Transformation purification process rearrangement problem
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Organic sulfur hydrogenation is carried out prior to the conversion; a desulfurizing agent is added to the hot steam atmosphere after the conversion to remove most of the sulfur, and the sulfide-containing aqueous solution is used for the catalytic recovery of sulfur paste. Decarburization involves liquefying and separating carbon dioxide using the normal cooling method after heat recovery in the shift process, and the separated carbon dioxide is used to recover cooling energy through expansion. It is used to replace future purification; please point out any issues and offer as many suggestions as possible.
1. The typical operating temperature for organic sulfur hydrogenation is between 300 and 400 degrees. Organic sulfur hydrogenation is carried out before conversion; where does the heat source for the inlet temperature of the hydrogenation reactor come from? 2. The shift catalyst itself possesses strong capabilities for the hydrogenation and hydrolysis of organic sulfur. If the level of organic sulfur in the water gas is not very high, or if desulfurization and decarburization processes such as low-temperature methanol washing are used in subsequent steps, then the shift process alone is generally sufficient to remove the organic sulfur; even if some remains, low-temperature methanol washing can fully meet the requirements of the subsequent processes. 3. In the shift process used for gas production with a fixed-bed reactor, since post-process decarburization is carried out using pressure swing adsorption or carbon disulfide liquid decarburization, among other methods, in order to ensure the conversion of organic sulfur, a medium-temperature hydrolysis step is typically added after the shift reactor in this process, thereby ensuring the conversion of organic sulfur.