A rectification tower tray and rectification tower for improving heat and mass transfer performance

Abstract

The invention discloses a rectification tower plate for improving heat transferring and mass transferring performance and a rectification tower and belongs to the field of chemical rectification. The rectification tower plate comprises a tower plate body which is of a spiral structure, a liquid inlet and a liquid outlet are arranged at the top and the bottom of the tower plate body respectively, the spiral diameter of the tower plate body gradually decreases from the middle to two ends, a retaining plate is arranged at each of two side edges of the tower plate body, and a fixed supporting frame enabling each spiral layer to be maintained at a corresponding position. The tower plate is of the spiral structure, gas-liquid phases in the rectification tower are enabled to contact stepwise for mass transfer and heat exchange, a centrifugal force generated by gravity forms a tangential force, mixing of radial fluid is enhanced, liquid turbulence degree and mixing of liquid-phase body are improved, and gas solvent in the liquid-phase body is distributed in the liquid-phase body; fluid path is widened, liquid film thickness is reduced, mass transfer resistance is reduced, and mass transfer efficiency can be improved.

Description

technical field [0001] The invention relates to the field of chemical distillation, in particular to a rectification tower tray and a rectification tower for improving heat and mass transfer performance. Background technique [0002] The chemical industry is the processing industry with the largest energy consumption, accounting for about 25% of the national industrial energy consumption, while the energy consumption of the separation process accounts for more than 40% of the chemical energy consumption. Separation of mixtures in different states such as liquid and gas, liquid and solid, gas and solid requires different separation methods, such as rectification, sedimentation, crystallization, extraction, adsorption, membrane separation, etc. Among them, the rectification process has the characteristics of large processing capacity, continuous operation, mature technology and high separation purity, and is widely used in the chemical industry, especially the air separation i...

AI Technical Summary

Problems solved by technology

However, the area of ​​a single plate in this design is still relatively large, and the difference in the distance traveled by the liquid in the inner and outer rings is relatively large, which is likely to cause a short circuit of the liquid, that is, the problem of uneven liquid distribution such as the inner ring instead of the outer ring.

[0007] The traditional tray mainly supports the weight of the tray and the liquid by supporting steel beams. The I-beam is the most widely used one. However, with the requirement of large-scale air separation, the diameter of the tower increases, and the diameter of the I-beam and The strength cannot meet the requirements

Images