Regarding the issue of smoke-free coal charging with high-pressure ammonia water
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When using high-pressure ammonia to carry out smoke-free coal charging, the pressure in the gas collection tank rises sharply from around 100 pascals before the high pressure is applied to over 300 pascals. Although no smoke comes out of the coal charging holes, smoke appears in various parts of the furnace. Once the high pressure is turned off, it takes 3–5 minutes for everything to return to normal. I would appreciate some advice from those with experience in this area. Thank you!
It is recommended to install an automatic control system for the stack pressure; Shenyang Anxin can handle this task, and there is another company in Xi’an whose name I can’t recall； It works well! The principle is simple: the adjustable flap on the suction elbow, in combination with a large-scale circulation system (variable frequency control of the fan), is used to stabilize the pressure in the gas collection pipe; of course, some pre-regulation measures can also be employed.
It is also possible to install a small circulation automatic adjustment flap alongside the automatic large flip flap of the main intake pipe. Our company has designed this solution, but it has not been put into use yet; I’m not sure what the results will be. I’ll post an update once it is in use