The status of the heat exchanger industry

The status of the heat exchanger industry

Heat exchangers are often used in industrial production such as petroleum, chemical, light industry, pharmaceuticals, and energy to heat or cool low-temperature fluids, vaporize liquids into steam, or condense steam into liquids. A heat exchanger can be a type of unit equipment, such as a heater, cooler, and condenser; It can also be a component of a certain process equipment, such as a heat exchanger in an ammonia synthesis tower. Heat exchangers are important unit equipment in chemical production. According to statistics, the tonnage of heat exchangers accounts for about 20% of the entire process equipment, and some even up to 30%. Its importance can be imagined.

01 Shell and tube type

Shell and tube heat exchangers are a large and diverse product that urgently requires new wear-resistant, corrosion-resistant, and high-strength materials. China has made varying degrees of progress in the development of stainless steel copper alloy composite materials, aluminum magnesium alloys, and non-metallic materials such as silicon carbide, among which titanium materials have developed rapidly. Titanium has good corrosion resistance to seawater, chlor alkali, acetic acid, etc. If heat transfer is further strengthened, the effect will be better. Some manufacturing units have already mastered the processing and manufacturing technology of titanium materials. For the spraying of materials, China has introduced production lines from abroad.

Aluminum magnesium alloy has high corrosion resistance and thermal conductivity, and is cheaper than titanium material, which should be noted. Significant achievements have been made in domestic research on improving the performance of heat exchangers, enhancing heat transfer efficiency, reducing heat transfer area, reducing pressure drop, and increasing device thermal intensity in areas such as energy conservation and efficiency enhancement. The extensive use of heat exchangers effectively improves energy utilization, reduces enterprise costs, and improves efficiency.

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