Wet complexation iron redox hydrogen sulfide removal technology

The old L-CAT process used by the Americans was once widely applied in oil refining; it is also used quite often nowadays for the advanced treatment of desulfurization exhaust gases in the coal chemical industry. The results are good, but the quality of the sulfur paste produced is average

Oh, does sulfur ointment have a high water content? Or are there more impurities? Are you a professional in this field?

Hello, the wet-process complexation iron oxidation-reduction method for the removal of hydrogen sulfide is a highly efficient technique for eliminating this gas at present. This technology is well-developed, offers broad market prospects, and can be applied in various fields – including sulfur-containing natural gas, hydrocarbon processing gases containing hydrogen sulfide, exhaust gases from pharmaceutical factories, and coal chemical processes – handling hydrogen sulfide concentrations ranging from 0% to 100%. This process can be applied to treat such substances, with a very high removal rate of hydrogen sulfide – an immediate removal rate of 99.99% – and the hydrogen sulfide content in the purified gas after treatment is below 5 ppm.

I am extremely grateful to this expert. Are you specialized in hydrogen sulfide removal? Could you leave a contact way to communicate? Thank you!

The wet complexation iron redox technology for the removal of hydrogen sulfide was developed in the 1970s. To date, more than 200 such units for sulfur recovery using wet complexation iron have been installed both domestically and internationally. This technology is now quite mature, and its main application areas include natural gas, shale gas, coalbed methane, coal chemical industry, biogas, refinery exhaust gases, fine chemical industry exhaust gases, and adhesive production exhaust gases. The core of the wet-process complexation iron redox hydrogen sulfide removal technology is the desulfurization catalyst, and the quality of this catalyst directly affects the efficiency of hydrogen sulfide removal. The XR-SR series of desulfurization catalysts developed in China by Yantai Xinrui Environmental Protection Technology Co., Ltd. achieve a hydrogen sulfide removal efficiency of over 99.99%, with the hydrogen sulfide content in the purified natural gas being ≤1 ppm; thus, their purification performance exceeds the standards for Class 1 natural gas as specified in the **Natural Gas** regulations. The Pengzhou Yashen-1 well project in the marine gas field operated by Sinopec Southwest Bureau is currently the largest single-well desulfurization facility in China. It was put into operation in 2017, with a daily processing capacity of 300,000 Nm3 of natural gas. The hydrogen sulfide content in this gas was 53,000 ppm; after purification, the hydrogen sulfide content in the natural gas is less than 1 ppm. The project was provided with a process package, supergravity desulfurization equipment, a range of desulfurization chemicals, as well as post-project technical services by an environmental protection company in Yantai.

I had technical discussions with them when choosing the project processes

To be more specific, in which aspects is there deception?

Chelated iron technology is more suitable for treating acidic gases with low hydrogen sulfide content. In particular, sulfur emissions and coal chemical industry emissions, etc. The resulting elemental sulfur is in the form of fine powder and needs to be remelted and shaped. For acidic gases with high hydrogen sulfide content, the Claus process remains more economical and efficient.