Oxygen content detection system

A detection system and technology for oxygen content, which are applied in the fields of tobacco preparation, application, and tobacco, can solve the problems of inability to detect the vapor concentration of the process air flow, and inability to detect the high temperature process air flow.
CN102370239AInactive Publication Date: 2012-03-14CHINA TOBACCO FUJIAN IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA TOBACCO FUJIAN IND
Publication Date
2012-03-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an oxygen content detection system. The system mainly comprises a zirconia oxygen analyzer and a PID (proportion integration differentiation) control loop which is connected with the zirconia oxygen analyzer, wherein the zirconia oxygen analyzer is also connected with a pneumatic drying tower which is connected with a heat exchanger; the heat exchanger, a feed pipeline of the pneumatic drying tower and a discharge pipeline are connected to form a pneumatic motion loop; and the PID control loop consists of a steam injection amount control loop and a humidity exhaust blowing rate control loop. Compared with the prior art, the oxygen content detection system provided in the method can effectively reduce the tobacco shred burning risk under an aerobic condition, and reduce the oxygen reaction degree of the tobacco shreds in a high-temperature process airflow, so that the sense quality of the tobacco shreds is improved.
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Description

technical field

[0001] The invention relates to high-temperature airflow drying equipment in the silk-making process in the field of tobacco processing, and a technology for detecting and controlling the oxygen content in the process airflow including CO2 expansion equipment, HXD and the like. Background technique

[0002] In the field of tobacco processing, the high-temperature process airflow in the silk-making process is a mixture of steam and air, and the oxygen content in the air accounts for 20.95%. Theoretically, the oxygen content in the process airflow (%)=(1-steam concentration in the process airflow)*20.95%.

[0003] At present, the tobacco processing industry can use electronic component sensors to detect the steam concentration of the process airflow in the silk production process. The current technical force is still unable to detect the high-temperature process airflow with a temperature and humidity sensor, that is to say, when the gas temperature is higher th...

Claims

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