Heat exchangers are key equipment for energy-saving and tapping potential in the petrochemical industry. At the recent national chemical heat exchanger technology and equipment exchange meeting, Prof. Wang Qiuwang of the National Key Laboratory of Power Engineering for Power Engineering of the School of Energy and Power Engineering of Xi'an Jiaotong University announced that the research group he led has been successfully developed. Shell-side shell-and-tube heat exchangers" increase energy efficiency by 8.3% over traditional bow-type heat exchangers, and will not increase company costs, which is significant for chemical energy conservation. In industrial production such as petroleum, chemical, and energy, it is often necessary to heat a cryogenic fluid or to cool a high-temperature fluid, vaporize a liquid into steam, or condense vapor into a liquid. These processes need to be completed by heat exchangers. As of now, the shell and tube heat exchangers are commonly used in the petroleum and chemical industries. Although these traditional heat exchangers have been challenged by new products in recent years, they still occupy absolute advantages in the industry due to their simple structure, low cost, high pressure resistance, large operating flexibility, and wide application materials. Therefore, improving the energy efficiency of shell-and-tube heat exchangers with new technologies has become an urgently needed energy-saving measure in the industry.
Wang Qiuwang’s new generation heat transfer technology and high-efficiency heat exchange equipment research group has studied the shell-and-tube heat exchanger and found that in the traditional non-continuous single-shell heat exchanger, the leakage flow between the adjacent baffles in the triangular region Severe, resulting in less heat transfer at the same flow rate than other types of heat exchangers. The low heat transfer capacity has become a bottleneck that has plagued it. To solve this problem, they developed a continuous single-shell heat exchanger. On this basis, Wang Qiuwang and other leaders in China first put forward the concept of combined and multi-shell shell-and-tube heat exchangers, that is, external continuous + internal non-continuous, and designed the outer shell process for the continuous spiral baffle, inner shell The process is a modular multi-shell heat exchanger in the form of an arched baffle. This new type of combined continuous spiral multi-shell heat exchanger reduces the heat exchange resistance, while increasing the heat exchange energy efficiency by 8.3% compared with the traditional shell-and-tube heat exchanger. Moreover, through local optimization, the energy efficiency is expected to be further improved. In addition, although this new type of heat exchanger improves the energy efficiency, the cost does not increase. This technology has applied for 5 Chinese invention patents and 1 American invention patent.
Wang Qiuwang’s new generation heat transfer technology and high-efficiency heat exchange equipment research group has studied the shell-and-tube heat exchanger and found that in the traditional non-continuous single-shell heat exchanger, the leakage flow between the adjacent baffles in the triangular region Severe, resulting in less heat transfer at the same flow rate than other types of heat exchangers. The low heat transfer capacity has become a bottleneck that has plagued it. To solve this problem, they developed a continuous single-shell heat exchanger. On this basis, Wang Qiuwang and other leaders in China first put forward the concept of combined and multi-shell shell-and-tube heat exchangers, that is, external continuous + internal non-continuous, and designed the outer shell process for the continuous spiral baffle, inner shell The process is a modular multi-shell heat exchanger in the form of an arched baffle. This new type of combined continuous spiral multi-shell heat exchanger reduces the heat exchange resistance, while increasing the heat exchange energy efficiency by 8.3% compared with the traditional shell-and-tube heat exchanger. Moreover, through local optimization, the energy efficiency is expected to be further improved. In addition, although this new type of heat exchanger improves the energy efficiency, the cost does not increase. This technology has applied for 5 Chinese invention patents and 1 American invention patent.