Classification And Application Analysis Of Lined Storage Tanks

In the fields of chemical, food, medicine, etc., storage tanks are important equipment for storing liquids or gases. Among them, lined storage tanks have become the preferred solution for many industries due to their excellent corrosion resistance and safety. This article will introduce the classification of lined storage tanks and their application scenarios in detail to help users better choose the type of storage tank that suits their needs.

Classification by lining material

The core of lined storage tanks lies in their lining materials. Different materials determine the corrosion resistance, temperature resistance and applicable medium range of the storage tank. Common classifications include:

1. Polyethylene (PE) lined storage tanks

Polyethylene lined storage tanks are widely used in the chemical industry for their excellent acid and alkali resistance and low cost. PE materials have strong chemical stability and are suitable for storing weak acids, weak alkalis and some organic solvents. Its disadvantage is that its temperature resistance is limited and is usually suitable for environments of -20℃ to 60℃.

2. Polypropylene (PP) lined storage tanks

Polypropylene lined storage tanks have higher temperature resistance than PE and can withstand a temperature range of -20℃ to 100℃, which is suitable for storage of chemical media at higher temperatures. PP material also has excellent corrosion resistance and is often used to store corrosive liquids such as strong acids and alkalis.

3. Fluoroplastic (PTFE/FEP) lined storage tanks

Fluoroplastic lined storage tanks are one of the most corrosion-resistant types of storage tanks and are suitable for storing highly corrosive media such as hydrofluoric acid and concentrated sulfuric acid. PTFE (polytetrafluoroethylene) and FEP (fluorinated ethylene propylene) materials have extremely low surface energy and chemical inertness and hardly react with any chemicals, but they are expensive and are usually used in special industrial fields.

Classification by structural form

The structural form of the lined storage tank also affects its applicable scenarios, which are mainly divided into:

1. Fully lined storage tank

The inner wall of the fully lined storage tank is completely covered with lining material, which is suitable for storing highly corrosive media and ensuring the overall corrosion resistance of the tank.

2. Partially lined storage tank

Partially lined storage tanks use lining materials only in the part that contacts the corrosive medium, which is suitable for storing less corrosive media and can reduce costs.

Application fields

Lined storage tanks are widely used in chemical, food, pharmaceutical, environmental protection and other industries. In the chemical industry, they are used to store acids, alkalis, organic solvents, etc.; in the food industry, they are used to store dairy products, juices, etc.; in the pharmaceutical field, they are used to store high-purity liquid medicines.

Choosing a suitable lined storage tank requires comprehensive consideration of medium characteristics, temperature requirements and cost budget. Understanding different classifications can help companies optimize tank selection and improve production efficiency and safety.