Analysis of Advantages and Disadvantages of Direct Steam Heating in Belt Dryer
The direct steam heating method of the belt dryer of Changzhou Yanjialong Drying Machinery Co., Ltd. also has the characteristics of large heating temperature range, generally can be controlled between 45 and 125 °C. If the temperature continues to increase, it is not impossible, but now it is domestic. The level of processing seems to be more difficult and risky for the manufacture of hot plates. On the other hand, the steam pressure of the equipment used is not too high, and the maximum temperature can reach 125 ° C, which basically meets the requirements of most users. Direct steam heating is faster than the other three heating methods, which can shorten the preparation time before production. Secondly, this heating method has fewer external components, small space, simple structure, and is convenient for maintenance, overhaul and maintenance. Despite a lot of efforts by the manufacturers, the direct steam heating method is still the worst performing of the four methods in terms of temperature accuracy control. This is because it belongs to the gaseous heat medium and the pressure control. There are too many uncertainties involved. In the production process, steam-heated vacuum belt dryers often experience transient temperature rises and dips, which are difficult to accept for materials with strict heating temperature requirements or appearance color requirements. Hot-dip galvanization is a form of galvanization. It is the process of coating iron and steel with zinc, which alloys with the surface of the base metal when immersing the metal in a bath of molten zinc at a temperature of around 840 °F (449 °C). When exposed to the atmosphere, the pure zinc (Zn) reacts with oxygen (O2) to form zinc oxide (ZnO), which further reacts with carbon dioxide (CO2) to form zinc carbonate (ZnCO3), a usually dull grey, fairly strong material that protects the steel underneath from further corrosion in many circumstances. Galvanized steel is widely used in applications where corrosion resistance is needed without the cost of stainless steel, and is considered superior in terms of cost and life-cycle. Galvanized Steel Pipes,Galvanised Pipe,Galvanised Steel Pipe JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.alibabagreenhouse.com