Jul 05, 2017
Cake Cooler Mainly used for cooling
The cooler uses a new type of high quality materials and advanced process technology, mainly used for cooling fluid, the application range is very wide. The cooler is also a kind of heat exchange equipment, usually with parallel air as a coolant to remove heat. The cooler has good effect in industrial equipment, but it is easy to produce scale effect. Here I tell you about the cooler in the cause of the reasons for the scale and cleaning methods.
The cooler is a tube-type heat exchanger, which is most commonly used in power systems and steelmaking. The device allows two kinds of liquid media with a certain temperature difference to achieve heat exchange, so as to achieve the effect of reducing oil temperature. Cooling, rolling mill hydraulic lubrication system cooling has a very good effect, to ensure that the steam turbine, rolling mill and other equipment, the normal operation. So in the industrial equipment occupies a large proportion.
At present, most of the coolers on industrial equipment use circulating water cooler. During the heat exchange process, the cooling water absorbs the heat of the oil and the temperature rises. At this time, Ca (HCO3) 2 and Mg (HCO3) The effect of temperature on the precipitation of CO2 to produce slightly soluble in water CaCO3 and MgCO3. Since the solubility of CaCO3 and MgCO3 decreases with increasing temperature and crystallizes from water, when these crystals are continuously deposited on the surface of the circulating water cooler, scale is formed, which affects the heat exchange efficiency and increases the energy consumption. Heat exchanger cooling effect decreased, resulting in gear oil, oil oil temperature rise, causing oil aging, equipment loss and other issues.
In order to avoid the cooler efficiency after the generation of scale, the cooler should be cleaned in time. The main cleaning method of the cooler is manual cleaning, chemical cleaning and cleaning machine cleaning. Manual cleaning is the use of cleaning equipment on the cooler for manual cleaning, is the most traditional way of cleaning; chemical cleaning in the cleaning effect than artificial clean, with a special chemical agent on the cooler cleaning, cleaning effect is good; Cleaning is the use of high-pressure water to produce scale at the rinse, so as to achieve the purpose of descaling
Coolers in use to regular cleaning and maintenance, in order to maintain its long-term use.
Tube-type cooler tube-type science and technology, through a professional manual design reasonable manufacturing, the scope of application is very wide. Tubular coolers in use, the tube part of the general contact with the industrial cooling water, and industrial cooling water impurities, salts, gases, microorganisms will constitute the tube plate and weld corrosion, which is what we often say Chemical corrosion. Here we analyze the five factors for the corrosion of the cooler.
Tubular cooler corrosion factors:
1, the media composition and concentration: the impact of different concentrations, for example, in hydrochloric acid, the greater the general concentration of the more serious corrosion. Carbon steel and stainless steel in the concentration of about 50% of the sulfuric acid corrosion in the most serious, and when the concentration increased to 60% or more, the corrosion but a sharp decline;
2, harmful impurities: harmful impurities, including chloride, sulfur, cyanide, ammonia ions, these impurities in some cases will cause serious corrosion
3, the ambient temperature: corrosion is a chemical reaction, the temperature of each increase of 10 ℃, corrosion rate increased by about 1 to 3 times, but there are exceptions;
4, liquid ph value: the general ph value is smaller, the greater the corrosion of metal;
5, the flow rate of liquid: In most cases the greater the flow rate, the greater the corrosion.