Flue Gas Desulfurization (FGD) technology is a vital environmental protection measure in today's industrial production, especially widely used in power plants and heavy industries. Its main purpose is to remove sulfur dioxide (SO₂) from flue gas through chemical reactions to reduce air pollution and protect the environment. As a professional manufacturer of industrial mixer solutions, Keheng has rich experience in the field of flue gas desulfurization and is committed to helping optimize the desulfurization process, improve desulfurization efficiency, and ensure the stable operation of the system through efficient mixers.
The role of keheng mixers in the FGD industry:
The core step of flue gas desulfurization is to react sulfur dioxide in flue gas with desulfurizers (such as limestone or gypsum slurry) to form non-volatile substances. This reaction is usually carried out in an absorption tower or reaction tower containing liquid. The mixer plays a vital role in this process, ensuring that the reactants are fully mixed to achieve completeness and efficiency of the reaction. Specifically, the mixer plays an important role in the following procedures:
In the flue gas desulfurization system, the desulfurizer is usually a slurry formed by mixing limestone or gypsum with water. The mixer is used to fully mix limestone powder or gypsum with water to ensure the uniformity of the slurry, avoid incomplete dissolution of the desulfurizer, and improve its reaction efficiency.
The core process of flue gas desulfurization is the reaction of sulfur dioxide (SO₂) in the flue gas with the desulfurizer to produce harmless substances (such as gypsum). The mixer plays a mixing role in the reaction tower, which can effectively increase the contact area between gas and liquid, promote the absorption and reaction of SO₂, and thus improve the desulfurization efficiency.
During the desulfurization process, solid particles (such as limestone particles) in the slurry may settle at the bottom of the reaction tower, resulting in incomplete reaction or equipment blockage. The mixer can maintain the fluidity of the slurry by constantly stirring the slurry, preventing solid particles from settling, and ensuring the fluidity of the slurry and the continuity of the reaction.
To ensure reaction efficiency, in some desulfurization systems, the slurry may need to circulate between multiple reaction stages or equipment. Funnel-shaped or uneven slurry circulation will lead to low reaction efficiency. The mixer helps the slurry to circulate and mix evenly in this process to ensure that the reaction at each stage can proceed efficiently, thereby improving the overall desulfurization effect.
In some complex flue gas desulfurization processes, the desulfurization slurry may require a higher concentration of desulfurizer. The mixer can effectively handle high-concentration slurry through precise stirring, ensure the uniformity of slurry concentration, and ensure the stable desulfurization process.
KEHENG's mixers are carefully designed and are specifically suitable for extreme working conditions in flue gas desulfurization systems. The following are several key advantages of Keheng's mixers in the field of flue gas desulfurization.
Advantages
1.Highly Corrosion-resistant Materials
During the flue gas desulfurization process, the desulfurizer and reaction products are highly corrosive. Keheng's mixers use highly corrosion-resistant materials (such as stainless steel, alloys, etc.) to ensure that the equipment can operate stably and for a long time in harsh working environments and reduce maintenance costs.
2.Unique Mixing Blades
We use specially designed high-efficiency mixing blades to ensure efficient mixing during the desulfurization process. The special fluid dynamics design increases the contact area between the slurry and the flue gas, thereby improving the desulfurization efficiency.
3.Mechanical seal
Our flue gas desulfurization side-entry mixer is equipped with a dedicated mechanical seal. This cartridge seal is specially designed to handle highly abrasive and corrosive media and can provide excellent sealing performance in harsh working environments. Its unique design gives it a long service life, effectively reducing replacement frequency and maintenance costs.
4.Emergency Locking Device
By using the emergency locking device, the mechanical seal can be repaired or replaced without emptying the absorption tower, which greatly improves the convenience of maintenance.
5.Customized Solutions
According to the needs of different flue gas desulfurization systems, Keheng provides customized mixer solutions. Whether it is an absorption tower, a reaction tower, or a slurry pool, Keheng can design a suitable mixer according to the specific size, working environment and fluid characteristics to optimize the desulfurization effect.
6.Prevent Scaling & Deposition
Keheng's mixer has a unique anti-deposition design, which effectively avoids the accumulation of solid particles and sediments in the slurry and ensures long-term stable reaction conditions.
Classification of mixers by drive mode
Gear-driven Mixers
Gear-driven mixers transmit power efficiently through a gear system and are suitable for applications that require high torque output and stability. It can provide large torque and is suitable for mixing high-viscosity fluids, such as heavy oil and asphalt. This system has a compact structure and good stability, and is suitable for long-term, high-load operation, especially in oil refining and chemical reaction processes.
Belt-driven mixers transmit power through a belt and roller system and are suitable for medium and low load mixing needs. It provides flexible speed adjustment, low noise and shock absorption, and is suitable for occasions that require less power and lower cost. Due to its relatively low transmission efficiency, belt drive is more suitable for mixing low-viscosity liquids and is suitable for projects with limited budgets and high requirements for noise control.
