENERGY
Sanguan Wongse Group – Sanguan Wongse Energy Co,.LTD (SWE), Korat Bio-Energy Co,.LTD and Korat Energy Plus Co,.LTD are collaborated to utilise both water and cassava pulp waste as raw material for biogas production. This initiative minimises greenhouse gas emissions and energy cost, adding value to waste materials whilst promoting sustainable coexistence, addressing environmental concerns. The anaerobic biogas system was designed to optimise the processing of raw materials, producing over 50 million cubic meters and replacing the use of fuel oil up to 10 million litres annually. The remaining was also utilised for the generation of electricity for internal use and sold to regional power utilities.
Gas Engine generator is employed within the organisation to utilise natural gas and biogas to generate electricity, which generates over 70 million kilowatts. To mitigate the pollutant emission, the cleaning process of biogas involves moisture reduction and hydrogen sulfide gas for them to become environmentally benign once it enters through the exhaust during the production.
The steam produced from the exhaust emissions of the power plant’s engine cooling system, which reaches temperatures exceeding 400 degrees Celsius, is directed into a Heat Recovery Steam Generator (HRSG) system. In this process, the high-temperature steam circulates, exchanging heat with the leftover hot water from the boiler. This exchange results in the production of steam once again, which is then reused in the starch manufacturing process. This innovative approach allows for the recovery and reuse of steam, contributing to a more sustainable operation. Additionally, it helps offset the use of fuel oil by saving over 1 million liters annually.
- Cold water
In the factory, the hot water and hot steam generated from the engine operation for electricity generation and various manufacturing processes with elevated temperatures are utilised in the production of chilled water through an Absorption Chiller (ABS) system. In this process, the hot water and steam exchange heat with the chemical substances in the ABS system, resulting in the generation of chilled vapor, which is transferred to the chilled water source used within the organisation. This minimises the reliance and consumption on electrical energy for conventional cooling systems whilst enhancing the sustainability and resilience of the cooling system within the organisation.