Waste heat recovery from wet processes in textile production

Many wet processes in textile production, including dyeing, resulting in large amounts of hot wastewater as effluent. The heat energy, which is usually wasted, can be recovered and used again for preheating of process water, apart from other applications. 

 

Stakeholders

Energy management professionals

Production professionals

Textile industry sustainability professionals

Vital Stats

How does it work?

Wet processes refer to processes mainly in the fabric production part of the textile value chain. These wet processes, which comprise multiple stages, are used to pretreat the fabric and prepare it for drying, and for finishing off the dyed fabric. Many of these wet processes give out significant amounts of hot effluents whose wasted energy can be recovered and reused within the factory.

Sustainability benefits

Waste heat recovery systems help to enhance efficiency on a large scale, like in large manufacturing facilities and production plants. Redirecting waste gas and reusing it as a heat source can reduce the waste produced by a facility and released into the atmosphere.

Highlights/USP

Reducing the temperature of the effluent could also make it more amenable to be treated by micro-organisms in conditions where bioremediation of textile effluents is being explored or are practiced.

Stage of commercialization

Commercialized

Types of professionals who can improve the solution

Mechanical engineers, Thermal engineers

Specifically relevant to any geography?

Decarbonization Potential

Moderate-High

Value Chain

Textile yarn ,

Carbon Focus

Solutions

Projects

Innovation

Launchpad

Topview

Debate

Library

Celebrate

Support Organisations

Web Resources

POZZI’s advanced system for recovering heat from waste effluents

Textile wet processing is one of the main sources of pollution in many developing countries. The typical processes are high energy and water consuming with an enormous discharge of hot polluted wastewater. The wide variety of POZZI LEOPOLDO products ranges from dyeing machines to chemical dispensing systems and from fixing and conditioning machinery to heat recovery units. POZZI’s RCR is the first rotating heat exchanger ever built to successfully recover heat from heavily polluted water effluents.

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Design of heat recovery system for dye effluent in textile industries

Heat transfer is commonly encountered in engineering systems and other aspects of life and one does not need to go very far to see some application areas of heat transfer. Many ordinary household appliances are designed in whole or in part, by using this principle of heat transfer. As the dyeing process is over the hot water is drained. This hot wastewater instead of being wasted and before going to drained we can retract and recover the heat from this hot waste water and give to the cold water so as to raise its temperature by effectiveness of our heat recovery system.

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