The difference between double tank and jacket tank

In the chemical industry, double-layer tanks and jacketed tanks are two common equipment, and they have obvious differences in structural design and functional use. This article will analyze the difference between double-layer tanks and jacketed tanks in detail from multiple angles to help readers better understand the characteristics of these two devices and their application scenarios.

1. Double tank definition and structure characteristics

Double-layer tank is a common liquid storage equipment, its structure is composed of two layers of metal tanks, leaving a gap in the middle. In general, the two-layer tank is fixed between the two-layer tank by flange or similar connection, and the inner tank and the outer tank are connected by flange. The inner and outer layers of the double-layer tank are usually made of the same material, such as stainless steel or carbon steel. This design makes the double-layer tank have good corrosion resistance and compression resistance.

The structural characteristics of the double tank make it capable of a variety of storage tasks, especially when it needs to withstand high temperatures and pressures. For example, in some chemical production processes, double-layer tanks can be used to store high-temperature liquids while having a good anti-leakage function.

2. Jacketed tank definition and structural characteristics

Jacketed tank is also a common liquid storage equipment, but its structural design is different from that of double-layer tank. Jacketed tanks usually consist of a metal body tank and a removable outer jacket. Jackets are usually made of plastic or composite materials, which can be removed or recycled. This design allows the jacketed tank to adjust the temperature and pressure of the internal medium according to actual needs.

The advantage of jacketed tanks is that they are highly flexible and can be adjusted to different process requirements. The removeability of the jacket makes it more convenient when maintaining and replacing internal components.

3. Double tank and jacket tank main difference

Although both double and jacketed tanks have a reservoir function, they differ significantly in several ways:

(1) Structural design

The structure design of the double-layer tank is relatively fixed, there is a fixed connection between the inner and outer layers, and the sealing between the two layers of the tank is better, which is suitable for occasions that require strict sealing. The structure design of the jacketed tank is more flexible, and the jacket can be disassembled, so in some applications, the jacketed tank is more in line with the process requirements.

(2) Temperature control capability

Double-layer tanks are usually used in occasions that require high-temperature storage, and are designed to withstand higher temperatures and are suitable for storage of high-temperature media. Jacketed tanks, on the other hand, pay more attention to the control of the temperature of the internal medium and are usually used in scenarios where temperature needs to be adjusted.

(3) Anti-leakage ability

The double-layer structure design of the double-layer tank makes it more resistant to leakage and suitable for storing perishable materials. The outer material of the jacket tank is usually plastic or composite material, and its anti-leakage ability is relatively poor, but in some special occasions, the design of the jacket can make up for this defect.

(4) Maintenance and recovery

The structural design of the double-layer tank is relatively fixed, and the maintenance is relatively troublesome, especially if the internal equipment needs to be replaced, the entire double-layer tank needs to be disassembled. The outer design of the jacket tank is recyclable, the outer material can be recycled and reused, and the maintenance is more convenient.

The difference between double-layer tank and jacket tank is mainly reflected in the structural design, temperature control ability, anti-leakage ability and maintenance and recovery. The choice of equipment needs to be determined according to the specific process requirements. If you need to store high temperature and high leakage requirements, double tank is a better choice; if you need to accurately control the temperature of the internal medium, the jacket tank is more suitable. The recyclability and maintenance flexibility of jacketed tanks make them advantageous in certain applications.