Overview

High-temperature, sulfur- and dust-laden flue gas enters from the bottom of the tower and flows upward through the spray purification zone and demister zone, where it fully contacts the alkaline atomized slurry flowing downwards. Through chemical reactions, pollutants such as sulfur dioxide, sulfur trioxide, fine dust, and acid mist aerosols are removed. The purified flue gas is discharged from the top of the tower, and the slurry falls back to the bottom for recycling. It is the core main equipment of the entire flue gas desulfurization project, directly determining the system's desulfurization efficiency, ultra-low emission stability, and flue gas treatment compliance. It is widely adaptable to various industrial kilns and boiler flue gas desulfurization conditions.

Features

The tower body adopts a vertical cylindrical integrated structure, with uniform and smooth internal airflow distribution and no dead-angle vortices. Sufficient flue gas residence time ensures adequate gas-liquid mixing reaction time, resulting in high desulfurization and purification efficiency. It can stably maintain ultra-low emission standards and is adaptable to switching between high and low load flue gas conditions.

The tower body is constructed of carbon steel lined with rubber, fiberglass, and alloy anti-corrosion materials. It is resistant to acid and alkali corrosion, slurry erosion, and high-temperature aging. It can withstand long-term operation under high-temperature humid flue gas, highly corrosive desulfurization slurry, and high-humidity condensation conditions. The tower body is not easily corroded, damaged, or leak-proof, ensuring a long service life.

The internal process structure is scientifically laid out, with layered spraying, reaction, demisting, and slurry storage areas. The functional zones are clearly defined, and the spraying atomization, neutralization reaction, and demisting/dehydration processes are continuous. It can simultaneously achieve multiple purification functions such as desulfurization, dust removal, acid mist removal, and white mist elimination, making it a multi-functional unit with strong comprehensive purification capabilities.

The system boasts low operating resistance and excellent ventilation performance, placing no wind pressure burden on the front-end dust removal and exhaust systems. It can perfectly coordinate with baghouse dust collectors and electrostatic precipitators for collaborative operation. The entire flue gas system offers stable airflow, low energy consumption, and minimal operating noise, resulting in significant energy savings.

The system exhibits excellent airtightness, with tight tower welds and reliable interface seals. During operation, there is no flue gas leakage or cold air backflow, effectively ensuring stable negative pressure and balanced reaction conditions within the tower. It can operate continuously for 24 hours without interruption, with an extremely low equipment failure rate and exceptional operational stability.

Suitable Applications

Widely applicable to wet flue gas desulfurization treatment of various industrial boilers and kilns, it is the core main equipment for flue gas desulfurization, acid mist removal, deep dust removal, and flue gas whitening elimination. Mainly used in flue gas treatment projects such as thermal power generation, heat supply, metallurgical sintering, cement kiln tail, chemical tail gas, waste incineration, and biomass combustion. It is compatible with various wet desulfurization processes such as limestone-gypsum method, dual-alkali method, and ammonia method. It can be integrated with front-end dust removal equipment to achieve comprehensive treatment of flue gas dust, sulfides, and acid mist.

Maintenance Design

The equipment comes standard with an integrated tower body, internal spray pipe network, support structure, inspection manhole, flue gas inlet and outlet, and sealing protection components. It is highly modular, easy to assemble on-site, and structurally stable. The tower diameter, height, spray levels, and anti-corrosion process can be customized according to the flue gas treatment volume, sulfur dioxide concentration, operating temperature, and site space. It supports customization for various operating conditions including normal pressure, high temperature, and high corrosion. It is compatible with new installations, upgrades, and replacements of old desulfurization and dust removal systems. Routine maintenance is simple, requiring only periodic checks of the tower's anti-corrosion coating, spray system, and demister to ensure their integrity, cleaning of scale and deposits inside the tower, and regular calibration of operating parameters. Long-term maintenance costs are controllable.

Note

The desulfurization tower is primarily responsible for flue gas desulfurization and purification, acid-base neutralization and demisting, and stable ultra-low emissions. It is the core equipment of a wet desulfurization system. Scale buildup inside the tower, spray blockage, damage to the anti-corrosion coating, and demister failure will directly lead to decreased desulfurization efficiency and excessive mist in the flue gas. Regular inspection, cleaning, and maintenance of the internal process structure are necessary to ensure the long-term stable, efficient, and compliant operation of the entire desulfurization system.