Questions about UOP reforming regeneration technology
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Hello everyone, I have a few questions regarding recycling processes. (1) What is the function of the lock hopper? (2) Is the principle of separation in the raw and regenerated material hoppers sedimentation separation? (3) Why does the flue gas coming out of the regenerative air cooler return to the regenerator? Thank you!
This post was last edited by libingtaoff8 on 2017-4-27 at 14:12. 1. It provides a place for pressurizing the regenerated catalyst and controls the amount of catalyst that circulates. 2. It relies on gravity sedimentation to separate the catalyst from the gas; there are vertical pipes inside. 3. The flue gases from regeneration are reused to supply air for burning, thereby controlling the temperature of the regenerator and saving energy!
Function of the closed hopper: 1. To control the circulation rate of the catalyst, that is, to regulate the coking of the catalyst in the entire regeneration system by controlling loading and unloading through the closed hopper. 2. Move the catalyst from the low-pressure area to the high-pressure area, ensuring that the pressure in the upper part of the hopper is equal to that in the liquid separation tank, at around 0.25 Mpa ； The pressure at the bottom regeneration lift L valve assembly is approximately 0.5 Mpa; the catalyst is dropped into the lift pipe by closing the hopper. These 2 are the main functions
Thank you; I’ll ask you again if I have any questions.
Function of the separation hopper: 1. It contains a nitrogen bubble that serves to separate the oil and gas in the reactor from the oxygen in the regenerator. 2. Use purge gas to blow out the dust in the catalyst. 3. The UOP process also incorporates a Chlorsorb process catalyst at the lower part of the separation hopper to absorb chlorine from the regenerated flue gas. The separation of the untreated catalyst from the oil and gas relies mainly on the backflow gas at the bottom of the reactor, rather than sedimentation separation
The regenerated flue gas passes through the regeneration air cooler and the regeneration electric heater, with the temperature being controlled to 472°C, before entering the regenerator for coking； The oxygen content analyzer on the pipeline equipment controls the amount of make-up air for bottom purification. The circulation of the regenerated flue gas is primarily aimed at cooling, controlling oxygen levels, and achieving better coking; chlorination and dehydration do not take place during this process ； Domestically produced reforming processes include chlorination removal and dehydration, which yield better results.