Patent ID: 11927572
Assignee: CHENGDU COLIN ANALYSIS TECHNOLOGY CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 0:
1. A water removal method for gas concentration and sampling, wherein comprising the following steps of:
a: introducing a sample gas into a first cold trap tube filled with hydrophilic materials and being in a cooling state for water removal, and then introducing the sample gas after passing through the first cold trap tube into a concentration cold trap tube in a cooling state for concentration;
b: introducing a carrier gas into the first cold trap tube in a heating state;conveying organic substances and moisture both desorbed from the first cold trap tube by means of the carrier gas to a second cold trap tube filled with hydrophobic organic substance-adsorbing materials and being in a cooling state, for adsorbing the organic substances desorbed from the first cold trap tube;and carrying the moisture desorbed from the first cold trap tube out of the second cold trap tube by means of the carrier gas;
c: introducing additional carrier gas into the first cold trap tube and the second cold trap tube which are simultaneously in a heating state, and conveying the organic substances respectively desorbed from the first cold trap tube and the second cold trap tube by means of the carrier gas to the concentration cold trap tube in a cooling state for concentration.