Gasketed Plate Evaporator

• Customized: Customized
• Certification: CE, ISO, RoHS
• Sectional Shape: Square
• Material: Stainless Steel
• Transport Package: Wooden Case
• Specification: Stainless Steel
• Model NO.: SS316
• Trademark: DGXT OR OEM
• Origin: China
• HS Code: 84195000
• Production Capacity: 100000pieces/Year

Product Description

                                                                      Gasketed plate evaporator

 

Liquid/Liquid GPHE

This animation above shows the working principle of an Alfa Laval liquid/liquid 1-pass gasketed plate-and-frame heat exchanger where the fluids run counter-currently through the heat exchanger. The hot liquid (illustrated in red) normally enters through one of the upper connections and leaves through the connection underneath. The cold liquid (illustrated in blue) enters through one of the lower connections and leaves through the connection above

The fluids enter through the connections and portholes of the heat transfer plates. Specially designed sealing gaskets located between the plates direct the fluids so that the hot and cold fluids pass counter-currently in alternating channels. When the fluid enters between the plates, it passes over the distribution area. Alfa Laval offers two types of distribution areas: our patented CurveFlowTM and the chocolate pattern. The distribution area is one of the most important features of a plate heat exchanger. Its main purpose is to ensure an even flow of fluid over the entire plate while maximizing heat transfer efficiency and minimizing maldistribution and fouling. In the animation you can see that the distribution area helps the fluids to quickly fill up the entire cross section of the plates

For very heat sensitive media, co-current flow is used in gasketed plate-and-frame heat exchangers. The benefit with this design is that the coldest fluid meets the hottest fluid when entering the heat exchanger, minimizing the risk of overheating or freezing sensitive media. In the animation you can imagine that the hot fluid is reversed, so that both fluids are entering at the bottom connections. 

The animation shows the working principle of a conventional gasketed plate-and-frame heat exchanger, but the same working principle is applicable also to specialized ranges such as our Semi-welded and WideGap plate heat exchangers.

Alfa Laval has an extremely broad range of gasketed plate-and-frame heat exchangers which are used in all types of industries. The number of sizes, plate and gasket materials and available options are enormous
 

Steam heater GPHE

The animation above shows the working principle of an Alfa Laval gasketed plate-and-frame heat exchanger when used as a steam heater. The steam or vapour (illustrated in grey) enters through one of the upper connections and the condensate leaves through the connection underneath. The cold liquid (illustrated in blue transferring into red) enters through one of the lower connections and leaves through the connection above.

As the fluids pass through the heat exchanger heat is transferred from the condensing steam/vapour to the cold media. The fluids enter through the connections and port holes of the heat transfer plates. Specially designed sealing gaskets located between the plates direct the fluids so that the hot and cold fluids pass counter-currently in alternating channels. When the fluid enters between the plates, it passes over the distribution area. Alfa Laval offers two types of distribution areas: our patented CurveFlow^TM and the chocolate pattern. The distribution area is one of the most important features of a plate heat exchanger. Its main purpose is to ensure an even flow of fluid over the entire plate while maximizing heat transfer efficiency and minimizing maldistribution and fouling. In the animation you can see that the distribution area helps the fluids to quickly fill up the entire cross section of the plates.

The animation shows the working principle of a conventional gasketed plate-and-frame heat exchanger, but the same working principle is applicable also to specialized ranges such as our Semi-welded and WideGap plate heat exchangers.
 

2-Pass GPHE

The animation above shows the working principle of an Alfa Laval liquid/liquid 2-pass gasketed plate-and- frame heat exchanger where the fluids run counter-currently through the heat exchanger. The turning plate in the middle of the plate pack directs the flow into the two passes. The hot liquid (illustrated in red) enters through one of the connections in the frame plate. The fluid runs through the heat exchanger in two passes and then leaves through one of the connections in the pressure plate. The cold liquid (illustrated in blue) simultaneously enters through one of the connections in the pressure plate and leaves through one the connections in the frame plate.

As the fluids pass through the heat exchanger, heat is transferred from the hot media to the cold media. Countercurrent flow enables maximum heat recovery possibilities and very close temperature approach can be achieved. Temperature cross is also possible, meaning that the hot outlet can reach a lower temperature than the cold outlet. This can only be achieved to a limited extent with tubular heat exchangers making plate-and-frame heat exchangers more thermally efficient. You can learn more about the benefits of GPHEs vs shell-and-tube heat exchangers by clicking here.

