Reduction furnace shutdown steps
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During our debugging, every time the furnace was shut down, there would always be a large amount of yellow substance on the furnace chassis, and there would be residual chlorosilane liquid in the air inlet. Even if the vacuum could not be removed, it would corrode the vacuum pipe valves. Please come up with mature shutdown plans and learn from them * Ha thank you
The thing the poster mentioned is "silicone oil". In fact, it is silicon chloride polymer, and the specific ingredients are complicated. It is caused by temperature differences. As for the steps to shut down the furnace, let’s briefly talk about it.: 1. Stop the mixture ； 2. Open hydrogen and burn in empty space ； 3. Reduce current ； 4. When reaching a certain temperature, turn off the hydrogen and turn on the nitrogen. The tail gas should go to the elution tower. ； 5. After the temperature drops to normal temperature, evacuate and drain the furnace tube water. After the reduction furnace is shut down, the furnace can be dismantled during the day shift.
The furnace shutdown steps you mentioned are basically the same as ours. Have you not encountered this situation? Can you be more specific about cutting off the mixture directly or cutting off the material and then using steam to evaporate the existing materials in the vaporizer for a period of time before cutting off the mixture? What is the hydrogen air burning time and furnace shutdown time?
Where does the original poster work? We slowly reduce the mixture, not cut it off directly. The shutdown has nothing to do with the evaporator. As for the dry burning and furnace shutdown time, this is related to the design process of your factory and cannot be said in general. Besides, I can't leak the secret.
Is an evaporator a carburetor (evaporator)?