The performance of ventilation system in drying section has seriously affected the operation efficiency, production energy consumption and product quality of paper machine. Due to the increasing speed of paper machine, the air distribution in the air hood of drying department is becoming more and more complicated, and the treatment of inflow air is becoming more and more difficult. As the key equipment of air distribution and air treatment, closed air hood is of high value in the ventilation system of paper machine and has been in a decisive position in the operation of paper machine.
The main function of the gas hood is to capture and remove water vapor from the drying section.
Yankee hood and hood exhaust fan are the main equipment to accomplish this task. The drying section of a high-yield paper machine will evaporate tons of water vapor every minute. The gas hood and air extraction system can concentrate the water vapor in the drying department and then discharge it from the factory building after heat recovery. Ideal drying capacity and paper machine output.
Provide a controllable drying environment and optimize the ventilation performance of the bag area
The coordinated operation of the ventilation system and the hood in the bag area can control the drying environment and control the humidity in the bag area to be very low and uniform. Improve the drying capacity of paper machine and reduce the fluctuation of banner moisture distribution.
Adjust the air distribution inside the air hood to stabilize the paper web.
The stable operation of the paper web in the drying section is an important condition for high efficiency and high speed of the paper machine. Only by coordinating the operation of the paper stabilizer and the air hood and properly handling the air flow in the air hood can the paper run stably.
Improve thermal efficiency
The gas hood and ventilation system can recover heat to the maximum extent and have high-quality "recovered energy". The gas hood and the gas hood exhaust fan take most of the heat after steam drying the paper out of the gas hood, and enter the heat recovery system for heat recovery and reuse.
From this, we can see that the closed gas hood still plays a great role in the ventilation system of the drying department, which can not only help its equipment run better, but also save energy and reduce a lot of unnecessary expenses for enterprises.
Shandong Fengxin Technology Develop ment Co., Ltd. is a company specializing in the development, research and production of paper ventilation, drying, energy saving technology and equipment, and has achieved good results in the field of paper ventilation, drying and energy saving for many years. Fengxin closed air hood system design mainly includes the drying part closed air hood, air hood in various functions of the blower, waste heat recovery device, paper machine mesh moisture, high-speed Yanke hot air hood, all kinds of coating drying boxes, workshop ventilation system and supporting equipment.