Spiral plate heat exchanger is an efficient heat exchanger equipment. It is suitable for vapor-vapor, vapor-liquid, liquid-liquid, heat transfer to liquid. It is suitable for chemical, petroleum, solvent, medicine, food, light industry, textile, metallurgy, steel rolling, coking and other industries. How to distinguish spiral plate heat exchangers.
(1) For the purpose of mechanical cleaning, the spiral plate heat exchanger with one end of the detachable spiral channel open is sealed with a flat cover and gasket to prevent fluid from leaking into the atmosphere or short circuiting fluid in the same channel. The structure of the non-detachable spiral plate heat exchanger is relatively simple. The oil coolers at both ends of the spiral channel are all welded to death. The detachable spiral plate heat exchanger shell and tube heat exchanger is completely the same as the non-detachable type except the sealed structure at the two ends of the spiral channel.
(2) The working temperature of the spiral plate heat exchanger is determined by the selected materials. Most of the materials are carbon steel, stainless steel, aluminum, copper and titanium. In order to improve the pressure bearing capacity of the spiral plate, a distance pillar is used between the plates.
There are two types of fluid inlet and outlet on the cylinder: normal connection and tangential connection.
Tangential connection is commonly used in China. Its fluid resistance is small, and impurities are easily washed out by the stainless steel reaction pot. It is more convenient to use a slewing support, which can make the heat exchanger stand or lie down.The heat-exchanged A and B fluids flow through the two sides of the spiral plate, respectively. One of the fluids flows from the outside to the inside along the spiral channel to the central outlet. The other fluid enters from the center along the spiral channel and flows from the inside to the outside. The two fluids flow in a pure countercurrent manner.