FGD Roots Blower

Short Description:

FGD Roots Blower in desulfurization processes is to provide sufficient oxidizing air to the absorber slurry pool, forcibly oxidizing calcium sulfite (CaSO₃) into stable gypsum (CaSO₄·2H₂O), thereby ensuring desulfurization efficiency and by-product quality.

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I. Key Functions Analysis

Completing Chemical Conversion: In wet desulfurization, sulfur dioxide (SO₂) in the flue gas is absorbed by limestone slurry to form unstable calcium sulfite. If not oxidized in time, it will not only reduce desulfurization efficiency but also easily cause scaling inside the equipment. The oxidation Roots blower blows in air, providing oxygen (O₂), which promotes the complete oxidation of calcium sulfite into calcium sulfate, ultimately crystallizing into commercial-grade gypsum.

Improving System Operational Stability: FGD Roots blower has constant flow characteristics, maintaining a stable airflow output even with system pressure fluctuations, ensuring continuous and efficient oxidation reactions. This stability is crucial for maintaining desulfurization efficiency.

Optimizing By-product Quality: Sufficient oxidation can reduce the calcium sulfite content in gypsum to below 3%, preventing excessive impurities from affecting its resource utilization in building materials and other fields.

FGD Roots Blower application — FGD Roots Blower

II. Equipment Selection and Process Adaptation Advantages:
Compact Structure and Easy Maintenance: Adopting an oil-free design avoids lubricating oil contamination of the slurry. Its simple structure and reliable operation make it suitable for long-term continuous operation.

Strong Corrosion Resistance: For the high humidity and corrosive characteristics of the desulfurization environment, the blower is often made of special materials or undergoes anti-corrosion treatment to extend its service life.

Supports Variable Frequency Control: Equipped with a variable frequency control system, the air volume can be dynamically adjusted according to the actual load, achieving energy-saving operation while ensuring oxidation effect.

While How does FGD Roots blower play its role in Flue Gas Desulfurization (FGD) system? Now the following details are coming.

Specification of Shangu FGD Roots Blower

1.All models of FGD roots blower

MTRF-245 MTRF-250 MTRF-290 MTRF-295 MTRF-300 MTRF-350 MTRF-395 MTRF-400 MTRF-450

2.Size of Discharge Bore

245(9.85″) 、250(9.85″)、290(11.8″)、295(11.8″)、300(11.8″)、350(13.8″)、395（15.7″） 400(15.7″) 、450(18″)

Or in customer’s indication range

3.Differential pressure scope

9.8—98kPa

4.Air capacity scope

71.6—267 m³/min

5.Power of the motor

30—355kW

Necessary standard accessories(common type)

Discharge Connection Pipe;entrance&exiting silencer(with air filter);flexible connector; check valve; foundation bolt; deflating valve;pressure gauge; base;gear oil

Necessary standard accessories(nickel plating type)

entrance&exiting metal bellows; foundation bolt; base