| 摘要 |
The invention relates to a method for controlling the CO2/O2 concentration of a gas mixture, for example, in a cooling cell for horticultural products, by alternately carrying out an adsorption process, in which CO2 is absorbed from the gas mixture onto an adsorption material, and a regeneration process in which adsorbed CO2 is removed from the adsorption material with the aid of air. In so doing, the gas mixture which has been in contact with the adsorption material is partially stored at the beginning of the regeneration process, and after regeneration is complete the adsorption material is purged with the stored gas mixture and the gas which is released during purging is discharged to atmosphere. In addition, after purging the adsorption material is post- purged with N2 or air having a very low oxygen concentration, to remove O2 from the adsorption material. The invention also relates to an apparatus for implementing said method, which comprises, an adsorption device which can be connected into a closed circuit with the space, a purge gas reservoir which can be connected in series with the adsorption means, and an N2 generation apparatus which is connected in parallel with the purge gas reservoir and can be connected in series with the adsorption device.
|
