Principle
A plate and frame heat exchanger as known as gasketed plate heat exchanger is a high efficiency heat exchanger that assembled from metal sheets with corrugated pattern and different kind of gaskets. Plate heat exchangers are the ideal equipment for heat exchange between liquid-liquid and liquid-vapor.In the case of the same pressure loss, the heat transfer coefficient is 3-5 times higher than that of the tube heat exchanger, but the floor space is one-third of the tube heat exchanger, and the heat recovery rate can be as high as 90% or more.
Maximum volume: 5000m3 /h;Maximum design pressure: 25bar
Maximum temperature: 200 celsius degree; Minimum difference in temperature: 0.5-1 celsius degree
Plate heat exchanger
High heat transfer coefficient
The design of the plate corrugation is aimed at the high thermal conductivity. The special flow path are formed by the plate corrugation causing strong disturbance flow at a very low flow rate, which is called turbulent flow. And the disturbance flow can be self-cleaning to prevent fouling and thus the heat transfer efficiency is high.
Plate heat exchanger
Large logarithmic temperature difference
The temperature difference at the end is small, and the plate heat exchanger is mostly a cocurrent or countercurrent type of flow. In addition,there's no bypass flow.
Plate heat exchanger
Small footprint and easy maintenance
The plate heat exchanger has a compact structure, and the heat exchange area per unit volume is 2-5 times that of the shell-and-tube type, and the floor area of the plate heat exchanger is about 1/2-1/3 of the shell - tube heat exchanger when achieving same heat exchange capacity .
Product principle
The plate and shell heat exchanger adopts a circular corrugated heat exchanger plate that welded into a heat exchanger lathed bundle and combined with the structure of the pressure vessel shell. It also has a high heat transfer efficiency,compact structure and resistant to high temperature & pressure like shell tube heat exchanger. The plate and shell heat is durable under high temperature & pressure,large temperature difference and thermal shock, which is in a leading position in the industry.
Maximum volume:2500m3/h; Maximum design pressure:100bar
Maximum temperature:450 celsius degree; Minimum difference in temperature:0.5-1celsius degree
Features
Plate Shell Heat Exchanger
Safe and reliable
Unique and durable lathed bundle structure: It can resist pressure shock and thermal shock very well; round plate and circular ring welding, stress distributes evenly; no welding between lathed bundle and shell, and it can withstand various thermal expansion (deformation ).The tubular shell structure is a strong, durable and safe pressure vessel; it can be installed in any position without being affected from outside; the solid protective shell will not leak or burst, and there is no danger of leakage to the environment.
We have hundreds of types of plate and gasket for your choice, with the most complete range, perfect quality and irresistible prices.
Used for maintenance and production
Plate material: SS304, 316L, Titanium, Nickel, 254Mo, Hastelloy
Plate thickness: 0.5mm, 0.6mm
Gasket material: NBR, EPDM, FPM, Silicone rubber
Food-grade material and other materials suitable for special working condition, like elevated or low temperature conditions, are also available.
Material Applicable Media
SS 304 pure water, river water, edible oil, mineral oil
SS 316L pure water, river water, edible oil, mineral oil
Titanium sea water, salt water, brine
Nickel high temperature or high concentration caustic soda
Mo dilute sulphuric acid, inorganic aqueous solution
Hastelloy concentrated sulphuric acid, hydrochloric acid, phosphoric acid
Material Temp. Applicable Media
NBR -15~+110 pure water, sea water, salt water, mineral oil
HNBR -15~+140 high temperature water or mineral oil
EPDM -25~+170 hot water, water vapour, acid, alkali
F.viton G -5~+180 acid, alkali fluid
Silicone Rubber -65~+250 low temperature and dry heat resistant
Asbestos -5~+250 food, oil, fat, alcohol
Pshe consists of a circular plate group and shell. The plate group, enclosed in the pressure vessel, is the core of the heat exchanger. As heat transfer components, plates determine the heat transfer performance of the heat exchanger. Shell is the essential for the temperature, pressure capacity and safe and reliable operation.
