Gasifier continuous operation
Thread Content
The gasification caused the interlocking trip due to the instability of oxygen. After the air separation was adjusted, it was normal, and then the gasification was continued for continuous casting. Is it okay to carry out continuous casting under pressure during continuous casting? Are there any regulations on how much gasifier pressure should be controlled when a single-nozzle furnace is continuously operated?
Continuous feeding requires all the pressure to be released. Feeding under pressure is too dangerous. At present, it seems that there is no such thing as feeding under pressure for a single nozzle, and there is no need to take that risk. Also, some companies include the pressure after the scrubber into the startup process, which cannot be higher than 0.4 MPa.
If a single nozzle is stopped, what is the significance of continuous operation under pressure? Continuous betting is risky. Feeding after the pressure is applied and released only takes a little more time. If one pair of four-nozzle burners is tripped, the other pair of burners is still running normally. If it is a non-burner failure and continuous operation, it can ensure that the rear system does not stop and only reduces production. This kind of economic benefit is great.
This mainly depends on the analysis of economic effects
I would like to ask, after the pressure is released, do I need to replace it with nitrogen?
Continuous operation under pressure means that there is syngas in the gasifier. According to the time when oxygen and coal slurry enter the furnace, oxygen will go in first. Will there be any problems?
The one upstairs has been replaced with nitrogen, and your oxygen enters the furnace first, which is also a serious safety issue. Did you know it will explode?
For continuous casting under pressure, nitrogen replacement is required.
Is continuous casting under pressure necessary? ? ? ?
The coal slurry should be put into the furnace first. We (single nozzle) have never fired continuously under pressure for fear of explosion.
1. The risk of continuous betting under pressure is too high. If you fail, it will explode. There is no need to take risks. 2. Continuous feeding means that the burner is not pulled out, and other feeding is the same as normal feeding, replacement, large chain, etc.