The fluids enter through the connections and portholes of the heat transfer plates. Specially designed sealing gaskets located between the plates direct the fluids so that the hot and cold fluids pass counter-currently in alternating channels. When the fluid enters between the plates, it passes over the distribution area. Alfa Laval offers two types of distribution areas: our patented CurveFlow and the chocolate pattern. The distribution area is one of the most important features of a plate heat exchanger. Its main purpose is to ensure an even flow of fluid over the entire plate while maximizing heat transfer efficiency and minimizing maldistribution and fouling. In the animation you can see that the distribution area helps the fluids to quickly fill up the entire cross section of the plates.

The animation shows the flow principle of a conventional gasketed plate-and-frame heat exchanger with a 2-pass configuration, but additional passes are possible. It is also possible to have a different number of passes on each side of the heat exchanger. For bigger models with higher flow rates, reinforcing partition plates are sometimes used which are not shown in the animation. Specialized ranges of the gasketed plate-and-frame heat exchanger are also possible such as our Semi-welded and WideGap.

For very heat sensitive media, co-current flow is used in gasketed plate-and-frame heat exchangers. The benefit with this design is that the coldest fluid meets the hottest fluid when entering the heat exchanger, minimizing the risk of overheating or freezing sensitive media. In the animation, you can imagine reversing the cold fluid so that both fluids are entering at the frame plate connections. 

Alfa Laval has an extremely broad range of gasketed plate-and-frame heat exchangers which are used in all types of industries. The number of sizes, plate and gasket materials and available options are enormous.
 

Types of gasketed plate heat exchangers

Industrial GPHEs

Industrial gasketed plate heat exchanger's versatility allows it to be designed and configured for applications ranging from relatively simple duties with low requirements to very demanding duties with the highest requirements on both performance and documentation. The models are used for heating, cooling, heat recovery, condensation, and evaporation. 

 

Typical applications:

• HVAC
• Refrigeration
• Engine cooling
• Dairy and food
• Chemical processing
• Oil production
• Power generation

Use Semi-welded gasketed plate heat exchangers as evaporators and condensers for refrigerations systems, when gaskets are not suitable for one of the process media. Semi-welded heat exchangers alternate welded channels and traditional gasketed channels and can also take a higher design pressure compared to fully gasketed plate heat exchangers. 


 

Typical applications:

• Dairy, brewery and vineyard production
• Marine
• Fishing vessels and fish processing
• Slaughterhouses
• Chemical and pharmaceutical industries
• Ice manufacturing, ice-skating rinks
• Cold and frozen storage
• Food retail outlets

WideGap GPHEs
 

WideGap gasketed plate heat exchangers are designed for fibrous fluids and for fluids containing coarse particles. The wide gaps between plates allow fibers and particles to easily pass through the heat exchanger with minimum clogging.

Typical applications:

• Sugar
• Bioethanol
• Pulp and paper
• Petrochemicals
• Condensers for heat recovery

AlfaVap semi-welded GPHEs

 

AlfaVap semi-welded heat exchangers are rising film plate evaporators and are suitable when concentration and viscosity of media are high.

AlfaVap's advantage is they work also when the temperature differential between the hot and cold fluids approaches as low as 4.5°F meaning that lower grade steam and more effects in series can be use in an evaporation system compared to the shell-and-tube systems.

Typical applications:

• Sugar refinery evaporation systems
• Sweeteners evaporation systems
• Bioethanol and caustic evaporation
• Thermosiphon reboiler

AlfaCond GPHEs
 

AlfaCond plate condensers are specifically designed for condensing of vapor under vacuum. They're an alternative to direct condensers when condensate recovery is the goal and when there are space constraints. Non-condensables are removed from the condensate outlet pipe and led to the vacuum system.  

Typical applications:

• Evaporation systems
• Ethanol condensers in bioethanol plants
• Pan vapor condensers in sugar refineries
• Turbine condensers in small power plants

Diabon GPHEs
 

Diabon plate-and-frame heat exchangers are used for highly corrosive media, combining high-efficiency heat transfer benefits with the exceptional corrosion resistance of graphite material.

Diabon is a dense, synthetic resin-impregnated high quality graphite with a fine and evenly distributed pore structure, and can be used with corrosive media up to 390°F.

Ideal for handling highly corrosive fluids such as:

• Hydrochloric acid and gas in all concentrations
• Sulphuric acid up to 90%
• Hydrofluoric acid up to 60%
• All concentrations of phosphoric acid
• Pickling acids in surface treatment plants
• Electrolytes used in the mining industry
• Mixed acids
• chlorinated hydrocarbons
• catalysts such as aluminium chloride