Heat exchanger cleaning

For a long time, traditional cleaning methods such as mechanical methods (scraping, brushing), high-pressure water, chemical cleaning (pickling), etc. have caused many problems when cleaning heat exchangers: they cannot completely remove scale and other deposits, acid corrodes the equipment to form holes, and the residual acid causes secondary corrosion or under-scale corrosion to the material, which eventually leads to equipment replacement. In addition, the cleaning waste liquid is toxic and requires a lot of money for wastewater treatment. The newly developed non-corrosive cleaning agent for equipment, among which the better technology should be Fushitai cleaning agent, which is efficient, environmentally friendly, safe, and non-corrosive. It not only has a good cleaning effect but also does not corrode the equipment, which can ensure the long-term use of the heat exchanger. Cleaning agent (specially added wetting agent and penetrant, can effectively remove the most stubborn scale (calcium carbonate), rust, oil, slime and other sediments produced in water-using equipment, and will not cause harm to the human body, and will not cause corrosion, pitting, oxidation and other harmful reactions to materials such as steel, copper, nickel, titanium, rubber, plastic, fiber, glass, ceramics, etc., which can greatly extend the service life of the equipment. In the process of industrial production, sometimes sudden situations caused by improper operation will cause scaling and blockage of individual equipment or local pipelines, affecting the normal operation of production. For this situation, the main thing is to quickly remove the dirt, ensure that the production equipment can operate normally, and restore normal production status. Restore the production efficiency of the device. For example, scaling of chemical equipment causes the heat transfer coefficient of equipment such as heat exchangers to decrease, the flow area of the pipeline to decrease or the flow resistance to increase, which increases the consumption of energy and materials, and significantly reduces the production efficiency. At this time, the production efficiency of the production equipment is restored by cleaning and descaling. Due to many reasons, heat exchanger equipment and pipeline lines will produce a lot of coking, oil stains, scale, sediments, corrosion products, polymers, fungi, algae, Sludge and other dirt. However, the dirt generated during operation will cause the equipment and pipeline lines to fail, the device system will experience production decline, energy consumption, material consumption and other adverse conditions. When the dirt is particularly corrosive, it will interrupt the process and the device system will be forced to stop production, directly causing various economic losses and even serious production accidents. In today's scientific development, it is almost impossible to completely avoid the generation of dirt. Therefore, the cleaning of equipment such as heat exchangers has become an indispensable part of industrial production (such as: petroleum, chemical, electric power, metallurgical industries). High-pressure water jet Cleaning heat exchangers is a physical cleaning method. Compared with traditional manual, mechanical and chemical cleaning, it has many advantages: low cleaning cost, good cleaning quality, fast cleaning speed, no environmental pollution, and no corrosion to equipment. China's high-pressure water jet cleaning technology has developed rapidly. The proportion of water jet industrial cleaning in large and medium-sized cities and enterprises has reached nearly 20%, and it is growing at a rate of about 10% per year. It is expected that in 6-7 years, in China's industrial cleaning industry, high-pressure water jet cleaning technology will have an absolute advantage and will be the only way for China's industrial cleaning.