Heat or cool a fluid medium by transferring heat from one liquid to another. The gasketed plate heat exchanger is composed of a series of corrugated plates, which are assembled between the frame and the pressure plate. and the gasket acts as the seal between the plates. The fluid on both sides of the plate usually flows counter current through the heat exchanger, which can achieve the same working condition of the shell-tube heat exchanger. This provides the most efficient heat transfer performance to achieve very close temperature difference,In other word, the temperature difference between the outlet and inlet medium is come to small. In the removable plate heat exchanger with gaskets, the plates are equipped with elastic gaskets, which seal the channel and guide the medium to the spare channel. The plates are assembled between the frame plates and the pressure plates and compressed by tightening the bolts installed between these plates. The channel plate and pressure plate are suspended from the upper bearing rod and fixed in place by the lower guide rod, which is fixed on the pillar.This design is easy to maintain and adjust the heat exchange by reducing or adding plates. The reasonable matching of the plate ripple angle can greatly improve the heat exchange effect per unit heat exchange area, adjust the liquid resistance, save the heat exchange area, reduce the investment cost and shorten the investment recovery time. The flow, physical properties, pressure drop and temperature difference of the liquid determine the number and size of the plates. The chemical properties and corrosion characteristics of the liquid determine the materials of the plates and gaskets.Different corrugated plate structure designs not only improve the turbulence, but also form many supporting points, which can withstand the pressure difference between the media.
Plate materials with their application
|Purified water, fresh water, edible salt fluid,mineral oil
|Seawater, saline water and Salinized fluid
|Dilute sulfuric acid, saline aqueous liquid, inorganic aqueous liquid
|High temperature and high concentration caustic soda
|Concentrated sulfuric acid, hydrochloric acid, phosphoric acid
Gasket materials with their application
|Fresh water,seawater,mineral salt,salinized water
|Hot water, steam, acid, alkali
|High temperature mineral oil, high temperature water
|Acid & alkali fluid
|Concentrated acid, alkali, high-temperature oil, steam
|Hydraulic test to find the leaks
|Pressure test according to the technical requirements,mark the leakage point if any
|loose Clamp bolts orderly according to technical instruction, disassemble the plates and keep in neatly stacking
|Separate the gaskets from the plate
|Separate the gaskets from the plate to determine whether them can be used.
|Clean the plates one by one (remove sludge or sundries).
|If there is much oil dirt, immerse in the corresponding chemicals at least two hours.
|Washing by brush with fresh water.
|2rd immerse it in the corresponding chemicals for ten minutes if there is much scale,
|2rd washing by brush with fresh water.
|PH: 6-8 indicates the end of cleaning.
|Plates dye check one by one, and the defective plates shall be removed.
|Assemble plates with gaskets which no have defect,And tighten the bolts orderly according to technical instruction.New plates and gaskets should be supplemented if any insufficient.
|Final hydraulic test
|Pressure test according to the technical requirements in order to make sure no leaks any more.
|Go into next running