Based on specific operating parameters, media flow paths can be set properly, which ensures the reasonable match of heat transfer efficiency and the resistance loss, and at the same time minimizes equipment investment and operating costs.
Plate & frame type heat exchanger is a fully welded plate and frame heat exchanger, which consists of a fully welded plate group and removable covers. Four covers can be opened from four directions for the inspection, maintenance and cleaning of the plate group. By adjusting the flow structure and the installation position of the partition, it is suitable for different working conditions.
Plate corrugation will match with medium properties.
With compact structure, this kind of heat exchanger has high heat transfer efficiency.
The semi welded plate heat exchanger is composed of a pair of plates, and each of the two plates is laser welded to form a pair of plates. It is sandwiched between the fixed pressing plate and the movable pressing plate in a superimposed manner
Product introduction
Semi welded plate heat exchanger
The semi welded plate heat exchanger is composed of a pair of plates, and each of the two plates is laser welded to form a pair of plates. It is sandwiched between the fixed pressing plate and the movable pressing plate in a superimposed manner. The mesh contacts are formed between adjacentplates and supported by each other, and the rigidity of the plates is remarkably enhanced. Our semi welded plate heat exchanger adopts advanced laser welding technology, which has the advantages of small welding deformation, small residual stress and high quality.Qingdao Ruipute has advanced welding technology, especially for the first time to achieve the welding technology of special materials such as titanium, we are at the domestic leading level in developing and manufacturing semi-welded titanium plate heat exchange equipment.
The cavity of the pair of plates forms a pass of a medium; the two pairs of plates are sealed by a sealing gasket which is resistant to corrosion, high temperature and high pressure, and constitutes another medium pass; the two mediums flow evenly in a countercurrent way in the adjacent channels to complete the sufficient heat exchange process. This structure ensures the stability of the welded plate pairs, providing easy maintenance of each pair of plates. It has the characteristics of high safety, high heat transfer efficiency, long service life and easy maintenance. It is suitable for cooling and chemical treatment. It is the ideal alternative equipment to shell and tube heat exchanger and all welded plate heat exchanger.Especially suitable for evaporation and condensation of ammonia coolants,as well as chemical treatment of corrosive liquids.
Maximum volume:5000m3 /h; Maximum design pressure:25bar
Maximum temperature:150 celsius degree; Minimum difference in temperature:0.5-1celsius degree
Our static casting foundry and foundry expert have more than 30 years of production experience, we is focusing on the castings for heat treatment furnace components, our heat resistant casting for heat treatment fixtures are casted by investment casting , namely lost wax casting, and sand casting methods. Main products includes casting stackable baskets for heat treatment furnaces, trays and grids for furnace, roller hearth trays , serpentines trays , furnace fixtures, jigs, for chamber furnace, pit furnaces. Our company work with german companies for long term cooperation, most of our castings are exported to germany, france, italy, spain, usa, south america, turkey, sa and get very good reputation from our valued customer, more products like fan wheel, skid riders, link belt casting, loading bars, cross beams, walking beams. (cast furnace fans, grids, and baskets, high alloy heat resistant casting base tray and basket)
Our static casting foundry and foundry expert have more than 30 years of production experience, we is focusing on the castings for heat treatment furnace components, our heat resistant casting for heat treatment fixtures are casted by investment casting , namely lost wax casting, and sand casting methods. Main products includes casting stackable baskets for heat treatment furnaces, trays and grids for furnace, roller hearth trays , serpentines trays , furnace fixtures, jigs, for chamber furnace, pit furnaces. Our company work with german companies for long term cooperation, most of our castings are exported to germany, france, italy, spain, usa, south america, turkey, sa and get very good reputation from our valued customer, more products like fan wheel, skid riders, link belt casting, loading bars, cross beams, walking beams. (cast furnace fans, grids, and baskets, high alloy heat resistant casting base tray and basket)
Name: Flexible Graphite Sheet
Description: Flexible graphite sheet is made with pure expanded graphite. Sungraf brand flexible graphite sheet has a high purity of 99% carbon content
Advantages: better chemical resistance, better thermal conductivity, and better sealability.
