Design of injector for oxidation regeneration tank
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Wet method, two-stage desulfurization, one-stage semi-desulfurization, two-stage variable desulfurization, the design and purchase of the injectors in the two sections are similar. Variable degassing volume 45000m3/h, imported sulfur 150mg/m3, outlet requirement 5mg/m3, operating pressure 8kg/cm2, temperature 35 degrees, H2S removal calculated: 45000 * (0.15-0.005)/1000=6.525kg/h (solution circulation volume is obtained based on sulfur capacity) Normal production circulation volume: LT=350m3/h In the calculation of the number of nozzles in "Synthetic Ammonia" (Editor-in-Chief Shen Jun P491), the liquid volume of the injector is taken directly, for example: n=LT/Li=350/40=8.75 Take 16 groups (the regeneration liquid volume of each nozzle is 35m3/h ； Solution circulation volume 350m3/h) As for why the ejector of 40m3/h was chosen and what the corresponding air volume should be, no correct answer was given. (Experiential verification: Based on how much O2 is consumed per 1kg of H2S oxidized, we can get how much air is needed, and then amplify it to get the required air volume, and finally determine what kind of injector to choose. Although this method is not very accurate, it seems to be sufficient for equipment selection. ) 1. Taking Wuxi Changqing as an example, liquid volume is 35m3/h - air volume is 190m3/h and 50m3/h - air volume is 300m3/h. Based on the above process parameters, how to choose? 2. What is the relationship between the ejector liquid volume and the air volume? I heard there is an experience number: Air volume/liquid volume=6 I don’t know if this exists? What is the basis? The question may be confusing, but in the process of theoretical design and actual selection, there is often mutual reasoning. After all, there are many good examples and successful experiences. Friends, please help me refer to it. Please correct me if I am wrong. Thank you!
According to the desulfurization capacity calculated on the first floor of 6.525kg/h and the desulfurization liquid 350m3/h, the sulfur capacity value is calculated to be 6.525/350 = 0.019kg/m3. According to my concept, the sulfur capacity value should be between 0.2 and 0.25kg/m3. The difference between the two is an order of magnitude. Why is this? I hope to get expert guidance, thank you!
Are there any requirements for the length of the tail pipe?
May I ask the intensity of the blowing? 60m3/m2.h What does it mean? From the paper understanding, isn’t the unit air volume divided by the blowing intensity the cross-sectional area of the regeneration tank?
Only 0.1 can be used when calculating sulfur content
My personal understanding of blowing intensity is the amount of air per unit area per unit time in the regeneration tank.