Iron-molybdenum hydrogenation
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Our company uses iron-molybdenum hydrogenation to convert organic sulfur for precise desulfurization. I would like to ask everyone what an appropriate space velocity for this catalyst should be? According to the T202 manual, 700h-1 yields the best results. The JT-8 manual specifies 500＿1500h-1. We are using T202, and the space velocity in actual production is 1150–1200 h-1. Is it too large? This post was last edited by mountain16 on 2008-9-8 23:59 ]
The values given in the catalyst instructions are only recommendations; it is not necessary to follow them strictly during actual operation. As long as the product meets the required standards, a higher space velocity has little impact. However, care must be taken to ensure that the reaction temperature is not too high, as this could affect the long-term operation of the equipment.
Your plant uses the T202 catalyst from Beijing Sanju, right? This catalyst is used under conditions of a space velocity of 700 h-1 (on a volumetric basis), a reaction temperature of 380–450°C, and a pressure of 1.8–2.1 MPa (gauge pressure). It is applied to coke oven gas containing 200–300 mg/m3 of organic sulfur and about 8% carbon monoxide, and it achieves a hydrogenation conversion rate for the organic sulfur of over 96%. Have your other parameters also met this requirement? The ones behind our factory have all reached that level, but the space velocity is 850 h-1. Note that a low air velocity is very beneficial for the catalyst’s lifespan. This post was last edited by kaisl1314 on 2007-12-13 09:43]
For reference, hehe, our facility hasn’t started operations yet.
I would like to ask: our plant’s primary hydrogenation pre-converter also uses T202 catalyst. What is an appropriate temperature control for the catalyst bed?
Check the conversion rate of organic sulfur content in the output, as well as the total sulfur content in the output; try to use it at low temperatures