Maintenance and repair of chemical equipment
The working environment of chemical equipment is often harsh, not high temperature and high pressure, vacuum or ultra low pressure, which is prone to corrosion, burning and explosion. The cost of chemical products itself is relatively expensive, and it is shouldering the arduous task of production. Once a failure occurs, it will inevitably cause huge economics to the enterprise at any time. In severe cases, it will cause casualties and adverse social impact. The maintenance and repair of chemical equipment will surely be a subject that keeps pace with the times and requires more careful and hard work from technicians.
1 Operating characteristics and maintenance requirements of chemical equipment
01 Operating characteristics
Different from ordinary production equipment, chemical equipment has long been working under the harsh conditions of high temperature, high pressure, explosive, and corrosive.
02 Maintenance requirements
1) Keep it clean. During the daily operation, the operating environment and the equipment itself should be cleaned to avoid the equipment being exposed to chemical particles in the air.
2) Make sure to connect. Once the connection between the pipeline and the line is loose, it will not only affect the normal operation of the equipment, but also cause leakage of flammable and explosive substances and harmful substances.
3) Pay attention to safety. The safety mentioned here includes the safety of maintenance personnel and the safety of equipment.
4) Good lubrication. Equipment is the carrier of industrial production, and good equipment operation depends on good equipment lubrication.
2 Fault characteristics and classification of chemical equipment
The so-called fault refers to the loss of some or even all of the functions of the device, which causes the component to be damaged to varying degrees. In general, the failure of chemical equipment mainly has the following two characteristics.
01 Concealment
The occurrence and development of equipment failure can be roughly divided into three stages, namely, incubation period, development period and destruction period. In the latent stage (initial stage), the fault is more concealed, and it is hard to detect that some small differences gradually spread, which ultimately affects the normal operation of the equipment, and seriously leads to the overall paralysis of the equipment.
02 Randomness
In addition to concealment, chemical equipment failures also have some randomness. There are many reasons for this randomness, including the randomness of working conditions and operating environment, the randomness of the combination of component failures, the dispersion of manufacturing processes and raw materials, and the uncertainty of maintenance conditions.
03 Difference
The same equipment, its fault is also different, which is the difference in chemical equipment failure. The reason for this difference is mainly the difference in service life and frequency of failure caused by different operating environments and task strengths.
04 Classification of faults
Chemical equipment failures can be divided into two broad categories: non-preventable faults and preventable faults.
3 Daily maintenance and maintenance methods for chemical equipment
In order to understand the operation of the equipment for the first time, the equipment maintenance personnel must draw up a careful plan to repair and adjust the chemical equipment in the shortest time when the fault occurs.
Inspection of chemical equipment should be carried out in a roving system. In addition to the maintenance personnel, the inspectors should also include technical personnel and operators.
In order to improve the efficiency of inspection and maintenance, you can use the computer for software detection and signal detection, which will not only affect the normal production of the enterprise but also be very safe.
4 chemical equipment fault repair method
The maintenance plan must strictly follow the maintenance and operation procedures of chemical equipment, and fully consider the overall situation of the enterprise and the daily operation of the equipment. Otherwise, the maintenance plan will be lack of scientificity. The article will be explained by examples.
In chemical equipment, the zero position of the valve positioner is generally required. The main function of the valve positioner is to control the valve by setting the signal, feedback measurement signal and output signal. The fault of the valve positioner is mainly information fault. Once a fault occurs, the technician will generally solve the problem by resetting the setting parameters of the input and output processes. But this is only a matter of expediency, and it is difficult to solve the problem fundamentally. To completely troubleshoot, you must thoroughly analyze the cause of the failure. The causes of the positioner failure are various, which may be caused by the working environment, may be caused by improper operation of the operator, or may be caused by defects in the design of the control system, or may be caused by overload operation. of.
5 Essential qualities of chemical equipment maintenance personnel
01High security awareness
Provide safety operation training to maintenance technicians to improve their safety awareness. Equipment maintenance personnel must operate in strict accordance with the operating procedures in the specific operation process, and work under the premise of ensuring personal safety.
02 Excellent technical level
As an excellent chemical equipment maintenance personnel, not only do you have a good understanding of the design principles of the equipment, but more importantly, you must acquire more professional equipment performance, construction and operation knowledge. Chemical enterprises should form a strong learning atmosphere within the enterprise, and appropriate funds should be invested in the training of equipment maintenance personnel. Equipment maintenance personnel should consciously delve into their professional knowledge and develop professional skills.
6 Conclusion
With the increasing competition in the world chemical industry, it has created many favorable conditions for the development of China’s chemical industry. Under such a historical background, a number of strong and competitive chemical companies have emerged in China, which has promoted the development of China’s chemical industry. Chemical equipment is the right arm of chemical companies. The maintenance and repair of these equipments is directly related to the production efficiency and profit level of the enterprise.
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