Heilex Rings are commonly used in equipment such as packed towers, primarily involved in gas-liquid mass transfer, and are commonly found in processes such as desulfurization, decarbonization, and gas absorption. The basic process flow is as follows:

Packed tower construction: The tower body is an upright cylinder with a packing support plate at the bottom. Heilex rings are placed on the support plate in a random or stacked arrangement, and a packing pressure plate is installed above. A liquid distributor is installed at the top of the tower, and a liquid redistribution device (including a liquid collector and liquid redistributor) is strategically positioned within the tower based on the packing layer height.

Liquid spraying: Liquid is evenly sprayed onto the Heilex ring packing from the top of the tower through the liquid distributor, flowing down along the packing surface. When the packing layer is high, the liquid tends to flow toward the tower wall. In this case, the liquid redistributor collects and redistributes the liquid flowing down from the upper packing layer, ensuring uniform spraying onto the lower packing layer.

Gas transmission: Gas is introduced from the bottom of the tower, distributed by the gas distributor, and then continuously passes through the gaps between the Heilex ring packing layers in a countercurrent to the liquid. Gas-Liquid Mass Transfer: On the surface of Heilex Ring packing, the gas and liquid phases come into close contact for mass transfer. Solutes in the liquid phase are absorbed by the gas phase, or components in the gas phase are absorbed by the liquid phase, thereby achieving process objectives such as separation, purification, and absorption. For example, in a desulfurization tower, sulfur dioxide in the exhaust gas is absorbed by the absorbent liquid sprayed from the top of the tower.

Gas-Liquid Discharge: After mass transfer, the gas is discharged from the top of the tower, while the liquid flows out from the bottom. These can be further processed or recycled based on process requirements.

The process flow based on Heilex Ring varies depending on the application scenario. For example, in a hydrogen peroxide desulfurization process, sulfuric acid exhaust gas first enters a dynamic wave desulfurization tower for initial absorption, then enters a packed tower equipped with Heilex Ring packing. There, it comes into countercurrent contact with a dilute sulfuric acid solution containing hydrogen peroxide, oxidizing and absorbing the sulfur dioxide to form dilute sulfuric acid. After treatment, the exhaust gas meets emission standards, and the circulating liquid at the bottom of the tower can be used to generate dilute sulfuric acid, which is then sent to a storage tank. In the waste acid desorption process, dilute acid enters the desorption tower through the inlet through the tubular acid distribution device. Air enters under negative pressure and fully contacts the waste acid at the two layers of Heilex ring packing. The desorbed SO₂ gas is extracted and returned to the system for acid production. After desorption, the waste acid enters the inclined plate settler for further treatment.