Shrimp drying waste heat recovery heat exchanger

During the drying process of shrimp and seafood, moisture discharge and waste heat recovery are key steps to improve drying efficiency and reduce energy consumption. Plate heat exchangers can play an important role in this process, as they can efficiently handle moisture removal issues, recover waste heat, and improve the overall energy utilization efficiency of the system.

Moisture and waste heat issues during the drying process of shrimp and seafood

Moisture removal requirements:

During the drying process of shrimp and seafood, a large amount of moisture evaporates from the product. The dehumidification system needs to promptly remove this moisture to avoid excessive humidity in the drying room, which may affect the drying effect. Moisture usually carries a certain amount of heat, and direct discharge can cause waste of heat energy.

Waste heat recovery:

High temperature moisture contains a large amount of waste heat, which can be recovered through appropriate heat exchange equipment, reducing energy loss and improving the energy efficiency of the drying system.

Application of Plate Heat Exchanger in Seafood Drying

Moisture removal treatment:

Plate heat exchangers can be used to handle moisture emissions. When the high humidity exhaust gas discharged from the dryer passes through the plate heat exchanger, the heat in the exhaust gas is transferred to fresh air for preheating, thereby reducing the exhaust temperature and improving the dehumidification efficiency. This can recover some heat energy and reduce energy loss without affecting dehumidification.

Waste heat recovery:

Plate heat exchangers can efficiently recover waste heat from exhaust gas and use it for preheating air intake or other process flows. For example, transferring the heat from exhaust gas to fresh air and then entering the drying equipment again not only reduces the heating demand of fresh air, but also improves the energy efficiency of the entire system.

Waste heat can also be used for producing hot water or steam supply in other processes through plate heat exchangers, further achieving multiple energy utilization.

Typical process flow

Hot air and moisture treatment:

In the shrimp and seafood dryer, hot air is used to dry seafood, generating a large amount of moisture. When moisture is discharged through the dehumidification system, it first enters the exhaust side of the plate heat exchanger.

Heat transfer and preheating:

The heat in the moisture is transferred to the inlet air or other process fluids (such as cold air or cooling water) through heat exchange in the plate heat exchanger. After the temperature of the discharged moisture decreases, the humidity will also decrease, making the dehumidification process more efficient.

Reuse of thermal energy:

The recovered heat can be used for various purposes: preheating fresh air into the drying room to reduce the burden on the heater; Or used for other process flows, such as heating water or steam supply, to further reduce energy consumption.