Cleaning of plate heat exchanger
Category：2017-12-29 Number of reading：5570
Plate heat exchanger is a heat exchanger in a compact and efficient, but the heat of high temperature, the internal circulation of small aperture, easy scaling, caused by the plate heat exchanger efficiency is reduced, thus affecting the normal production and equipment safety, so the chemical cleaning method of removing dirt. This paper introduces two chemical cleaning methods for plate heat exchanger, which are dismantling and cleaning, cleaning, neutralization, passivation, pre membrane treatment and cleaning. It provides a reliable guarantee for scale removal of plate heat exchangers.
Plate heat exchanger is a heat exchanger in a compact and efficient, it has high efficiency of heat transfer (heat transfer coefficient of heat exchanger is 3~5 times higher than in tube type), small footprint (for heat exchanger 1/3), long service life, small investment, easy cleaning, reliable and durable. In recent years, is widely used in metallurgy, petroleum, pharmaceutical, shipbuilding, textile, chemical, pharmaceutical, food and other industries, is the excellent equipment to realize heating and cooling, heat recovery, rapid sterilization purposes. However, the plate heat exchanger has high heat exchange temperature (especially the steam water exchange), and its heat transfer efficiency is high, so it is very easy to scale. At the same time, the plate heat exchanger has small internal circulation diameter, which makes the section of internal channel smaller or even clogged after scaling, resulting in the reduction of heat exchange efficiency of plate heat exchanger, thus affecting the normal production and safety of equipment. Therefore, the plate heat exchanger should be cleaned regularly to remove dirt to ensure the high efficiency of heat exchange and the normal production of the plate heat exchanger.
Brief introduction of 1 plate heat exchanger
Plate heat exchanger is a heat exchanger made of thin metal plate (usually stainless steel), which is pressed into a wavy heat exchanger plate with a certain shape and then encrypted and sealed. It is mainly composed of heat transfer plate, sealant pad, clamping bolt, pressing plate, machine frame and other parts. The cold and hot medium passes through the adjacent heat transfer plates and passes through their respective passages. The middle layer is heat exchangers through a thin heat exchange plate. Therefore, it has high efficiency and energy saving, high heat transfer coefficient, safe and reliable use, compact structure, small volume, less land occupation, flexible combination and convenient adjustment and maintenance.
Plate heat exchanger is a heat exchanger in a compact and efficient, it has high efficiency of heat transfer (heat transfer coefficient of heat exchanger is 3~5 times higher than in tube type), small footprint (for heat exchanger 1/3), long service life, small investment, easy cleaning, reliable and durable. In recent years, is widely used in metallurgy, petroleum, pharmaceutical, shipbuilding, textile, chemical, pharmaceutical, food and other industries, is the excellent equipment to realize heating and cooling, heat recovery, rapid sterilization purposes. However, the plate heat exchanger has high heat exchange temperature (especially the steam water exchange), and its heat transfer efficiency is high, so it is very easy to scale. At the same time, the plate heat exchanger has small internal circulation diameter, which makes the section of internal channel smaller or even clogged after scaling, resulting in the reduction of heat exchange efficiency of plate heat exchanger, thus affecting the normal production and safety of equipment. Therefore, the plate heat exchanger should be cleaned regularly to remove dirt to ensure the high efficiency of heat exchange and the normal production of the plate heat exchanger.
Brief introduction of 1 plate heat exchanger
Plate heat exchanger is a heat exchanger made of thin metal plate (usually stainless steel), which is pressed into a wavy heat exchanger plate with a certain shape and then encrypted and sealed. It is mainly composed of heat transfer plate, sealant pad, clamping bolt, pressing plate, machine frame and other parts. The cold and hot medium passes through the adjacent heat transfer plates and passes through their respective passages. The middle layer is heat exchangers through a thin heat exchange plate. Therefore, it has high efficiency and energy saving, high heat transfer coefficient, safe and reliable use, compact structure, small volume, less land occupation, flexible combination and convenient adjustment and maintenance.