Air supply volume is too low

Of course it will decrease. The temperature of the catalyst bed is maintained by the heat released from the reaction between hydrogen sulfide and sulfur dioxide; when the amount of air supplied is reduced, the amount of reaction that occurs also decreases, so the temperature naturally drops.

Personally, I don’t think so; a lower air supply volume allows for a corresponding reduction in the flow rate of fuel gas, ensuring that there is sufficient furnace temperature and oxygen in the air to react with H2S, thereby maintaining the temperature of the converter bed.

Hello upstairs; is the fuel gas kept flowing during normal production?

The bed temperature will definitely drop.

Regardless of whether the air supply volume is too high or too low, the temperature will definitely drop.

It reduces the effects caused by hydrogen sulfide, as the reaction between it and sulfur dioxide is exothermic. The value is generally kept between 1.8 and 2.4; otherwise carbon deposition in the bed layer will occur

Whether the air supply volume is too high or too low, the temperature will decrease, as can be seen from chemical equilibrium. I believe you are referring to Claus sulfur removal.

What the original poster meant by a low air supply ratio is to include an exhaust gas treatment section, in order to prevent excessive amounts of sulfur dioxide and sulfur vapor from being present in the process gases. This depends mainly on two factors: 1. The temperature of the reactants; if this temperature can be maintained at an appropriate level, we try to reduce the air supply ratio. 2. If there is an exhaust gas treatment section, it’s necessary to increase the amount of hydrogen supplied accordingly. To prevent system clogging, which is mainly caused by blockages in the quench tower packing and the quench water filter

1. If the air supply volume is too low, the furnace temperature may not be achieved, affecting ammonia combustion. At the same time, if the air supply volume is too low, the hydrocarbons cannot burn fully. It causes system blockages, equipment corrosion, and affects product quality. 2. If the air supply volume is too low, the temperature rise in the converter is minimal; as a result, the high-temperature mixing valve opens more widely, causing the sulfur partial pressure to increase and affecting the yield. 3. If the air supply volume is too low, the temperature rise in the hydrogenation reactor will be minimal, failing to meet the process requirements. 4. If the air supply volume is too low and there is no exhaust gas treatment system, it will cause the temperature of the exhaust gas incinerator to rise.

If the air supply is too low, it will first cause the temperature of the reactor to drop, and secondly it will reduce the temperature of the reaction vessel as well.

Insufficient air supply will lead to a decrease in the temperature of the reactor, which in turn results in lower temperatures in the cLaus reactor and the hydrogenation reactor. However, the incinerator will experience overheating, and sulfur dioxide emissions will exceed the allowed levels

A low air supply volume does not necessarily lower the reaction temperature; it may even increase it. Consider the following reaction equations: H2S + 1.5O2 = SO2 + H2O – Q (1) 2H2S + SO2 = (3/X)Sx + 2H2O – Q (2) CS2 + H2O = COS + H2S + Q (3) COS + H2O = H2S + CO2 + Q (4) Where equations (1) and (2) represent reactions that occur in the combustion furnace, while equations (2), (3), and (4) represent reactions that occur in the reactor. As can be seen from the above, reactions 1 and 2 are endothermic reactions. If the air supply is insufficient, reaction 1 will decrease, which in turn reduces the amount of SO2 produced. As a result, reaction 2 that takes place in the subsequent reactor will also decrease, leading to a reduction in the heat absorbed. Meanwhile, the hydrolysis reactions that occur in the reactor are not affected, meaning that the total amount of heat increases. This is the theoretical result; in actual production, corresponding calculations must be made based on the different components present in the raw materials.