Pressure differential issues in the reactors of diesel and gasoline hydrogenation units
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This post was last edited by 丶 Sniper on 2016-3-2 at 14:31. Dear experts and professionals, the pressure difference in my diesel and gasoline hydrogenation reactor is continuously increasing. The reaction temperature is 305°C, with no records of overheating. The processing capacity is 20 m3, the pressure is 6 MPa, and the flow rate of recycled hydrogen is around 26,000 Nm3/h. Currently, the pressure at the upper section is 0.23, while it’s 0.33 throughout the entire reactor. After changing the feed material, two sets of filters with a filtration accuracy of less than 25 microns were installed. Last year, regeneration was carried out outside the separator unit; now, it’s not possible to increase the reactor’s processing capacity. Are there any measures that can reduce the reaction pressure difference without shutting down the plant? Thank you! ! Waiting online! !
I can’t understand it, but the pressure you’re dealing with is quite high – 60 MPa! !
This post was last edited by leisure929 on 2016-3-2 at 11:22. Are the raw materials catalytic gasoline and catalytic diesel? 1. Has the catalytic gasoline been stored in the tank area for too long? 2. Check whether the filter screens of each circuit are damaged or short-circuited. 3. What causes the inability to increase the flow rate? Why does the pressure difference increase as soon as the flow rate is tried to be increased? How high? 4. Get ready to turn your head
Single-reactor operation without shutdown? I’ve never heard of it; it’s better to get ready for a shutdown!
I typed it wrongly in haste; it’s 6 MPa
First, determine the pressure difference in the front section to see if carbon buildup there is causing an increase in pressure difference； (For the part related to the differential pressure gauge) Consider again whether the high gel content of the raw material is causing secondary coking ； Finally, be prepared for the worst: determine whether the catalyst has been crushed. There’s probably no way to handle it without stopping work, right?
Come here to study*! However, there are many factors that affect the pressure difference! Analyze each specific issue individually!
Does 0.23 in the upper section refer to the first bed layer? Is the unit MPa? If that’s the case, the pressure difference in the first layer is obviously very high, and it’s necessary to tilt the head. But it feels like only a year has passed since last year – that’s really fast. Have you noticed any changes in the frequency at which the filters are backwashed?