Introduction:

In the field of industrial production and equipment maintenance, the coalescence dehydration oil filterplays a crucial role. It can effectively remove moisture and impurities from oil products, extend the service life of oil products, and ensure the normal operation of equipment. However, facing the wide variety of coalescence dehydration oil filters on the market, how to accurately select them has become a key issue for enterprises. Starting from multiple key factors, we will elaborate on the key points of selection in detail.

Processing oil characteristics

1.Oil type

Different types of oil products have different chemical compositions and physical properties, which directly determine the selection direction of coalescence dehydration oil filters. For example, for lubricating oil, there are two common types: mineral oil and synthetic oil. Mineral oil contains a large amount of aromatic hydrocarbons, cycloalkanes, and other components, and its viscosity is greatly affected by temperature, which may thicken at low temperatures; Synthetic oil has a more stable chemical structure and superior performance. If dealing with mineral oil, the oil filter needs to consider its ability to cope with large viscosity changes, such as equipping heating devices to reduce oil viscosity and facilitate the separation of moisture and impurities; For synthetic oil, the key is to maintain its chemical stability and prevent adverse reactions between the filter material and it, which may affect the quality of the oil.

2.water content

The initial moisture content of oil is an important basis for selection. For oil products with low moisture content (such as 0.1% -0.5%), conventional coalescence dehydration oil filters may be able to meet the requirements; But when the water content reaches 3% -5% or even higher, such as in the lubricating oil system or crude oil pretreatment stage of some old equipment, it is necessary to choose an oil filter with efficient agglomeration performance and multi-stage dehydration structure. This type of oil filter uses a layer by layer progressive approach, first using hydrophilic filter materials to aggregate and grow tiny water droplets, and then using various means such as gravity and centrifugal force to achieve complete separation of water and oil, ensuring that the water content of the processed oil is reduced to an extremely low level and meeting the subsequent equipment operation requirements.

3.Impurity composition and content

Impurities in oil products include various types such as metal particles, dust, fibers, etc. In the cutting fluid recycling process of the mechanical processing industry, there is a large amount of metal debris. At this time, the oil filter not only needs to have good filtration accuracy to intercept small particles and prevent them from causing wear to the equipment, but also needs to have impact resistance and easy cleaning characteristics to avoid the accumulation of metal debris blocking the filter material. For oil products containing a high amount of fiber impurities, such as thermal medium oil in the textile printing and dyeing industry, the filter structure of the oil filter should be designed reasonably to prevent fiber entanglement, ensure smooth and unobstructed filtration process, and maintain long-term stable operation of the oil filter.

Processing capacity requirements

1.Hourly processing capacity

The production scale of the enterprise and the amount of oil used in the equipment determine the hourly processing demand of the coalescence dehydration oil filter. The total amount of lubricating oil in the lubrication system of large steel plants, power plants, etc. can reach tens or even hundreds of tons, and the continuous operation of the equipment requires high timeliness of oil purification. Therefore, it is necessary to choose oil filters with strong processing capacity, which can handle several cubic meters or even higher per hour. On the contrary, in small precision machining workshops, equipment consumes less oil, the frequency of oil replacement is relatively low, and oil filters with small processing capacities (such as tens of liters per hour) can meet daily maintenance needs, ensuring oil quality and avoiding equipment investment waste.

2.Maximum single processing capacity

Considering that some companies may have centralized processing of oil products, such as regular cleaning and maintenance of oil storage tanks, the maximum single processing capacity of the oil filter becomes particularly important. It needs to be able to meet the requirement of purifying all the oil in the tank within a certain period of time, ensuring that the quality of the oil is restored to a usable state, and avoiding long-term storage and deterioration of the oil due to insufficient processing capacity, which will affect subsequent use. This involves a comprehensive design of multiple factors such as the tank capacity of the oil filter, the number of filter elements, and the flow rate of the supporting pump. When selecting, accurate calculation and matching should be based on the actual maximum single processing demand.

