How to choose a compressed air dryer

Compressed air dryer is a kind of equipment that mainly dries compressed air. Its function is to separate the water vapor from the compressed air, so as to achieve a water-free and oil-free state, and to purify it.

How to choose compressed air dryer?

One: the method of choosing the model

1. Compressor power (expressed in "horsepower" or "KW"): In general, when choosing, the compressor power should be within the range of process requirements, choose large not small.

2. Dryer capacity: Look at the total amount of gas you need to dry, whether it is much larger than the total amount of gas you need to dry.

3. Dryer capacity: If compressed air is used as the gas source, choose the total power of the compressor as 5-10 KW, and when compressed air is used as the gas source, choose the total power of the compressor as 10-15 KW.

4. drying efficiency: if the compressed air dryer air pressure ratio is above 85%, then there is no need to consider the dryer. But if the water content of compressed air is large, then you need to consider the equipment.

5. Inlet and outlet pressure: If the inlet of the press is connected between the pipeline and the pipeline, then this equipment can use compressed air directly without considering the inlet valve.

6. Capacity of air-using equipment: If the capacity of the air-using equipment is very large, it is necessary to consider the possible demand for air in the next few years, and it is necessary to choose a larger compression ratio to ensure normal operation.

7. Pressure dew point: If the product is required to contain water ≤ 2 ppm (i.e. water content is zero), then the appropriate model should be selected under this pressure.

Second: understand the site conditions

Understanding the site conditions is a prerequisite for the purchase of compressed air dryer, by understanding the site conditions, you can initially determine what kind of dryer the customer needs, such as: the customer requires the air dryness is less than 20, less than 1, which requires the selection of oil-free, water-free, low dew point dryer, and vice versa, it is necessary to choose a dryer with oil, water, high dew point.

1. understand the site working conditions: understand the ambient temperature and humidity of the site (you can use humidity detector or relative humidity tester), understand the actual use of the site (such as how much air compressor gas production, the number of gas-using equipment, etc.).

2. Look at the company brand: it is generally recommended to choose a strong manufacturer, the product quality and after-sales service is relatively guaranteed.

3. Look at the use effect: to understand the operation and see the drying effect, gas samples can be collected through the gas port for testing. In addition, you can also actually operate the test at the site to see if the actual operation of the machine is good.

III: Functions of the unit and selection

1. Single-function unit: It refers to the unit that can only dry compressed air and does not have other functions such as water and oil removal, and its price is lower. Although it has a single function, its operation is stable and the failure rate is low, so it is the most commonly used one in the domestic market at present.

Each function module in the multi-functional unit has its corresponding application scope, and it is enough to choose the appropriate function module according to the actual situation.

3. Combination unit: It refers to the unit with two or more functional modules working at the same time. It is more commonly used in the market and the price is also cheaper.

4. Combination compressor: It refers to the combination operation of two or more types of compressors, which has the characteristics of combining multiple function modules and operation methods. This combination is usually applied to the number of users and the operation of the higher requirements of the occasion. Different types of compressors can be combined as needed and adjusted to achieve the best energy saving and operation effect.

IV: Precautions

1. Before using the compressed air dryer, make a comprehensive inspection, especially for the compressor, storage tank, condenser, filter and other equipment, must be carefully checked to ensure the normal operation of the components.

2. If the compressed air dryer is not maintained, it will lead to various problems, which will result in lower production efficiency.

3. Since the operation of the compressed air dryer is relatively simple, it must be operated in strict accordance with the instructions when using it to avoid safety problems.

4. For the compressed air dryer, it mainly works in the form of oil-free. Therefore, when using it, you must do a good job of cleaning.

5. Before using the compressed air dryer, you need to exhaust it first, this is to avoid some dust, particles into the compressor affect the service life. At the same time in the process of use should also pay attention to the temperature of the environment, not too high or too low.

6. In the installation of compressed air dryer need to ensure that it can be stable operation. If it is a stand-alone operation, then try to install it in the drying room, which can reduce its operating costs.

V: drying and after-sales service

After-sales service: users can contact us for after-sales treatment at any time if they find problems with the product in use, without the need to make an appointment in advance and without affecting production.

1. The strength of the after-sales service company: If the service company is strong enough and has technical personnel to maintain the equipment, the after-sales service of such equipment will be better.

2. The experience of maintenance personnel: equipment in the process of use, there may be problems, then we need an experienced maintenance personnel to give the equipment to overhaul, so as to better ensure the normal operation of the equipment.

3. After-sales personnel's attitude: If the after-sales personnel treat customers poorly and speak to users in a poor tone, this will also affect the user's impression of the company.

4. Whether the after-sales service is timely: If the service is timely and considerate, then we do not need to worry about the equipment in the process of use will have problems. At the same time, we should also examine whether the after-sales service company's after-sales service is timely.

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