Operational steps for replacing the burner in the Texaco process
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If it is only found that there is a problem with the burner of the Texaco furnace, and it is desired to put it into use immediately after replacing the burner, what are the steps for doing so (a detailed explanation is requested)? How much time is required from cutting off the gasification furnace to reconnecting it for gas production?
1. Shut down the furnace, relieve pressure, purge, and remove the process burner； 2. Replace the heating burner and raise the temperature at a rate of 50 degrees per hour ； 3. At a furnace temperature of 1000 degrees, replace the burner with a new one; ensure proper nitrogen purging, and then feed the material in. It takes about 10 hours; if the heating/cooling rates and pressure reduction rate are followed strictly, it will definitely not be possible to complete the task within 10 hours.
Heat up for 30 MIN, shut down the furnace, release pressure, remove the process burner, and replace it directly with a new one. After nitrogen purging is complete, feed the material in. About 2 to 4 hours in total.
When the furnace temperature is 1000 degrees, a new type of burner needs to be installed. How should this replacement be carried out in such a situation? Please be more detailed, thank you!
Every time our gasification furnace is shut down, we have to clean the high-pressure coal slurry pump; therefore, the process of shutting down the furnace, releasing pressure, replacing gases, and swapping out burners usually takes 4 hours. For a gasifier that has just been stopped, there is no need to raise its temperature within 8 hours, as the furnace temperature was already increased before shutting it down to melt the slag. Simply replacing a burner will not result in a significant drop in temperature; moreover, as long as the wall temperature and the temperature of the bricks do not drop too much, even if the furnace temperature is at 900°C or 800°C, it will not cause blockage at the slag outlet. This situation is fundamentally different from adding materials after heating.