Filtering accuracy requirements

1.Particle filtration accuracy

Determine the particle filtration accuracy of the coalescence dehydration oil filter based on the precision requirements and operational sensitivity of key components of the equipment. In the aerospace field, aircraft engines are extremely sensitive to particle impurities in lubricating oil, and even tiny metal particles can cause serious malfunctions. Therefore, it is required that the particle filtration accuracy of oil filters reach the micron or even sub micron level to ensure the ultra-high purity of lubricating oil and ensure flight safety. For general industrial equipment, such as ordinary machine tools, a particle filtration accuracy of around 10-20 microns is sufficient for normal operation, preventing excessive precision filtration from causing high costs and unnecessary maintenance difficulties.

2.Moisture removal accuracy

For industries with strict requirements for moisture content, such as pharmaceuticals and electronic chip manufacturing, the coalescence dehydration oil filter not only needs to remove a large amount of free water, but also needs to accurately control the dissolved water content. Taking the pharmaceutical industry as an example, the high moisture content of reaction solvents, drugs, etc. in the drug production process may affect the stability of drug quality and the efficacy of active ingredients. It is required that the oil filter control the moisture removal accuracy within tens of ppm (parts per million), which requires the use of special aggregation materials and dehydration processes, such as molecular sieve adsorption, vacuum dehydration and other technologies, to achieve deep dehydration and meet strict quality standards in the industry.

Operational environment considerations

1.temperature range

The temperature environment in industrial sites varies greatly. In high temperature environments, such as steel smelting workshops, where the ambient temperature is consistently high and the viscosity of the oil decreases, the internal components of the oil filter face the risk of thermal aging. At this time, the selected oil filter should have high temperature resistance, including high temperature resistant filter materials, seals, and heat dissipation design, to ensure stable operation under high temperature conditions and effective dehydration and impurity removal; In low-temperature environments, such as the lubrication system of outdoor wind power generation equipment in northern winter, the oil is prone to solidification. The oil filter needs to be equipped with a heating and insulation device to ensure that the oil can smoothly enter the filter for processing and maintain normal lubrication and operation of the equipment.

2.Workplace space

The size of the site space limits the external dimensions and installation layout of the oil filter. For workshops with limited space, such as ship engine rooms, it is required that the oil filter has a compact structure and small footprint. Wall mounted and modular design oil filters can be used for easy installation and maintenance; In the independent oil processing workshop of large factories, there is relatively ample space, and large integrated and highly automated oil filters can be selected for centralized management and large-scale oil processing, improving work efficiency.

Maintain convenience

1.Convenient replacement of filter element

The filter element, as the core component of the coalescence dehydration oil filter, needs to be replaced regularly. When selecting, attention should be paid to the difficulty of replacing the filter element, such as whether the filter element is easy to disassemble and install, and whether there is a convenient channel for replacing the filter element, in order to avoid complex disassembly processes that may cause long downtime. Some advanced oil filters adopt a quick release filter element design, which does not require professional tools and can be replaced within minutes, greatly improving equipment maintenance efficiency and reducing enterprise operation and maintenance costs.

2.Cleaning and maintenance requirements

In addition to the filter element, the tank body, pipelines, pumps, and other components of the oil filter also need to be regularly cleaned and maintained to prevent the accumulation of impurities and the adhesion of oil sludge. When selecting, consideration should be given to whether the structural design of the components is easy to clean, such as whether the interior of the tank is smooth and free of dead corners, whether the pipeline connections are easy to disassemble, and whether the impeller of the pump is easy to clean. At the same time, the selection of supporting cleaning tools and cleaning agents should also be taken into consideration to ensure that the entire maintenance process is efficient, safe, and environmentally friendly.

Introduction:

The selection of a coalescence dehydration oil filter is a process that comprehensively considers multiple factors. Enterprises need to start from key aspects such as processing oil characteristics, processing capacity, filtration accuracy, operating environment, maintenance convenience, and cost-effectiveness, accurately matching demand and product characteristics, in order to select the most suitable coalescing dehydration oil filter for their own production and operation, ensuring long-term stable operation of the equipment, and enhancing the economic benefits and competitiveness of the enterprise.

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