How to increase the load on the converter?
Thread Content
When increasing the load on the converter, steam is added first, followed by the feed gas; then, does the furnace temperature drop, or does it rise? Should we increase the furnace temperature first, then add steam, and finally add the feed gas? After each additional load, does it take half an hour for the temperature change in the converter to become apparent? Is there a ratio between the fuel gas, steam, and feed gas before adding them? For example, when loading at a 1:1:1 ratio, should we mainly focus on the temperature in the upper furnace chamber? Should we look at the outlet temperature of the furnace instead? Should the load be increased based on the temperature in the converter?
The general sequence for increasing the load of a conversion furnace is to first increase the steam volume, then gradually increase the raw gas volume, while paying attention to adjusting the furnace temperature. Whether to lower the furnace temperature should be determined based on the actual situation; if the furnace temperature is too low, it can be increased appropriately. After each additional load is applied, the temperature change in the converter may not be apparent immediately; it may take about half an hour for it to stabilize. Whether there is a fixed ratio between the addition of fuel gas, steam, and feed gas depends on the specific process requirements and the design of the furnace. There is no fixed ratio; it needs to be adjusted according to the actual production conditions. When loading the furnace, attention is usually paid to both the temperature inside the furnace and its outlet temperature, but the outlet temperature is more critical as it directly reflects the conversion efficiency and the completion of the reaction. Adjusting the load based on the outlet temperature is a common practice. .
The principle is to add fuel gas first, then water vapor, and finally natural gas. In practice, one needs to observe how the furnace is operating and what the water-to-carbon ratio is. If the water-to-carbon ratio is already high but the furnace temperature is appropriate, it’s possible to add a little natural gas first, observe for a while, and then make adjustments as needed