The heat exchanger is a device that transfers part of the heat of the hot fluid to the cold fluid. The process flow of the coking plant mainly includes coal preparation, coking, cold drum, desulfurization, ammonia evaporation, sulfur ammonia, and benzene stripping. The process flow includes multiple preheating, reboiling, condensation, cooling and washing operations. The heat transfer and heat flow transfer between various fluids are frequent, and the frequency of use of the heat exchanger is very high.
A large amount of oil stains, coke, sediments, flue gas dirt, etc. will be generated during the production process of the coking plant. The operation of the heat exchanger in the coking plant is mostly directly related to tar and volatile gases. Therefore, the dirt on the surface of the heat exchanger is often affected by the following types of pollution:
1. Tar and oil stains: The tar and oil stains generated during the coking process are easy to adhere to the surface of the heat exchanger, forming a thick oil film, which affects the heat exchange efficiency.
2. Coke deposition: Under high temperature conditions, the coke particles produced by coking are easy to adhere to the tube wall of the heat exchanger, forming a relatively hard sediment, resulting in poor heat flow and even blocking the pipeline.
3. Metal oxides and dust: Metal oxides and dust from flue gas may accumulate on the surface of the heat exchanger, affecting the heat exchange efficiency of the heat exchanger, and may also corrode the equipment and shorten the life of the equipment.
If these pollutants are not removed in time, the heat exchange efficiency of the heat exchanger will drop sharply, increase energy consumption, and may cause equipment damage or shutdown. Therefore, in order to ensure the heat transfer efficiency of the heat exchanger and extend the service life of the heat exchanger, regular cleaning of the dirt on the surface of the heat exchanger is a task that cannot be ignored in the production of the coking plant.
When facing these stubborn dirt on the surface of the heat exchanger in the coking plant, traditional chemical cleaning and manual cleaning methods are often difficult to remove these pollutants efficiently and thoroughly. As an advanced cleaning equipment, the high-pressure cleaning machine has become the preferred tool for cleaning the heat exchanger in the coking plant with its high efficiency, energy saving and environmental protection.
The ultra-high pressure water jet has a huge striking ability. The high-pressure water generated by the high-pressure pump is converted into a high-speed water jet through the nozzle, which is instantly released on the cleaned cleaning surface, forming wedge-shaped peeling, shear composite damage and jet impact on the cleaning surface to achieve the purpose of cleaning the surface of the object. High-pressure water jet cleaning is fast and thorough, will not cause secondary pollution, will not damage the substrate of the object being cleaned, and has a wide range of cleaning uses.
For the cleaning of stubborn dirt on the surface of the coking plant heat exchanger, Guangyuan Cleaning Equipment recommends the use of a 1500bar 50lpm ultra-high pressure cleaning machine, with a cleaning pressure of 1500bar, a flow rate of 50L/min, and an adjustable cleaning pressure. It is mainly used for cleaning heat exchangers in thermal power plants, nuclear power plants, refineries, furfural plants, etc., cleaning cold storage condensers, and cleaning heat exchangers in paper mills and other fields. The heat exchanger blockage clearance rate is 100%.
Guangyuan Cleaning Equipment GYB-5 1500 Ultra-High Pressure Cleaner-Heat Exchanger Cleaner uses a 160kw motor as the power source, and the high-pressure pump is a three-cylinder plunger pump. Its symmetrical power supply end design has top and bottom mounting holes and allows power conversion from the left shaft to the right shaft; in addition, its gearbox adopts an external design. The high-pressure pump is made of pure cast iron and uses a ductile iron power frame as a whole. It is an advantageous product in the industry. The tungsten carbide alloy plunger can ensure that it can still work normally under harsh conditions.
In the production process of the coking plant, the cleaning of the heat exchanger is very important. With its high efficiency, environmental protection and energy saving, the high-pressure cleaning machine has become the preferred equipment for cleaning the dirt of the heat exchanger. By regularly using a high-pressure cleaning machine to clean the heat exchanger, the heat exchange efficiency of the equipment can be effectively improved, energy consumption can be reduced, and equipment failures and downtime can be reduced, thereby providing a strong guarantee for the production stability and economic benefits of the coking plant.
