Control method and device of tobacco pneumatic drying air-heating furnace

Abstract

The invention discloses a control method and device of a tobacco pneumatic drying air-heating furnace. A CO detector (5) and an O2 detector (6) are installed on a flue gas discharging pipe (7) of the pneumatic drying air-heating furnace (4), an air distribution air door (1) is installed on an air distribution pipeline (8), and a control system is electrically connected with the CO detector (5), the O2 detector (6) and the air distribution air door (1) to establish interlocking control relation. The CO content and the O2 content in flue gas after combustion are adjusted by changing the opening degree of the air distribution air door by means of the control method. By means of the control method and device, combustion control of the tobacco pneumatic drying air-heating furnace can be achieved, accordingly emission of the combustion flue gas is effectively controlled, and energy consumption of the air-heating furnace is reduced. The device is simple in structure and reliable in operation.

Description

technical field [0001] The invention relates to a method for controlling a tobacco airflow drying hot air stove, and also relates to a device for realizing the method. Background technique [0002] Tobacco drying is an indispensable part of tobacco processing. In particular, the airflow drying system of tobacco generally uses a hot blast stove to heat the process air flow, which requires a large amount of energy consumption. The hot blast stove generally uses a burner to burn fuel. When the burner is put into operation and only adjusts the air distribution ratio of several power points, and the required power in the production process is always changing frequently, the combustion status cannot be determined and cannot be adjusted automatically, thus Environmental protection that affects system energy consumption and emissions. [0003] The factory generally detects the flue gas index of the hot blast stove after the hot blast stove has been running for a certain period, and...

AI Technical Summary

Problems solved by technology

[0002] Tobacco drying is an indispensable part of tobacco processing. In particular, the airflow drying system of tobacco generally uses a hot blast stove to heat the process air flow, which requires a large amount of energy consumption. The hot blast stove generally uses a burner to burn fuel. When the burner is put into operation and only adjusts the air distribution ratio of several power points, and the required power in the production process is always changing frequently, the combustion status cannot be determined and cannot be adjusted automatically, thus Environmental protection that affects system energy consumption and emissions

[0003] The factory generally detects the flue gas index of the hot blast stove after the hot blast stove has been running for a certain period, and then mechanically adjusts the air / fuel ratio of the burner according to the flue gas index. The adjustment process takes a long time and the technology is complicated

Images