When should VOC waste gas treatment equipment be replaced? Basis for judging equipment aging and efficiency decline

    VOCWaste gas treatment equipmentAfter a period of use, problems such as performance degradation, increased malfunctions, and rising operating costs may occur. To determine whether the device should be replaced, evaluation can be conducted from the following aspects.

Processing efficiency is the core indicator for determining the status of equipment. If the export concentration of the equipment continues to exceed the emission standards, or the removal rate is significantly lower than the design value, it indicates that the equipment can no longer meet environmental requirements. Regardingactivated charcoalAdsorption equipment, the removal rate will significantly decrease after activated carbon saturation, but it can be restored after carbon replacement, which is normal maintenance. If the decrease in efficiency is caused by a problem with the main body of the equipment, such as rusting and air leakage of the activated carbon box, or insufficient air flow due to aging of the fan, maintenance or replacement needs to be considered. For membrane condensation equipment, if the recovery rate cannot be restored to normal levels after cleaning the membrane components, it indicates that the membrane components have reached the end of their lifespan.

The continuous increase in operating costs is also one of the criteria for judgment. After equipment aging, energy consumption will increase, such as the decrease in efficiency of refrigeration compressors leading to an increase in power consumption, and the wear of fan bearings leading to an increase in current. The frequency of replacing activated carbon in activated carbon adsorption equipment is increasing, indicating that substances that may cause activated carbon poisoning may have been mixed in the exhaust gas, or the sealing of the equipment may have deteriorated.RTOThe gas consumption of the equipment has been increasing year by year, which may be due to the breakage of the thermal storage ceramic body causing a decrease in heat recovery efficiency, or the poor sealing of the switching valve causing a short circuit in the exhaust gas. When the cumulative cost of maintenance and increased energy consumption approaches or even exceeds the price of new equipment, replacing it becomes more cost-effective.

The frequency of malfunctions and the difficulty of maintenance are also important references. As the service life of the equipment increases, various components gradually reach their end of life, and failures will become more and more frequent. If there are multiple malfunctions within a year and each repair requires a few days of downtime, affecting normal production, then it is necessary to consider replacing it with a new one. In addition, the parts of old devices may have been discontinued, and parts cannot be purchased or are expensive, making maintenance uneconomical. In this case, replacing them with new ones is also a reasonable choice.

The safety situation is the most important concern. When equipment experiences issues such as shell corrosion, perforation, pipeline leakage, aging of electrical circuits, decreased insulation, and damage to explosion-proof structures, it can pose safety hazards. For equipment that deals with flammable and explosive exhaust gases, safety issues have the highest priority. If the cost of safety rectification is too high or cannot be completely repaired, new equipment should be replaced immediately.

The service life of the equipment can refer to the following range. The main body of activated carbon adsorption equipment is eight to ten years old, but activated carbon is a continuous consumable. The main body of catalytic combustion equipment should be replaced every eight to twelve years, and the catalyst should be replaced every one to two years. The main body of the thermal storage oxidation equipment needs to be replenished every ten to fifteen years, and the ceramic body needs to be replenished every five to eight years. The main body of the membrane condensation equipment is replaced every fifteen to twenty years, the membrane components are replaced every three to five years, and the compressor is replaced every eight to ten years.

It is recommended that enterprises establish equipment operation records, regularly recording processing efficiency, energy consumption data, and fault situations. This will enable timely detection of performance decline trends and make replacement plans before the equipment completely fails. LuoyangWohong PetrochemicalEquipment Co., Ltd. can provide evaluation suggestions based on the condition of customers' old equipment and customize replacement plans. The company is located in W2-1, Dongda Science and Technology Industrial Park, Luoxin Industrial Agglomeration Zone, Xin'an County, Luoyang City, with the website www.wohongshihua.com.