The impact of high gas concentration on the device
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This post was last edited by yusmile on 2018-1-23 at 10:50. Many of the equipment and process parameters in sulfur-based acid production plants are designed based on gas concentration and output, but in actual operation, it is inevitable that full capacity cannot be achieved due to external factors. Does the gas concentration also need to be adjusted when reducing the load? Reducing the gas concentration means a decrease in the system’s heat output; as a result, the heat available in the latter sections of the converter may not meet the design requirements, which could affect the conversion rate. In other words, whether the gas concentration should be set according to the design value and not altered – I hope everyone can discuss the impacts of changes in gas concentration.
The more stable the sulfuric acid production process is, the better; try to avoid making any changes to the gas concentration
After reducing the load, the inlet temperature of the subsequent bed layer will drop, and adjustments are required. Increasing the gas concentration is also an option, which needs to be considered comprehensively.
Indeed, for conversion systems, ensuring that the temperature of each bed section remains within the specified range is a key aspect of control.
Yes, strict temperature control must be applied during the conversion process.
This post was last edited by twinge on 2018-3-19 at 19:28. From a process perspective, according to the reaction equation, another main ingredient is oxygen, which comes from air; one atom of oxygen is combined with four atoms of nitrogen, and in reality, nitrogen constitutes the majority of the gas in the furnace. A slight change in the gas concentration alters the proportion of components in the furnace gas; however, the ratio of oxygen to nitrogen in the raw materials remains fixed at 1:4. A significant change in the volume of gas is required to meet the requirements. The relationship between gas volume and heat generation is not the same as the relationship between gas concentration and heat generation. It is convenient when there is precise automatic control. When there is empirical or theoretical data, operational procedures can be explored. Otherwise, it is a major mistake in operation.