Removal of slag from the furnace tubes of heating furnaces
Thread Content
This post was last edited by shiwang528 on 2011-1-26 21:36. How is the slag in the heating furnace removed at the beginning of operation? How to determine whether the slag has been completely removed?
Blow out using steam blasting, and finally conduct a target testing.
Could you explain in detail the procedure for the “target shooting test”? Thank you
Reply to 3# shiwang528: It involves removing the flange at the outlet of the furnace tube, placing a steel plate in the middle, and then putting clean paper on top of the steel plate. This is done to check whether there are any impurities in what comes out during purging, and whether the purging was done thoroughly. This process is commonly known as “target testing”
Thank you. There are no scores available today to rate things, so I’ve gone out of my way to restore them as a sign of gratitude. Have a great weekend!
Reply to 5# shiwang528: Let’s add the points again tomorrow. How can I level up quickly? I’ve seen many people who haven’t been registered for long, but who reach a high level quite quickly. What gives the most points?
Participate more, communicate more, and help everyone solve problems! Hehe—no pain, no gain; why worry about leveling up? After all, wealth is merely virtual.
We used compressed air for repeated blasting and purging until the airflow after blasting was no longer cloudy.
Let’s talk about understanding this: 1. The methods used in construction projects have improved significantly nowadays; argon welding combined with electric welding is generally employed, and as a result, there isn’t a large amount of slag inside the pipelines； 2. Blasting purging has its limitations, including whether the speed limit is sufficient (insufficient air flow results in inadequate purging capacity, so only some dust can be blown out). The speed limit within the same blasting package decreases from the blasting outlet to the end of the blast zone, which creates blind spots in the blasting process. 3. Recommendations for purging the furnace tubes: purge first, then rinse ； Blow until no dust is visible; the amount of blowing air needs to be evaluated to ensure the line speed, and the volume of air flow can be felt at the outlet ； When flushing, it is also necessary to ensure an appropriate water flow rate. For multiple furnace tubes, it is important to flush each one individually; in the case of combined operation, attention should be paid to pipeline filtration to prevent contamination of subsequent systems. For stainless steel pipelines, care must be taken regarding the quality of the water.