Introduction of the advantages of plate evaporator and tube evaporator
First, the advantages of plate evaporator and shell-and-tube evaporator comparison
The use of GOJE plate evaporators and condensers is an unimaginable benefit of plate evaporators and condensers compared to conventional shell and tube evaporators and condensers. Not only do they have a smaller footprint, they save valuable space while significantly reducing investment costs and maintenance, without sacrificing reliability and safety. In terms of energy saving, the plate evaporator and the condenser can perform countercurrent heat transfer evaporation to greatly close the temperature difference between the two ends, and the shell-and-tube type can only cross heat transfer, thereby reducing the amount of heating steam.
1. High heat transfer efficiency
The special corrugated plate type produces high-intensity turbulence, which is greatly improved compared to conventional shell-and-tube evaporators. The GOJE plate evaporator is particularly effective at high concentrations and high viscosities and can operate at temperatures of only 3-5 ° C. This is a big advantage when the GOJE plate evaporator is used in TVR and MVR systems. For the TVR system, the steam-heat pump is used with the shell-and-tube evaporator, and the secondary steam injection ratio is small, only 1:0.5. Because the first-cavity evaporation of the shell-and-tube evaporator is maintained at 15 °C, which means that the temperature of the steam entering the shell-and-tube evaporator needs to be high, only by pumping a small amount of low-temperature secondary steam. With the plate evaporator, the steam injection ratio can be maintained above 1:1.25, which greatly saves the steam consumption.
2, less fouling, easy maintenance
High-intensity turbulence throughout the plate not only reduces fouling, but also makes chemical cleaning more efficient. Compared to the shell-and-tube type, since the amount of retention is small, only a small amount of cleaning agent is required. The flexible design of the GOJE plate evaporator means that the heat transfer surface is easy to inspect and easy to clean mechanically by simply removing the fastening bolts and loosening the compression plates.
3, easy to expand
A popular feature of the GOJE plate evaporator is that to increase or decrease capacity, simply add or remove the plate set from the existing frame. This is a major advantage compared to shell and tube evaporators, where their production capacity is fixed at the time of installation.
4, improve product quality
Very low holdup means that almost no product remains in the plate evaporator evaporator at any given time. The short residence time of the product in evaporation is a great advantage for heat sensitive products. It also allows for quick startup and shutdown with only a little waste.
5, save user input costs
The unique design of the GOJE plate evaporator and condenser has a higher thermal efficiency than conventional shell and tube equipment, which means that the required heat exchange area is greatly reduced. Therefore, the use of GOJE plate evaporators and condensers is very economical, especially when special metals such as SMO, titanium, nickel and nickel-based alloys, Hastelloys, etc. are required.
6, save space, save installation costs
From the schematic diagram below, it is a three-effect evaporation system device. It can be clearly seen that the GOJE plate evaporator and condenser can save installation cost and installation space compared with the traditional tube-and-tube type.
Second , the plate evaporator series introduction
1. Ascending film evaporator
Riser-type plate evaporator: each group consists of two plates of different forms, the material enters from the middle of the lower end of the plate, and the steam-water mixture exits from the large-shaped port at the upper end of the plate; the steam enters from the small-shaped opening at the upper end of the plate, and the condensate Go out from the lower left and right openings. Low resistance ripple for even distribution of medium, low resistance and high efficiency
2. Lifting diaphragm evaporator
Lifting membrane plate evaporator: The lifting film evaporator has a set of 4 plates, 4 channels between the plates, the material enters from the left and right openings at the lower end of the first channel (lifting film), and passes through the second from the upper end of the plate. The channels enter the third channel and exit from the lower end of the mouth (falling film); the first and third channels are steam channels, and the steam enters from the side of the plate, and the condensed water goes out from the lower side of the plate after heat exchange.
3. Falling film evaporator
Falling film type plate evaporator: each group consists of two plates of different forms, the material enters from the left and right openings at the upper end of the plate, and the steam and water mixture goes out from the middle of the lower end; the steam enters from the large mouth in the middle of the upper end of the plate, and the condensed water Go out from the bottom left and open. The low-resistance corrugation is used to evenly distribute the medium, and the resistance is small and the efficiency is high.
This falling film increases the efficiency of the evaporation equipment to accommodate the concentration of large throughput, higher concentration, and higher viscosity materials.
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