Solution regenerating system with embedded gas-liquid separation function

Abstract

The invention provides a solution regenerating system with an embedded gas-liquid separation function. The solution regenerating system comprises a regenerating tower communicated with an absorbing tower, a re-boiler communicated with the lower part of one side of the regenerating tower, and a gas-liquid separating device embedded in the lower part of the regenerating tower, wherein the bottom part of the gas-liquid separating device is connected with an inlet which is used for enabling a hot medium in the re-boiler to enter the regenerating tower. The system can be used for the fields of a power station boiler or chemical engineering, has the characteristics that the gas-liquid separation of the solution subjected to reboiling is realized at the bottom of the tower, and therefore, the ratio of the gas rising along the tower is increased, the liquid drop uploading is reduced, the heat and mass transfer balance of the gas phase and the liquid phase in the tower is kept, and the cooling load in subsequent regenerated gas cooling equipment is reduced.

Description

technical field [0001] The invention relates to the technical field of single gas chemical absorption and regeneration of multi-gas mixture, in particular to a solution regeneration system with built-in gas-liquid separation. Background technique [0002] Gas absorption is the process of transferring one (or more) components in a gas mixture from the gas phase to the liquid phase, and the corresponding regeneration (or distillation) is to separate the components of the liquid mixture based on the difference in boiling point process, and also includes the chemical reaction process. Among them, in chemical production, the energy consumption of distillation is large. After the energy crisis occurred in the 1970s, distillation energy-saving technology came into being, and new processes, towers, equipment, etc. developed rapidly, and were widely used in large-scale towers at home and abroad, resulting in huge economic and social benefits. [0003] In recent years, the pressure ...

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Problems solved by technology

[0004] Engineering applications and experimental studies have shown that most of the energy consumed in the partial distillation regeneration process is consumed in the latent heat of evaporation of water in the solution, and due to the pressure gradient formed in the tower, some liquid droplets will rise from the bottom of the tower to the top of the tower with the regeneration gas Even escape out of the tower, this phenomenon not only destroys the gas-liquid mass transfer balance in the upper and middle parts of the tower, increases the probability of liquid flooding, increases the heat consumption in the tower, but also increases the cooling load of the subsequent regeneration gas cooling, and finally increases the system overall energy consumption

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