In the flue Air desulfurization process of steel, metallurgy, coking, petrochemical, cement, thermal power and other industries, desulfurization blowers play a vital role in providing enough air and oxygen to support the desulfurization reaction. Traditional desulphurization blowers, such as Roots fans, single-stage centrifugal blowers and multistage centrifugal blowers, have problems such as high energy consumption, low efficiency, high vibration and loud noise.
In contrast, magnetic levitation blower in the flue Air desulfurization process has obvious energy-saving effect, due to the use of advanced magnetic levitation technology, reduce mechanical wear and energy loss, higher transmission efficiency, improve the energy efficiency ratio, energy saving effect is better.
What is the flue Air desulfurization process
Under normal circumstances, the commonly used desulfurization process for flue air desulfurization is gypsum wet flue air desulfurization, the main principle is to use limestone and water mixed to make absorption liquid, through the absorption tower to reaction sulfur dioxide in the flue gas and absorption liquid calcium carbonate to produce calcium sulfite and other substances, and then through the desulfurization blower into the air for oxidation reaction, and finally form calcium sulfate, that is, gypsum. This process can not only effectively remove the sulfur dioxide in the exhaust air, prevent environmental pollution, but also produce a byproduct of economic value gypsum.
Through the gypsum wet flue air desulfurization process, not only can realize environmental protection and waste air treatment, but also can make full use of by-product gypsum, provide raw materials for other industries, realize the recycling of resources, and achieve a win-win situation of economic and environmental benefits.
So, what is the role of magnetic levitation blower in flue air desulfurization process?
First of all, we can first understand the structure of the maglev blower.
Main structure of maglev fan
The main components of magnetic suspension blower include centrifugal impeller, magnetic suspension bearing, permanent magnet synchronous motor and frequency converter.
Centrifugal impeller: The centrifugal impeller is the main rotating part of the maglev blower, which is responsible for drawing air or gas and generating pressure to promote the flow of air. It is worth noting that the design and material selection of the centrifugal impeller directly affect the performance and efficiency of the fan.
The impeller of magnetic suspension blower adopts the design of ternary flow back-bend, and the working range is wide. The impeller is made of high-strength aviation aluminum material with light weight and small moment of inertia. In order to ensure the service life of the impeller, we pass the CAE finite element analysis during the design, the incoming materials pass the 100% flaw detection, and the 115% over-speed test after the processing is completed to ensure the safety and reliability during the life cycle.
Magnetic Levitation Bearing:It is a key component of magnetic levitation blower, which supports and levitates the rotor through magnetic field force, replacing traditional mechanical bearings, reducing mechanical wear and friction, and improving the reliability and stability of the system.
The manufacturing plant needs to have excellent magnetic bearing design experts, and has accumulated many years of experience in the use of magnetic bearings and the dynamics of high-speed turmeric rotors, which can provide users with efficient and stable magnetic bearings. Independent research and development of active magnetic bearing control system needs to meet ISO14839 international magnetic bearing standards.
Permanent Magnet Synchronous Motor: it is the driving device of the magnetic suspension blower, which drives the centrifugal impeller by providing a rotating torque. Permanent magnet synchronous motor has the characteristics of high efficiency, high power density and precise speed control.
The Maglev Blower adopts high-speed permanent magnet synchronous motor, secondary development of software and hardware for each type of motor drive frequency converter, and optimization and matching of reactors or filters, motor and frequency converter efficiency is higher than 97%, ensuring stable operation of the motor at low temperature and high efficiency.
Frequency converter: Inverter is used to adjust the speed of the permanent magnet synchronous motor to achieve accurate control of the output air volume of the blower. The frequency converter can adjust the running speed of the fan according to the actual demand, improve the energy efficiency ratio and flexibility of the system.
The maglev blower adopts the frequency converter and intelligent control system, which can adjust the speed according to the working conditions, achieve the adjustment of pressure and flow. The blower has surge prediction and anti-surge function, which saves more power for users, better protects the blower, and can realize remote monitoring. Compared with the traditional blower, the efficiency is higher, the energy consumption is lower, the operation is more stable.
Operation principle of Maglev Blower
The magnetic suspension blower is directly connected by a high-speed permanent magnet synchronous motor and an efficient ternary flow impeller. After starting, the magnetic suspension blower uses a magnetic bearing controller to generate a magnetic field, which realizes the suspension and support of the rotating shaft. The high-speed permanent magnet synchronous motor provides an alternating current with adjustable frequency through a variable frequency power supply to generate an alternating magnetic field and drive the rotating shaft to rotate at a high speed. With the high speed rotation of the permanent magnet synchronous motor, the blower impeller also rotates. The impeller drives the air from the air inlet into the vortex casing, and under the action of guiding and pressurizing, the air is accelerated and pressurized to form a gas with a certain flow rate and pressure. After the guidance and pressurization of the vortex shell, the gas is pushed to the air outlet and finally pumped out, which realizes the acceleration and transportation function of the fan for the gas.
Application of Maglev Blower in flue air desulfurization process
Magnetic suspension blowers can provide the required air boost in the desulfurization equipment, ensuring that the air pressure and flow rate inside the desulfurization reactor meet the requirements of the desulfurization process. At the same time, the magnetic levitation blower adopts magnetic levitation technology and permanent magnet synchronous motor, which has stable operation characteristics and can run continuously for a long time without mechanical wear or vibration problems, ensuring the continuous and stable operation of the desulfurization system. Magnetic levitation blower adopts advanced permanent magnet synchronous motor and magnetic levitation technology, which has the characteristics of high efficiency and low energy consumption, and can effectively improve the operating efficiency of desulfurization system, reduce loss, energy saving and efficiency.
