Two questions about lockfights
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This post was last edited by qihuajingling on 2010-3-28 at 10:35. 1: What kind of water is used for pressurizing in lockfighting machines? Please share information on the different manufacturing processes and current operating conditions of various companies. (Deaeration water pumps, quenching water pumps, etc.) 2: The medium used for backwashing to block slag between the first and second slag locking valves, as well as its source. (Dehumidification pumps, high-pressure nitrogen, etc.) Please introduce the methods used by your company and share the results of their effectiveness
Lock-hammer stamping can use high-pressure gray water, quenching water, and sealing water. The cleaning medium can be high-pressure gray water or high-pressure nitrogen.
Question 1: Use the deaeration water pump under normal operating conditions, and use the quench water pump after shutdown. Question 2: The auxiliary quench water pump, that is, the high-pressure ash water pump
1: Is it still necessary to stamp the lock box after parking? 2: Which pump does the auxiliary cooling water pump refer to? Isn’t the high-pressure ash water pump just a deaeration water pump?
Everyone, please explain why cold water pumps cannot be used under normal circumstances
Where does the quenching water go? Quenching ring. A stable and sufficient data flow is required. If it is used for pressurization, fluctuations are inevitable; in severe cases, it can even affect the safety of the quench ring and downcomer. You have to take the risks if you want to gain something. I can’t think of any other reasons.
Of course, the hopper needs to be pressed after parking, as the vaporizer is still under pressure at that time. Only the stamping lock hopper can continue to operate. Only when the pressure in the gasifier drops to atmospheric pressure does it suffice to close the valve in front of the lockhopper ram valve. An auxiliary quench water pump should be available only in furnaces with four nozzles, right? It doesn’t seem like there was direct punching in the locking process. This pipeline is connected to the outlet of the black water circulation pump. This pump has basically never been used. It seems that this pump is no longer being designed these days.
Auxiliary cooling water pump: included in the design of some projects and not in others; it is essentially a high-pressure ash water pump. Generally, deaeration pumps are used to pressurize the lock hopper; I’ve seen many PID controllers, and they are all configured with piping in this way.
Pressurizing the lock hopper with a quench water pump has two effects: one is that it affects the water flow rate to the quench ring (usually, the quench water flow decreases by 5 m3/h instantly), and the other is that it leads to excessively high temperatures, which is not favorable for depressuring the lock hopper. For the backwash water, we use high-pressure graywater, and its performance is quite good.
There is no need to perform a stamping operation after parking; it’s sufficient to keep the lock hopper in the slag collection state for 30 minutes.
There is still slag inside the quench chamber after parking. Just use a few more loops to get it rid of. A normal lock hopper is one that collects slag for 30 minutes. To extend the time, just release the valve interlock.