Simple safety measures for entering the granulation tower?
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In chemical production, it is inevitable to carry out operations in the granulation tower while the system is running (without shutting it down), such as cleaning blockages on the scraper arms or tightening screws on the tracks. Due to the tight schedule and the limited buffering capacity of ordinary urine storage tanks, safety measures involving nets inside the tower are often impractical. However, if no netting is used, the clumps at the top falling down will cause a serious accident. Excuse me, are there any simple safety measures?
It is strictly prohibited to enter the urea granulation tower for any work until the urea deposits on its inner walls have been completely cleaned away, no matter what the reason may be! There have been too many cases across the country where people died as a result of urea accumulating on the walls of granulation towers and falling down. Colleagues, please cherish your lives; never sacrifice them in pursuit of corporate profits. Indeed, to address issues such as clumping of the scraping arm, the only option is to consider a method that avoids using the tower. Remember! Remember!
A way to avoid entering the tower? It’s a bit dubious. Could we get a mobile cart with a roof?
What was said on the second floor is right – there have been too many cases where urea accumulated on the tower walls and fell down, killing people. Colleagues, please cherish your lives! A high-pressure water gun can be used to remove urea deposits from the tower walls.
Back when I first started working, there was severe sticking and scarring on the interior walls of the granulation tower; those walls resembled glaciers. Our team leader made us newcomers throw urea out from large basins. I still have scars on my hands from the burns caused by the urea particles. Thankfully, no pieces broke off at that time. It’s really scary to think about it. Later, pieces did break off and even snapped the 30-cm-diameter wooden sticks used to support the basins, and since then I’ve stopped doing such dangerous tasks. It’s best to wait until the machine is stopped before dealing with such issues – after all, life is precious.:lol
I was also hit by a ping pong ball once; luckily I was wearing a helmet!
Be sure to rinse thoroughly. We use a melt pump to send condensate through nozzles for rinsing, and we also use long bamboo poles with rubber hoses attached to deliver the condensate to rinse the tower walls. How do you do the rinsing?
Haha, if possible, get a robot to do the cleaning!
We went to clean it up today; there was nothing on the top or the sides of the tower, which is why we dared to enter and clean it. The diameter of our granulation tower here is 24 meters
Use the Rongrong pump to pump in condensate for flushing; for areas that are difficult to reach, disconnect the hose at the inlet of the granulator and use a fire hose for flushing
Urea manufacturers should strictly prohibit cleaning the granulation tower while it is in operation. The fact that no safety accidents have occurred in the past due to such cleaning efforts is merely luck; should an accident occur, it will still be the person responsible who suffers the consequences. The water flushing method should be used for treatment.
If something sticks to the tower wall, people must absolutely not enter to work on it. 1. If there is slight sticking to the tower walls, I recommend proceeding in two steps: clean the top of the granulation tower the day before, and then clean the bottom of the granulation tower on the following day. 2. When sticking to the tower wall is severe, one can only stop the machine when there is an opportunity, or clean it up only when special safety measures are in place.