High efficiency heat exchanger-spiral plate heat exchanger

Spiral plate heat exchanger is an efficient heat exchanger, which is suitable for steam-steam, steam-liquid, liquid-liquid and heat transfer to liquid. Applicable to chemical industry, petroleum, solvent, medicine, food, light industry, textile, metallurgy, steel rolling, coking and other industries. According to the structure, it can be divided into non-detachable spiral plate heat exchanger and detachable spiral plate heat exchanger.

After years of practice, spiral plate heat exchanger is a kind of high-efficiency heat exchange equipment, which is suitable for chemical industry, petroleum, solvent, medicine, food, light industry, textile, metallurgy, steel rolling, coking and other industries. And other industries. The spiral plate heat exchanger absorbs the contemporary international advanced technology, and is a unique liquid-liquid and steam-water heat exchanger designed and manufactured optimally. The structure and process of the product are in line with the standard of "Alfa Lade" company in Sweden. The end face of spiral plate is welded by folded argon arc welding, and the special process of "top-to-column" is a capacitor energy storage contactor, which improves the internal and external quality and is recognized by Baosteel. Can replace imports.

Non-detachable spiral plate heat exchanger is designed according to the mechanical department standard JB/TQ724-89, and the basic parameters and dimensions are specified. Has the advantages of simple manufacture, low cost, small volume and the like. It has the advantages of good heat transfer performance, but it also has its shortcomings. For example, it can't be cleaned mechanically, and it's hard to overhaul if it's broken. Users should choose specific equipment according to the actual situation of the project to make it play a greater role.

Structure and performance of spiral plate heat exchanger

1. This equipment is applicable to: liquid-liquid, gas-gas, gas-liquid convection heat exchange. It can be used for steam condensation and liquid evaporation heat exchange, and can be selected by chemical industry, petroleum, medicine, machinery, electric power, light industry, textile and other industrial departments.

2. The equipment is rolled from two steel plates to form two uniform spiral channels. Two heat transfer shut-off valves can be used for complete countercurrent flow. It is suitable for heat transfer with small temperature difference, easy to recover low-temperature heat source, and can accurately control the outlet temperature. .

3. The nozzle on the shell is of tangential structure, with small local resistance, uniform curvature of spiral channel, no big reversal of fluid flow in the equipment and small total resistance. Therefore, the design can increase the flow rate to improve the efficiency. High heat transfer capacity.

4. The end face of spiral channel is welded and sealed, with good sealing performance and reliable structure.

5. It is not easy to repair, especially when there is a problem with the inner panel, it is extremely difficult to repair. Some factories tear down all the welding seams at both ends of the equipment, flatten the repaired boards, and then roll them up. This will consume too many man-hours. Anticorrosion of spiral plate heat exchanger is very important.

6. Mechanical cleaning is not possible. The production practice proves that compared with the general tubular heat exchanger, the spiral plate heat exchanger is not easy to block, especially the suspended particles such as sediment and shells are not easy to deposit in the spiral channel. Analyze the reasons; First, the impurities in the single channel are deposited in the channel, and once the circulating flow is formed, it will be rushed out; second, there is no dead angle in the spiral channel, and the impurities are easily washed out.

7. Due to the spacing of the spiral channel supported by the spacing column, no fiber impurities (cotton yarn, straw, leaves, etc.) can enter the heat exchanger.

8. Strictly control the outlet temperature of cooling water below the scaling temperature.

9. The common cleaning method is steam purging or alkali washing. Steam is blown into the pipeline and impurities are blown out of the equipment. Many users think this is an effective method.