In a dry desulfurization tower using activated carbon as a desulfurizing agent, does the temperature of the gas change after it passes through?
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In a dry desulfurization tower using activated carbon as a desulfurizing agent, does the temperature of the gas change after it passes through, and is a heating element required?
Adsorption should theoretically be exothermic, but the amount of heat released is not significant; it doesn’t matter whether a thermocouple is used or not.
Shouldn’t adsorption be exothermic? There’s no chemical reaction, right?
There is temperature rise, so temperature measurement points should be installed; it is best to place them symmetrically.
It is generally believed that in the dry desulfurization process using activated carbon as a desulfurizing agent, it is the activated carbon that directly adsorbs H2S; however, the actual reaction mechanism involves H2S reacting with trace amounts of oxygen present in the gas to form elemental sulfur, according to the equation O2 + 2H2S = 2S + 2H2O. It is elemental sulfur that is adsorbed by the activated carbon. This reaction has certain requirements regarding temperature and humidity. Temperature: Room temperature to 80°C, optimal temperature: 30–50℃ ； Humidity: Relative humidity at the operating temperature should be 70%-100% (no liquid water allowed). The temperature rise during operation is very small; generally, inlet and outlet heating thermocouples are sufficient.
Yes, there are temperature changes; there is one at each symmetric point in our factory
Check if the levels of hydrogen sulfide and oxygen are high; if they are, there will be a temperature rise. Add a thermocouple; it’s not expensive either.
Check if the levels of hydrogen sulfide and oxygen are high; if they are, there will be a temperature rise. Add a thermocouple; it’s not expensive either.
Since the temperature changes are not significant, a platinum resistor can be used to achieve higher detection accuracy