Usage:â? As gasket material, it is usually fabricated into Graphite Laminate, reinforced graphite sheet
â?¡widely used in fluid sealing applications: flange gasket, spiral wound gasket, heat exchanger gasket, etc.
â?¢It can also be used as solid lubricant in metal stamping and forming applications, or as heat liner in industry furnaces and other heating devices
Standard Size
TypeThick (mm)Width (mm)Length(mm)
In Sheets0.2-6.01000, 15001000, 1500
In Rolls0.2-1.51000, 150030m-100m
The double wall plate heat exchanger plate is welded integrally with two thin plate pieces along the corner hole of each pair of plates. When the plate leaks, for example, the perforation caused by long time working will be easily detected from outside. Thereby it stops mixing between two materials.And at the same time, they plays very important roles towards warning internal leakage. Combined with the double seal of the gasket, the possibility of mixing two materials is avoided, and it is suitable for applications with high sanitary requirements or high safety and reliability of industrial production. Since the two sheets are welded to form a sheet, the heat transfer coefficient is inevitably lowered, but the highest safety is achieved in preventing materials mixing.
Large mean logarithmic temperature difference
02 Large log-averaged temperature difference
Plate heat exchanger is mostly parallel or counter-current flow mode. Select the number of processes and channels, the initial selection of cold, hot fluid flow and the number of channels, and thus calculated flow rates. Cold, hot fluid in the plate heat exchanger flow parallel to the heat transfer surface, no bypass, thus making the end temperature difference is small, the logarithmic mean temperature difference is large .
Materials
Two first legs and two first elbows:
ZGCr25Ni35Nb, ZGCr28Ni48W5, HK40, HT, HU, HH, 22H, More1, More2, KHR35H
Two last legs and last elbow: HPNb, ZG40Cr25Ni20Si2
support: GX40Cr25Ni20
flanges: SGC25
Process
Legs is centrifugal casted and machined subsequently.
Elbows will be made by static casting or precision casting.
Support be made by precision casting.
Flange will be forged, welded and machined according to relevant drawings.
Property
characteristic of heat resistance and excellent creep srtength
Welding consumables
Similar to or higher than base material
or as per the buyer's requirements
Inspection
The most generally used methods of testing given below:
Chemical analysis by Spectrometer
Mechanical tests in Normal and High temperature.
Ultrasonic, X-ray, Dye Penetrant Test.
Boroscope; Eddy current testing; Microscope ; Pressure tests.
Application
1. heat resistant alloy radiant tubes are mainly used in petrochemical, Metallurgical, steel and heat resistant industries.
2. corrosion resistant alloy radiant tubes are used in pulp and paper, chemical and other petrochemical industries.
3. super-alloys radiant tubes are used in high strength, carburization resistance industry.
Working temperature
depending on the materials (max 1)
sea worthy packaging or as per customers' requirements
We are a China based plate heat exchanger manufacturer, and we specialize in plate type heat exchanger, all kinds of plates and gaskets producing. 500+ moulds are with us, and we can replace the most applied plates and gaskets for Alfa Laval Gea, APV, Tranter, Sondex, Funke, Thermowave etc. Thereâ??s no difference when comparing our products with genuine ones. And through the past 13 years, we have been selling them to all over the world, especially in European and American markets.
The GEA brand, plates and gaskets we can produce and replace is: NT50T NT50M NT50X NT100TNT100M NT100X NT150L NT150S NT250S NT250M NT250L NT350S NT350M
Our plate material 304, 316L, Titanium, Hastelloy C-276 254SMO 904L;
Our gasket and ring gasket material NBR, EPDM, VITON, HNBR, CR;
Weâ??re a China based plate heat exchanger manufacturer, and we specialize in plate type heat exchanger, all kinds of plates and gaskets producing. 500+ moulds are with us, and we can replace the most applied plates and gaskets for Alfa Laval Gea, APV, Tranter, Sondex, Funke, Thermowave etc. Thereâ??s no difference when comparing our products with genuine ones. And through the past 13 years, we have been selling them to all over the world, especially in European and American markets.
The GEA brand, plates and gaskets we can produce and replace is:
