Technical parameters of plate heat exchanger

The size of inlet and outlet pipe diameter of inlet and outlet pipe is determined by the velocity of the medium in the pipeline is less than 3m / S, the maximum flow rate should be less than 4m / s. Plate plate heat exchanger plate thickness is 0.5 ~ 1.0mm, taking into account the manufacturing process, the level of operation and erosion, scaling and other factors, plate heat exchanger plate thickness should be selected from 0.7 to 0.9ram.

Surface pressure loss of plate heat exchanger

Water softening temperature according to the existing import plate heat exchanger for soft water supply experience, water supply temperature between 35 ~ 40 DEG C, the blast furnace high production, safety production the most advantageous, taking into account the summer cooling capacity of chilled water and cooling tower, water softening into blast furnace temperature in the summer the most unfavorable conditions should be less than 40 degrees, water softening furnace temperature should be less than 45 degrees Celsius, the softening water into the plate heat exchanger temperature should be 45 degrees, a plate heat exchanger temperature should be 40 DEG C.

Plate heat exchanger plate plate plate heat exchanger plate material is basically two kinds of stainless steel, titanium alloy.

The number of small and medium plate heat exchanger according to the characteristics of the blast furnace, the furnace cooling water system using the number of plate heat exchanger should be 3 units in parallel, each flow of the maximum flow rate of 5O%, the normal operation of a two.

According to the cooling water supply temperature and cooling tower working ability, the cooling water should be less than 32 DEG C, and the temperature of the plate heat exchanger should be less than 37 DEG C.

According to the reasonable flow rate of water in the cooling wall, and the heat dissipation layer of the inner wall of the blast furnace is reduced and the heat transfer is increased rapidly, the softening water flow rate is determined according to the maximum heat transfer rate. Because the price of titanium materials for stainless steel 4 ~ 6 times, and the cooling plate plate heat exchanger plate material can be satisfied with the requirements of stainless steel plate plate plate material selection of stainless steel.

Heat exchanger normal working pressure according to the characteristics of soft water system of closed cycle, normal working pressure plate heat exchanger should be the minimum water softener system circulating pump outlet pressure and the height of the water level high blast furnace expansion and. The original air cooler soft side pressure loss is less than 0.05MPa, so the plate plate heat exchanger soft side pressure loss must be less than '0.05M Pa.

Gasket material to consider the actual situation and plate plate heat exchanger working temperature, the composition of the softening water and many other factors, gasket material should choose three ethylene propylene rubber.

Because of the soft water system in addition to the open air cooler, into the plate plate heat exchanger, the other departments do not change, therefore, plate plate heat exchanger soft side pressure loss should be less than the original air cooler soft water side pressure loss.

Plate thickness plate heat exchanger plate thickness and heat transfer coefficient is inversely proportional to the relationship between the thickness of the plate is smaller, the better the heat transfer effect, but also easily eroded leakage.