Natural gas contains a certain amount of mercury at home and abroad and mainly exists as elemental mercury. Mercury can cause corrosion to equipment, pipelines and instruments, cause poisoning of precious metal catalysts, and endanger the health of operators, so it needs to be removed efficiently. DKT has developed non-regenerated (metal sulfide adsorbent for mercury removal) and regenerated adsorbents for mercury removal and supporting mercury removal processes. The non-regenerated adsorbent for mercury removal has been successfully applied in PetroChina Tarim Oilfield, Xinjiang Oilfield and Jilin Oilfield; the regenerated adsorbent for mercury removal has been successfully applied in PetroChina Tarim Oilfield.

Technical features and advantages:

- Simple process with high removal rate of mercury;

- Compared with the commercially available sulfur-loaded activated carbon adsorbent for mercury removal, the metal sulfide adsorbent for mercury removal does not have the problem of sulfur dissolution;

- The metal sulfide adsorbent for mercury removal uses special alumina as the carrier to load uniformly dispersed metal sulfide, which is the active constituent. It has high mercury adsorption capacity and rate and can better adapt to gas sources containing free liquid;

- The metal sulfide adsorbent for mercury removal can effectively avoid the problem of capillary condensation of heavy hydrocarbons;

- The metal sulfide adsorbent can be used for mercury removal of dry/wet natural gas;

- The regenerated adsorbent for mercury removal has the characteristics of fast mercury adsorption rate, high dynamic mercury capacity and good regeneration performance.

Application:

- Deep removal of mercury from natural gas, oilfield associated gas, shale gas, etc.

- Deep removal of mercury from other mercury-containing gases.