Efficient and energy-saving system and process for recycling waste heat of production, and method for large-scale production of silica gel

An energy-saving system for recycling waste heat of production,

• comprising a wet-steam waste-heat recycling module configured to recycle heat of a hot and wet steam produced during a drying process of a material, wherein the wet-steam waste-heat recycling module comprises a conveyor belt configured to carry the material, a plurality of dryers, a compressor, and a heat exchanger, wherein the conveyor belt passes through the plurality of dryers in sequence, each of the plurality of dryers is connected to the compressor and the heat exchanger through a first pipeline, and the hot and wet steam produced by the compressor and the heat exchanger is reused for drying the material;
• and
• the wet-steam waste-heat recycling module specifically comprises a preheating conveyor belt, a first dryer, a second dryer, a third dryer, a first compressor, and a first heat exchanger, wherein the preheating conveyor belt passes through the first dryer, the second dryer and the third dryer in sequence, each of the preheating conveyor belt, the first dryer and the second dryer is connected to the first compressor through a second pipeline, and each of the second dryer and the third dryer is connected to the first heat exchanger through a third pipeline;
• and the material is silica gel.