Problems with igniting the sulfur production furnace
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When lighting and heating a sulfur production furnace, should it be ignited under positive pressure or negative pressure inside the furnace?
Before lighting the sulfur production furnace, it is necessary to ensure that the incinerator has been ignited and is burning properly, after which the sulfur production furnace can be lit. Before ignition, the Claus system should be connected to the furnace process; theoretically, there should be a negative pressure. However, if the system is large, the furnace chamber may still have positive pressure – as long as there is a pressure difference between the fuel gas pressure and the furnace chamber pressure.
The ignition furnace of the sulfur production furnace should be at a slight positive pressure
It is usually at a slight positive pressure, and new devices in recent years generally come equipped with an electric ignition system, so there are no major issues. Old furnaces in the past might have required a light stick to start the fire, and in such cases it was necessary to be very careful to avoid burns caused by backfire; one had to turn to the side when inserting the light stick. The risk is relatively high; in such a case, it is recommended to replace it with a electronic igniter.
For newly installed units, since their operating time is not very long and the system operates smoothly, once the process is established, the flue gas butterfly valve is used to keep the incinerator at a slight negative pressure. It was mentioned above that this is to prevent backfire from causing harm, but such a phenomenon hardly occurs these days. Active participation
If it is a stove that uses electricity to ignite, this shouldn’t be a problem.