Sulfuric Acid Production Unit Using Activated Coke Adsorption and Desorption of Sintering and Pelletizing Flue Gas from Steel Plants

Sulfuric Acid Production Unit Using Activated Coke Adsorption and Desorption of Sintering and Pelletizing Flue Gas from Steel Plants

Typical users:
Ningbo Iron & Steel Co., Ltd.
Shougang Group Co., Ltd. Mining Company
Hebei Taihang Iron and Steel Group Co., Ltd.
Anhui Shoukuang Dachang Metal Materials Co., Ltd.
Boiling Furnace

Boiling Furnace

The fluidized-bed furnace consists of a steel shell lined with insulating bricks and refractory bricks. Structurally, the furnace is divided into two sections—the combustion chamber and the air chamber—by a gas-distribution plate. The gas-distribution plate is equipped with laterally oriented, regularly arranged vented nozzles, and above the plate lies a furnace hearth cast with refractory concrete. Following the construction of China’s first fluidized-bed furnace in the 1950s, this technology for producing sulfur dioxide gas via fluidized-bed roasting has since been adopted by all domestic sulfuric-acid plants that produce acid from ore as well as by some smelting-flue-gas-based sulfuric-acid plants.
Cyclone dust collector

Cyclone dust collector

Cyclone dust collectors are common gas–solid separation devices. When dust-laden gas enters the cyclone through the inlet at an appropriate velocity, it begins to rotate in the annular space between the outlet and the cylindrical body before being discharged from the device via the outlet. Within the unit, centrifugal force is utilized to separate the gas from the solid particles. Cyclone dust collectors are characterized by low capital investment, simple construction, easy maintenance, and relatively high dust-collection efficiency, making them widely used in the sulfuric acid industry.
Cooling Drum Slag Removal Machine

Cooling Drum Slag Removal Machine

The cooling drum slag remover is a specialized piece of equipment that uses a rotating drum to cool and convey high-temperature powders, with a helical screw blade installed inside the drum. It is primarily used for the conveyance and cooling of slag and dust from acid-production facilities processing pyrite ore, zinc concentrate, and other materials.

The rotary drum slag remover for the cooling drum is mounted on supporting idler rollers, with a water-spraying device installed at the top of the drum. During rotation, high-temperature slag and dust enter through the feed inlet and are conveyed by the internal helical blades toward the discharge outlet. As they are transported, water sprayed onto the outer wall of the drum removes heat, thereby reducing the temperature of the slag and dust. Typically, after being gradually cooled to about 230°C, the hot slag and dust proceed to the humidifier. Inside the humidifier, spray pipes deliver water to moisten the internal slag and further lower its temperature.

Currently, our company’s cooling drum slag-removal machines have achieved “standardized specifications and standardized key components.” During operation, the slag and dust discharged from the equipment are so dry that they neither generate airborne dust nor form cohesive clumps, and they do not feel hot to the touch, thereby significantly improving the working environment. In addition, our equipment is manufactured using high-quality materials and undergoes rigorous machining, ensuring stable operation and exceptional durability.

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