Nondetachable Spiral Plate Heat Exchanger

Among the various types of heat exchangers manufactured by Wuxi Hongdinghua Chemical Equipment Co., Ltd., the nondetachable spiral plate heat exchanger is often selected by customers.

The structural characteristics of the nondetachable spiral plate heat exchanger:

The nondetachable spiral plate heat exchanger is formed by rolling two parallel thin carbon or stainless steel plates, forming a pair of spiral flow channels that are separated from each other. The cold and hot fluids flow in two channels separated by a spiral plate as the heat transfer surface. A channel spacer is welded between the two plates to maintain the distance between the channels and also increase the stiffness of the spiral plate. A central partition plate is installed in the center of the heat exchanger to separate the two spiral channels. There are cover plates or heads welded at the top and bottom, as well as inlet and outlet pipes for two fluids. Generally, one pair of inlet and outlet is located on the circumferential edge (the connecting pipe can be tangential or radial), while the other pair is located on the axis. All end channels are welded and sealed, with good sealing performance.

Application of nondetachable spiral plate heat exchanger:

It is suitable for industries such as chemistry, petroleum, solvents, pharmaceuticals, food and beverage, machinery, textiles, metallurgy, steel rolling, coking, etc. It can perform vapor-vapor heat exchange, gas- liquid heat exchange, and liquid- liquid heat exchange, and is also suitable for high viscosity medium that require heat exchange under high temperature or high pressure conditions to achieve process requirements such as cooling, heating, condensation, concentration and disinfection, and waste heat recovery.

Details of non detachable spiral plate heat exchanger:

The nondetachable spiral plate heat exchanger has the following advantages in terms of performance:

1. High thermal efficiency: It can keep two types of heat exchange fluids at low flow rates, stimulate turbulence, and improve heat transfer efficiency. The temperature difference of the medium can be as small as 1 ℃, resulting in small heat loss; Under the same pressure loss, the heat transfer efficiency is 3 to 5 times that of a tubular (shell and tube ) heat exchanger; The heat recovery efficiency can reach over 99%.

2. It has a compact structure, small volume, and a small floor area, which is about 30% of that of a tubular (Shell and tube) heat exchanger.

3. Low manufacturing cost

4. Flexible operation

5. Easy to install, clean, and maintain, with self cleaning ability. Due to its spiral flow of medium, dirt is not easy to deposit; Easy to clean, can be washed with steam or alkaline solution, simple and easy to operate, suitable for installing cleaning devices.

6. Low resistance: The connecting pipe on the shell adopts a tangential structure. The medium flows through a single channel, allowing for a higher flow rate than other heat exchangers. Low pressure loss, can be used to handle large capacity steam or gas;

7. Multiple units can be combined for use: When a single device cannot meet the usage requirements, multiple devices can be combined, but the combination must comply with the following regulations: parallel combination, series combination, and the spacing between devices and channels is the same. Hybrid combination: One channel in parallel and one channel in series.

8. When using nondetachable spiral plate heat exchangers for vapor-vapor heat exchange, cooling circulating water must be equipped. When the medium pressure and temperature exceed the application range, other heat exchanger structures such as shell and tube heat exchangers should be selected.

9. Precautions for the operation of non detachable spiral plate heat exchangers

(1) When the steam stripping is stopped, the temperature on both sides of the inlet and outlet slurry of the heat exchanger should be below 40 ℃.

(2) The spiral plate heat exchanger should be used in accordance with the specified requirements to avoid damage.The non detachable spiral plate heat exchanger is an efficient, energy-saving, and low investment heat exchange equipment with excellent performance.

Nondetachable Spiral plate heat exchanger