Fracture Analysis of Outer Steel Strip of Chemical Container

Analysis of Steel Belt Fracture of Chemical Engineering Container

Abstract

The chemical engineering container is widely used in chemical industry. Its malfunctions and integrity will seriously affect the normal operation of the unit and the safety of personnel, especially steel belt fracture. This paper makes an analysis and discussion on the steel belt fracture of chemical engineering container causes, characteristics and preventive measures.

Keywords: Chemical Engineering Container; Steel Belt; Fracture

1 Introduction

The chemical engineering container is widely used in chemical industry, especially in the reaction and extraction of substances, due to its large volume, high strength and corrosion resistance. Chemical engineering containers use steel belts to fix and seal the entire assembled parts and structures. However, due to improper use and combination, or damage caused by external chemical reactions, the steel belt of the chemical engineering container may be damaged, leading to steel belt fracture. Once the steel belt breaks down, there will be a safety plague and an important source of equipment failure. Therefore, the analysis and preventive measures of steel belt fracture are of great significance for energy conservation, equipment maintenance and production cost reduction.

2 Causes and Characteristics of Steel Belt Fracture

2.1 Causes of Steel Belt Fracture

There are many reasons for steel belt fracture of chemical engineering containers. Below are some common causes:

(1) Poor quality of raw materials. Steel belt materials are used for a long time, without replacing them, and thus resulting in the fracture of steel belts.

(2) Excessive weight of the container. If the weight of the equipment exceeds the limit of the steel belt, it will cause the steel belt to fracture.

(3) Temperature expansion or contraction. When temperature is too high or too low, it will cause the steel belt to expand or contract, and eventually fracture.

(4) Poor connection. Improper or poor welding, or poor welding protection, may cause the steel belt to fracture.

(5) Natural corrosion. If the different chemicals in the container corrode the steel belt of the container, it may cause the steel belt to fracture.

2.2 Characteristics of Steel Belt Fracture

The characteristics of steel belt fracture can be reflected from the following two aspects:

(1) Damage along the steel belt. The steel belt is cracked at the same place along the steel belt, which is a common phenomenon.

(2) Repeated damage. If the same fault appears in the same part of the steel belt repeatedly, it can generally be judged that it is a defect of the manufacturing process or the mate rials.

3 Taking Preventive Measures

The preventive measures mainly include:

(1) Improve workmanship. Pay attention to the assembly and welding of the steel belt and make effective protection.

(2) Regularly inspect and replace. Regularly inspect the steel belts of chemical engineering containers and replace them if necessary.

(3) Properly handle the temperature strategy. Properly handle the temperature of the container and the material inside it, keeping the temperature within a reasonable range to prevent the steel belt from being damaged.

(4) Pay attention to material selection. Choose superior materials for steel belts, as this can minimize the possibility of steel belt fracture.

(5) Take anti-corrosion measures. Adding anti-corrosion material in the container or spraying protective film on the surface of the container can prevent or reduce the corrosion of the steel belt.

Conclusion

Steel belt fracture of chemical engineering containers affects the normal operation of the unit and the safety of personnel. We can take some effective preventive measures to reduce the risk of fracture and ensure the safety of personnel and equipment.

References

[1] Xu Jingtao. Analysis of causes and preventive measures of steel belt fracture of chemical engineering containers[J]. Chemical Engineering Technology and Materials, 2019(3):93-95.

[2] Li Chang. Analysis and preventive measures of steel belt fracture of chemical engineering containers[J]. Chemical Equipment and Safety, 2020(1):123-125.

[3] Li Ming. Causes and preventive measures of steel belt fracture of chemical engineering containers[J]. Safety and Technology, 2019(6):89-90.

Steel straps play an important role in preventing damage of containers in the petrochemical industry. However, due to the relatively long use time, the steel straps will become brittle and even rupture due to external force. In order to maintain the normal operation of the containers, a regular inspection and maintenance of the steel straps are required.

Recently, the number of reported cases related to broken steel straps at container industry has steadily been increasing. Damage of the containers can range from partial deformity to complete structure failure, bringing potential danger to industry workers. Through an analysis of broken steel straps cases, the root cause of fractures can generally be traced to insufficient exhaust test, poor maintenance, and supply of defective steel straps.

In order to prevent broken steel straps from happening again, several proactive tests should be done for the quality control of steel straps. After buying the steel straps, companies are recommended to do the exfoliation test and the bearing tension test in order to detect any defects. In addition, the containers should be regularly roving regularly to ensure the steel straps are always in good condition.

To summarize, test and maintenance inspections on steel straps are priority to minimize and prevent fractures from happening. Companies should pay attention to both the quantity and quality of steel straps and perform regular inspections in order to ensure safety for industry workers and prevent container damage.