TED Total Energy Management
Proposal for Energy-Saving Systems
We propose a comprehensive energy-saving systems for gravure printing and converting plants that achieves significant energy savings by effectively utilizing diluted solvents from production lines as fuel.
This total system consists of the TGCS (TED Gas Concentration Control System), exhaust gas treatment equipment, an ion-absorption total heat exchange energy-saving systems, zeolite concentrators, and waste heat recovery boilers.
This total system consists of the TGCS (TED Gas Concentration Control System), exhaust gas treatment equipment, an ion-absorption total heat exchange energy-saving systems, zeolite concentrators, and waste heat recovery boilers.
Example of the System Configuration
| ① TGCS | The exhaust gas from the drying units of printing machines and dry laminators is reduced in volume and concentrated through TGCS (TED gas control system) At the same time, the vapor is reduced by about one-third that is used for heating the drying units. |
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| ② Total Heat Exchanger | Low-concentration VOC-containing exhaust air from gravure printing machines, dry laminators, and printing room air-conditioning systems, which has been conditioned to appropriate temperature and humidity, is introduced into a total heat exchanger. Meanwhile, outdoor air passes through the total heat exchanger before being supplied to the air handling unit. Through this process, the supply air is cooled and dehumidified in summer, and heated and humidified in winter, significantly reducing the energy consumption of the air-conditioning system. At this stage, solvent components contained in the local exhaust and air-conditioning exhaust are not adsorbed by the total heat exchanger, but are instead introduced into a zeolite concentration device as low-concentration VOCs. |
| ③ Concentrator | The low-concentration VOCs passing through the heat exchanger are introduced into the zeolite concentrator, where they are regenerated and concentrated into exhaust gas at 15 times the original concentration. The regenerated air volume is one-fifteenth of the original. Meanwhile, the local exhaust and air-conditioning exhaust are discharged into the atmosphere as purified gas. |
| ④ RTO | The exhaust of ➀ and ➁ is led to RTO(Regenerative Thermal Oxidizer), where VOCs in the exhaust are burnt at 850℃. At this stage, the RTO maintains a temperature of around 850℃ and begins a self-sustaining combustion state (zero fuel consumption). Furthermore, surplus heat is supplied to the waste heat boiler as hot gas at 850℃. |
| ⑤ Waste Heat Boiler | The waste heat boiler generates steam by utilizing the gas from ④. |
| ⑥ Absorption chiler | The steam generated from ⑤ is utilized as a heat source for production equipment, for heating and humidifying air conditioning systems, and as a heat source for an absorption chillercontributing to energy savings throughout the factory. |