Wet oxidative desulfurization is to use alkaline solution to absorb hydrogen sulfide in the gas phase to generate sulfide, and the sulfide is further oxidized in liquid phase by catalyst and oxidant to generate sulfur foam, and then the sulfur foam is separated and refined into sulfur products. This technology has been widely used in waste gas, coke oven gas, water gas, semi-water gas, refinery gas, natural gas, acid tail gas, biogas, etc. DKT, after more than ten years’ efforts, has achieved major technological innovations to the core part of this desulfurization technology, which include new high-efficiency catalyst, DKT-GXR reactor, and multifunctional (cooling, desulfurization and regeneration) desulfurization integrated equipment, as well as 8 patents for inventions and utility models. Compared with the conventional wet oxidative desulfurization, the new process has obvious advantages in overall investment, desulfurization (inorganic sulfur and organic sulfur) efficiency, equipment size and footprint, and has been successfully applied in many coal chemical desulfurization projects.

Technical features and advantages:

- New desulfurization process with a new generation of wet oxidation method and DKT-6 active catalyst;

- Adopting the closed cycle process of desulfurization by absorption at normal temperature and pressure (or pressurization) and atmospheric oxidation regeneration with injection of self-priming air, without heating regeneration to obtain by-product sulfur. The sulfur recovery process of producing sulfur by continuous sulfur melting is low in operating cost and comprehensive energy consumption;

- The special composite DKT-6 active catalyst is used in the process, which can not only remove hydrogen sulfide, but also has a good removal effect on organic sulfur and cyanide. It has a high sulfur capacity, which is more than 2 times that of similar desulfurizers;

- This technology, combined with the special active desulfurizer, can also greatly reduce the generation of desulfurization by-products, saving the treatment investment and effectively reducing the production costs;

- Unique design of the process, absorber and regenerator, and the special composite DKT-6 active catalyst has self-cleaning function, which can effectively prevent blockage in the vessel.

Application:

- Sulfur removal from waste gas, coke oven gas, water gas, semi-water gas, synthetic gas, refinery gas, natural gas, acid tail gas, biogas, etc.

- Sulfur removal from other sulfur-containing gases.