Hydrogen production, waste heat, superheated steam, over-temperature
Thread Content
In hydrogen production conversion furnaces, the superheated steam in the waste heat recovery superheating section is always at too high a temperature – how can this be resolved? ! !
Isn’t there a three-way valve to control the amount of saturated steam entering the convection section of the converter?
The steam coming out of the drum is heated in the convection section of the converter; before entering this convection section, there is a branch that does not go into the convection section, acting as a bypass. Increase the opening of the steam valve that does not lead to the convection section; this way, less steam from the drum enters the convection section for heating, and the temperature of the steam that is mixed with the steam that has not undergone heating in the convection section will decrease.
After the superheated steam is produced, there should be a temperature reduction regulator that injects deoxygenated water into the steam to lower its temperature. I think the view expressed upstairs is incorrect. The temperature in the superheating section is already high; reducing the amount of steam entering this section is not beneficial for protecting the pipelines. On the contrary, if more steam enters the superheating section, it will lower the temperature of the superheated steam.
A quench water valve is generally installed in the superheated steam section to regulate the steam temperature.
Add a pressure relief valve so that superheated steam can be cooled using boiler feed water
The steam coming out of the drum is heated in the convection section of the converter; before entering this convection section, there is a branch that does not go into the convection section, acting as a bypass. Increase the opening of the steam valve that does not lead to the convection section; this way, less steam from the drum enters the convection section for heating, and the temperature of the steam that is mixed with the steam that has not undergone heating in the convection section will decrease.
I agree with what was said on the fourth floor; our design also uses spray deoxygenated water for cooling.