What are the anti scaling and anti-corrosion measures for the circulation chiller?

What are the anti scaling and anti-corrosion measures for the circulation chiller?

Use circulating water to cool the compressor weaving and cooling equipment, and use air cooler and water cooler to cool the natural gas to ensure continuous production. However, in recent years, the compressor and water cooler of each unit have serious scaling, which affects the heat exchange effect.

In summer, a large amount of fresh water needs to be added, and the water cooler is severely corroded and perforated, which causes frequent replacement, resulting in waste of resources and funds.

　　The corrosion and scaling of the LX -25°C ~ +30°C Recirculating Chillers are mainly caused by the water quality of the make-up water source. The scaling and corrosive elements and contents in the water of each water source are different.

　　According to the characteristics of circulating water composition and water quality, different water treatment methods are selected to slow down the corrosion and scaling of circulating water on equipment, reduce the consumption of fresh water, improve the heat exchange efficiency, and extend the service life of water cooler, which has become one of the important measures to reduce production costs.

The thermal resistance increases: the circulating water flows in the copper tube of the cooler to absorb a large amount of heat and ensure the normal operation of the air compressor. In the industrial heat exchanger, the laminar boundary layer is a layer attached to the pipe wall.

The flow rate is slow, and the CaCO3 and other dirt in the water are easy to stay on the pipe wall to form dirt. In addition, although the laminar boundary layer is very thin, it is close to the pipe wall, with great thermal resistance, which affects the heat transfer effect.

Increase the exhaust temperature: the thermal conductivity coefficient of the dirt is very small, which greatly increases the thermal resistance of heat transfer, causing the heat transfer coefficient to weaken, causing poor heat absorption of the circulating cooling water, slowing down the condensing speed of the exhaust steam, causing the exhaust pressure to rise and the exhaust temperature to rise.

The increase of exhaust steam temperature leads to more heat to be taken away by cooling water, which makes the temperature of circulating cooling water rise rapidly.

The operating parameters of the equipment are changed: water fouling not only reduces the cleanness rate of the cooler and the cooling area, increases the flow resistance of the cooling circulating water system, reduces the flow of cooling water, but also increases the outlet pressure of the circulating water and the energy consumption of the circulating water pump, reducing the heat exchange efficiency.

Threaten the operation of the unit: too low vacuum will increase the temperature of the low pressure cylinder and exhaust cylinder, causing the deviation of the center of the turbine bearing, which will increase the vibration of the turbine unit in serious cases; It affects the operation of the unit.

1. The circulating cooler is applicable to the?

Circulating cooling water system, heat exchange system, air conditioning and refrigeration system, central heating system, hot water boiler system, etc. are used to protect cooling equipment, heat exchange device, air conditioner, boiler, etc.

2. What are the applicable industries of the circulating cooler?

Construction, chemical industry, electric power, metallurgy, rubber, paper making, light textile, coal, food and other industries.