”As the central oxygen supply increases indefinitely, the burner pressure difference will decrease indefinitely“

How important do you think the relationship between the two is?

Hehe, even when the burners are operated at full capacity, the pressure difference doesn’t change much. It should not be overlooked that the slurry pump is a piston pump; it overcomes the resistance encountered when the slurry is ejected from the burners in order to push the slurry into the gasification furnace. In simple terms, a burner functions like a flow-limiting orifice plate; the pressure difference across it is determined solely by the size of the orifice and the flow rate through it. The size of the central oxygen has little impact on the burner pressure difference; at most, it increases the speed at which the slurry enters the gasifier. It's just my personal opinion; I hope everyone feels free to share their views

I believe that the oxygen flow rate has an impact on the burner pressure difference to a certain extent, because: whether it is the central oxygen nozzle or the external oxygen nozzles, the higher the flow rate, the more pronounced the Bernoulli effect becomes, which in turn affects the burner pressure difference. In the later stages of burner operation, as the outer epoxy nozzle contracts, the flow rate increases, causing fluctuations or a decrease in the burner pressure difference. My own understanding may not be accurate.

In the absence of external influences, the middle nozzle can be simply regarded as a flow-limiting orifice plate; however, the situation changes when external epoxy and central oxygen are involved.

Because during normal operation, the adjustment of the oxygen supply at the center is done in a fine manner, and the same holds true for epoxy. When there is no significant change in the gap around the burner, the flow rate does not change significantly either. However, when the flow rate changes by 0.5 meters per second or more, the impact becomes noticeable.

You are still considering the resistance factors posed by the outer epoxy and the central oxygen to the coal slurry entering the furnace. It’s true that there is resistance, but the coal slurry pump overcomes this resistance by doing work; otherwise, how could the coal slurry enter the gasification furnace smoothly? As for the central oxygen and the outer epoxy, their main function is to atomize the coal slurry; the shear force generated by these elements helps to break up the coal slurry more effectively, which is beneficial for the gasification reaction. Meanwhile, the appropriate atomization angle must match the inner diameter of the gasification furnace.

Let’s discuss the topic raised casually; it’s just a direction for thought, as it will never happen in reality.

On the contrary, the outer epoxy and central oxygen do not increase the resistance to the flow of coal slurry into the furnace; rather, they reduce that resistance. :)

Personal opinion: 1. The pressure difference between the oxygen pipeline, located behind the control valve, and the combustion chamber is relatively small. Yet it is this small pressure difference that maintains the shape and stability of the flame in the gasification combustion process. If this pressure difference is reduced by too much, the internal balance is disrupted due to changes in the flow pattern, even when the height of the gasification furnace remains unchanged. 2. The outlet of the oxygen channel in the burner has a bending angle to ensure the formation of a swirl effect that facilitates mixing; if the channel is too wide, the swirl intensity decreases, which hinders the mixing of oxygen and coal. 3. During the production process, fine adjustments can be made, but this is done to correct trends; ultimately, it still needs to revert to the design

What is the pressure difference between the oxygen supply and the furnace chamber in your system?