Adjust the converter bed temperature
Thread Content
When a significant temperature rise is detected in the catalyst bed of the first shift reactor, it is necessary to take action promptly by reducing the inlet temperature of the first shift reactor, adjusting the amount of feed gas, and appropriately reducing the load. Depending on the actual temperature of the catalyst bed, saturated steam can be switched to superheated steam. (This is stated in our procedures; please give us some advice.) Why is it necessary to switch from saturated steam to superheated steam at this time? When is saturated steam and superheated steam used respectively?
By reducing the inlet temperature of the converter, saturated steam condenses more easily; this condensed water then enters the converter and can cause damage to the catalyst. Using superheated steam is much better, as it can effectively prevent or minimize such issues. Saturated steam can be used without reducing the inlet temperature of the converter, or with only a slight reduction; otherwise, superheated steam should be used.
Prevent steam from condensing inside the furnace, which would otherwise cause the loss of potassium salts in the catalyst and reduce its activity at low temperatures or even render it inactive.
Saturated steam tends to condense, which can damage the catalyst; due to the presence of pores in the catalyst, capillary condensation occurs
Superheated steam has a high temperature; according to you, it should be used for cooling – please give some advice
The main consideration is likely the impact of saturated steam condensing into liquid water on catalyst activity.
First, instead of reducing the amount of water entering the furnace, it is possible to increase the water vapor ratio in order to enhance the activity of the shift converter