Over-temperature treatment method for converter

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The converter overheats; apart from the peroxide and methanation reactions, it is the exothermic reaction of conversion that is to blame. Peroxide undoubtedly leads to gas cutoff; the methanation reaction increases the water-to-gas ratio and reduces pressure, necessitating gas cutoff when necessary. If it’s merely a case of heat release due to conversion, it’s simple: increase the venting to lower the system pressure, or open the inlet valve to increase the amount of gas supplied. The key is to maintain a constant flow of gas in and out of the conversion furnace; if more gas enters than exits, the temperature will rise, while if less gas enters than exits, the temperature will drop. Stable furnace pressure indicates a balance between inflow and outflow. When the water-coal slurry gasification is in equilibrium, there will be no overheating whatsoever in the absence of peroxides. If dry coal powder is used along with a newly installed catalyst or an excessive amount of catalyst, and there are no cooling measures in place, then overheating will definitely occur. . . . Simply put, I hope this will be helpful to you. I don’t know how high the temperature in your furnace can reach; here, the temperature always exceeds the limit instantly whenever we start the machine. In fact, the possibility of the furnace temperature rising or the oxygen content exceeding the limit is very low. The main reasons are as follows: 1, the water vapor ratio is low; when feeding material into the gasification process, the water vapor ratio naturally becomes low. 2. The airspeed is too low. Actually, when introducing gas, the cold line valve can be opened fully while the auxiliary line valve should be closed completely. During our first attempt at gas introduction, the auxiliary line valve wasn’t closed fully, which caused the furnace temperature to rise too high. The main inlet valve shouldn’t be opened too wide; instead, use the vent pressure for control – set the pressure slightly lower than the system pressure, which will result in a higher flow rate, after which the pressure can be increased gradually. In fact, as long as the furnace temperature of the conversion furnace is maintained, nitrogen can be introduced before starting up the furnace; during gas introduction, this nitrogen will help to lower the furnace temperature