Detection method of phosphorus in acetylene gas
Thread Content
We used sodium hypochlorite to remove phosphorus and tested it with silver nitrate test paper. However, as we drove the vehicle, the dust in the pipeline became more and more obvious. We tested it with test paper at the outlet and could not tell the difference at all. The outlet was too large and all was black and gray. We then tested it with water and the result was the same. It was analyzed that the acetylene gas was too dirty. The problem all along? ? ? Is there any good way? Install equipment to improve the cleanliness of acetylene gas, or other methods to detect phosphorus-containing gases. Thank you so much. Please help me analyze it.
As the driving time progressed, the dust in the pipeline became more and more obvious. I used test paper to test it at the outlet. It could not be distinguished at all. The outlet was opened too much and it was all black and gray. I then tested it with water. The result was the same. It was analyzed that the acetylene gas was too dirty. --------Isn’t this too dirty? I feel incomprehensible
Really, how did you test it? ? ?
That means the on-site management is terrible. They all take samples at the sampling port, and they test with the same test paper as you do.
No, what’s the problem? Friends, can you take photos of the pipes, materials, inner villages, etc.? Please let me know. Thank you very much. We have only been driving for less than 3 years. How do we do it?
Do you have WeChat to facilitate communication?
Moderator, you just answered like this and left. How can you make me feel so embarrassed?
The dry or wet method has little effect on the purity of the acetylene gas main pipe and the detection of sulfur and phosphorus. The black and gray you mentioned should be caused by corrosion of the pipeline. Acidic corrosion is generally reddish, and alkaline corrosion only appears black. It is mainly caused by the high moisture content entrained in the acetylene gas. Isn't the sampling port in the picture you sent that time located in the middle of the pipe? Logically speaking, this should not happen. If you have the opportunity to stop and replace it, take it apart to see if it is caused by corrosion or some other reason. Furthermore, it should be better to drain the acetylene gas for a while before taking the sample.
Moderator, is it possible that the gas dust is too large? Our pipes are very muddy, especially the Nasim outlet main pipe. It was overhauled before, and it took more than a day or two. As for corrosion, I have some questions? I would also like to ask if there is a lot of mud in your pipes? Acetylene gas is also made from calcium carbide. How did you remove the dust so thoroughly? I sincerely ask for advice. Thank you very much. Every time the cooling water washing tower and spray pipes are inspected and inspected, there is a lot of mud and scale!
You are using the dry method, so the dust must be much larger than the wet method. The reason for calcium carbide mud is that the mud washer and water washing tower (cooling tower) have poor washing effect, causing the acetylene gas to carry calcium carbide mud into the Nasim unit. If it runs for a long time, a small amount of calcium carbide mud will be entrained at the outlet. In this way, you should check whether the spray pipes and fillers of the water washing tower or cooling tower in front of the compressor are blocked. The water washing tower we use is a combined type, with a bubble cap on top and packing below. The bubble cap circulates itself and overflows into the packing layer. The packing layer also circulates itself and then the circulating liquid enters the generator.