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Two-phase fluids for large air separation unit heat exchangers

Two-phase fluids for large air separation unit heat exchangers
Two-phase fluids have a significant impact on the heat transfer performance of the heat exchanger fluid. Two-phase fluids make the inhomogeneity even greater, leading to a reduction in the performance of heat transfer. The problem of inhomogeneous distribution of two-phase fluids is more serious than that of single-phase flow.
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Jul 10, 2020
In the morning of July 10, DEAR air separation Design and Research Institute held a training meeting in the conference room on the first floor. The me
Jul 03, 2020
On July 2, it was reported that according to the Science and Technology Bureau of Shunhe District, Kaifeng City, DEAR air separation won the 2019 year
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Type 8000/2000-240 solution for small and medium-sized air separation plant in circular economy industry
Circular economy is also characterized by resource conservation and recycling, which is a harmonious economic development mode with the environment. All materials and energy can be used reasonably and persistently in this continuous economic cycle, in order to reduce the impact of economic activities on the natural environment as small as possible. As an emerging industry, the market development in the future is inestimable.
2400/1000-type solution for small and medium-sized air separation plant in nonferrous industry
Formulate construction guidelines for non-ferrous metal intelligent mines and factories, and guide the construction of industry intelligent standardization. Reducing production energy efficiency and overall controllable cost, promoting the rapid iteration of production equipment and improving enterprise profits are the problems that need to be solved urgently in current industry. Recently, DEAR air separation cooperated with customers and signed a 2400/1000-type small and medium-sized air separation plant project, which was highly recognized by customers through reasonable scheme design.
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When the output pressure of turbine air compressor is constant, when the flow rate decreases to a certain value, surge will occur. Therefore, it is necessary to control the flow rate of the turbine air compressor and prevent its flow value from entering the surge zone. However, when the system resistance increases, the flow rate will surely decrease, which makes it possible for the flow value to enter the surge zone. Therefore, the common solution is to add a bypass valve from the outlet to the inlet or vent. When the turbine air compressor is normal, the valve is closed. The flow rate is reduced to a certain value, and then the flow through the turbine air compressor is increased.
Mar 14, 2025
1. It is easy to produce air hole when the flux is wet 2. If the welding speed is too fast, it is easy to produce welding porosity 3. Welding gas hole caused by welding wire rust or oil stain 4. The welding seam has rust, oxide film, grease and other organic impurities, resulting in welding porosity 5. It is easy to produce air hole when welding with improper polarity 6. Welding porosity caused by flux contamination 7. Insufficient height of flux is easy to produce welding porosity 8. If the height of flux is too high, the gas is not easy to escape and the welding porosity is easy to be produced
Feb 10, 2025
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