new problems encountered
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The temperature of the gasifier support plate has increased by more than 100 degrees, but the syngas outlet temperature has not changed. What's going on? Please advise! !
Did it increase by one point or all? If there is only one point, there may be something wrong with that furnace brick.
What is the maximum price it can rise to? According to what the original poster said, it may be caused by dust accumulation on the support plate. At this time, the syngas outlet temperature should not change much.
Within 3-5 minutes, the temperature reached a maximum of 400 degrees. One point was bad, and the other three points rose together, but the syngas outlet temperature did not change. I really don't understand
Haha, the downcomer and quench ring will basically be scrapped. If the pressure difference at the slag mouth is large and gray wire drawing occurs, it is recommended to stop, the sooner the better.
Where is the support plate of the gasifier? I can’t judge based on the comprehensive reference data.
If there is a problem with the quenching chamber parts, it is most likely that there is a problem with the downcomer. When the burn-through area of the downcomer is small, the syngas outlet temperature does not reflect significantly. If the pressure difference at the slag outlet fluctuates greatly at the same time, the vault is high and has an upward trend, and the slag is poor (with large pieces and glass fibers), the machine should be stopped. It will be dangerous if it is not stopped.
This phenomenon occurred twice in 6 hours. The first time the temperature of the support plate rose slowly, from 245 to 400 degrees in 2 hours. The syngas outlet temperature did not change at first. When the temperature of the support plate reached more than 400 degrees, the syngas outlet temperature began to rise. After quickly adding cold water, the syngas outlet temperature dropped and the support plate temperature returned to normal. The second time, the temperature of the support plate quickly rose to more than 400 degrees in just a few minutes. The temperature of the syngas outlet began to rise, and the cold water temperature returned to normal quickly.
Could it be that the connection flange between the quench ring and the support plate is leaking? The temperature of the support plate changes significantly after measuring hours, but the temperature of the syngas does not change significantly.
Reply 5# zhangyan1204 The downcomer is burned through, so the pressure difference at the slag port should be small!
Reply to 10# Lock buckets are usually caused by blockage of the downpipe and partial burnout. It turns out that there are four balance holes on the downpipe. If the downpipe is severely blocked, the air volume in that area will also be reduced.* * Increase, if the ring cloth water sheet is quenched again, it will cause burn-through. If it is not dealt with in time, the quench chamber of a certain company in the forum will burn through the bubbling time, which should not be taken lightly. You must check the ash and gas composition and other indicators on site. If you don't mention these, the discussion will be useless.