304 Metal Intalox saddle Ring IMTP is a kind of metal random packing. What is the corrosion resistance effect of this packing? Why do chemical fertilizer plants choose 304 intalox saddle ring? Let's take a look at a case of Shijiazhuang Fertilizer Plant with Jiangxi Kelley Chemical Packing Co.,Ltd.
The purification section of Shijiazhuang Fertilizer Plant is a pressurized three-catalyst process, and its saturated hotting tower has always been filled with porcelain rings. It takes a lot of manpower and material resources to replace the porcelain ring each time; and the porcelain ring is easy to be crushed in the later period of use, which increases the resistance of the tower and sharply reduces the circulation of hot water, which affects the recovery of heat energy. In severe cases, the broken porcelain ring can be along the inlet of the hot water pump The pipe enters the pump body and damages the impeller, and even blocks the pipe and the water heater tube.
Subsequently, Shijiazhuang Chemical Fertilizer Plant used stainless steel 304 Intalox Saddle Ring for corrosion resistance test. Since the saturated hot tower cylinder is lined with composite steel plate, the severely corroded part of the whole tower is the defoaming layer on the upper part of the saturated tower, so the experimental point is taken here. Place. The fertilizer plant weighs the 304 square saddle ring and puts it into the saturation tower, and rotates it on the top and bottom of the demister shed and under the hot water nozzle; after the test time is up, the sample taken out of the tower will be inspected in detail. They were also weighed. Through experiments, the corrosion situation was not serious. There was a thin layer of dirt (mainly sludge, catalyst powder, etc.) on the surface of these samples. The dirt was loose and easily scraped off with a knife. After scraping off the dirt, the rectangular saddle ring packing is covered by a dark brown film. The film is firmly bonded to the metal surface. It is not easy to scrape off with a knife. It is insoluble in 40% nitric acid (soaked for 18.5 hours) and slightly soluble in 15% hydrochloric acid. (Soak for 2.5 hours), weigh the sample after scraping off the dirt again, the weight loss rate is about 2.26% of the original weight.
Because the 304 rectangular saddle ring packing forms a complete protective film during use, according to the operation and production conditions of the saturation tower and hot water tower, the fertilizer plant believes that it can fully meet the production needs, and it is estimated that it can be used for at least 10 years.
Through this case, it is shown that 304 square saddle ring packing is used in the saturation tower, which has good corrosion resistance, high mass transfer efficiency, and good heat transfer and separation effects, which can reduce the consumption of the factory.
Post time: Mar-21-2022