How does the Claus process improve conversion rate?

Is it because the temperature of the liquid sulfur is not high enough, causing condensation? Generally, with two-stage Claus conversion, the conversion rate is very high

Non-technical personnel, from an instrumentation perspective. Improving the self-control effect should be helpful. In our case, blockages often occur due to insulation and heating issues; when the steam temperature is 150 degrees Celsius, blockages are less likely to happen

How to avoid blockages in the liquid sulfur pipeline: 1. Before starting up a new facility, it is necessary to purge the system and pipelines to remove all impurities. 2. After the new catalyst is installed, soot blowing must be carried out. 3. Ensure the construction quality of the jacketed pipeline to prevent leaks inside and outside the pipeline. 4. The heating steam for the jacket pipeline must ensure proper drainage. 5. The liquid sulfur pipeline should be insulated with stable 0.35 MPa steam to avoid pressure fluctuations; at the same time, it is necessary to ensure that the traps are unobstructed in order to maintain effective insulation. 6. The sulfur sealing design is reasonable, providing good heat tracing effects; in addition, there is a filter screen at the liquid sulfur inlet. By following the above points, the liquid sulfur pipeline generally will not get clogged.

Regarding how to improve the conversion rate: 1. It is necessary to use catalysts with high activity and high hydrolytic activity for organic sulfur. 2. If possible, efforts should be made to maintain stability in the acidic gas fed in. 3. The most important thing is to carry out the operations with precision. ----Wait

The low conversion rate is mainly constrained by chemical equilibrium

Please, an expert, explain the intricacies behind this!

The sulfur sealing design is reasonable, providing good heat tracing performance; in addition, there is a filter screen at the liquid sulfur inlet.

The key to improving the conversion rate is maintaining stable flow rates and pressures of acidic gases entering the system, ensuring an appropriate temperature in the reactor bed, properly controlling the air supply, installing online detectors, and employing proportional control and feedforward control systems, as well as sampling and analyzing the exhaust gases. Ensure that sulfur does not cause blockages; it is necessary to guarantee the absolute reliability of the 4-kilogram steam heating system for the liquid sulfur pipelines, outlets, and sulfur seals. A wire mesh demister should be installed before exhaust gas treatment, and samples of the components in the acidic gas should be taken for analysis on a regular basis. The color of the liquid sulfur should also be monitored regularly, and if any abnormalities are detected, the acidic gas should be promptly removed from the system.

The most fundamental principle of chemical equilibrium in chemical reaction engineering is that when a reaction reaches equilibrium, the reaction rates of the forward and reverse reactions are equal; at this point, the composition of the reaction gases no longer changes. A sulfur condenser is typically used to separate the generated sulfur, thereby reducing the partial pressure of sulfur products in the process gas, disrupting the reaction equilibrium and driving the reaction forward to increase the sulfur conversion rate.

Thank you, I know this principle! The establishment and disruption of equilibrium are merely the most fundamental principles of chemical engineering. However, in actual production processes, it is necessary to know how to determine whether equilibrium has been reached, especially since the composition of the raw materials can change at any time! Basic theory provides knowledge for practical operations, but in actual practice, knowing how to make judgments during those operations is a real skill