Constant dew point non-thermal desiccant dehumidifier based on twin tower adsorption

By integrating a multi-sensor information acquisition and learning model into a dual-tower adsorption dryer, the switching time and regeneration gas flow rate are dynamically adjusted, solving the problems of low efficiency and unstable drying effect of traditional dual-tower adsorption dryers under changing operating conditions, and realizing the stability of gas outlet dew point and efficient use of adsorbent.

CN121243953BActive Publication Date: 2026-07-21HANGZHOU CHENRUI AIR SEPARATION EQUIP MFG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HANGZHOU CHENRUI AIR SEPARATION EQUIP MFG
Filing Date
2025-09-26
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Traditional dual-tower adsorption dryers are inefficient and have unstable drying effects when operating conditions change, resulting in unqualified outlet air dew point and waste of regenerated gas.

Method used

The constant dew point heatless desiccant dryer with dual-tower adsorption integrates multi-sensor information acquisition and learning models to dynamically adjust the dual-tower switching time and regeneration gas flow rate. Combined with actual working condition feedback, it realizes intelligent control and automatic switching of the filtration mechanism.

Benefits of technology

This ensures a highly stable gas outlet dew point, avoids frequent adsorbent switching and over-regeneration, extends service life, reduces regeneration gas consumption, and improves the reliability of downstream processes.

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Abstract

The application discloses a constant dew point non-thermal drying machine based on double-tower adsorption, belongs to the technical field of drying machines, and integrates multiple sensing information acquisition and learning model prediction mechanisms, combines actual gas load and dew point demand feedback of double adsorption towers, realizes dynamic adjustment of double-tower switching time and dynamic adjustment of regeneration gas flow according to actual working conditions, avoids the limitations of traditional fixed mode switching and fixed flow regeneration, upgrades the double-tower adsorption drying machine into an intelligent equipment capable of "perception-analysis-decision-execution", guarantees the high constancy of the dew point of the gas outlet, avoids unnecessary frequent switching and excessive regeneration of the adsorbent, and additionally arranges front and rear double filtering mechanisms in parallel, so that the intelligent switching of the double filtering mechanisms can be switched according to the change of the gas flow, namely, the double filtering mechanisms are arranged in parallel and switched by an intelligent valve, and the automatic switching of the filtering mechanisms is realized by relying on pressure difference sensing and control logic.
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