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.

Inactive Publication Date: 2012-03-14
CHINA TOBACCO FUJIAN IND
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Problems solved by technology

[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 than 180 °C, it is impossible to use the temperature and humidity sensor to detect the steam concentration of the process air flow online

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Embodiment Construction

[0013] Now illustrate the present invention in conjunction with accompanying drawing and embodiment.

[0014] With the continuous development of tobacco technology, the requirements for tobacco product processing technology are getting higher and higher, and the result inspection of tobacco product in process is gradually replaced by the control of process parameters of tobacco product in process. In order to achieve the stability of the inherent quality of cigarette products, not only the accuracy of the formula must be ensured on the raw materials, but also the stability of the technological parameters in the processing process must be ensured. Only in this way can the stability of the final product quality be guaranteed. By discussing the airflow theory of the high-temperature air-flow drying process of shredded silk, which is a new silk-making technology with online full-recipe expansion, the principle of high-temperature air-flow drying and the actual quantitative detectio...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B3/04A24B3/00
Inventor 洪伟龄李跃锋李晓刚张炜刘泽春陈河祥江家森李华杰常明斌罗登炎卢新万
Owner CHINA TOBACCO FUJIAN IND
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