Removal of sulfides
Thread Content
For the removal of sulfides, what is the most valuable process to use?
Could you please specify the components of sulfides? There are many types of sulfides, including inorganic sulfur such as H2S and organic sulfur such as CS2. The more established desulfurization technologies fall into two categories: dry desulfurization and wet desulfurization. In dry desulfurization, precision desulfurization is widely used, while in wet desulfurization, methods such as low-temperature methanol washing, PDS method, and tannin method are commonly employed. It is necessary to select the appropriate process technology based on the composition and content of sulfides.
Isn’t this spray absorption?
The Claus process can generally be used to recover sulfur, right?
Alkaline solution is NaOH; there are two methods: the single-alkali method and the double-alkali method. Currently, the single-alkali method is used as it is simpler, requires less investment, occupies less space, and its technology is mature, with a desulfurization efficiency of over 97%. The double-alkali process is somewhat similar to the limestone-gypsum process, but if not operated properly, it can easily cause blockages in the equipment, pipes, and nozzles.
For alkaline desulfurization, you need to continuously add industrial alkali to your circulation tank
Direct dry desulfurization requires low investment and is easy to operate
It mainly depends on the process used in the previous stage of production, as well as whether the sulfur compounds are inorganic or organic sulfur; the composition determines which process should be employed
It is recommended to first consider the amount of sulfides to be removed before deciding on the method.