Nitrogen production and adsorption tower with air volume more than 500 cubic meters and method for determining calibers of inlet and exhaust ports of nitrogen production and adsorption tower

Abstract

The invention discloses a nitrogen production and adsorption tower with an air volume more than 500 cubic meters and a method for determining the calibers of inlet and exhaust ports of the nitrogen production and adsorption tower. The problem is solved that the structure of a conventional axial nitrogen production and adsorption tower cannot meet the requirements of not damaging a supporting flower board structure in the tower during pressure equalizing and regenerating an adsorbent during exhaust simultaneously. The method is changed that a compressed air inlet of a conventional adsorption tower is also taken as an exhaust port, so that the compressed air inlet is separated from the exhaust port, the caliber of the exhaust port is enlarged, the method is kept that the compressed air inletis also taken as an air inlet / outlet port of a pressure equalizing pipeline, the size of the exhaust port is determined according to the experience value that the adsorbent is regenerated well duringexhaust, and the caliber of the compressed air inlet is determined in the premise that the flower board supporting structure in the tower is not damaged by the pressure equalizing airflow. The resolution effect of the adsorbent is better, and the nitrogen production index of equipment is more ideal.

Description

technical field [0001] The invention relates to a nitrogen production device, in particular to a nitrogen production axial adsorption tower with a gas production capacity of more than 500 cubic meters per hour and a method for determining the diameter of an air inlet and an exhaust port. Background technique [0002] Pressure swing adsorption nitrogen production is generally carried out in a pair of axial adsorption towers. The axial adsorption towers are filled with separation material adsorbents. The purified compressed air enters the adsorption towers, and the oxygen in the compressed air is absorbed by the adsorbents. Adsorption, the separated nitrogen is discharged from the gas production port at the top of the adsorption tower; the nitrogen production adsorption towers are generally set up in pairs, and the two adsorption towers alternately work together to increase the amount of nitrogen production; the specific structure is (see attached image 3 ): There is a nitroge...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for determining the diameter of an axial adsorption tower for nitrogen production of more than 500 cubic meters and its air inlet, which solves the problem that the structure of the traditional axial nitrogen production adsorption tower cannot simultaneously meet the pressure equalization without destroying the support in the tower Technical issues for good regeneration of the adsorbent during flower plate structure and exhaust

Images