Shandong Zhilin Environmental Protection Technology Co., Ltd.

Shandong Plate Heat Exchanger: Structure of Spiral Plate Heat Exchanger

Release time:

2023-02-02 14:03

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Shandong Plate Heat Exchanger: Structure of Spiral Plate Heat Exchanger Spiral plate heat exchangers are made from two rolled plates. Therefore, two very uniform spiral channels are formed inside the equipment. Because the heat transfer medium can achieve full countercurrent flow within the equipment, the spiral plate heat exchanger is ensured in terms of heat transfer effect, and the heat transfer effect is improved compared with the industry. Even substances with very small temperature differences can achieve ideal heat transfer effects in a spiral plate heat exchanger. This is also an important reason why many manufacturers choose spiral plate heat exchangers.

　　1: Actual Heat Transfer Effect of Spiral Channel

　　Spiral plate heat exchangers are made using two rolled plates, thus forming two very uniform spiral channels inside the equipment. Because the heat transfer medium can achieve full counter-current flow within the equipment, the spiral plate heat exchanger is ensured in terms of heat transfer effect, and the heat transfer effect is improved compared to the industry. Even substances with very small temperature differences can achieve ideal heat transfer effects in a spiral plate heat exchanger. This is also a major reason why many manufacturers choose spiral plate heat exchangers.

　　2: Reasons for Strong Thermal Conductivity

　　If we analyze the structure of the spiral plate heat exchanger in detail, let's take a look at the spiral plate heat exchanger from the radial structure of the shell. From the structure, it is not difficult to find that the refractive indices of the spiral channels are very similar and uniform, which means that the substances in the system do not need to withstand greater turning forces when flowing externally. Under the condition of low overall frictional resistance, the flow rate can be increased, which ensures its strong heat transfer capacity. The above is an interpretation of the structure and high-efficiency reasons of the spiral plate heat exchanger. Perhaps after understanding this information, you will have a more detailed understanding of the working principle and heat transfer effect of the spiral plate heat exchanger.

Shandong Zhilin Environmental Protection Technology Co., Ltd.

　　Shandong Plate Heat Exchanger: Cleaning Methods for Spiral Plate Heat Exchangers

　　1. Degreasing

　　For chemical water treatment of oil stains, the key lies in degreasing. Oil and grease are immiscible with water in acidic solutions, but they are miscible in alkaline solutions. Therefore, the selection of alkaline cleaning agent materials is important. Selection of Alkaline Cleaning Agent: Using Bm-608 alkaline cleaning agent, which has a dispersing effect on vegetable oils and fats. Alkaline cleaning process: Using a circulating, soaking, and recirculating soaking cleaning method, the inlet and outlet of the cleaning agent can be replaced multiple times. Temperature control of alkaline cleaning agent: During the alkaline cleaning process, the operating temperature is usually controlled. As the temperature rises, the emulsion dispersion and penetration rate increases, and the cleaning time is reduced. The temperature should be controlled at 80-90℃ during the entire cleaning process.

　　2. Complexation Acid Pickling and Passivation

　　After alkaline cleaning, because the equipment is rolled in, there are many blind areas. In addition, there are metal oxide scales, organic compound deposits, and sulfide scales formed by calcium and aluminum ions on the sheet metal bends. Therefore, complexation descaling cleaning is required. Shared from Qingyun Heat Exchanger. Using aminosulfonic acid as the main agent, sodium citrate, EDTA as the main agent, and adding 0.25% Lan-826 and 0.3% surfactant, the temperature is controlled at 50-55℃, not exceeding 60℃, circulating and soaking for 5h, and checking the acid concentration to see if it reaches the cleaning endpoint, then water washing is carried out.

　　3. Stainless Steel Passivation

　　After water washing, regular stainless steel passivation should be performed. Using 1.5% trisodium phosphate and 0.1% NaOH, the passivation agent temperature is controlled at 80-90℃ for 16h. After the passivation agent is drained and the water is rinsed clean, it can be put into operation.

　　Shandong Plate Heat Exchanger: Thank you for watching. Our company has various heat exchangers. If you have any needs, please feel free to call us.

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