Spray Tower Saturator

Spray Tower Saturator

Product Overview
The main material of the spray saturation tower is 316L stainless steel. This product is used in the sulfuric acid production section of a coking plant and is the main equipment for producing large-grain sulfuric acid. The spray saturation tower is a deammoniation device used in the purification process of coal gas and coal gasification gas in coking plants. It addresses the shortcomings of the previous purification process, where deammoniation, acid mist removal, and sulfuric acid crystallization were carried out separately in separate equipment, resulting in a large footprint and poor deammoniation and crystallization effects. This saturation tower consists of the upper shell, inner cylinder, acid addition pipe, coal gas inlet pipe, mother liquor inlet pipe, mother liquor chamber, mother liquor nozzle, coal gas outlet pipe, warm water pipe, overflow pipe, lower cylinder, mother liquor outlet pipe, crystallization slurry extraction pipe, discharge pipe, mother liquor reflux pipe, liquid level control pipe, and support. The upper shell and inner cylinder are combined to form two right and left spiral shell cavity structures. Its advantages include integration of deammoniation, acid mist removal, and sulfuric acid crystallization into one unit, compact structure, small footprint, and no secondary pollution caused by deammoniation and desulfurization.

Structural Features
The spray chamber consists of the main body, outer sleeve, and inner sleeve. The gas enters the main body and flows downward within the annular space between the main body and the outer sleeve. It then exits the spray chamber upwards and enters the space between the outer and inner sleeves along a tangential direction, spiraling downward into the inner sleeve before exiting from the top. The annular space between the outer and inner sleeves creates a whirlwind separation effect, removing liquid droplets carried by the gas and serving as an acid separator.
2. Install a mother liquor overflow pipe at the bottom of the spray chamber to control the liquid level at the lower part, prompting the gas to flow from the entrance to the exit within the circular chamber.
3. Divide the gas inlet and outlet into two curved distribution boxes, and equip the curved distribution boxes with multiple nozzles, with the nozzle direction facing the gas flow, creating a good gas-liquid contact surface.
4. The lower part of the spray chamber is a crystallization trough, connected to the trough via a downcomer pipe. The circulating mother liquor flows up from the bottom of the crystallization trough through the downcomer pipe, continuously generating ammonium sulfate crystal nuclei. These nuclei pass through the upward-moving suspension of ammonium sulfate mother liquor, promoting crystal growth and causing particle sizing. Smaller particles rise to the top, where they are collected at the upper outlet and fed into the circulating pump. Crystals are then removed from the bottom.
5. Equipped with a mother liquor spraying device at the gas outlet. Both the gas inlet and outlet are fitted with warm water spraying devices, allowing for a thorough cleaning of the spray chamber.