The desulfurization Roots blower is a type of blower specifically designed for desulfurization work. The following is a detailed introduction to it:
1、 Definition and purpose
The desulfurization Roots blower is mainly used in desulfurization systems. Its function is to suck the flue gas soaked in desulfurizer and absorb sulfur dioxide into the interior of the blower, generate negative pressure through the rotation of the impeller, and discharge the flue gas into the atmosphere, thereby purifying the air. It has been widely used in various fields such as industrial furnaces, power plants, and chemical plants.
2、 Structure and Working Principle
1. Structure: The desulfurization Roots blower is mainly composed of components such as impeller, casing, inlet and outlet flanges, and motor. Among them, the impeller is the rotating part of the Roots blower, which is divided into two types: two bladed and three bladed. The three bladed impeller has the advantages of small exhaust pulsation, low noise, and smooth operation, and has gradually replaced the two bladed Roots blower.
2. Working principle: The desulfurization Roots blower is a positive displacement fan. Its working principle is to use the relationship between gas volume and pressure to suck gas in from the low-pressure area, and after the rotation of the mechanical impeller, it is transported to the high-pressure area. Specifically, the axes of the two rotors (impellers) are parallel to each other and driven by the prime mover through a pair of synchronous gears to rotate in opposite directions at a constant speed. Under the drive of the synchronous gear, wind is transported from the inlet of the fan along the inner wall of the casing to the side where it is discharged.
3、 Performance parameters
The performance parameters of the desulfurization Roots blower mainly include air volume, air pressure, power, speed, and exhaust temperature. Among them, air volume and pressure are the main performance parameters of the desulfurization Roots blower, which directly affect its range of use and efficiency. Generally speaking, the air volume of the desulfurization Roots blower is between 500-20000m3/h, and the air pressure is between 300012000Pa. The specific parameter values need to be determined based on the specific dimensions, design requirements, and usage scenarios.
4、 Advantages and disadvantages
advantage:
1. High stability: The desulfurization Roots blower adopts the Roots gear principle, which has high stability and reliability.
2. Stable air flow: Within the design pressure range, when the resistance of the pipeline changes, the flow rate changes very little.
3. Small footprint: compact structure, easy to arrange and install.
4. Wide application range: It can work under lower pressure and has a wide range of applications.
5. Easy maintenance: There are gaps between rotors and between rotors and shells, and there is no friction phenomenon, making maintenance relatively simple.
Disadvantages:
1. Loud noise: The noise generated by the rotor during high-speed rotation.
2. High energy consumption: The high rotational speed results in relatively high energy consumption.
3. Larger volume: may take up more space.
Gas leakage: Gas leakage may occur when working under high pressure, affecting the gas compression effect.
5、 Application scenarios
The desulfurization Roots blower plays an important role in the desulfurization system, especially in the limestone gypsum desulfurization process. It is used as an oxidation blower to accelerate the oxidation rate and oxidize calcium sulfite into calcium sulfate. In addition, the desulfurization Roots blower can also be used in other scenarios that require gas transmission, such as aeration and oxygenation in wastewater treatment, pneumatic conveying, etc.
In summary, the desulfurization Roots blower is an important environmental protection equipment that plays a crucial role in the desulfurization system. When selecting and using a desulfurization Roots blower, it is necessary to comprehensively consider its performance parameters, advantages and disadvantages, as well as specific application scenarios and other factors.
