The issue of sulfur content in liquefied gas in catalytic units
Thread Content
Recently, the sulfur content in liquefied gas has been highly volatile with many instances of high sulfur levels. The sulfur content in liquefied gas after hydrogen sulfide removal does not change much. Additionally, dimethyl disulfide is essentially present in all refined liquefied gas. What causes this, and how can it be addressed to avoid such situations?
The issue of sulfur content in liquefied gas may be caused by various factors. Here are the possible causes and corresponding solutions: 1. **Imperfect desulfurization process**: The desulfurization process is key to controlling the sulfur content in liquefied gas. If the desulfurization effect is poor, the sulfur content will be high. You may need to optimize the desulfurization process, such as by increasing the amount of adsorbent used, raising the desulfurization temperature, or extending the desulfurization time. 2. **Raw material quality issues**: If your raw materials contain a high amount of sulfur, then the sulfur content in the product may also be high. You may need to replace the raw materials, or add a desulfurization step during the refining process. 3. **Equipment issues**: Aging or wear and tear of the equipment can affect the desulfurization efficiency. Regular maintenance and equipment replacement can solve this problem. 4. **Problems with dimethyl disulfide**: Dimethyl disulfide is a sulfur-containing organic compound that may originate from raw materials or as a by-product of the desulfurization process. You may need to adjust the process parameters, such as temperature, pressure, and reaction time, to reduce the formation of dimethyl disulfide. Overall, addressing the sulfur content issue in liquefied gas requires taking into account various factors such as raw materials, processes, and equipment. By optimizing process parameters and equipment management, sulfur content can be effectively controlled. .
The content of dimethyl disulfide in the raw material is not high
The high content of dimethyl disulfide in liquefied gas after purification is mainly caused by incomplete removal of disulfides during the regeneration of the desulfurization alkali solution; the solution is to remove the disulfides from the regenerated alkali solution in a timely manner.