High-temperature resistant, heat-conductive, and anti-corrosion coating for fire-tube heaters in oil field heating systems

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In oil fields, the oil extracted from oil wells is called crude oil. Crude oil loses its fluidity at low temperatures and can even solidify. Once it solidifies, it blocks the pipes, and it is very difficult to get those pipes unblocked again. In addition, crude oil also contains waxes; in some types of crude oil, these waxes begin to precipitate at around 20°C and adhere to the pipe walls. When there is an excessive amount of such accumulation, it can cause blockages in the pipelines. Therefore, in order to maintain the good fluidity of crude oil, reduce the precipitation of wax, and prevent pipeline blockages, it is necessary to heat the crude oil after it emerges from the wellhead, ensuring that it remains at a high temperature to avoid blocking the pipelines. Vacuum heating furnaces are primarily used for heating crude oil at oil field wellheads. The furnace chamber consists of a combustion chamber, flue tubes, and coiled tubes; the heat generated within the combustion chamber and flue tubes heats the softened water in the chamber, producing steam, which then heats the coiled tubes through heat conduction, thereby raising the temperature of the crude oil inside those coiled tubes. The water temperature inside the furnace is between 85–90°C, while the temperature of the steam produced is around 90°C. What are the problems with vacuum heating furnaces? 1. Decrease in the strength of components such as flue pipes, fire tubes, and chimneys due to corrosion and aging ； 2. Burnout, cracking, and bulging of the flue tubes caused by overheating of the steel due to scaling ； How can the problems that occur in vacuum heating furnaces be solved? The ZS-722 thermal-conducting anti-corrosion coating uses an inorganic-organic high-temperature resistant modified film-forming solution developed independently by Zhisheng Wei Hua. It overcomes the drawback of low thermal conductivity associated with conventional organic coatings, with a temperature resistance of up to 750°C. Boron nitride is added to the filler, which provides excellent self-cleaning properties. Additionally, this coating has very good thermal conductivity, as well as excellent film-forming capabilities and high adhesion. This coating has stable chemical properties, can resist acids and alkalis for a long time, features high hardness and wear resistance, as well as a long service life. It completely overcomes the drawbacks in the market such as low thermal conductivity, limited temperature resistance, and short service life.